Focus Keyphrase: ZMC EGM77AA1 and Daewoo HSL25YE-5 Compressor Comparison and Technical Specifications

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Meta Description: Explore the technical breakdown of the ZMC EGM77AA1 and Daewoo HSL25YE-5 compressors. Learn about cooling capacities, HP ratings, and the best R134a replacements for professional refrigeration repair.

Slug: zmc-egm77aa1-vs-daewoo-hsl25ye-5-compressor-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, EGM77AA1, HSL25YE-5, ZMC, Daewoo, R134a, 1/4 HP Compressor, Refrigerator Repair, GL90AA, EMT6170Z, GPY12AA, LBP Compressor, Compressor Replacement.

Excerpt: When a refrigerator stops cooling, the heart of the problem is often the compressor. Understanding the differences between the ZMC EGM77AA1 and the Daewoo HSL25YE-5 is vital for any technician. These R134a units are staples in the industry, offering reliable low back pressure performance for domestic and light commercial cooling systems worldwide.

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Technical Specification Comparison

Feature	ZMC EGM77AA1	Daewoo HSL25YE-5
Model	EGM77AA1	HSL25YE-5
Utilisation	LBP (Low Back Pressure)	LBP (Low Back Pressure)
Domaine	Freezing / Cooling	Freezing / Cooling
Cooling Wattage (-23.3°C)	~182 W	~195 W
Cubic Feet Capacity	14 – 18 cu.ft.	16 – 20 cu.ft.
Litres Capacity	400 – 500 L	450 – 550 L
Kcal/h	156 kcal/h	168 kcal/h
TON	0.052 TR	0.055 TR
Oil Type and Quantity	Ester (POE) / 180ml	Ester (POE) / 200ml
Horsepower (HP)	1/4 HP	1/4 HP+ (Powerful 1/4)
Refrigerant Type	R134a	R134a
Power Supply	220-240V / 50Hz	220-240V / 50Hz
Cooling Capacity BTU	621 BTU/h	665 BTU/h
Motor Type	RSIR / RSCR	RSIR
Displacement	7.69 cc	8.1 cc
Winding Material	Copper	Copper
Pression Charge	0.5 – 1.2 Bar (Suction)	0.6 – 1.2 Bar (Suction)
Capillary Recommendation	0.031″ / 3.0m	0.036″ / 3.0m
Refrigerator Type	No-Frost Double Door	Large Side-by-Side / Chest Freezer
Temperature Function	-35°C to -10°C	-35°C to -10°C
Fan Requirement	Static (No Fan needed)	Static or Fan cooled
Commercial Application	Light Commercial / Domestic	Light Commercial / Domestic
Amperage (Running)	1.1 A	1.3 A
LRA (Locked Rotor Amp)	9.0 A	8.4 A
Relay Type	PTC	PTC
Capacitor	Optional (4-5 µF)	Usually No
Origin	Egypt (ZMC)	Korea (Daewoo)

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Efficiency Metrics (COP) – Performance Data

Measured for R134a LBP Applications

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	115	118	0.97
-25	165	135	1.22
-23.3 (Standard)	182	142	1.28
-20	215	155	1.38
-15	285	175	1.63
-10	370	198	1.87
0	510	240	2.12
4	590	265	2.23
10	720	305	2.36

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Compressor Replacements (Cross-Reference)

5 Replacements in same Refrigerant (R134a):

1. Embraco: EMT6170Z (1/4 HP)
2. Secop/Danfoss: TL5G (1/4 HP)
3. Cubigel: GPY12AA (High Efficiency 1/4)
4. Huayi: HYE69YG
5. Jiaxipera: ND1114GZ

5 Replacements in Alternative Refrigerant (R600a):

(Note: Requires system flush and capillary adjustment)

1. Embraco: EMX70CLC
2. Secop: BD35K
3. ZMC: HTK80AA
4. Jiaxipera: N1113Y
5. Donper: L76CZ1

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Mastering Low Back Pressure Systems: A Deep Dive into the EGM77AA1 and HSL25YE-5

In the world of professional refrigeration, selecting the right motor for the job isn’t just about fitting a black box into a chassis; it’s about understanding the thermodynamics that keep food fresh and customers happy. Today, we are looking at two heavyweight contenders in the 1/4 HP segment: the ZMC EGM77AA1 and the Daewoo HSL25YE-5.

Engineering the Perfect Cool

The ZMC EGM77AA1 is a staple of Egyptian manufacturing under European licensing, known for its incredible resilience in high-ambient temperatures. It utilizes a 7.69cc displacement, making it ideal for standard 400-liter household refrigerators. Its counterpart, the Daewoo HSL25YE-5, comes from a lineage of Korean engineering that prioritizes torque. With an 8.1cc displacement, the Daewoo often feels “punchier,” recovering temperatures faster after the fridge door has been opened frequently.

Why Displacement Matters

While both are classified as 1/4 HP, the slight edge in displacement for the Daewoo unit (8.1cc vs 7.69cc) allows it to move a higher volume of R134a gas per stroke. This translates to a slightly higher BTU output. If you are replacing a compressor in a large “No-Frost” unit that includes a heavy ice-maker load, the Daewoo HSL25YE-5 is often the sturdier choice. However, the ZMC unit is legendary for its “quiet” run cycle, making it a favorite for indoor kitchen environments where decibel levels matter.

Professional Advice for Field Technicians

• The Vacuum is Key: When working with R134a and POE (Polyolester) oils, moisture is your greatest enemy. These oils are highly hygroscopic (they soak up water). Always ensure a vacuum of at least 500 microns before charging.
• Capillary Match: If you are swapping a ZMC for a Daewoo, verify the capillary tube. Since the Daewoo has a slightly higher displacement, a restrictive capillary can lead to high head pressure.
• Starting Components: Always replace the PTC relay and the overload protector when installing a new unit. Reusing old components on a new compressor is a recipe for a callback.

The Verdict

Both of these compressors represent the peak of R134a domestic technology. The ZMC EGM77AA1 is the “reliable workhorse” for standard configurations, while the Daewoo HSL25YE-5 is the “high-performance” variant for larger, more demanding cooling loads. By matching the displacement and the BTU requirements accurately, you ensure the longevity of the appliance and the satisfaction of the end-user.

Mbsmpro.com, Siberia Compressor, GFF93AA, 1/3+ hp, Motech, Cooling, R134a, 270 W, 1.4 A, 1Ph 160‑260V 50Hz, LBP, RSIR/RSCR, −35°C to −10°C, Freezing

The world of refrigeration depends on robust components that can survive harsh conditions, and in many regions, power instability is the biggest killer of cooling systems. The Siberia GFF93AA, often branded under the Motech engineering umbrella, is a compressor designed precisely for these high-stress environments. Known as the “Siberia Copper” series, it prides itself on having 100% copper windings—a massive advantage over the aluminum windings found in cheaper units that often succumb to internal heat and early insulation breakdown.

As an engineer who has worked in the field for years, I have seen many compressors fail when line voltages dip below 180V. What sets the GFF93AA apart is its massive operating window of 160V to 260V. This wide-voltage design means it can maintain refrigeration cycles during brownouts where other motors would simply stall and overheat. Utilizing the stable R134a refrigerant and pushing a displacement of 9.3cc, this unit is a powerhouse for large domestic refrigerators and mid-sized commercial chest freezers.

Complete Technical Specifications

Parameter	Data Detail
Model	GFF93AA
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine (Freezing/Cooling)	Heavy-duty Freezing & Deep Cold Storage
Cooling wattage at -23.3°C	270 Watts
Cubic feet capacity	18 to 22 Cubic Feet
Litres capacity	450 to 600 Litres
Kcal/h	232 Kcal/h
Oil Type and quantity	Ester / POE RL 10H (230 cc)
Horsepower (HP)	1/3+ HP
Refrigerant Type	R134a
Power Supply	1Ph / 160-260V / 50Hz
Cooling Capacity BTU	921 BTU/h
Motor Type	RSIR / RSCR
Displacement	9.3 cc
Winding Material	100% High-Grade Copper
Pression Charge	Low side 0.5 – 5 PSI / High side 150 PSI (operating)
Capillary Recommendation	0.036″ to 0.040″
Applicable Models	Double-door large fridges, commercial chest freezers
Temperature function	-35°C to -10°C
Fan Cooling Required	Recommended for ambient above 35°C, otherwise Static
Commercial Application	Yes (Light commercial / Household heavy duty)
Amperage (Working)	1.25 A to 1.54 A
LRA (Locked Rotor Amps)	14.0 A
Relay Type	PTC QP2-15
Capacitor Value	4 µF (450 V) optional for RSCR configuration
Origin & Exporting	Manufactured by Motech (China) – Exported globally via Agent Alfardi

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Efficiency Metrics (COP) & Load Performance

Efficiency isn’t just a number; it is how well a machine handles the physics of heat exchange. The GFF93AA shows high stability at standard boiling points for R134a.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-35	135	115	1.17
-30	174	142	1.22
-25	230	168	1.37
-23.3 (Rated LBP)	270	185	1.46
-20	310	205	1.51
-15	390	235	1.66
-10	519	265	1.96

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Comparison: Why Choose Siberia over Standard Alternatives?

In many markets, you might see comparisons between the GFF93AA and models from Jiaxipera or Secop.

1. Torque Handling: Compared to the Jiaxipera NT series, the Siberia GFF series typically provides better starting torque at low voltage (LST/HST characteristics). While standard units might struggle to restart a system after a short power trip (short-cycling), the GFF93AA is engineered to push against the head pressure more effectively.
2. Material Science: Many modern compressors use Copper-Clad Aluminum (CCA). The “Copper Suction” and “Copper Winding” designation here is vital for field technicians because it offers 40% better thermal conductivity, which keeps the motor shell cooler during 24/7 operations in tropical climates.

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Engineering Conseil, Notices, and Maintenance

From an field engineer’s desk:

• Vacuum Requirement: Since this unit uses POE (Polyolester) oil, it is incredibly thirsty for moisture. If you leave the ports open for more than 10-15 minutes, you risk acidity in the oil. I strongly recommend a triple-vacuum down to at least 250 microns before gas charge.
• Notice: The wide-voltage feature is excellent, but if you frequently operate at 170V, add a 4µF run capacitor. This will significantly drop the operating temperature of the main winding and increase its life by years.
• Benefits: Choosing the 9.3cc displacement model for a fridge designed for 7.5cc is an “upgrading” move. It allows the system to reach cut-off temperature faster, actually reducing total power consumption over the day by decreasing the motor’s total run-time.

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What size capacitor is recommended for the Siberia GFF93AA?

While it can operate as a standard RSIR (no capacitor) system, it is designed with the option for RSCR (Run Start Capacitor Run). A 4µF 450V capacitor is the ideal specification. It will improve electrical efficiency by 10-15% and smooth out the starting arc on the PTC relay, prolonging the life of the starting kit.

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Compressor Replacements and Equivalents

5 Direct Replacements (R134a – Same Characteristics):

1. Secop/Danfoss: FR11G or GL90AA
2. Embraco: FFI 12 HBK or FFU 130 HAK
3. Tecumseh: TPH1410Y
4. Huayi: GQR90AA
5. ZMC: GL90AA

5 Cross-Refrigerant Alternatives (Requires Full Flush/Purge):

1. Donper (R600a): LU140CY
2. Embraco (R290): NEK2134U (Note: Higher starting torque)
3. Wanbao (R600a): DQH140Y
4. LG (R600a): CMA121H
5. Jiaxipera (R600a): NT1114Y

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Focus keyphrase: Siberia GFF93AA Compressor 1/3+ hp R134a 270W Technical Specifications and Professional Replacements Review

SEO title: Mbsmpro.com | Siberia GFF93AA Compressor | 1/3+ hp | R134a | 9.3cc

Meta description: Professional guide for the Siberia GFF93AA 1/3+ HP Compressor. Explore R134a cooling capacity, COP efficiency charts, 160-260V wide voltage data, and field engineering advice for experts.

Slug: siberia-gff93aa-compressor-1-3hp-r134a-specifications

Add Tags: Siberia, GFF93AA, Alfardi, Motech, R134a, 1/3+ HP, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GL90AA, FFI12HBK, TPH1410Y, GQR90AA, Compressor replacement, Refrigeration engineering.

Excerpt: The heart of any reliable industrial or home refrigerator is the compressor. The Siberia GFF93AA stands out as a high-displacement 1/3+ HP unit featuring genuine copper windings and a massive wide-voltage tolerance from 160V to 260V. For technicians working in harsh power zones, this R134a unit provides 270W of efficient, stable cooling power…

This is a full transcription of the Motech GFF93AA Data Sheet.

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MOTECH GFF93AA Data Sheet

Refrigeration parts and equipment

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1. BASIC DATA

1.1 OPERATION

• Application: LBP (Low Back Pressure)
• Refrigerant: R134a
• Expansion device: Capillary tube
• Cooling: Static
• Evaporating Temperature Range: -35 to -10°C (-34 to +14 °F)
• Max Ambient Temperature: 43°C (110°F)
• Max Operating Discharge Temperature (1): 120°C (248°F)
• Max Peak Discharge Temperature (1, 2): 135°C (275°F)
• Max Operating Condensing Temperature: 60°C (140°F)
• Max Peak Condensing Temperature (2): 70°C (158°F)
• Max Winding Temperature: 130°C (266°F)
• Max Impurities: 30 mg
• Max Water Content: 100 mg

1.2 COMPRESSOR

• Displacement: 9.3 cc
• Cylinder Bore: 24.4 mm
• Stroke: 19.8 mm
• Net Weight (3): –
• Shell size: High
• Oil charge: 230 cc
• Oil Type: ICI RL 10H
• Oil viscosity (4): 10 cSt
• Suction system: Semi-direct

1.3 MOTOR

• Power supply: 220-240 V
• Voltage limits: 187 – 264 V
• Frequency: 50 Hz
• Phase: 1
• Motor Type: RSIR / RSCR
• Electrical Insulation Class: B
• Locked Rotor Current at 220 V (Max value with RC): 14.2A
• Locked Rotor Current at 220 V (After 4 s with RC): 7.8A
• Locked Rotor Current at 220 V (Max value without RC): 14.0A
• Locked Rotor Current at 220 V (After 4 s without RC): 8.0A
• Main Winding Resistance at 20°C (68°F): 9.13 Ω
• Start Winding Resistance at 20°C (68°F): 14.5 Ω

(1) Measured at 5 cm from the shell with insulated thermocouples | (2) For transient conditions during “Pull Down” | (3) With oil and without external electricals | (4) Measured at 40°C (104°F)

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1.4 ELECTRICALS

Motor-protector

Feature	WANBAO	SENSATA
Type	BT110-120A61D2	4TM 308 NFBYY-53
Open Temperature	115-125 °C	115-125 °C
Close Temperature	70-52 °C	70-52 °C
U.T.C. at 70°C	2.36 A	2.34 A (AT 70°C)
Time Check Current	11 A (7.5-14 sec)	11 A (5-15 sec)

PTC starting device

Feature	WANBAO	TIANYIN
Assembly type	QP2-15	QP2-15E
PTC Pill	QP2-15	QP2-15E
Resistance at 25°C	11-19Ω	11-19Ω
V max	350 V	350 V
I max	8A	8A
Curie Temp	120°C	120°C
Dimensions	20mm (dia), 3.3mm (thk)	16mm (dia), 2.5mm (thk)

Run capacitor (optional)

• Type: Plastic case
• Capacity: 4μF
• Vmax: 450 V
• Working hours: 10,000 h at 450 V

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2. CALORIMETER DATA

Test conditions according to ASHRAE:

• Condensing temp: +55°C
• Subcooling temp: +32°C
• Superheating temp: +32°C
• Suction temp: +32°C
• Supply Voltage: 220 V / 50 Hz

2.1 CALORIMETER TEST	-30°C (Without RC)	-23.3°C (Without RC)	-10°C (Without RC)	-30°C (With RC)	-23.3°C (With RC)	-10°C (With RC)
Cooling capacity (W)	174	270	519	170	270	524
Input power (W)	142	185	265	137	174	252
COP (W)/W	1.22	1.46	1.96	1.25	1.55	2.08
Current (A)	1.09	1.25	1.52	0.81	0.95	2.08

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3. OTHER PERFORMANCES

• 3.1 Starting Test: Min. Starting Voltage (at 90°C / 5 Bar A) = 165V.
• 3.2 Calorimeter Test (GB9098): A-weighted SPL: 42 dBA | Vibration Index TVI: 0.65 mm/s.
• 3.3 Life Test: 500h Wear, 2000h High Temp, 200K On/Off Cycles (All Passed).
• 3.4 Transport Test: Not required.
• 3.5 Oil Transport Test: Not required.
• 3.6 Impact Test: Not required.

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4. COMPARISON CHART & DIMENSIONS

Brand Cross-Reference

MOTECH	POWER	EMBRACO	TECUMSEH
GFF93AA	1/3+ HP	FFI 12 HBK	TPH1410Y
GFF86AA	1/3 HP	EGAS 100 HLR	TPH1410Y
GFF75AA	1/4+ HP	EGAS 80 HLR	TSB1390Y
GFF66AA	1/4 HP	EGAS 80 HLR	TSB1380Y
GFF57AA	1/5 HP	EGAS 70 HLR	TSB1355Y / TSB1374Y
GFF44AA	1/6 HP	EMI 60 HER	THG1346Y / THG1352Y
GVM35AA	1/8 HP	EMI 80 HLR	THG1335Y
GVM30AA	1/10 HP	EM 30 HNR	THG1330Y

Dimensional Data (R134a)

Model	A ± 2.5	B ± 2.5	C ± 2.5	D ± 2.5
GFF57AA / 66AA / 75AA / 86AA	98.5	100.5	113.5	174
GFF93AA	108.5	110.5	123.5	184
BFF12AA	108.5	110.5	123.5	184
BFM93AA	98.5	100.5	113.5	174

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5. TECHNICAL DRAWING LABELS

• Air suction pipe: Φ 6.1 + 0.1 (No paint allowed in length 12mm)
• Exhaust pipe: Φ 5 – 0.1 (No paint allowed in length 12mm)
• Process pipe: Φ 6.1 + 0.1 (No paint allowed in length 12mm)
• Rating Label: Located on the side of the compressor shell.
• Serial Number: Located near the base mounting feet.

Based on the technical specifications of both compressors, it is not recommended to replace the burnt-out compressor (Jiaxipera N1113Y) with the second one (ACC HTK70AA).

Here is the technical comparison:

1. The Original Compressor (Jiaxipera N1113Y)

• Displacement: 8.9 cm³
• Cooling Capacity: Approximately 154 Watts
• Horsepower Equivalent: Roughly 1/6 HP
• Gas Type: R600a

2. The Replacement Compressor (ACC HTK70AA)

• Displacement: 6.64 cm³
• Cooling Capacity: Approximately 117 Watts
• Horsepower Equivalent: Roughly 1/8 HP
• Gas Type: R600a

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Why this is a bad match:

While both compressors use the same refrigerant (R600a) and voltage (220-240V), the ACC HTK70AA is significantly weaker than the original Jiaxipera.

If you install it, the following problems will occur:

1. Poor Cooling: The fridge will take a very long time to get cold, and it may never reach the desired temperature, especially in hot weather.
2. Continuous Running: Because the compressor is undersized, it will stay “on” almost all the time to try to cool the unit.
3. Short Lifespan: Working continuously will cause the replacement compressor to overheat, leading to a very short life before it burns out as well.

Conclusion:

You should look for a replacement compressor that has a cooling capacity of around 150–160 Watts or a displacement of 8.9 cm³ (equivalent to 1/6 HP). Using the 1/8 HP compressor (the ACC model) will likely result in a failed repair.

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Focus Keyphrase: Technical analysis of Jiaxipera N1113Y and ACC HTK70AA compressor replacement compatibility

SEO Title: Mbsmpro.com, Compressor, Jiaxipera N1113Y, ACC HTK70AA, 1/6 hp, 1/8 hp, R600a, 220-240V, Cooling, LBP

Meta Description: Detailed technical review of the Jiaxipera N1113Y and ACC HTK70AA compressors. Learn why cooling capacity and displacement matter more than just the refrigerant type when performing a replacement.

Slug: jiaxipera-n1113y-vs-acc-htk70aa-compressor-technical-specifications

Tags: Jiaxipera N1113Y, ACC HTK70AA, R600a, Compressor, 1/6 hp, 1/8 hp, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GL90AA, HTK80AA, GVY66AA, EMT43HDP, NLE11KK, QP91Y, Wanbao ETB80Y, Embraco EMT43HDP, Secop NLE11KK

Excerpt: Selecting the right compressor for a refrigeration system is critical for long-term performance and energy efficiency. When replacing a Jiaxipera N1113Y, simply matching the refrigerant type is not enough. This guide breaks down the technical differences between the N1113Y and the ACC HTK70AA, providing the essential data for professional technicians and refrigeration engineers.

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Technical Article: The Engineering Reality of Compressor Sizing

In the field of refrigeration, a compressor is the heart of the system. For an expert technician, replacing a unit isn’t just about finding a motor that fits the mounting bracket; it is a calculation of thermal dynamics. A common question arises when a Jiaxipera N1113Y fails: Can an ACC HTK70AA serve as a reliable substitute?

The short answer is no. To understand why, we must look at the displacement and the cooling capacity (Watts). The Jiaxipera N1113Y is a powerhouse in its class, designed for medium-to-large domestic refrigerators. It features a displacement of 8.9 cm³ and delivers approximately 154 Watts of cooling at Low Back Pressure (LBP) conditions.

In contrast, the ACC HTK70AA is a smaller unit. With a displacement of only 6.64 cm³, it produces around 117 Watts. When an undersized compressor like the HTK70AA is installed in a system designed for a 154W load, the compressor will run continuously, overheat, and eventually experience mechanical failure or winding burnout.

Comparative Analysis Table

Feature	Jiaxipera N1113Y	ACC HTK70AA	Impact of Difference
Displacement	8.9 cm³	6.64 cm³	Lower volume per stroke
Cooling Capacity	154 W (~1/6 HP)	117 W (~1/8 HP)	24% loss in cooling power
Current (LRA)	~7.5 A	~6.1 A	Different torque characteristics
Efficiency (COP)	High Efficiency	Standard Efficiency	Increased energy consumption

Why “Close Enough” Isn’t Good Enough

When you install a 1/8 HP compressor where a 1/6 HP unit is required, the internal pressures of the refrigeration cycle change. The suction pressure will remain higher than intended because the smaller piston cannot evacuate the evaporator quickly enough. This leads to poor frost patterns and higher cabinet temperatures, especially during high ambient summer conditions.

Technical Specifications Table (Jiaxipera N1113Y)

Model	Jiaxipera N1113Y
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine (Freezing/Cooling)	Freezing and Deep Cooling
Oil Type and quantity	Mineral/PAG (check label) 180ml
Horsepower (HP)	1/6 HP
Refrigerant Type	R600a (Isobutane)
Power Supply	220-240V ~ 50Hz
Cooling Capacity BTU	~525 BTU/h
Motor Type	RSIR / RSCR
Displacement	8.9 cm³
Winding Material	Copper/Aluminum Alloy (Model Dependent)
Pression Charge	Low Pressure Side
Capillary	0.026 to 0.031 inch (standard)
Refrigerator Type	No-Frost / Double Door 300L-400L
Temperature Function	-35°C to -15°C
With fan or no	Usually Static (No fan required)
Commercial or no	Domestic / Light Commercial
Amperage in function	0.7 A – 0.9 A
LRA (Locked Rotor Amps)	7.5 A
Type of relay	PTC Relay
Capacitor	4µF to 5µF (Optional for RSCR)

Replacement Options for Jiaxipera N1113Y

5 Recommended Replacements (Same Gas: R600a)

1. ACC HTK80AA: A closer match with 8.1 cm³ displacement.
2. Secop NLE11KK: High-efficiency replacement for 1/6 HP+ applications.
3. Embraco EMT43HDP: Robust performance for R600a systems.
4. Wanbao ETB80Y: Reliable Asian-market equivalent.
5. Jiaxipera N1112Y: Slightly lower power but within tolerance levels.

5 Recommended Replacements (Other Gas: R134a – Requires System Flush)

1. ZMC GL90AA: The industry standard for 1/6 HP R134a.
2. Embraco GVY66AA: High-performance LBP unit.
3. Donper QP91Y: Reliable 1/6 HP displacement equivalent.
4. Tecumseh AEZ1380Y: High-torque domestic compressor.
5. Secop TLES7.5KK.3: Equivalent displacement for R134a conversion.

Professional Engineering Advice

1. Cleanliness is Key: When a compressor burns out, it releases acid into the oil. Always replace the filter drier and perform a nitrogen flush.
2. Match the Displacement: Never go more than 10% lower in cm³ displacement.
3. Vacuuming: R600a systems are extremely sensitive to moisture. A deep vacuum (below 500 microns) is mandatory.
4. Safety First: R600a is flammable. Ensure no open flames or sparks are present during the charging process.

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Question: If I have a 350-liter fridge, will the ACC HTK70AA work?
Answer: No. A 350-liter refrigerator typically requires the 154W capacity of the Jiaxipera N1113Y (1/6 HP). The ACC HTK70AA (1/8 HP) is designed for smaller units (around 150-220 liters). Using it will lead to continuous running and premature failure.

Focus keyphrase: GMCC PE75H1C Compressor 1/4 HP R134a LBP Technical Specifications Wiring Diagram and Replacement Cross-Reference Guide

SEO title: Mbsmpro.com, Compressor, GMCC, PE75H1C, 1/4 hp, R134a, 185 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, freezing

Meta description: Professional technical analysis of the GMCC PE75H1C compressor. High-efficiency 1/4 HP LBP unit for R134a refrigeration. View wiring schemas, performance tables, and compatible replacements.

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GMCC, PE75H1C, R134a, 1/4 HP, LBP, Refrigerator Compressor, HVAC, GL90AA, EMT6170Z, FFI7.5HAK, NL7F, NTU170MT, HMK12AA, HTK12AA, HYB12MHU, NT1114Y

Excerpt: The GMCC PE75H1C is a robust hermetic reciprocating compressor engineered for low back pressure applications using R134a refrigerant. Operating at 220-240V 50Hz, this 1/4 HP motor provides a cooling capacity of approximately 185W. This article provides technical datasheets, electrical wiring schemas, and professional cross-reference guides for global refrigeration maintenance and engineering.

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Engineering Excellence: The GMCC PE75H1C Hermetic Compressor for R134a Systems

In the world of thermal management and domestic refrigeration, the GMCC PE75H1C stands as a benchmark for reliability and volumetric efficiency. Manufactured by Anhui Meizhi Compressor Co., Ltd (a Midea Group venture), this unit is a staple in high-performance household refrigerators and chest freezers. As an engineer who has worked extensively on the field, I can attest that the “PE” series represents a balance between compact mechanical design and thermal endurance.

This compressor is designed for Low Back Pressure (LBP) cycles, making it ideal for freezing applications where evaporation temperatures drop significantly below zero. Utilizing R134a, it remains a common choice for technicians servicing existing infrastructure where synthetic oils are standard.

Detailed Technical Specifications

Feature	Specification
Model	PE75H1C
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine (Freezing/Cooling)	Freezing / Deep Cold
Oil Type and quantity	POE (Ester Oil) – Approx. 180 ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220-240V ~ 50Hz / 1 Phase
Cooling Capacity BTU	631 BTU/h (approx. 185W)
Motor Type	RSIR (Resistive Start – Inductive Run)
Displacement	7.5 cm³
Winding Material	High-Grade Copper
Pression Charge	0.8 to 1.3 Bar (Low side)
Capillary	0.031″ or 0.8mm ID
Refrigerator Models	Midea, Toshiba, Samsung, various local brands
Temperature function	-35°C to -10°C
With fan or no	Static Cooling (No fan required)
Commercial or no	Domestic / Light Commercial
Amperage in function	0.9 A to 1.2 A
LRA (Locked Rotor Amps)	11.0 A
Type of relay	PTC Starter
Capacitor or no	No (Standard RSIR)

Electrical Wiring Schema (RSIR Logic)

For field technicians, identifying the terminal pins is critical to prevent accidental motor burnout. The GMCC PE75H1C follows the standard triangular layout:

1. C (Common): The apex pin. Connected to the line voltage through the internal Thermal Overload Protector.
2. M (Main/Run): Bottom-right pin. Connected to the Neutral line.
3. S (Start): Bottom-left pin. Connected via the PTC (Positive Temperature Coefficient) relay.

Operational Logic: Upon startup, the PTC relay allows current to flow to the Start winding. As the PTC heats up, its resistance increases dramatically, effectively cutting off the Start winding once the motor reaches sufficient RPM, leaving only the Main winding energized.

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Performance Comparison: GMCC PE75H1C vs. Industry Standards

When comparing the PE75H1C to other compressors in the same class, we look at the Coefficient of Performance (COP) and displacement efficiency.

Metric	GMCC PE75H1C (R134a)	Equivalent R600a Model
Gas Displacement	7.5 cm³	11.2 cm³
Efficiency (W/W)	1.25	1.45
Charge Weight	Standard (120g – 150g)	Low (40g – 60g)
Pressure Delta	Moderate	Low

Professional Replacement Cross-Reference

Choosing the right replacement is vital for maintaining the refrigerator’s original thermal balance.

5 Compressor replacements in same value (R134a):

1. Zem/ACC: GL90AA
2. Embraco: EMT6170Z or FFI 7.5HAK
3. Secop (Danfoss): NL7F
4. Huayi: AE1380Y
5. Tecumseh: THB1375YSS

5 Compressor replacements in same value (R600a Conversion):
Notice: Conversion requires a full system flush and capillary adjustment.

1. TEE: NTU170MT
2. Cubigel: HMK12AA
3. Secop: HTK12AA
4. Huayi: HYB12MHU
5. Jiaxipera: NT1114Y

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Engineering Advice and Best Practices

• Thermal Protection: The “Thermally Protected” label indicates an internal bimetallic switch. If the compressor stops and feels extremely hot, do not force a restart. Let it cool for 30 minutes. Check the condenser coils for dust; poor airflow is the primary killer of the PE75H1C.
• Oil Compatibility: This unit uses POE (Polyolester) oil. Never mix mineral oil (MO) with this system. If you are retrofitting, ensure the system is flushed with nitrogen to remove moisture, as POE oil is highly hygroscopic.
• Vacuum Standards: For R134a systems, reaching a vacuum of at least 500 microns is non-negotiable. Residual moisture reacts with R134a and POE oil to create acid, which will eventually dissolve the copper windings.
• Startup Amperage: If the compressor draws high amperage (above 5A) and trips the protector, first replace the PTC relay. These components degrade over time and are a common point of failure before the motor itself fails.

Benefits of the GMCC PE75H1C

The primary benefit of this model is its durability in tropical climates. The motor is wound with high-quality copper that resists heat better than aluminum alternatives. Its compact footprint also makes it versatile for a wide range of refrigerator brands, simplifying inventory for HVAC professionals.

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Excerpt: The TEE NTU 170 MT is a high-efficiency hermetic reciprocating compressor designed for low back pressure applications using R600a refrigerant. Known for its reliability in household refrigeration, this unit operates at 220-240V 50Hz. This article explores its technical specs, cooling capacity, and suitable replacements for HVAC technicians and engineers worldwide.

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The Engineering Excellence of the TEE NTU 170 MT: A Deep Dive into R600a Refrigeration

In the evolving world of domestic refrigeration, efficiency and environmental impact are the primary drivers of innovation. The TEE NTU 170 MT, manufactured by Turk Elektrik, stands as a testament to these principles. As a Low Back Pressure (LBP) compressor optimized for R600a (isobutane), this model has become a staple in modern household refrigerators and freezers across Europe and the Middle East.

Understanding the NTU 170 MT Architecture

The NTU 170 MT is engineered to handle the unique thermodynamic properties of R600a. Unlike older R134a systems, R600a operates at lower pressures but requires a larger displacement to achieve comparable cooling capacities. This compressor utilizes a robust motor designed for RSIR (Resistive Start – Inductive Run) operation, ensuring a reliable start even under varying voltage conditions typically found in domestic environments.

The “MT” series is specifically calibrated for high-performance cooling while maintaining a low noise floor. With a Locked Rotor Amperage (LRA) of 14A, it demonstrates significant starting torque, which is essential for overcoming the initial pressures of the refrigeration cycle after a defrost period.

Technical Specification Table

Feature	Specification
Model	NTU 170 MT
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Oil Type and Quantity	Mineral Oil (approx. 180 ml)
Horsepower (HP)	1/4 HP
Refrigerant Type	R600a (Isobutane)
Power Supply	220-240VAC / 50Hz / 1Ph
Cooling Capacity BTU	~700 BTU/h (at -23.3°C Evaporating Temp)
Motor Type	RSIR
Displacement	11.20 cc
Winding Material	High-Grade Copper
Pression Charge	0.5 to 1.2 Bar (Low side depending on load)
Capillary Recommendation	0.031″ ID x 3 meters (approximate)
Temperature Function	-35°C to -10°C
Cooling System	Static (No fan required for compressor)
Commercial Class	Domestic / Light Commercial
Amperage (FLA)	0.8 A – 1.0 A
LRA (Locked Rotor)	14 A
Relay Type	PTC Starter
Capacitor	Not required (RSIR), Optional Run Cap for CSIR conversion

Electrical Wiring Schema (RSIR Configuration)

For field technicians, understanding the terminal configuration is vital. The TEE NTU 170 MT follows the standard triangular pin layout:

1. Common (C): Top pin (typically connected to the overload protector).
2. Start (S): Right pin (connected to the PTC relay for starting).
3. Main/Run (M): Left pin (connected to the neutral line).

Schema Logic:
[Line] -> [Overload Protector] -> [Common Pin]
[Neutral] -> [PTC Relay] -> [Main Pin] & [Start Pin (Momentary)]

Performance Comparison: R600a vs. R134a Equivalents

When comparing the NTU 170 MT to R134a units of similar horsepower, several differences emerge. The R600a model offers a superior Coefficient of Performance (COP).

Metric	TEE NTU 170 MT (R600a)	Equivalent R134a Model (e.g., GL90AA)
Efficiency (COP)	1.45 – 1.55 W/W	1.20 – 1.35 W/W
Operating Pressure	Low / Vacuum	High
Eco-Impact	GWP 3 (Low)	GWP 1430 (High)
Noise Level	Very Low	Moderate

Compatibility and Replacement Guide

Finding a direct replacement requires matching the displacement and the LBP characteristic. Below are the recommended alternatives for the NTU 170 MT.

Top 5 Replacements (R600a – Same Gas):

1. Embraco: EMT2121U
2. Secop (Danfoss): HTK12AA
3. ACC / Cubigel: HMK12AA
4. Jiaxipera: NT1114Y
5. Huayi: HYB12MHU

Top 5 Replacements (R134a – Conversion Required):
Note: Converting from R600a to R134a requires a full system flush, capillary adjustment, and oil compatibility check.

1. Zem: GL90AA
2. Embraco: FFI 7.5HAK
3. Secop: TLES7.5KK.3
4. Tecumseh: THB1375YSS
5. Carlyle: S26SC

Engineering Notices and Maintenance Tips

• Vacuuming Procedure: Due to the hygroscopic nature of the systems and the low pressures of R600a, a deep vacuum (minimum 200 microns) is mandatory. R600a systems are highly sensitive to non-condensables.
• Charging Safety: R600a is flammable. Always ensure the work area is well-ventilated. Use a dedicated electronic scale, as the charge weight is significantly lower than R134a (often only 40-60 grams).
• Filter Drier: Always replace the filter drier with one specifically labeled for R600a (XH-9 or equivalent) during any compressor swap.
• Capillary Blockage: Because R600a operates at lower discharge temperatures, carbonization is rare, but moisture-related ice blockages are common if the system is not perfectly dry.

Benefits for the End-User

Using a TEE NTU 170 MT ensures the refrigerator operates with minimal energy consumption. For the homeowner, this translates to lower electricity bills and a quieter kitchen environment. For the technician, the wide availability of parts for the TEE/Arçelik ecosystem makes it a preferred choice for long-term maintenance.