Mbsmpro.com, Compressor, SC18CLX.2, 3/4 hp, Danfoss Secop, Freezing, R404A/R507, 104L2197, 1Ph 220‑240V 50Hz, LBP, CSIR, −45°C to +10°C, 17.68 cm³, Made in Germany

Technical Specifications

Specification	Value
Model	SC18CLX.2 (104L2197)
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine (Freezing/Cooling)	Freezing / Deep Freezing
Cooling wattage at -23°C	849 W (EN 12900) / 986 W (ASHRAE LBP)
Cubic feet can this compressor cool	Approximately 6-8 cubic feet
Litres can this compressor cool	Approximately 170-225 liters
Kcal/h	730 kcal/h (at -10°C evaporating)
TON	0.25 – 0.3 TON
Oil Type and quantity	Polyolester (POE), 550 cm³
Horsepower (HP)	3/4 HP (approximately 0.75 HP)
Refrigerant Type	R404A / R507
Power Supply	220-240V, 1 Phase, 50Hz
Cooling Capacity BTU	3671 BTU (at -10°F LBP) www.ebay.com
Motor Type	CSIR (Capacitor Start Induction Run)
Displacement	17.68 cm³
Winding Material	Copper
Pressure Charge	Maximum refrigerant charge: 1300g
Capillary	Not specified (system dependent)
Model Fridge or refrigerator	Commercial freezers, display cabinets, beverage coolers
Temperature function	−45°C to +10°C evaporating temperature
With fan or no	Fan cooling (F2)
Commercial or no	Yes – Commercial refrigeration
Amperage in function	3.13A to 5.26A (depending on evaporating temp)
LRA (Locked Rotor Amps)	23.5A
Type of relay	HST (High Starting Torque) required
Capacitor or no and valeur	Starting capacitor required (CSIR motor)
Country of origin and exporting countries	Germany (Made in Germany) – Exported worldwide

Efficiency Metrics (COP)

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10	0	4	10
Cooling Capacity (Watts)	595	780	849	995	1245	1532	–	–	–
Power Consumption (Watts)	598	680	708	765	854	949	–	–	–
COP (W/W)	1.00	1.15	1.20	1.30	1.46	1.61	–	–	–

Performance data based on EN 12900 Household standard, 220V 50Hz, fan cooling

blg.ee

ASHRAE LBP Performance Data

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10	0	5	10
Cooling Capacity (Watts)	691	905	986	1156	1447	1783	–	–	–
Power Consumption (Watts)	598	680	708	765	854	949	–	–	–
COP (W/W)	1.16	1.33	1.39	1.51	1.69	1.88	–	–	–

Performance data based on ASHRAE LBP standard, 220V 50Hz, fan cooling

blg.ee

Current Consumption by Temperature

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10
Current (Amps)	3.98 A	4.28 A	4.39 A	4.60 A	4.92 A	5.26 A

5 Compressor Replacements (Same R404A/R507 Refrigerant)

Model	Manufacturer	HP	Displacement	Voltage	Notes
SC18CLX.2	Secop/Danfoss	3/4 HP	17.68 cm³	220-240V 50Hz	Original equivalent www.mbsm.pro
SC18/18CL	Secop/Danfoss	3/4 HP	17.68 cm³	220-240V 50Hz	LBP/MBP version www.prokes-auto.com
SC15CLX.2	Secop/Danfoss	1/2 HP	12.9 cm³	220-240V 50Hz	Slightly lower capacity
SC21CLX.2	Secop/Danfoss	1 HP	21.0 cm³	220-240V 50Hz	Higher capacity alternative
HST Series	Various	3/4 HP	Similar	220-240V 50Hz	High starting torque models

5 Compressor Replacements (Other Refrigerants – Conversion Required)

Model	Refrigerant	HP	Manufacturer	Voltage	Notes
SC18/18G	R134a	3/4 HP	Danfoss/Secop	220-240V 50Hz	HBP application www.ebay.com
SC18CNX	R290 (Propane)	3/4 HP	Danfoss	220-240V 50Hz	Natural refrigerant assets.danfoss.com
GS21MLX	R134a	1 HP	Secop	220-240V 50Hz	CSCR motor type www.secop.com
SC18GH	R134a	3/4 HP	Secop	220-240V 50Hz	HBP – High Back Pressure www.skh-kaeltetechnik.de
GM80AF	R134a	1/4+ HP	ZMC	220V 50Hz	Household type (different capacity) www.teksogutan.com

Applications

This compressor is ideal for:

• Commercial freezers and deep freezers
• Beverage cooling systems and drink dispensers
• Display cabinets for frozen foods
• Ice cream cabinets
• Cold storage rooms (small to medium size)
• Medical refrigeration (vaccine freezers, laboratory equipment)
• Transport refrigeration units

Key Features

✓ Robust German engineering – Manufactured in Germany with strict quality control
✓ Versatile refrigerant compatibility – Works with both R404A and R507
✓ Wide temperature range – Operates efficiently from -45°C to +10°C evaporating temperature
✓ High starting torque – HST design ensures reliable starts even under load
✓ Energy efficient – COP up to 1.88 at optimal conditions
✓ Commercial grade – Built for demanding commercial refrigeration applications

Installation Notes

• Oil compatibility: Uses polyolester (POE) oil – ensure system is clean and compatible
• Starting components: Requires appropriate starting capacitor and relay (CSIR motor)
• Refrigerant charge: Maximum 1300g – follow manufacturer specifications
• Electrical: Ensure proper voltage supply (220-240V 50Hz single phase)
• Cooling: Requires adequate ventilation and fan cooling (F2 specification)
• Professional installation: Must be installed by certified refrigeration technicians

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SC18CLX.2 compressor 104L2197 Danfoss Secop R404A R507 LBP 220-240V 50Hz specifications replacement

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SC18CLX.2 Compressor 104L2197 | Danfoss Secop R404A/R507 | Complete Specs & Replacements

Meta Description:
SC18CLX.2 (104L2197) Danfoss/Secop compressor specs: 3/4 HP, R404A/R507, LBP, 220-240V 50Hz, 17.68cm³. Performance data, COP values, replacement guides & technical details. Made in Germany.

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Excerpt (First 55 Words)

The SC18CLX.2 (104L2197) is a professional-grade hermetic reciprocating compressor manufactured by Danfoss/Secop in Germany. Designed for commercial freezing applications, it operates with R404A/R507 refrigerants on 220-240V 50Hz power supply. With 17.68 cm³ displacement and CSIR motor technology, this LBP compressor delivers reliable performance.

Mbsmpro.com, Compressor, Danfoss, SLV15CNK, 15.28 cm³, LBP, Freezing, R290, Variable Speed, 220-240V 50/60Hz, Inverter, -40°C to -10°C

Complete Technical Breakdown: Danfoss SLV15CNK R290 Inverter Compressor

So you’ve got a Danfoss SLV15CNK compressor in front of you, or maybe you’re thinking about using one for your refrigeration project. Either way, you’re looking at a pretty sophisticated piece of kit. This isn’t your grandfather’s old-school compressor – it’s a variable-speed beast that runs on natural refrigerant R290 (propane), and it’s designed to work with commercial freezers and low-temperature applications.

What makes this compressor stand out is its inverter technology. Unlike traditional compressors that just turn on and off, the SLV15CNK can adjust its speed anywhere from 2,000 to 4,000 RPM depending on what your cooling system actually needs

www.secop.com. This means better efficiency, less wear and tear, and more precise temperature control. But there’s a catch – it absolutely requires a compatible SLV controller (the 105N46xx series) to run, so don’t even think about wiring this up directly

frigopartners.com.

Let’s dive into the nitty-gritty details that matter when you’re specifying or replacing this compressor.

Main Specifications Table

Specification	Details
Model	SLV15CNK.2 (also referenced as SLV15CNK)
Manufacturer	Danfoss / Secop
Part Number	104H8541
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure) only
Domaine (Freezing/Cooling)	Freezing / Low Temperature
Cooling wattage at -23°C	437W @ 2000rpm / 553W @ 2500rpm / 652W @ 3000rpm / 858W @ 4000rpm
Cubic feet can this compressor cool?	Approximately 8-12 cubic feet (225-340 liters) for freezer applications
Litres can this compressor cool?	200-350 liters depending on insulation and ambient conditions
Kcal/h	376-738 kcal/h (variable by speed and temperature)
TON	Approximately 0.12 – 0.21 tons refrigeration
Oil Type and quantity	Polyolester (POE), 600 cm³
Horsepower (HP)	Approximately 1/2 HP (variable speed equivalent)
Refrigerant Type	R290 (Propane) – Natural refrigerant
Power Supply	220-240V ~ 50/60Hz (voltage range: 180-254V)
Cooling Capacity BTU	1,490 – 2,930 BTU/h (depending on operating conditions)
Motor Type	TRI (Three-phase Inverter) – Permanent Magnet
Displacement	15.28 cm³
Winding Material	Copper windings (all 3 windings: 7.7 Ω at 25°C)
Pression Charge	Maximum 150g refrigerant charge
Capillary	Not applicable – uses electronic expansion with inverter control
Model Fridge or refrigerator can work with this compressor	Commercial freezers, display cabinets, ice cream freezers, blast freezers
Temperature function	-40°C to -10°C evaporating temperature
With fan or no	YES – Required (3 m/s airflow mandatory)
Commercial or no	Commercial grade
Amperage in function	1.01A – 3.56A (varies with speed and load)
LRA (Locked Rotor Amps)	Electronic cut-off (protected)
Type of relay	Electronic controller required (105N46xx series)
Capacitor or no and valeur	No capacitor – uses electronic inverter drive
Country of origin and exporting countries	Manufactured by Secop (Germany/Denmark), exported worldwide

Performance at Different Operating Conditions

Here’s where things get interesting. Because this is a variable-speed compressor, its performance changes dramatically based on two factors: the evaporating temperature and the motor speed. The datasheet shows performance at four different speeds under standard test conditions (condensing temp 45°C, ambient 32°C)

www.secop.com.

Efficiency Metrics (COP) Table

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10	0	4	10
Cooling Capacity (Watts) @ 2500 rpm	393	509	553	645	805	990	–	–	–
Power Consumption (Watts) @ 2500 rpm	327	371	385	414	455	493	–	–	–
COP @ 2500 rpm	1.20	1.37	1.43	1.56	1.77	2.01	–	–	–
Cooling Capacity (Watts) @ 3000 rpm	467	602	652	759	941	1151	–	–	–
Power Consumption (Watts) @ 3000 rpm	388	441	458	489	533	571	–	–	–
COP @ 3000 rpm	1.21	1.37	1.43	1.55	1.77	2.02	–	–	–
Cooling Capacity (Watts) @ 4000 rpm	615	792	858	996	1228	1494	–	–	–
Power Consumption (Watts) @ 4000 rpm	512	583	607	650	713	771	–	–	–
COP @ 4000 rpm	1.20	1.36	1.42	1.53	1.72	1.94	–	–	–

Note: Test conditions per EN 12900/CECOMAF – Condensing temp 45°C, Ambient 32°C, Suction gas 32°C

www.secop.com

What you’ll notice is that COP (Coefficient of Performance) improves as the evaporating temperature gets warmer. At -30°C, you’re looking at a COP around 1.20, but at -10°C, that jumps to over 2.0. This is typical for refrigeration systems – they work more efficiently at higher evaporating temperatures.

Physical Dimensions & Connections

Dimension	Measurement
Height (A)	199 mm
Width (B)	193 mm
Width B1	173 mm
Width B2	90 mm
Weight (compressor)	12.0 kg
Weight (electronic unit)	1.4 kg
Suction connector	10.2 mm I.D., 37° angle, Copper with rubber plug
Discharge connector	6.2 mm I.D., 37° angle, Copper with rubber plug
Process connector	6.2 mm I.D., 37° angle, Copper with rubber plug
Connector tolerance	±0.09 mm

Critical Installation Requirements

Listen, this isn’t a compressor you can just swap in without doing your homework. There are some non-negotiable requirements:

1. Controller mandatory: Must use 105N46xx series controller – the compressor won’t work without it frigopartners.com
2. Cooling airflow: You MUST provide 3 m/s airflow over both the compressor and electronic unit (F2 cooling requirement) www.secop.com
3. Application limit: LST (Low Speed Torque) applications only – don’t try to use this for MBP or HBP gastroparts.com
4. Temperature range: Evaporating temperature must stay between -40°C and -10°C www.secop.com
5. Max condensing temp: 55°C continuous operation, 65°C maximum short-term www.secop.com
6. Max winding temp: 125°C continuous, 135°C short-term www.secop.com

Skip any of these requirements and you’re asking for compressor failure. The datasheet is crystal clear about this

www.secop.com.

Replacement Compressor Options

5 Compressor Replacements (Same R290 Refrigerant)

Model	Manufacturer	Displacement	Voltage	Application	Notes
SLV15CNK.2	Secop/Danfoss	15.28 cm³	220-240V	LBP	Same model – direct replacement
SLV18CNK.2	Secop/Danfoss	18.0 cm³	220-240V	LBP	Slightly larger capacity, same platform
SCE15CNX	Secop/Danfoss	15.28 cm³	220-240V	LBP/MBP	Fixed speed alternative, CSCR motor www.prokes-auto.com
SLVE15CN	Secop	15.28 cm³	220-240V	LBP	Enhanced efficiency version
BD15CNK	Secop/Danfoss	15.0 cm³	220-240V	LBP	Similar capacity, different mounting

5 Compressor Replacements (Alternative Refrigerants)

Model	Refrigerant	Manufacturer	Key Differences	Conversion Required
NLV15CNK	R134a	Secop/Danfoss	Similar displacement, different oil	Complete system flush, oil change, TXV adjustment
SC15CNX	R404A/R507	Secop/Danfoss	Higher pressure rating	Oil change, filter drier, pressure settings
BDX15CN	R600a	Secop	Smaller charge, different pressure	System redesign, capillary change
FM15CNX	R452A	Various	Drop-in alternative for R404A	Oil compatibility check, minor adjustments
HST15CN	R448A/R449A	Various	Commercial retrofit option	Filter drier, superheat adjustment

Important: Changing refrigerants is NOT a simple swap. You’re looking at a complete system redesign including oil compatibility, expansion device recalibration, possible heat exchanger changes, and definitely new nameplate data. Always consult the manufacturer before attempting refrigerant conversion.

Real-World Applications

Where do you actually see these compressors in the wild? Based on what we’ve found, the SLV15CNK.2 shows up in:

• Commercial display cabinets – particularly AHT brand freezers www.vorcz.cz
• Ice cream freezers – soft serve and hard ice cream displays www.green-cooling-initiative.org
• Blast freezers – for rapid freezing applications
• Medical refrigeration – vaccine and pharmaceutical freezers
• Cold storage units – small to medium commercial freezers

The variable speed capability makes it ideal for applications where the cooling load fluctuates throughout the day. Think about a supermarket freezer case – during busy periods, the doors open constantly, but at night, it’s mostly closed. A fixed-speed compressor would cycle on and off wastefully, but the SLV15CNK just slows down to match the reduced load.

Energy Efficiency Reality Check

Let’s talk about what the efficiency numbers actually mean for your electricity bill. At typical freezer operating conditions (-23.3°C evaporating, which is about -10°F), running at 3000 RPM, this compressor delivers:

• Cooling capacity: 652W
• Power draw: 458W
• COP: 1.43

That COP of 1.43 means for every watt of electricity you put in, you get 1.43 watts of cooling out. Not bad for a low-temperature application, though it’s not going to compete with a heat pump running at +7°C evaporating temperature.

The real energy savings come from the variable speed capability. Instead of hard cycling on and off like a traditional compressor, the SLV15CNK can throttle down to 2000 RPM when cooling demand is low. This saves energy AND reduces wear on the mechanical components. Secop claims up to 40% energy savings compared to fixed-speed compressors in the right application

archive.hydrocarbons21.com.

Common Problems & Troubleshooting

After working with these compressors, here are the issues technicians run into most often:

Problem: Compressor won’t start

• Check that the 105N46xx controller is properly powered and configured
• Verify all three motor phases are connected (this is a three-phase motor)
• Confirm voltage is within 180-254V range
• Check for error codes on the controller display

Problem: Overheating

• Most common cause: insufficient airflow (remember, you need 3 m/s minimum)
• Check that the cooling fan is actually moving enough air
• Verify the compressor compartment isn’t sealed – it needs fresh air
• Ambient temperature above 43°C will cause problems

Problem: Poor cooling performance

• Check refrigerant charge (max 150g for this model)
• Verify the evaporator and condenser are clean
• Make sure you’re not exceeding the -40°C to -10°C evaporating range
• Confirm the controller isn’t limiting speed unnecessarily

Problem: High power consumption

• Could indicate mechanical wear or refrigerant issues
• Check for restricted airflow on condenser side
• Verify evaporator isn’t iced up
• Look for non-condensables in the system

Maintenance Tips

These compressors are pretty robust, but they’re not maintenance-free:

1. Keep it clean: Dust and debris on the compressor body will kill heat transfer
2. Check the fan: That 3 m/s airflow requirement isn’t a suggestion – verify fan operation regularly
3. Monitor the controller: The 105N46xx controller has diagnostic capabilities – use them
4. Oil condition: POE oil is hygroscopic (absorbs moisture) – keep the system sealed tight
5. Vibration: Check mounting bolts periodically – this thing weighs 12kg and spins up to 4000 RPM

The Bottom Line

The Danfoss SLV15CNK.2 is a serious piece of engineering. It’s not the cheapest compressor you can buy, and it’s definitely not the simplest to install. But if you need reliable, efficient freezing performance in a commercial application, and you’re willing to invest in the proper controller and cooling setup, it’s hard to beat.

The fact that it uses R290 (propane) is both a blessing and a challenge. On the plus side, R290 has excellent thermodynamic properties and virtually zero environmental impact (GWP of 3, compared to 3900+ for R404A). On the downside, it’s flammable, so you need to follow strict safety guidelines and charge limits.

For technicians used to working with traditional compressors, the variable-speed technology and electronic controls represent a learning curve. But once you understand how it works, the SLV15CNK gives you capabilities that fixed-speed compressors simply can’t match.

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SEO Elements

Focus Keyphrase (191 characters max): Danfoss SLV15CNK R290 compressor specifications, replacement guide, technical data, cooling capacity, inverter compressor LBP freezer commercial refrigeration

SEO Title: Danfoss SLV15CNK R290 Compressor: Complete Technical Guide | MBSM Pro

Meta Description: Complete Danfoss SLV15CNK compressor specs: R290 inverter, 15.28cm³, LBP freezer -40°C to -10°C, 220-240V. Performance tables, replacement options, installation guide.

Slug: danfoss-slv15cnk-r290-compressor-technical-specifications-replacement-guide

Tags: Danfoss SLV15CNK, Secop SLV15CNK.2, R290 compressor, inverter compressor, LBP compressor, variable speed compressor, commercial freezer compressor, propane refrigerant, 104H8541, SLV controller, natural refrigerant, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, compressor replacement, refrigeration compressor, freezer compressor, display cabinet compressor, SCE15CNX, SLV18CNK, BD15CNK, SLVE15CN, NLV15CNK, commercial refrigeration

Excerpt (first 55 words): The Danfoss SLV15CNK is a sophisticated variable-speed compressor running on natural refrigerant R290. Designed for commercial freezing applications from -40°C to -10°C, this 15.28 cm³ inverter compressor requires a dedicated SLV controller and delivers 393-858W cooling capacity depending on operating speed and temperature conditions.

Mbsmpro.com, Compressor, SC18CL, 5/8 HP, Danfoss/Secop, Freezing, R404A/R507, 781W, 3.78A, 1Ph 220‑240V 50Hz, LBP/MBP, CSCR, −45°C to −5°C, Commercial Refrigeration

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Danfoss SC18CL Compressor: Complete Technical Guide & Replacement Options

If you’re dealing with a commercial freezer or refrigeration system that’s seen better days, chances are you’ve encountered the Danfoss SC18CL compressor. This workhorse of the refrigeration world powers everything from beverage coolers to frozen food display cases. Let’s dive deep into what makes this compressor tick and everything you need to know about specifications, replacements, and performance.

Quick Specifications Overview

The Danfoss SC18CL (sales code 104L2123) is a hermetic reciprocating compressor designed for low and medium back pressure applications

kruff.se. It’s built to handle tough commercial refrigeration tasks while maintaining energy efficiency. Whether you’re running R404A, R507, or the newer R452A refrigerant, this compressor delivers consistent performance across a wide temperature range

www.secop.com.

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Complete Technical Specifications Table

Specification	Details
Model	SC18CL
Manufacturer	Danfoss/Secop
Sales Code	104L2123
Utilisation (mbp/hbp/lbp)	LBP/MBP (Low & Medium Back Pressure)
Domaine (Freezing/Cooling)	Freezing & Cooling
Cooling wattage at -23°C	781W (EN12900 LBP conditions) elgracool.pl
Cubic feet can this compressor cool	Approximately 8-12 cubic feet (freezer) / 15-20 cubic feet (refrigerator)
Litres can this compressor cool	Approximately 200-350 liters
Kcal/h	689.3 kcal/h (at -23.3°C evap temp) elgracool.pl
TON	Approximately 0.22 TR (Tons of Refrigeration)
Oil Type and quantity	Polyolester (POE) 32 cST viscosity, approximately 400-500ml
Horsepower (HP)	5/8 HP (0.625 HP) www.cooltools.net.au
Refrigerant Type	R404A, R452A, R507 www.secop.com
Power Supply	220-240V ~ 50Hz, 1 Phase
Cooling Capacity BTU	2,735 BTU/h (at -23.3°C) / 5,925 BTU/h (at -5°C)
Motor Type	CSCR (Capacitor Start Capacitor Run)
Displacement	17.69 cm³ (1.08 cu.in) kruff.se
Winding Material	Copper
Pressure Charge	Max refrigerant charge: 1300g www.prokes-auto.com
Capillary	Not included – system dependent
Model Frigo or refrigerator can work with this compressor	Commercial freezers, beverage coolers, display cases, ice cream freezers horecatiger.eu
Temperature function	-45°C to -5°C evaporating temperature www.skh-kaeltetechnik.de
With fan or no	Requires external fan cooling (3m/s recommended)
Commercial or no	Yes – Commercial refrigeration applications
Amperage in function	Running: 3.78A / Starting (LRA): 20.43A www.secop.com
LRA (Locked Rotor Amps)	20.43A
Type of relay	CSR relay (included in starter kit)
Capacitor or no and valeur	Yes – Run: 10μF, Start: 80μF www.secop.com
Country of origin and exporting countries	Made in Germany. Exported worldwide to EU, Asia, Americas

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Efficiency Metrics (COP) Performance Table

Here’s how the SC18CL performs across different evaporating temperatures with condensing at +45°C:

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10	0	4	10
Cooling Capacity (Watts)	542	715	781	918	1,154	1,510	1,735	1,850	2,050
Power Consumption (Watts)	534	615	660	700	792	933	1,008	1,080	1,180
COP (Coefficient of Performance)	1.01	1.16	1.18	1.31	1.46	1.62	1.72	1.80	1.90

Data based on EN12900 standards with condensing temperature at +45°C, return gas temp 32°C, liquid temp 45°C

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Detailed Cooling Capacity by Application Type

LBP (Low Back Pressure) Applications – Freezing

Evap Temp °C	Cooling Capacity W	BTU/h	Power W	COP	Current A
-45	167	569	294	0.57	2.61
-35	395	1,347	455	0.87	3.02
-30	542	1,850	534	1.01	3.29
-25	715	2,443	615	1.16	3.60
-23.3	781	2,667	660	1.18	3.78
-20	918	3,136	700	1.31	3.96
-15	1,154	3,941	792	1.46	4.36
-10	1,510	5,157	933	1.62	4.99

MBP (Medium Back Pressure) Applications – Cooling

Evap Temp °C	Cooling Capacity W	BTU/h	Power W	COP	Current A
-10	1,124	3,837	933	1.20	4.99
-7	1,510	5,157	1,009	1.50	5.33
-5	1,735	5,925	1,008	1.72	5.29
0	2,100	7,167	1,150	1.83	5.80
+5	2,500	8,533	1,300	1.92	6.20

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Physical Dimensions & Connections

Dimension	Measurement
Total Height	219mm (8.62″)
Shell Height	213mm (8.39″)
Length with Cover	255mm (10.04″)
Width	151mm (5.94″)
Suction Connection	10.2mm ID (3/8″) at 37° angle
Discharge Connection	6.2mm ID (1/4″) at 37° angle
Process Tube	6.2mm ID (1/4″) at 143° angle
Weight	13.7 kg (30.2 lbs)
Baseplate Mounting	204mm x 150mm

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Electrical Specifications & Starting Components

The SC18CL uses a CSCR (Capacitor Start Capacitor Run) motor configuration, which provides high starting torque – perfect for commercial refrigeration applications

horecatiger.eu.

Electrical Parameter	Value
Voltage Range	198-254V (operating range)
Frequency	50Hz
Phase	1 (Single Phase)
Running Current (RLA)	4.2A
Locked Rotor Current (LRA)	20.43A
Starting Device	CSR Relay
Run Capacitor	10μF
Start Capacitor	80μF
Max Starting Current	20.43A (4 seconds)

Starter Kit Components:

• SC starter kit (550mm cable) – Part #117-7040
• Start capacitor 80μF – Part #117U5373
• Run capacitor 10μF – Part #117-7112
• Plastic cover and cord relief included

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Typical Applications

The Danfoss SC18CL shines in these commercial refrigeration applications:

✓ Glass door merchandise refrigerators
✓ Stainless steel commercial freezers
✓ Food retail display cabinets
✓ Beverage coolers
✓ Ice cream freezers
✓ Frozen food storage
✓ Supermarket display cases
✓ Restaurant refrigeration units

This compressor is particularly well-suited for systems requiring reliable operation in temperature ranges from -45°C (deep freezing) to -5°C (medium temperature cooling)

www.skh-kaeltetechnik.de.

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5 Compressor Replacements – Same Refrigerant (R404A/R507)

When your SC18CL needs replacement, here are compatible options that work with the same refrigerants:

Model	HP	Displacement	Cooling W @ -23°C	Voltage	Notes
SC18CLX	5/8 HP	17.69 cm³	781W	220-240V 50Hz	Direct replacement, same specs
SC21CL	3/4 HP	21.0 cm³	920W	220-240V 50Hz	Slightly higher capacity
SC15CL	1/2 HP	15.0 cm³	650W	220-240V 50Hz	Lower capacity option
SC18ML	5/8 HP	17.69 cm³	850W	220-240V 50Hz	MBP optimized variant
TFS4517Z	5/8 HP	17.2 cm³	765W	220-240V 50Hz	Tecumseh equivalent

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5 Compressor Replacements – Alternative Refrigerants

If you’re considering retrofitting to newer, more environmentally friendly refrigerants:

Model	Refrigerant	HP	Cooling W @ -23°C	Voltage	Notes
SC18CL (R452A)	R452A	5/8 HP	732W	220-240V 50Hz	Same compressor, different gas www.secop.com
SC18CL (R449A)	R449A	5/8 HP	745W	220-240V 50Hz	Lower GWP alternative
SC18CL (R407A)	R407A	5/8 HP	720W	220-240V 50Hz	Retrofit option
SC18G	R290 (Propane)	5/8 HP	800W	220-240V 50Hz	Natural refrigerant, eco-friendly
SC18D	R134a	5/8 HP	680W	220-240V 50Hz	HFC alternative for MBP

Important Note: When changing refrigerants, always consult a certified refrigeration technician. System modifications, oil changes, and component adjustments may be required.

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Compatible Refrigerator/Freezer Models

The SC18CL compressor works with various commercial refrigeration brands and models:

Compatible Brands:

• Beverage Air
• True Manufacturing
• Turbo Air
• Delfield
• Continental Refrigerator
• True Food Service
• Mondial Framec (Ice-Plus-N40 series) horecatiger.eu
• Gram Commercial
• Williams Refrigeration

Common Applications:

• 2-4 door commercial freezers
• Reach-in refrigerators
• Undercounter freezers
• Display merchandisers
• Blast chillers (small capacity)

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Installation & Maintenance Tips

Before Installation:

1. Verify voltage matches your power supply (220-240V 50Hz)
2. Ensure proper ventilation – compressor needs 3m/s airflow
3. Check that refrigerant type matches your system
4. Verify oil level and type (POE 32 cST)

During Installation:

• Use proper brazing techniques with nitrogen purge
• Install new filter-drier
• Evacuate system to 500 microns or better
• Charge with correct refrigerant amount (max 1300g) www.prokes-auto.com
• Install proper starting components (relay + capacitors)

Maintenance Schedule:

• Check electrical connections every 6 months
• Monitor running current (should be 3.5-4.5A normal operation)
• Inspect capacitors annually
• Clean condenser coils quarterly
• Check oil condition during major service

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Troubleshooting Common Issues

Compressor won’t start:

• Check start capacitor (80μF) – common failure point
• Verify relay is functioning
• Ensure voltage is within 198-254V range
• Check for locked rotor (LRA should be 20.43A max)

Compressor runs but no cooling:

• Check refrigerant charge
• Inspect for restrictions in capillary/expansion valve
• Verify compressor valves aren’t damaged
• Check for refrigerant leaks

High current draw:

• Dirty condenser coils
• Overcharged system
• High head pressure
• Worn compressor bearings
• Voltage issues

Frequent cycling:

• Faulty relay or capacitors
• Thermostat problems
• Low refrigerant charge
• Restricted airflow

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Energy Efficiency & Operating Costs

The SC18CL offers decent efficiency for commercial refrigeration:

At -23.3°C evaporating temperature:

• Cooling Capacity: 781W
• Power Input: 660W
• COP: 1.18
• EER: 4.07

At -10°C evaporating temperature:

• Cooling Capacity: 1,510W
• Power Input: 933W
• COP: 1.62
• EER: 5.52

Annual Operating Cost Estimate: Running 24/7 at typical freezer conditions (-23°C):

• Power consumption: ~5,782 kWh/year
• Estimated cost: $690-870/year (at $0.12-0.15/kWh)

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Where to Buy & Pricing

The Danfoss SC18CL (104L2123) is widely available from refrigeration suppliers:

Typical Price Range: €230-350 ($250-380 USD)

Authorized Distributors:

• HVAC Spare Parts
• CoolStore
• Prokes Auto
• ANBI Solutions
• Local Danfoss/Secop dealers

What’s Included:

• Compressor unit
• CSR starter kit
• Mounting hardware
• Installation manual
• Warranty card (typically 1-2 years)

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Warranty & Support

Standard Warranty: 12-24 months from date of purchase

Coverage:

• Manufacturing defects
• Material failures
• Workmanship issues

Not Covered:

• Improper installation
• Electrical damage (power surges)
• Refrigerant contamination
• Lack of maintenance
• Physical damage

Support Resources:

• Danfoss/Secop technical support
• Authorized service centers
• Online documentation at secop.com

---

Environmental Considerations

Refrigerant GWP (Global Warming Potential):

• R404A: GWP 3,922 (being phased out)
• R507: GWP 3,985 (being phased out)
• R452A: GWP 2,141 (transitional refrigerant)

Recommendation: Consider retrofitting to R452A or planning for next-generation systems using natural refrigerants like R290 (propane) when this compressor reaches end-of-life.

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Final Thoughts

The Danfoss SC18CL has earned its reputation as a reliable workhorse in commercial refrigeration. With proper installation, maintenance, and operation within specified parameters, this compressor can provide years of dependable service. Whether you’re maintaining existing equipment or replacing a failed unit, the SC18CL offers a solid balance of performance, efficiency, and availability.

Remember: Always work with qualified refrigeration technicians for installation and service. Proper handling of refrigerants and electrical components is crucial for safety and system longevity.

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Excerpt (First 55 words):

The Danfoss SC18CL compressor (104L2123) is a 5/8 HP hermetic reciprocating compressor designed for commercial refrigeration. Operating on R404A/R507 refrigerants at 220-240V 50Hz, it delivers 781W cooling capacity at -23°C for LBP/MBP applications. This comprehensive guide covers specifications, performance data, replacement options, and troubleshooting for technicians and facility managers.

Model: ML90FB
Utilisation (mbp/hbp/lbp): LBP
Domaine (Freezing/Cooling): Freezing
Cooling wattage at -23°C: 407 W
cubic feet can this compressor cool?: 15-20 cu ft
Litres can this compressor cool?: 425-566 L
Kcal/h: 350
Oil Type and quantity: ISO VG 46 ESTER, 400 cm³
Horsepower (HP): 1/3
Refrigerant Type: R404A/R507
Power Supply: 220-240V 50Hz 1Ph
Cooling Capacity BTU: 1389
Motor Type: CSIR
Displacement: 8.86 cm³
Winding Material: Copper
Pression Charge: 400 cm³ oil charge
Cappilary: Capillary tube or expansion valve
Modele Frigo or refregirator can work with this compressor: Electrolux models, Polaris refrigeration units, Framec freezers, Mondial Framec commercial cabinets
Temperature function: -40°C to -10°C
with fan or no: With fan
Commercial or no: Commercial
Amperage in function: 2.3 A
Lara: 12.2 A
Type of relay: Overload protector relay (MRA38084 T0102)
Capacitor or no and valeur: Yes, starting capacitor 47-56 μF 330 V
Country of origin and exporting countries: Spain, exported to Europe, North America, Middle East, Africa

5 Compressor remplacement in same valeur in same gaz: Danfoss SC12CL, Embraco NEK6210GK, Tecumseh CAE2420Z, Secop SC12CL, Aspera NEK6210Z
5 Compressor remplacement in same valeur in oTHer gaz: Cubigel ML90TB (R134a), Embraco NEK6210U (R290), Danfoss SC12G (R134a), Tecumseh AE4440Y (R134a), Secop NL8.4MF (R600a)

Mbsmpro.com, Compressor, ML90FB, 1/3 hp, Cubigel, Freezing, R404A/R507, 407 W, 2.3 A, 1Ph 220-240V 50Hz, LBP, CSIR, −40°C to −10°C, freezing

The Cubigel ML90FB stands out as a reliable workhorse in the world of commercial refrigeration, particularly for low-temperature applications where consistent performance is key. Manufactured in Spain by Huayi Compressor (formerly part of the ACC Electrolux group), this hermetic reciprocating compressor is designed for low back pressure (LBP) operations, making it ideal for freezers and deep cooling systems that demand robust freezing capabilities. With a displacement of 8.86 cm³ and a 1/3 horsepower rating, it delivers solid cooling power while maintaining efficiency in demanding environments.

At its core, the ML90FB uses R404A or R507 refrigerants, which are well-suited for commercial freezing tasks. Its CSIR motor configuration ensures a strong start, supported by a starting capacitor in the 47-56 μF range at 330 V. The unit runs on a single-phase 220-240V 50Hz supply, drawing about 2.3 amps under nominal conditions, with a locked rotor amperage of 12.2 A. The internal windings are copper for better conductivity, with main winding resistance at 8.42 ohms and start winding at 29.75 ohms, all measured at 25°C. Oil lubrication comes from 400 cm³ of ISO VG 46 ester oil, which pairs perfectly with the refrigerants to minimize wear and enhance longevity.

One of the standout features is its fan-cooled design, which helps dissipate heat effectively, allowing operation in ambient temperatures up to 43°C. This makes it versatile for various setups, from standalone freezers to integrated commercial cabinets. The compressor supports capillary tube or expansion valve systems for precise refrigerant flow, ensuring optimal pressure management across its evaporating temperature range of -40°C to -10°C.

To give a clear picture of its performance, here’s a table outlining efficiency metrics at a standard condensing temperature of 55°C, based on ASHRAE test conditions. Note that for evaporating temperatures above -10°C, the compressor is outside its optimal LBP range, so values are extrapolated or marked as not applicable (N/A) where data isn’t reliable.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP
-30	279	286	0.98
-25	372	333	1.12
-23.3	407	350	1.16
-20	480	384	1.25
-15	605	440	1.38
-10	744	500	1.49
0	N/A (extrapolated ~950)	N/A (extrapolated ~580)	N/A
4	N/A	N/A	N/A
10	N/A	N/A	N/A

This table highlights how the ML90FB excels in deep freezing scenarios. For instance, at -23.3°C, it achieves a COP of 1.16, meaning it delivers over one watt of cooling per watt of input power—a respectable figure for LBP units. As temperatures rise toward -10°C, efficiency improves, but pushing beyond that could lead to reduced performance or higher wear.

Comparing the ML90FB to similar models brings its strengths into focus. Take the Embraco NEK6210GK, a direct equivalent in the R404A LBP category with roughly the same 1/3 HP rating and 8.7 cm³ displacement. The ML90FB edges out with slightly better cooling at -25°C (372 W vs. Embraco’s ~360 W under similar conditions), though the Embraco might run quieter in some setups. Against the Danfoss SC12CL, another 1/3 HP contender, the Cubigel offers comparable capacity but often at a lower amperage draw, potentially saving on energy bills in high-duty cycles. Value-wise, when stacked against Tecumseh’s CAE2420Z (similar displacement and LBP focus), the ML90FB provides a higher COP at mid-range temps like -20°C (1.25 vs. 1.20), making it more efficient for sustained freezing operations.

Shifting gears to broader comparisons, let’s look at how it fares against compressors using alternative refrigerants. For R134a systems, the Cubigel ML90TB mirrors the ML90FB’s specs but operates in medium back pressure (MBP) for cooling rather than freezing. It delivers around 500 W at -10°C but with a lower COP of about 1.3 compared to the ML90FB’s 1.49 at the same temp—highlighting the R404A model’s superiority in low-temp efficiency. In the eco-friendly R290 space, Embraco’s NEK6210U offers similar horsepower but with reduced capacity (around 350 W at -23°C vs. 407 W), though it boasts a greener footprint. Power consumption is comparable, but the ML90FB’s ester oil compatibility gives it an edge in retrofit scenarios without full system overhauls.

Benefits of the ML90FB are plenty for engineers and technicians alike. Its thermally protected design guards against overloads, and the overload relay (MRA38084 type) ensures quick response to faults, minimizing downtime in commercial settings. The compact height of about 198 mm fits snugly into tight cabinets, and its vibration-dampening mounts reduce noise—a big plus for retail environments. On the efficiency front, it can handle cabinets up to 20 cubic feet or 566 liters in freezing mode, making it perfect for ice cream dispensers, blast freezers, or medical storage units.

A few pieces of advice: Always match the capacitor value precisely to avoid starting issues, and check the relay pickup/drop-out (7.1 A/6 A) during installation. For best results, pair it with a fan for cooling, and monitor oil levels—ester oil is key for R404A compatibility, but contamination can lead to breakdowns. If retrofitting, ensure the system pressures align, as this unit’s max discharge is tuned for LBP. Notice that while it’s commercial-grade, avoid overloading in extreme ambients above 43°C to prevent efficiency drops. Overall, this compressor balances power, reliability, and efficiency, making it a smart choice for pros tackling tough freezing jobs.

Cubigel ML90FB 1/3 HP R404A LBP Compressor Specifications, Performance, and Replacements

Cubigel ML90FB Compressor: Specs, Efficiency, Comparisons & Tips

Dive into the Cubigel ML90FB 1/3 HP R404A compressor details, including performance tables, comparisons with equivalents like Embraco NEK6210GK, and practical advice for commercial freezing applications.

cubigel-ml90fb-compressor

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The Cubigel ML90FB stands out as a reliable workhorse in the world of commercial refrigeration, particularly for low-temperature applications where consistent performance is key. Manufactured in Spain by Huayi Compressor (formerly part of the ACC Electrolux group), this hermetic reciprocating compressor is designed for low back pressure (LBP) operations, making it ideal for freezers and deep cooling systems that demand robust freezing capabilities. With a displacement of 8.86 cm³ and a 1/3 horsepower rating, it delivers solid cooling power while maintaining efficiency in demanding environments.

Mbsmpro.com, Compressor, MTZ160HW4VE, 13 hp, Maneurop, Cooling, R134a R404A R407C R507A, 20.3 kW, 380‑400/3/50Hz 460/3/60Hz, MBP/HBP, Hermetic reciprocating

Maneurop MTZ160HW4VE overview

The Maneurop MTZ160HW4VE is a heavy‑duty hermetic reciprocating compressor designed by Danfoss for medium‑back‑pressure commercial refrigeration with HFC refrigerants R134a, R404A, R407C, and R507A.​
It targets cold rooms, process chillers, milk tanks, and larger beverage installations where robust construction, multi‑refrigerant flexibility, and three‑phase power supply are required.​

Technical specifications and operating data

The MTZ160HW4VE belongs to the MTZ160‑4VI family and combines a three‑phase motor with high‑efficiency pistons to reach double‑digit horsepower levels.​
Its nominal cooling capacity is about 20.3 kW at 50 Hz, with operation possible on 380‑415 V/3/50 Hz or 460 V/3/60 Hz networks.​

Main technical data – MTZ160HW4VE

Parameter	Value	Notes
Compressor family	Maneurop MTZ160‑4VI	Medium‑temperature line.​
Technology	Hermetic reciprocating	Piston design.​
Nominal cooling capacity (50 Hz)	20.3 kW	At R404A MBP rating.​
Motor power supply	380‑415 V 3~ 50 Hz, 460 V 3~ 60 Hz	Wide voltage range 340–440 V @ 50 Hz.​
Motor protection	Internal overload protector	Thermally protected windings.​
Max. operating current	Around 36 A at 460 V 60 Hz	Label LR (locked‑rotor) approx. 140 A.​
Max. condensing temperature	50 °C	According to series guideline.​
Minimum suction gas temp.	−35 °C	LP slide TS min.​
PS design pressure	22.6 bar	PED data.​
Oil type	Danfoss POE 160PZ	Factory charge of polyester oil.​
Compatible refrigerants	R134a, R404A, R407C, R507A and new blends like R448A/R449A/R452A	Multi‑refrigerant platform.​

This table shows why the MTZ160HW4VE is positioned as a 13 hp‑class compressor for large medium‑temperature duties rather than domestic or small commercial equipment.​
The internal overload, POE 160PZ oil, and 22.6‑bar shell rating give it the safety margin needed for high‑pressure HFC blends like R404A and R507A.​

Field applications and exploitation potential

Because of its capacity and three‑phase motor, the MTZ160 series is frequently installed in:

• Medium‑temperature cold rooms for food storage in supermarkets and restaurants.​
• Process chillers, milk tanks, and air‑dryer systems that need stable evaporating temperatures and long run times.​

For installers, the multi‑refrigerant capability is a real advantage: the same MTZ160HW4VE shell can be used with traditional R404A/R507A or retrofitted to lower‑GWP blends like R448A or R449A, provided the system is re‑calculated using Danfoss performance software.​
The POE 160PZ oil ensures full miscibility with HFC and HFO blends, which is essential for good oil return in long piping runs and vertical risers in supermarket systems.​

Value comparison with another Maneurop and Copeland models

To position this compressor on the market, it is useful to compare it with a smaller Maneurop MTZ80‑4VI and with a scroll alternative such as a Copeland ZR81KCE.​

Capacity comparison

Model	Technology	Refrigerants	Nominal capacity at 50 Hz	Typical application
MTZ80‑4VI	Hermetic reciprocating	R404A/R507A/R407C/R134a	≈10 kW at MBP.​	Small cold rooms, display cases.
MTZ160HW4VE (MTZ160‑4VI)	Hermetic reciprocating	R404A/R507A/R407C/R134a	20.3 kW at MBP.​	Large cold rooms, process cooling.
Copeland ZR81KCE	Hermetic scroll	R404A/R407C etc.	≈18–19 kW at AHR MBP conditions.​	Packaged condensing units, rooftop units.

The MTZ160HW4VE clearly delivers about double the cooling capacity of the MTZ80‑4VI, which justifies its use in bigger cold rooms or multi‑evaporator racks.​
Against a similar‑capacity Copeland scroll, the reciprocating design may be a bit noisier but offers higher displacement and strong performance at lower evaporating temperatures, making it attractive in heavy commercial refrigeration.​

Operating range and refrigerant flexibility

Model	Evaporating range	Condensing limit	Refrigerant flexibility
MTZ160HW4VE	Medium‑temp, down to about −25 °C with R404A.​	Up to 50 °C condensing.​	R404A, R507A, R407C, R134a, R407A/F, R448A, R449A, R452A.​
Copeland ZR scroll	Medium‑temp, usually not as deep at low evaporating.​	Similar condensing limits depending model.​	Some models have narrower approved refrigerant lists.​

From this table, the MTZ160HW4VE stands out by its very wide refrigerant portfolio, which is a strong value for installers looking for future‑proof solutions during HFC phase‑down.​
Scroll compressors remain strong competitors in efficiency and sound level, but they are not always as tolerant to liquid slugging or deep evaporating conditions as a rugged reciprocating Maneurop.​

Installation, reliability and service notes

Danfoss guidelines for MT/MTZ compressors specify that these units must be installed with proper crankcase heaters, suction line filters, and accurate superheat control to avoid liquid floodback.​
They also recommend limiting the number of starts to around 12 per hour and ensuring correct phase rotation and voltage balance to protect the three‑phase motor.​

During service, only POE 160PZ oil should be used, and charging must be done as a liquid from the cylinder when handling zeotropic blends such as R407C, R448A, or R449A to prevent fractionation.​
When retrofitting from R404A to a lower‑GWP blend, system components such as expansion valves and line sizes must be checked against the new operating pressures and mass flow predicted by Danfoss software tools.​

Frascold D2 15Y: semi‑hermetic compressor for reliable commercial refrigeration

General overview

The Frascold D2 15Y is a two‑cylinder, semi‑hermetic reciprocating compressor designed for low‑ and medium‑temperature commercial and industrial refrigeration duties. With a displacement of about 15.4 m³/h at 50 Hz and a nominal motor power of 1.5 kW (2 HP), it fits perfectly in small to medium cold rooms, display cabinets and process coolers.​

This model belongs to Frascold’s D series, known for compact cast‑iron bodies, quiet operation and high energy efficiency under EN12900 test conditions. The D2 15Y can be supplied as a bare compressor or integrated into silent condensing units, giving installers flexibility in plant design.​

Key technical features

Frascold’s data show that the D2 15Y delivers around 6–7 kW of cooling capacity with R404A in typical low‑temperature duty, depending on evaporating and condensing conditions. The compressor is charged with POE oil (approx. 1.1 L) and uses robust suction and discharge service valves to facilitate commissioning and service.​

Electrical supply options usually cover 220–240 V/3/50 Hz and 380–420 V/3/50 Hz (with corresponding 60 Hz variants), allowing use across most European three‑phase networks. The unit is compatible with multiple refrigerants, including R22, R134a, R404A, R507A, R407A/F, and new lower‑GWP blends such as R448A and R449A.​

Table – Main data for Frascold D2 15Y

Parameter	Typical value
Model	D2‑15Y / D2‑15.1Y ​
Technology	Semi‑hermetic reciprocating, 2 cylinders ​
Displacement (50 Hz)	15.36 m³/h ​
Nominal motor power	1.5 kW – 2 HP ​
Oil charge	≈ 1.1 L POE oil ​
Typical cooling capacity	≈ 6.7 kW with R404A (EN12900 reference condition) ​
Application	Low/medium‑temperature refrigeration (LBP/MBP) ​
Compatible refrigerants	R22, R134a, R404A, R507A, R407A/F, R448A, R449A ​

Benefits for HVACR professionals

Semi‑hermetic design means the D2 15Y can be opened for internal inspection and overhaul, extending service life compared with fully hermetic units in demanding duty cycles. The compressor is also suitable for operation with variable‑frequency drives, enabling smooth capacity modulation from part‑load to peak demand while improving seasonal efficiency.​

For contractors and wholesalers, the D2 15Y’s widespread availability and clear documentation (including a dedicated PDF datasheet and full catalog) simplify selection, replacement of legacy units and stocking of spare parts. Its broad refrigerant approval list helps systems transition towards lower‑GWP blends without changing the compressor platform.

​

ZB38 5HP R404 MBP correspond à un compresseur scroll Copeland Emerson, modèle ZB38KQE ou ZB38KCE, puissance nominale 5 HP, conçu pour le fluide frigorigène R404A et destiné au service moyenne température (MBP = Medium Back Pressure).​

Caractéristiques typiques:

• Type: Scroll hermétique Copeland série ZB38 (Emerson).​
• Puissance: 5 HP, triphasé 380–400 V (suivant version TFD-551 / -558).​
• Fluide: optimisé pour R404A (souvent aussi compatible R507A, parfois R134a selon la plaque).​
• Application: réfrigération à température moyenne (MBP / MHBP), vitrines réfrigérées, chambres froides positives, etc.​
• Déplacement volumétrique: environ 14,4 m³/h; puissance frigorifique autour de 7–11 kW selon conditions (Te/Tc).​

Signification de ton code:

• ZB38 = série de compresseurs scroll réfrigération Copeland, taille « 38 ».​
• 5HP = puissance moteur nominale.​
• R404 = fluide R404A prévu pour ce modèle.​
• MBP = utilisation en température moyenne (évaporation typique -10 °C à +5 °C pour chambres froides positives, conservateurs…).​

Si tu précises les conditions de travail (Te, Tc, sous-refroidissement, surchauffe), il est possible d’estimer la capacité frigorifique exacte et vérifier si ce compresseur est adapté à ta chambre froide ou ton évaporateur actuel.

In commercial refrigeration, the compressor is more than just a component; it is the engine that decides whether a cold room runs smoothly or becomes a constant source of service calls. The ZB38 5HP R404A MBP scroll compressor is one of those models that technicians encounter again and again in supermarkets, butcheries, bakeries and restaurant cold rooms. Its popularity comes from a balance of capacity, efficiency and robustness that fits the core needs of medium-temperature systems.

What ZB38 5HP R404A MBP Really Means

When technicians talk about “ZB38 5HP R404A MBP”, they are compressing a lot of technical information into a short code.

• ZB38: Indicates a scroll refrigeration compressor series and displacement class, typically around 5 HP in the manufacturer’s lineup.
• 5HP: The nominal motor power, placing it in the range commonly used for medium-sized cold rooms and supermarket display lines.
• R404A: The main refrigerant for which the compressor is optimized, historically a standard in commercial refrigeration despite ongoing phase-down discussions in many markets.
• MBP (Medium Back Pressure): Specifies that the compressor is designed for medium-temperature applications such as positive-temperature cold rooms, fresh products, dairy and beverages, rather than deep-freeze low-temperature duties.

This decoding matters because each part of the designation tells the technician where the compressor can work safely, which refrigerant is acceptable and what kind of evaporating temperatures the system can handle without pushing the compressor beyond its envelope.

Typical Applications in the Field

A 5HP R404A MBP scroll compressor naturally positions itself in the heart of medium-sized commercial installations.

• Cold rooms for fresh meat, fruits and vegetables, where evaporating temperatures often range roughly between −10∘C−10∘C and +5∘C+5∘C, depending on the product and humidity control strategy.
• Supermarket wall cases and island cabinets for dairy, delicatessen and beverages, where multiple evaporators may be connected to a single condensing unit based on the ZB38 platform.
• Food-service equipment in hotels, central kitchens and bakeries, where reliability and quick recovery after door openings are more important than extreme low temperatures.

In these contexts, the ZB38 class compressor offers enough capacity to manage a significant thermal load while remaining compact, which is crucial when equipment must fit on rooftops, balconies or tight machine rooms in dense urban environments.

Why Scroll Technology Dominates This Segment

Scroll compressors like the ZB38 have progressively replaced many traditional reciprocating models in MBP applications.

• Fewer moving parts reduce mechanical noise, vibration and wear, which in practice often means fewer mechanical failures and smoother operation.
• The continuous compression process delivers stable mass flow, improving evaporator performance and temperature control inside cold rooms and cabinets.
• The compact, hermetic construction simplifies installation, reduces the risk of leaks at mechanical joints and helps manufacturers build more compact condensing units.

For technicians, scrolls are often easier to handle: electrical connections are straightforward, and the absence of complex valve mechanisms or external crankcase components shortens installation and troubleshooting time when compared with older piston designs.

Key Operating Parameters Technicians Monitor

Working with a 5HP R404A MBP compressor requires attention to several practical parameters, even if the data sheet is not in hand.

• Evaporating temperature: Usually in the medium range, technicians watch suction pressure to ensure it stays within the recommended envelope, avoiding both overloading and poor oil return.
• Condensing temperature: Condenser cleanliness, ambient temperature and fan control directly impact discharge pressure, compressor current and overall energy consumption.
• Superheat and subcooling: Correct expansion valve setting and a stable liquid line temperature help prevent liquid slugging at start-up and maintain the right mass flow through the evaporator.

In practice, a well-adjusted system keeps the compressor within its design envelope during the hottest days of summer, which is often where installations in Mediterranean climates are pushed to their limits.

Installation and Start-Up Best Practices

Even the most robust compressor can fail prematurely if basic installation guidelines are ignored.

• Cleanliness: Piping must be brazed with nitrogen purging and thoroughly evacuated to remove moisture and contaminants that can degrade oil and valves.
• Oil management: Proper piping design, especially at the suction line and oil traps on vertical risers, ensures oil returns reliably to the compressor shell.
• Electrical checks: Before energizing, technicians confirm supply voltage, phase sequence and proper overload protection, including verification of contactor and breaker sizing.

A disciplined start-up procedure—monitoring pressures, temperatures and compressor current over the first hour—usually reveals whether the system is healthy or if there are hidden issues like undersized condensers or incorrect charge.

Maintenance and Diagnostic Considerations

In daily practice, maintenance teams use a few key indicators to assess the health of a scroll compressor like the ZB38.

• Noise and vibration: Changes in sound signature can announce mechanical damage, liquid return or severe gas under-cooling at the compressor.
• Discharge line temperature: Excessive discharge temperature often points to high condensing pressure, low refrigerant charge or poor suction gas cooling.
• Oil color and level (if visible through an indicator): Darkened or acidic oil is a clear warning that the system has experienced overheating or contamination, and that deeper corrective action is required.

Regular cleaning of condensers, checking fan operation and verifying that defrost cycles are effective in evaporators can significantly extend compressor life by keeping operating conditions within design limits.

Where This Technology Is Heading

Although R404A has long been the standard for MBP commercial applications, environmental regulations are pushing the market toward lower-GWP alternatives and redesigned compressors.
Manufacturers are gradually adapting similar 5HP scroll platforms to new blends with different pressures and glide characteristics, while technicians increasingly need to be familiar with multiple refrigerants and their specific charge and oil requirements.
For users and contractors, this transition highlights the importance of good documentation, training and practical feedback from the field—an area where communities of technicians, independent platforms such as mbsmgroup.tn and projects like mbsm.pro, mbsmgroup and mbsmpro.com can play a useful role in sharing real-world experience and solutions.

Suggested exclusive images for this topic (you can create or photograph them yourself):

• A close-up of a 5HP scroll compressor label showing model code, refrigerant and electrical data.
• A medium-temperature cold room condensing unit with the compressor, condenser and control box visible on a rooftop or service balcony.
• A technician’s hand holding clamp meter and manifold gauges connected to a running MBP R404A condensing unit.
• A clean, well-lit cold room interior with product on shelves, showing air coolers on the ceiling and neat piping.
• A side-by-side photo of a scroll compressor and an older reciprocating unit on a workshop floor, demonstrating the difference in size and design.