Secop GTK70AT Compressor Specifications and Equivalents

Secop GTK70AT Compressor Specifications and Equivalents mbsmpro

Mbsm.pro, Compressor, SECOP, GTK70AT, 1/5+ HP, R134a, 220-240V 50Hz, LBP, Refrigerator, Freezer

The SECOP GTK70AT is a cornerstone in the world of high-efficiency domestic refrigeration. Engineered in Slovakia, this compressor represents the evolution of the Kappa series, offering a robust solution for Low Back Pressure (LBP) applications. It is specifically designed to handle the demanding pull-down requirements of modern energy-efficient refrigerators and medium-sized chest freezers using R134a refrigerant.

Technicians value the GTK70AT for its high reliability and relatively low noise profile. Unlike standard 1/5 HP units, this “Plus” model provides a slight edge in displacement, ensuring that during high-ambient temperature conditions, the cooling curve remains stable without stressing the motor windings.


Technical Data Sheet

Feature Specification
Model GTK70AT
Utilisation LBP (Low Back Pressure)
Domaine Freezing / Cooling
Cooling Wattage (-23.3°C) 195 W
Cubic Feet Capacity 10 – 14 cu.ft
Litres Capacity 280 – 400 Liters
Kcal/h 168 Kcal/h
Oil Type and Quantity POE (Polyolester) / 180 ml
Horsepower (HP) 1/5+ HP
Refrigerant Type R134a
Power Supply 200-240V ~ 50Hz
Cooling Capacity BTU 665 BTU/h
Motor Type RSIR/RSCR (depending on starter kit)
Displacement 6.64 cm³
Winding Material Copper
Pression Charge Low side (0.5 to 1.5 psi running)
Capillary Recommendation 0.031″ or 0.036″ (Length varies by design)
Application Range Double door fridges, Upright freezers
Temperature Range -35°C to -10°C
Cooling Type Static (No fan required for compressor)
Commercial Use Light Commercial / Domestic
Amperage (RLA) 0.9 A to 1.1 A
LRA (Locked Rotor Amps) 6.1 A
Starter Type PTC Relay
Capacitor 4µF Run Capacitor (Optional for RSCR)
Origin Slovakia

Efficiency Metrics (COP) – Performance Data

Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
-30 140 115 1.22
-25 182 131 1.39
-23.3 195 138 1.41
-20 235 150 1.57
-15 302 171 1.77
-10 385 195 1.97

Comparison: GTK70AT vs. Standard Series

When comparing the GTK70AT to the older TLES or GL series, the GTK series offers a more compact shell design which aids in reducing vibration resonance. While a standard 1/5 HP compressor like the GL70AA uses about 6.0cm³ displacement, the GTK70AT’s 6.64cm³ displacement allows it to reach target temperatures 15% faster, making it ideal for “Tropical Class” appliances.

Professional Advice & Maintenance Tips

  • Oil Sensitivity: Always use POE oil if a recharge is necessary. Never mix with mineral oil, as R134a systems will undergo wax plating and clog the capillary.
  • Filter Drier: Always replace the filter drier when swapping a compressor. A 20g XH-9 molecular sieve is recommended for this model.
  • Vacuuming: Ensure a vacuum of at least 500 microns to remove all moisture, as the GTK series is sensitive to internal acid formation if moisture remains.

Compressor Cross-Reference & Replacements

5 Replacements (Same Refrigerant – R134a)

  1. Embraco: EMY70HLC / EMT6170Z
  2. Danfoss: TLS7F
  3. Tecumseh: THG1365YS
  4. Huayi: HYE69YL
  5. ZMC: GL70AA / GVY66AA

5 Replacements (Different Refrigerant – R600a/R290)

  1. Secop: NLE7.0KK.4 (R600a)
  2. Embraco: EMX70CLC (R600a)
  3. Jiaxipera: NT1114Y (R600a)
  4. Secop: DLE7.5CN (R290 – High efficiency)
  5. Tecumseh: TLY7.5KK.3 (R600a)

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Meta Description: Detailed technical analysis of the SECOP GTK70AT compressor. Includes cooling capacity, COP efficiency tables, HP ratings, and direct replacement guides for R134a refrigeration systems.

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GTK70AT, Secop, R134a, 1/5 HP, Refrigeration, Compressor Replacement, EMY70HLC, TLS7F, THG1365YS, GL70AA, HVAC Slovakia.

Excerpt: The SECOP GTK70AT is a high-performance 1/5+ HP compressor designed for R134a Low Back Pressure (LBP) applications. Featuring a 6.64 cm³ displacement and 195W cooling capacity at -23.3°C, this Slovakian-made unit is a reliable choice for domestic freezers and refrigerators. This guide provides full technical specs, COP metrics, and professional replacement equivalents.


Secop GTK70AT Compressor Specifications and Equivalents mbsmpro
1/5 hp, Compressor Replacement, EMY70HLC, GL70AA, GTK70AT, mbsm, mbsm.pro, mbsmgroup, mbsmpro.com, R134a, refrigeration, Secop, THG1365YS, TLS7F



Comptek QD65H Compressor 1/6 HP R134a L/MBP Technical Specifications and Replacement Guide

Comptek QD65H Compressor 1/6 HP R134a L/MBP Technical Specifications and Replacement Guide mbsmpro

Yes, your conclusion regarding the compressor ports is correct based on the standard design for this category:

Pipe 1 (single top pipe): This is the discharge line, usually the thinner pipe.

Pipe 2 (opposite the discharge): This is the suction line, which has a slightly larger diameter.

Pipe 3 (next to the suction): This is the process/service line, used for charging the gas.


    Mbsmpro.com, Compressor, QD65H, 1/6 hp, Comptek, Cooling, R134a, 160 W, 1.2 A, 1Ph 220-240V 50Hz, L/MBP, RSIR, -35°C to -5°C, Cooling and Freezing

    The refrigeration industry relies heavily on the “heart” of the system: the compressor. Among the most versatile and durable options available for domestic and light commercial applications is the Comptek QD65H. This piston-driven reciprocating compressor is engineered for reliability, specifically designed to handle the thermal demands of Low and Medium Back Pressure (L/MBP) environments.

    Technical Specifications and Performance Data

    The QD65H operates on the R134a refrigerant, a global standard for domestic cooling due to its thermodynamic efficiency and safety profile. Below is the comprehensive technical breakdown:

    Feature Specification
    Model QD65H (HM Series)
    Horsepower (HP) 1/6 HP
    Displacement 6.5 $cm^3$
    Cooling Capacity (BTU/h) 546 BTU/h
    Cooling Wattage (-23.3°C) 160 W
    Motor Type RSIR (Resistive Start – Induction Run)
    Winding Material High-grade Copper
    Refrigerant Type R134a
    Power Supply 220-240V / 50Hz (1 Phase)
    Oil Type and Quantity POE/Mineral (approx. 180ml – 200ml)
    Current (Running) 1.1 A – 1.2 A
    LRA (Locked Rotor Amps) 6.5 A
    Cooling Method Static (Natural cooling, no fan required for compressor)

    Efficiency Metrics (COP) and Performance Curve

    Understanding the Coefficient of Performance (COP) is vital for energy management. The QD65H shows excellent stability across a wide range of evaporating temperatures.

    Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
    -30 110 102 1.07
    -25 142 118 1.20
    -23.3 (Standard) 160 125 1.28
    -20 185 134 1.38
    -15 230 148 1.55
    -10 285 162 1.76
    0 410 190 2.15

    Application and Capability

    This compressor is the “workhorse” for medium-sized household appliances. It is ideally suited for:

    • Capacity in Liters: Efficiently cools units between 180 to 250 Liters.
    • Capacity in Cubic Feet: Approximately 6.3 to 8.8 $ft^3$.
    • Appliance Types: Single-door refrigerators, small chest freezers, and water dispensers.

    Comparison: QD65H vs. Similar Models

    Model HP Rating Displacement Refrigerant Application
    Comptek QD65H 1/6 HP 6.5 $cm^3$ R134a L/MBP (Versatile)
    ZMC GM70AZ 1/5 HP 7.0 $cm^3$ R134a LBP (Stronger Cooling)
    Danfoss TLS6F 1/6 HP 5.7 $cm^3$ R134a LBP (High Efficiency)

    Professional Recommendations and Installation Notes

    1. Capillary Tube Selection: For R134a systems using the QD65H, a capillary tube of 0.031 inches (0.8mm) with a length of 3 meters is standard for LBP freezing applications.
    2. Vacuum Procedure: Always ensure a vacuum level of at least 500 microns to prevent moisture from reacting with the R134a oil.
    3. Thermal Protection: The QD65H features an internal or external protector. Ensure the relay (PTC type) is seated correctly to prevent winding burnout.
    4. Start Capacitor: While being an RSIR motor, in areas with unstable voltage, adding a 47-64µF start capacitor can assist in high-torque starts (HST).

    Replacement Guide (Equivalents)

    Same Refrigerant (R134a):

    1. Embraco: EMS 55HLC
    2. Danfoss/Secop: TLES6.5FT.3
    3. Huayi: HYE69MT
    4. Zanussi: GVY66AA
    5. Tecumseh: THB1355Y

    Alternative Refrigerant (R600a/R12/Other):

    Note: Requires system flush and oil check.

    1. QD65Y (R600a version)
    2. Embraco: EMX55CLC (R600a)
    3. Danfoss: TLES7.5KK.3 (R600a)
    4. GL60AA (R134a alternative)
    5. Zel: GQD65Y

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    Excerpt: The Comptek QD65H is a high-performance 1/6 HP reciprocating compressor designed for R134a systems. Ideal for refrigerators between 180 and 250 liters, it offers a cooling capacity of 160W at -23.3°C. This professional guide covers its electrical characteristics, COP efficiency metrics, and provides a comprehensive list of equivalent models for seamless field replacement.

    Comptek QD65H Compressor 1/6 HP R134a L/MBP Technical Specifications and Replacement Guide mbsmpro
    1/6 HP Compressor, Comptek, EMS 55HLC, GVY66AA, HYE69MT, mbsm, mbsm.pro, mbsmgroup, mbsmpro.com, QD65H, R134a compressor, Refrigeration Repair, THB1355Y, TLES6.5FT.3



    Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison

    Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison mbsmpro

    Mbsmpro.com, Compressor, JX58LHS5-K vs FFI7.5HAK, Comparison, 1/5 hp and 1/5+ hp, R134a, LBP

    Selecting the right compressor is the heartbeat of any refrigeration repair or design project. Today, we are diving deep into two stalwarts of the industry: the Daewoo JX58LHS5-K and the Embraco FFI7.5HAK. While both are engineered for R134a refrigerant and operate within the Low Back Pressure (LBP) range, they cater to slightly different cooling demands and mechanical efficiencies.

    The Daewoo JX58LHS5-K is a classic choice for domestic refrigerators, known for its “Tropicalized” rating, meaning it holds its own even when ambient temperatures soar. On the other hand, the Embraco FFI7.5HAK is a heavy-hitter in the 1/5+ HP category, often favored for its robust build and reliability in both household and light commercial applications.

    Technical Comparison Table

    Feature Daewoo JX58LHS5-K Embraco FFI7.5HAK
    Model JX58LHS5-K FFI7.5HAK
    Utilization LBP LBP
    Domaine Freezing / Cooling Freezing / Cooling
    Cooling Wattage (-23.3°C) ~140 W ~170 W
    Capacity (Cubic Feet) 8 – 10 cu.ft 10 – 12 cu.ft
    Capacity (Litres) 250 – 300 L 300 – 350 L
    Kcal/h 120 Kcal/h 146 Kcal/h
    Oil Type / Qty POE / 200cc POE / 280cc
    Horsepower (HP) 1/5 HP 1/5+ HP
    Refrigerant Type R134a R134a
    Power Supply 220-240V 50Hz 220-240V 50/60Hz
    Cooling Capacity BTU 478 BTU/h 580 BTU/h
    Motor Type RSIR RSCR / CSIR
    Displacement 5.8 cm³ 6.76 cm³
    Winding Material Copper Copper
    Pressure Charge 0.5 – 1.2 Bar (Low side) 0.6 – 1.5 Bar (Low side)
    Capillary Size 0.031″ x 3m 0.036″ x 3m
    Ref. Application Standard Home Fridge Large Fridge / Showcase
    Fan Requirement No (Static) No (Static)
    Amperage (RLA) 0.8 A – 1.0 A 1.1 A – 1.3 A
    LRA (Locked Rotor) 4.7 A 14.0 A
    Relay Type PTC PTC / Current Relay
    Capacitor No Optional (Run 5µF)
    Origin South Korea Brazil

    Efficiency Metrics (COP) & Performance Data

    Efficiency is measured by the Coefficient of Performance (COP). Below is the projected performance for the Embraco FFI7.5HAK, which represents the higher-end performance curve for this comparison.

    Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
    -30 115 110 1.05
    -25 155 125 1.24
    -23.3 170 132 1.29
    -20 205 145 1.41
    -15 265 165 1.61
    -10 335 185 1.81

    Direct Replacements (R134a)

    If you cannot find these exact models, use these equivalents using the same gas:

    1. ZMC GM70AZ (Reliable 1/5 HP alternative)
    2. Secop (Danfoss) TLS6F
    3. ACC GVY66AA
    4. Tecumseh THG1365Y
    5. Huayi HYE69YG

    Alternative Gas Replacements (R600a Conversion)

    Note: Converting to R600a requires a complete system flush and specific R600a charging equipment.

    1. Embraco EMX70CLC
    2. Secop NLE7KK
    3. Donper S75CZ
    4. Jiaxipera T1114Y
    5. ACC HMK95AA

    Engineering Insights: Choosing Between the Two

    Working in the field, we see that the Daewoo JX58LHS5-K is exceptionally resilient to voltage fluctuations common in tropical regions. However, the Embraco FFI7.5HAK offers a higher displacement (6.76 cm vs 5.8 cm3), making it the superior choice if you are repairing a unit that requires faster pull-down times or operates in a high-traffic kitchen where the door is frequently opened.

    Maintenance Tip: Always check the LRA (Locked Rotor Amps). The Embraco’s high LRA of 14.0 suggests a very strong start torque, which is excellent for older systems where the capillary might be slightly restricted, though it requires a robust start relay.


    Focus Keyphrase: Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison

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    Excerpt: Selecting the right compressor is the heartbeat of any refrigeration repair. Today, we dive deep into the Daewoo JX58LHS5-K and Embraco FFI7.5HAK. Both use R134a and operate in the LBP range, but their cooling capacities and displacements differ, making one better suited for tropical climates and the other for high-performance pull-down needs.

    Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison mbsmpro
    Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison mbsmpro
    Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison mbsmpro



    LG MA57LBJG Compressor 1/6 HP R134a LBP Technical Specifications and Replacements

    LG MA57LBJG Compressor 1/6 HP R134a LBP Technical Specifications and Replacements mbsmpro

    Mbsm.pro, Compressor, MA57LBJG, 1/6 hp, LG, Cooling, R134a, 160 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, Freezing

    The LG MA57LBJG is a staple in the refrigeration world, specifically engineered for low back pressure (LBP) applications. As a technician or engineer, you recognize this model by its robust build and reliability in domestic cooling. Operating on R134a refrigerant, it balances efficiency with a compact frame, making it a go-to choice for household freezers and large refrigerators.


    Technical Specifications Table

    Feature Specification Details
    Model MA57LBJG
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Deep Cooling
    Cooling Wattage at -23.3°C 160 W
    Cubic Feet Capacity 8 – 11 cu.ft (Depending on insulation)
    Litres Capacity 220 – 300 Liters
    Kcal/h 138 Kcal/h
    Oil Type and Quantity Ester Oil (POE), 180cc
    Horsepower (HP) 1/6 HP
    Refrigerant Type R134a
    Power Supply 220-240V / 50Hz / 1Ph
    Cooling Capacity BTU 546 BTU/h
    Motor Type RSIR (Resistive Start-Inductive Run)
    Displacement 5.7 cc
    Winding Material Copper
    Pression Charge 0.5 to 1.2 Bar (Low side running)
    Capillary Recommendation 0.031″ (0.8mm) x 3 meters (approx)
    Common Application LG, Samsung, and Whirlpool Refrigerators
    Temperature Function -35°C to -10°C
    Cooling Method Natural Cooling (Static)
    Commercial Status Residential / Light Commercial
    Amperage (RLA) 0.9 A – 1.2 A
    LRA (Locked Rotor Amps) 6.5 A
    Type of Relay PTC Relay
    Capacitor Usually Not Required (RSIR)
    Origin/Export Made in China / Exported Globally

    Efficiency Metrics (COP) & Performance

    Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
    -30 115 105 1.10
    -25 148 120 1.23
    -23.3 160 128 1.25
    -20 185 138 1.34
    -15 230 155 1.48
    -10 285 175 1.63

    Compressor Replacement Guide

    Top 5 Replacements (Same R134a Gas)

    1. Embraco: EMI60HER / EMT45HDR
    2. Secop (Danfoss): TLES5.7FT.3
    3. Tecumseh: THG1358YKS
    4. Samsung: SD152H-L1UA
    5. Huayi: HYB60MHU

    Top 5 Replacements (Alternative Gas – R600a Conversion Required)

    1. LG: CMA057LHEG
    2. Embraco: EMX55CLC
    3. Secop: TLES5.7KK.3
    4. ACC: HMK80AA
    5. Donper: S65CY

    Note: Replacing R134a with R600a requires a complete system flush, change of oil, and a specific R600a charging procedure due to flammability.


    Engineering Insights: Comparison & Benefits

    When compared to the slightly more powerful MA62LJJG (1/5 HP), the MA57LBJG offers a higher energy efficiency ratio for mid-sized units. While the 1/5 HP model provides faster pull-down times, the MA57LBJG is optimized for maintaining steady-state freezing temperatures with lower electrical overhead.

    Why use this model?

    • Copper Windings: Unlike some newer aluminum-wound budget models, the copper internals of the MA57LBJG ensure better thermal conductivity and longer life under high-heat conditions.
    • Low Vibration: The internal spring mounting is tuned specifically for domestic environments, ensuring whisper-quiet operation.

    Professional Tips for Installation:

    Pro Tip: Always replace the filter drier when swapping this compressor. Since it uses POE oil, it is highly hygroscopic (absorbs moisture quickly). Limit the time the system is open to the atmosphere to under 15 minutes.


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    Excerpt: The LG MA57LBJG is a high-performance 1/6 HP compressor designed for R134a refrigerant in Low Back Pressure (LBP) applications. Ideal for domestic freezers, it delivers 160W of cooling capacity at -23.3°C. This guide provides comprehensive technical data, winding details, and a full cross-reference list for professional refrigeration technicians and engineers.

    LG MA57LBJG Compressor 1/6 HP R134a LBP Technical Specifications and Replacements mbsmpro
    1/6 HP, EMI60HER, HYB60MHU, LBP, LG compressor, MA57LBJG, mbsm, mbsm.pro, mbsmgroup, mbsmpro.com, R134a, Refrigeration Repair, SD152H, THG1358YKS, TLES5.7FT.3



    How many cubic feet can LJ118CY1 compressor cooling ?

    How many cubic feet can LJ118CY1 compressor cool? mbsmpro

    The motor shown in the image is a Donper brand, model LJ118CY1. This motor uses R600a (isobutane) refrigerant.

    Based on its power output, this motor is approximately 1/4 horsepower (or 1/4+ horsepower with good thrust), and is very suitable for use in household refrigerators ranging from 14 to 16 cubic feet (approximately 320 to 450 liters), depending on the insulation efficiency and circuit design.

    Donper is a leading and highly respected Chinese brand in the global market, and major companies use it in their original production lines because it combines quiet operation with low energy consumption.

    Technical Specification Table

    Attribute Specification
    Model LJ118CY1
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Cooling
    Cooling Wattage at -23.3°C 198 W
    Kcal/h 170 Kcal/h
    Oil Type and Quantity Mineral / POE (approx. 180-200ml)
    Horsepower (HP) 1/4 HP
    Refrigerant Type R600a
    Power Supply 220–240V ~ 50Hz, 1Ph
    Cooling Capacity BTU 675 BTU/h
    Motor Type RSCR / RSIR
    Displacement 11.8 cm³
    Winding Material Copper
    Pressure Charge Low Pressure (Suction)
    Capillary Recommendation 0.031 – 0.036 inch (Depends on length)
    Refrigerator Size 14 to 16 Feet (Domestic)
    Temperature Function -35°C to -15°C
    Fan Requirement Static Cooling (No fan required for compressor)
    Commercial Use No (Mainly Domestic)
    Amperage (RLA) 0.9 A – 1.2 A
    LRA (Locked Rotor Amps) 6.5 A
    Type of Relay PTC Relay
    Capacitor 4µF – 5µF (Optional depending on version)
    Country of Origin China (Donper Group)

    Compressor Replacements

    5 Replacements (Same Gas R600a):

    1. Embraco: EMX70CLC
    2. Secop (Danfoss): NLE11KK.4
    3. Jiaxipera: NT1114Y
    4. Huayi: HYB115MHU
    5. LG: CMA069LHEM

    5 Replacements (Other Gas R134a – Requires system flush and oil change):

    1. Embraco: FFI 7.5HAK
    2. Secop: TLES7.5KK.3
    3. ZMC: GM80AF
    4. Donper: LU118CY (R134a version)
    5. Panasonic: QB77C16GPX5

    Mbsmpro.com, Compressor, LJ118CY1, 1/4 hp, Donper, Cooling, R600a, 198 W, 1.1 A, 1Ph 220-240V 50Hz, LBP, RSCR, -35°C to -15°C

    The LJ118CY1 stands as a high-efficiency hermetic reciprocating compressor specifically engineered for domestic refrigeration. Developed by Donper, a global leader in cooling technology, this model is optimized for R600a refrigerant, ensuring a minimal environmental footprint while delivering robust thermal performance.

    Efficiency and Performance Metrics

    The LJ118CY1 is designed for Low Back Pressure (LBP) applications. Its displacement of 11.8cc allows it to reach deep freezing temperatures quickly, making it ideal for large refrigerators and domestic upright freezers.

    Performance Data Table (ASHRAE Conditions)

    Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
    -30 145 112 1.29
    -25 185 128 1.45
    -23.3 198 134 1.48
    -20 235 145 1.62
    -15 290 162 1.79
    -10 360 180 2.00

    Comparison: Donper LJ118CY1 vs. Standard 1/5 HP Units

    When comparing this unit to a standard 1/5 HP compressor (like the GM70AZ), the LJ118CY1 offers a significantly higher displacement ($11.8\text{ cm}^3$ vs $7.0\text{ cm}^3$). This extra “lung capacity” allows the refrigerator to recover its temperature faster after the door has been opened frequently, which is vital in warmer climates.

    Technical Advice and Installation Benefits

    • Eco-Friendly: R600a gas has zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming Potential).
    • Low Noise: The LJ118CY1 is known for its dampened vibration levels, making it suitable for modern open-plan kitchens.
    • Maintenance: Always ensure the condenser is clean. Because R600a operates at lower pressures, even a slight blockage can cause a noticeable drop in COP (Coefficient of Performance).

    Expert Notice: When replacing a compressor with the LJ118CY1, ensure the vacuum process is thorough. R600a systems are highly sensitive to moisture and non-condensable gases.


    Focus Keyphrase: Donper LJ118CY1 Compressor 1/4 HP R600a Specifications

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    Tags: LJ118CY1, Donper, 1/4 HP Compressor, R600a, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Refrigerator Repair, EMX70CLC Replacement, NLE11KK.4, Jiaxipera NT1114Y, Cooling Capacity, LBP Compressor.

    Excerpt: The Donper LJ118CY1 is a high-performance 1/4 HP hermetic compressor designed for domestic refrigerators using R600a refrigerant. Known for its efficiency and quiet operation, it features a displacement of 11.8cc and a cooling capacity of 198W at -23.3°C. This article provides technical details, wiring diagrams, and compatible replacement models for professional technicians.

    How many cubic feet can LJ118CY1 compressor cool? mbsmpro
    How many cubic feet can LJ118CY1 compressor cool? mbsmpro



    The Cooling Workhorse: Deep Dive into the Danfoss NL7.3FT Compressor

    The Cooling Workhorse: Deep Dive into the Danfoss NL7.3FT Compressor mbsmpro

    Technical Specifications: Danfoss NL7.3FT Compressor

    Feature Detail
    Model Danfoss NL7.3FT (Code: 105G6726)
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Cold Storage
    Cooling Wattage at -23.3°C 185 Watts
    Kcal/h 159 Kcal/h
    Oil Type and Quantity Ester (POE), 320 cm³
    Horsepower (HP) 1/4 HP (Approx. 0.25 HP)
    Refrigerant Type R134a
    Power Supply 220-240V / 50Hz / 1Ph
    Cooling Capacity BTU 631 BTU/h
    Motor Type RSIR/CSIR (High Starting Torque capability)
    Displacement 7.27 cm³
    Winding Material Copper
    Pressure Charge Low side (Suction)
    Capillary 0.031″ – 0.036″ (Size varies by application)
    Compatible Refrigerators Whirlpool, Indesit, Ariston, Domestic Chest Freezers
    Temperature Function -35°C to -10°C
    With Fan or No Static or Fan-assisted (Usually Static in domestic)
    Commercial or No Domestic and Light Commercial
    Amperage (FLA) ~1.1 A to 1.3 A
    LRA (Locked Rotor Amps) 9.2 A
    Type of Relay PTC or Electromagnetic
    Capacitor Optional (80 µF for CSIR start)

    Compressor Cross-Reference & Replacements

    Same Refrigerant (R134a)

    1. Embraco NEK2125GK / FFI8.5HAK
    2. Secop TLES7.5FT.3
    3. Tecumseh AEZ1380Y
    4. ACC / Cubigel GL80AA / GL80AB
    5. Huayi HYB81MHU

    Alternative Refrigerants (R600a/R290)

    1. Embraco EMT6170Z (R404A conversion)
    2. Secop NLE8.8CN (R290 – High Efficiency)
    3. Embraco VEMZ 9C (R600a Inverter upgrade)
    4. Donper KK73FT (R134a direct clone)
    5. Jiaxipera NT1114Y (R600a equivalent cooling)

    Mbsmpro.com, Compressor, Danfoss, NL7.3FT, 1/4 hp, Secop, Cooling, R134a, 185 W, 1.3 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, Freezing

    The refrigeration industry relies heavily on the reliability of the heart of the system: the compressor. Among the elite performers in the domestic and light commercial sector, the Danfoss NL7.3FT stands out as a robust, European-engineered solution. Transitioning from the legacy Danfoss brand to Secop, this model remains a staple for technicians who demand durability and high thermal efficiency in low-temperature environments.

    Efficiency Metrics (COP) & Performance Data

    Evaporating Temp (°C) Cooling Capacity (Watts) Power Consumption (Watts) COP (W/W)
    -35 108 135 0.80
    -30 145 158 0.92
    -23.3 185 184 1.01
    -20 225 205 1.10
    -15 295 230 1.28
    -10 380 255 1.49

    Engineering Insight: Why the NL7.3FT?

    As an engineer in the field, I’ve found that the NL7.3FT excels because of its internal suspension system. Unlike cheaper alternatives that vibrate excessively and cause copper fatigue, the Danfoss “NL” series uses a refined valve plate design that reduces noise while maintaining high volumetric efficiency.

    When comparing it to the Embraco FFI series, the Danfoss NL7.3FT often shows a more stable performance under fluctuating voltage (220-240V range). It is specifically designed for LBP (Low Back Pressure), making it the ideal candidate for deep freezers where the goal is to reach -23°C quickly and hold it with minimal energy consumption.

    Field Notes & Expert Advice

    • Capillary Cleaning: If you are replacing a burnt-out NL7.3FT, always flush the system with R141b. R134a systems are prone to paraffin wax buildup in the capillary tube.
    • Oil Management: This unit uses POE oil. Avoid leaving the suction ports open for more than 10 minutes, as POE oil is highly hygroscopic (it absorbs moisture from the air instantly).
    • The LST/HST Factor: While rated for Low Starting Torque, adding a start capacitor (80µF) can convert this into a High Starting Torque unit, which is a lifesaver in regions with unstable power grids.

    Focus Keyphrase: Danfoss NL7.3FT Compressor R134a 1/4 HP Low Back Pressure Refrigeration

    SEO Title: Mbsmpro.com | Danfoss NL7.3FT Compressor | 1/4 HP R134a LBP Technical Specs

    Meta Description: Discover the full technical specifications of the Danfoss NL7.3FT compressor. Learn about its cooling capacity, 185W output, R134a compatibility, and cross-reference replacements for professional refrigeration repair.

    Slug: danfoss-nl7-3ft-compressor-r134a-1-4-hp-specs

    Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Danfoss NL7.3FT, Secop 105G6726, 1/4 HP Compressor, R134a LBP, Embraco NEK2125GK Replacement, Fridge Compressor Repair, NL7.3FT Specs, HVAC Engineering.

    Excerpt: The Danfoss NL7.3FT is a high-performance LBP compressor designed for R134a refrigerant, delivering 185 Watts of cooling capacity at -23.3°C. Ideal for domestic freezers and light commercial units, this 1/4 HP motor offers exceptional reliability and low noise levels, making it a favorite for professional technicians and refrigeration engineers globally.

    The Cooling Workhorse: Deep Dive into the Danfoss NL7.3FT Compressor mbsmpro
    1/4 HP Compressor, ACC GVY75AA, Compressor Replacement, Danfoss, Embraco FF8.5HB, fridge repair, GL70AA, LBP compressor, mbsm, mbsm.pro, mbsmgroup, mbsmpro.com, NL7.3FT, R134a compressor, Secop NL7.3FT, Tecumseh THG1374YS



    Technical Troubleshooting: Automatic Washer Stops After Filling

    Technical Troubleshooting: Automatic Washer Stops After Filling mbsmpro

    Focus keyphrase: Troubleshooting Automatic Washer Stops After Filling Cycle

    SEO Title: Mbsmpro, Troubleshooting, Automatic Washer, Stops After Filling, Water Level Switch, Lid Switch, Drain Motor, Error Codes

    Meta Description: Is your washing machine dead silent after filling? Learn how to diagnose lid switches, pressure sensors, and drive motors like a pro. Expert repair guide for top and front loaders.

    Slug: automatic-washer-stops-after-filling-repair-guide

    Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Washer Repair, Appliance Troubleshooting, Water Level Switch, Lid Switch Failure, DIY Repair, Washing Machine Maintenance

    Excerpt: If your automatic washer fills with water but refuses to start the agitation or wash cycle, you are facing a common mechanical or electronic failure. This guide explores the primary culprits, including faulty lid switches, clogged pressure tubes, and failing drive motors, providing technical insights to help you diagnose and repair your appliance efficiently and safely.


    Mbsmpro.com, Troubleshooting, Automatic Washer, Stops After Filling, Lid Switch, Pressure Sensor, Drive Motor, 110V-240V, 50/60Hz

    When an automatic washer fills up but then sits in stony silence, it’s more than just an inconvenience—it’s a technical puzzle. As someone who has spent years in the field with a multimeter in hand, I can tell you that this specific symptom usually points to a break in the “logical sequence” of the machine’s controller.

    The Anatomy of the Failure

    For a washer to transition from the Fill Stage to the Wash Stage, specific electrical conditions must be met. If the control board doesn’t receive a “Go” signal from the sensors, the timer will stall.

    Primary Technical Culprits

    Component Function Failure Symptom
    Lid Switch / Door Lock Safety interrupt for the motor circuit. Machine fills but won’t agitate or spin.
    Water Level Switch Detects air pressure from the tub. Machine keeps filling or stops without starting motor.
    Drive Motor / Capacitor Provides mechanical rotation. Hum sounds but no movement; dead silence if open circuit.
    Drive Belt Transfers power from motor to drum. Motor runs (hums/whirs) but the drum is stationary.

    Deep Dive: The Water Level Pressure Switch

    The most common reason a machine stops after filling is that it doesn’t know it’s full. A small transparent tube connects the outer tub to a pressure switch. If this tube is clogged with “scrub” (detergent gunk) or has a pinhole leak, the diaphragm inside the switch won’t trip the electrical contact to the motor.

    Technical Comparison: Pressure Switch vs. Hall Effect Sensor

    Feature Mechanical Pressure Switch Electronic Hall Effect Sensor
    Signal Type Discrete (On/Off) Analog/Digital Frequency
    Reliability Prone to contact pitting Highly reliable but sensitive to moisture
    Common Use Traditional Top Loaders Modern Inverter Front Loaders
    Voltage Usually 120V/240V AC 5V – 12V DC

    The “Lid Switch” Logic

    In most American-style top loaders, the lid switch is wired in series with the motor. If the plastic tab on your lid is broken, or the internal switch has failed due to arcing, the machine will fill perfectly (as the water valves are on a different circuit) but will never “click” over to start the motor.

    Engineering Insight: Always check for continuity across the lid switch terminals using a multimeter. If the resistance is infinite ($\infty \Omega$) when the switch is depressed, the component is defective.

    Wiring Schematic Concept

    For technicians, the circuit usually follows this path:

    L1 (Hot) -> Timer/Main Board -> Water Level Switch (Full Position) -> Lid Switch -> Motor Start Capacitor -> Main Motor -> Neutral.


    Pro-Tips and Maintenance Notices

    • The “Blow” Test: If you suspect the water level switch, disconnect the small tube from the tub side and blow gently into it toward the switch. You should hear a distinct “click.” If you don’t, the diaphragm is ruptured.
    • Capacitor Health: If the motor hums but doesn’t turn, the Start Capacitor is likely weak. Check the microfarad ($\mu F$) rating against its label.
    • Safety First: Always disconnect the power supply before testing internal components. Water and electricity are a lethal combination.

    Engineer’s Note: Modern “High Efficiency” (HE) machines may stop and “sense” for several minutes. Do not confuse a sensing pause with a mechanical failure. Check for error codes (e.g., F8 E1 or LF) on the digital display.

    Technical Troubleshooting: Automatic Washer Stops After Filling mbsmpro
    Technical Troubleshooting: Automatic Washer Stops After Filling mbsmpro



    Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration

    Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration mbsmpro

    Mbsmpro.com, Compressor, QB86C18GAX5, 1/4 hp, Panasonic, Cooling, R134a, 201 W, 1Ph, 220-240V 50Hz, LBP, RSIR, -35°C to -15°C, Freezing


    Technical Specifications Table

    Feature Details
    Model QB86C18GAX5
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Deep Cooling
    Oil Type and Quantity Ester Oil (POE) / 230 ml
    Horsepower (HP) 1/4 HP
    Refrigerant Type R134a
    Power Supply 220-240V / 50Hz / 1PH
    Cooling Capacity BTU 686 BTU/h (approx. 201W)
    Motor Type RSIR (Resistance Start – Induction Run)
    Displacement 8.6 cm³
    Winding Material Copper
    Pressure Charge 0.4 to 1.1 Bar (Suction Side)
    Capillary Recommendation 0.036″ / 0.042″ (Dependent on cabinet size)
    Refrigerator Models Large domestic side-by-side, Chest Freezers, Display Chillers
    Temperature Function -35°C to -15°C
    Fan Requirement Optional (Static cooling usually sufficient)
    Commercial Use Light Commercial / Domestic High-Capacity
    Amperage (RLA) 1.1A – 1.3A
    LRA (Locked Rotor Amps) 8.0A
    Type of Relay PTC Relay
    Capacitor N/A (Standard RSIR)

    Compressor Cross-Reference (Same Gas – R134a)

    1. Embraco: EGAS80HLR / FFI8.5HAK
    2. Danfoss/Secop: TLES8.7F / NLE8.8FT
    3. LG: MA88LAEP
    4. Tecumseh: THG1374YS
    5. Samsung: SK182H-L2U

    Compressor Cross-Reference (Alternative Gas – R600a)

    1. Panasonic: QB86C18GAX5 (R134a specific, use QB91 series for R600a equivalent)
    2. Embraco: EM2X1121U
    3. Secop: NLE11KK
    4. Jiaxipera: NT1114Y
    5. Donper: LU111CY

    Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration

    In the demanding world of refrigeration, the Panasonic QB series has established itself as a benchmark for durability and thermal resilience. The QB86C18GAX5, a 1/4 HP unit, is a staple in high-capacity domestic refrigerators and light commercial freezers. Designed to operate under Low Back Pressure (LBP) conditions, this compressor is particularly favored in regions with high ambient temperatures due to its superior heat dissipation and robust motor design.

    Performance and Efficiency

    With a displacement of 8.6cc, the QB86C18GAX5 strikes a perfect balance between power consumption and cooling velocity. It provides a cooling capacity of approximately 201 Watts (686 BTU/h), which is the sweet spot for large family refrigerators or chest freezers. The RSIR (Resistance Start – Induction Run) motor ensures a simple electrical setup, reducing the points of failure compared to systems requiring complex start/run capacitors.

    Comparison: Panasonic vs. Embraco & Secop

    While the Embraco EGAS80HLR is often cited as a direct competitor, the Panasonic QB86C18GAX5 often wins on mechanical silence. Panasonic’s internal damping system is specifically engineered to reduce “knocking” sounds during the start-stop cycle. Compared to the Secop TLES8.7F, the Panasonic unit tends to handle voltage fluctuations slightly better, a critical factor for field technicians working in areas with unstable power grids.

    Professional Installation & Maintenance Tips

    • Oil Sensitivity: This compressor uses POE (Ester) oil. This oil is extremely hygroscopic (absorbs moisture quickly). Never leave the compressor open to the atmosphere for more than 10 minutes during installation.
    • Vacuuming Protocol: A deep vacuum is non-negotiable. Moisture mixed with POE oil creates acid that will etch the copper windings and lead to a “grounded” compressor.
    • Filter Drier Replacement: Always use a high-quality 20g or 30g drier. Given the 1/4 HP power, a larger drier ensures a cleaner system for a longer lifespan.

    Focus Keyphrase: Panasonic QB86C18GAX5 Compressor 1/4 HP R134a Specs

    SEO Title: Mbsm.pro – Panasonic QB86C18GAX5 Compressor: 1/4 HP, R134a, Technical Data

    Meta Description: Full technical review of the Panasonic QB86C18GAX5 compressor. 1/4 HP, R134a, 201W cooling capacity. Ideal for domestic refrigerators and freezers. Find equivalents and installation tips.

    Slug: panasonic-qb86c18gax5-compressor-1-4hp-r134a-specifications

    Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Panasonic, QB86C18GAX5, 1/4 HP, R134a, LBP, EGAS80HLR, FFI8.5HAK, TLES8.7F, MA88LAEP, THG1374YS, SK182H-L2U, Refrigeration Repair, Compressor Replacement.

    Excerpt: The Panasonic QB86C18GAX5 is a 1/4 HP reciprocating compressor engineered for high-efficiency Low Back Pressure (LBP) applications. Using R134a refrigerant and a displacement of 8.6cc, it delivers a cooling capacity of 201W. This guide provides technicians with essential technical data, including amperage, displacement, and a comprehensive cross-reference list for modern repairs.

    Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration mbsmpro
    Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration mbsmpro



    Mastering the LG KX69LBEG: The Heart of Modern Domestic Refrigeration

    Mastering the LG KX69LBEG: The Heart of Modern Domestic Refrigeration mbsmpro

    Mbsm.pro, Compressor, KX69LBEG, 1/5 hp, LG Electronics, R134a, 150 W, 1Ph, 220-240V 50Hz, LBP, Reciprocating, -35°C to -10°C, Refrigerator


    Technical Specifications Table

    Feature Details
    Model KX69LBEG
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Deep Cooling
    Oil Type and Quantity POE or Mineral (R134a compatible) / approx. 180-220ml
    Horsepower (HP) 1/5 HP
    Refrigerant Type R134a
    Power Supply 220-240V / 50Hz / 1PH
    Cooling Capacity BTU Approx. 580 – 620 BTU/h
    Motor Type RSIR (Resistance Start – Induction Run)
    Displacement 6.9 cm³
    Winding Material Copper
    Pressure Charge (Suction) 0.5 to 1.2 Bar (Depending on application)
    Capillary Recommendation 0.031″ or 0.036″ (Length varies by cabinet)
    Refrigerator Models LG GR-Series, Domestic Single/Double Door units
    Temperature Function -35°C to -10°C
    Fan Requirement Static Cooling (No fan required for compressor)
    Commercial Use No (Domestic / Light Residential)
    Amperage (RLA) 0.9A – 1.1A
    LRA (Locked Rotor Amps) 5.5A – 6.0A
    Type of Relay PTC Relay
    Capacitor Not required (RSIR), optional Start Cap for high torque

    Compressor Cross-Reference (Same Gas – R134a)

    1. Danfoss/Secop: TLS7F
    2. Embraco: EMI60HER / NEK1116Z
    3. Tecumseh: THG1365YS
    4. Samsung: SD162
    5. ACC/Sikor: GVY66AA

    Compressor Cross-Reference (Alternative Gas – R600a)

    1. LG: MSA69LBEG (R600a version)
    2. Embraco: EMX55CLC
    3. Danfoss: TLES5.7KK.3
    4. Secop: NLE6.0KK
    5. Jiaxipera: T1112GY

    Mastering the LG KX69LBEG: The Heart of Modern Domestic Refrigeration

    When a refrigerator fails, the culprit is often the compressor—the mechanical heart that pumps life into the cooling cycle. Among the most reliable workhorses found in household units is the LG KX69LBEG. This 1/5 HP reciprocating compressor is engineered specifically for Low Back Pressure (LBP) applications, making it the ideal candidate for freezers and standard kitchen refrigerators that need to maintain consistent sub-zero temperatures.

    Performance Dynamics

    The KX69LBEG operates on a displacement of 6.9cc. Unlike larger commercial units that rely on high-torque start capacitors, this model utilizes an RSIR motor configuration. This means it is highly efficient for domestic settings where power stability is standard, drawing approximately 150 Watts during its peak cooling phase. Its thermally protected design ensures that even during high-ambient summer temperatures, the internal windings remain shielded from catastrophic failure.

    Comparative Analysis: LG vs. The Competition

    In the world of 1/5 HP compressors, the KX69LBEG stands out for its low vibration and silent operation. Compared to the Danfoss TLS7F, the LG model often provides a more compact footprint, which is essential for modern “slim-back” refrigerator designs. While the Embraco NEK1116Z might offer a slightly higher BTU output, the LG KX69LBEG is prized for its longevity and “copper-heavy” winding durability.

    Engineering Insights and Installation Tips

    • System Cleansing: When replacing a burnt-out KX69LBEG, always flush the condenser and evaporator. Residual acidity from a motor burnout will destroy the new unit.
    • Filter Drier: Never reuse a filter drier. Always install a new 15g or 20g XH-9 molecular sieve drier to handle the R134a refrigerant.
    • Vacuuming: Ensure a vacuum level of at least 500 microns. R134a is highly sensitive to moisture, which can lead to capillary tube waxing and blockage.

    Engineer’s Note: If you are substituting this model with an R600a alternative, you MUST change the expansion device (capillary) and the lubricant. Mixing R134a and R600a systems without proper modification is a recipe for system failure.


    Focus Keyphrase: LG KX69LBEG Compressor 1/5 HP R134a Technical Specs

    SEO Title: Mbsm.pro – LG KX69LBEG Compressor: 1/5 HP, R134a, LBP Technical Guide

    Meta Description: Discover the complete technical specifications for the LG KX69LBEG compressor. This 1/5 HP R134a unit is perfect for domestic refrigerators. Learn about its cooling capacity, amperage, and the best 5 replacements for easy repairs.

    Slug: lg-kx69lbeg-compressor-1-5hp-r134a-specifications

    Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, LG, KX69LBEG, 1/5 HP, R134a, LBP, Compressor Replacement, TLS7F, EMI60HER, THG1365YS, SD162, GVY66AA, EMX55CLC, TLES5.7KK, Refrigeration Repair.

    Excerpt: The LG KX69LBEG is a high-performance 1/5 HP reciprocating compressor designed for Low Back Pressure (LBP) domestic refrigeration. Operating on R134a refrigerant at 220-240V/50Hz, this thermally protected unit is the standard for LG’s cooling reliability. In this guide, we break down its displacement, amperage, and provide a comprehensive list of equivalent replacement models.

    Mastering the LG KX69LBEG: The Heart of Modern Domestic Refrigeration mbsmpro
    Mastering the LG KX69LBEG: The Heart of Modern Domestic Refrigeration mbsmpro



    Engineering Overview: The S118CY1 Architecture

    mbmpro-2026-01-30_203057-mbsmpro mbsmpro

    Focus Keyphrase: Donper S118CY1 Compressor R600a 1/4 HP LBP Refrigeration Specifications and Replacement Guide for Technicians and Engineers

    SEO Title: Mbsmpro.com, Donper, S118CY1, Compressor, 1/4 HP, LBP, R600a, 210 W, 1Ph 220-240V 50Hz, Freezing and Cooling

    Meta Description: Detailed technical analysis of the Donper S118CY1 compressor. Includes 1/4 HP power rating, R600a refrigerant specs, LBP application data, and equivalent replacement models for professional repair.

    Slug: donper-s118cy1-compressor-r600a-1-4-hp-specs

    Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Donper, S118CY1, R600a, Compressor, 1/4 HP, LBP, Refrigeration, Embraco EMX70CLC, Secop NLY90R, Jiaxipera NT1114Y, Huayi HYE11YG, Cubigel GL90AA

    Excerpt: The Donper S118CY1 compressor is a cornerstone of modern domestic refrigeration, engineered for high efficiency in Low Back Pressure (LBP) environments. Utilizing R600a refrigerant, this 1/4 HP unit provides reliable cooling for large household refrigerators and freezers. This guide explores its technical parameters, electrical requirements, and the best cross-reference alternatives for field technicians.


    Mbsmpro.com, Donper, S118CY1, Compressor, 1/4 HP, LBP, R600a, 210 W, 1.1 A, 1Ph 220-240V 50Hz, Cooling and Freezing

    In the realm of hermetic refrigeration, the Donper S series has established a reputation for balancing cost-effectiveness with thermal durability. The S118CY1 model, specifically designed for R600a (isobutane) systems, represents a shift toward environmentally friendly refrigerants with low Global Warming Potential (GWP). As an engineer working in the field, understanding the nuances of this compressor is vital for ensuring system longevity and optimal thermodynamic performance.

    Engineering Overview: The S118CY1 Architecture

    The S118CY1 is a reciprocating piston compressor designed for Low Back Pressure (LBP) applications. This means it is optimized to operate at low evaporating temperatures, typically between -35°C and -15°C, making it the ideal “heart” for chest freezers and the freezer compartments of large side-by-side refrigerators. With a displacement of approximately 11.8 cm³, it delivers a cooling capacity that sits comfortably in the 1/4 HP category.

    One of the defining features of this model is its thermal protection system. In high-ambient environments, compressors often face the risk of winding burnout. The S118CY1 incorporates an internal or external thermal protector that interrupts power if the internal temperature exceeds safety thresholds, a critical fail-safe for residential appliances.

    Technical Specifications Table

    Feature Specification
    Model S118CY1
    Utilisation LBP (Low Back Pressure)
    Domaine Freezing / Deep Cooling
    Oil Type and Quantity Mineral or POE (Consult label), ~180ml – 220ml
    Horsepower (HP) 1/4 HP
    Refrigerant Type R600a (Isobutane)
    Power Supply 220-240V ~ 50Hz, 1 Phase
    Cooling Capacity BTU Approx. 715 BTU/h (at -23.3°C)
    Motor Type RSIR (Resistance Start – Induction Run)
    Displacement 11.8 cm³
    Winding Material High-Grade Copper
    Pressure Charge Low side (suction) depends on ambient
    Capillary Tube 0.031″ to 0.036″ (Internal Diameter)
    Compatible Appliances Large domestic refrigerators, display freezers
    Temperature Function -35°C to -15°C
    Cooling Method Static or Fan cooling (application dependent)
    Commercial/Residential Residential / Light Commercial
    Amperage (RLA) 0.9 A – 1.2 A (running)
    LRA (Locked Rotor Amps) 6.5 A – 7.5 A
    Type of Relay PTC Start Relay
    Capacitor Often not required (RSIR), optional Run Capacitor

    Performance Comparison: R600a vs. R134a

    When comparing the S118CY1 to its R134a counterparts (like the QD series), the thermodynamic efficiency of R600a becomes evident. R600a operates at lower pressures, which reduces the mechanical stress on the compressor valves and pistons. However, because R600a is flammable, the S118CY1 is built with “thermally protected” electrical components to prevent sparking in the event of a leak.

    Cross-Reference and Replacement Guide

    When a S118CY1 fails, finding an exact match is preferred, but field technicians often need equivalents based on local availability.

    Top 5 Replacements (Same Refrigerant: R600a)

    1. Embraco EMX70CLC: Known for extremely low noise levels and high COP.
    2. Secop (Danfoss) NLY9.0R: A robust European alternative with excellent thermal management.
    3. Jiaxipera NT1114Y: Widely used in high-end Samsung and LG units.
    4. Huayi HYE11YG: A direct competitor with similar displacement and mounting footprints.
    5. Sikolan ADW110: A reliable alternative for budget-friendly repairs.

    Top 5 Replacements (Alternative Refrigerant: R134a)
    Note: Replacing an R600a compressor with an R134a unit requires a complete system flush, oil compatibility check, and capillary tube adjustment.

    1. Donper QD110: The R134a sibling to the S118 series.
    2. Embraco GL90AA: A classic 1/4 HP+ LBP workhorse.
    3. Secop TLY8.7KK: High-efficiency R134a unit.
    4. ZMC GQR12AA: High displacement for heavy-duty cooling.
    5. Tecumseh THG1374YS: American standard for 1/4 HP refrigeration.

    Expert Field Advice and Notices

    • Notice on R600a Safety: Always use a vacuum pump and charging station rated for flammable gases. Never use a torch (brazing) near an open R600a system; use Lokring fittings if possible or ensure the system is completely purged with Nitrogen.
    • Capillary Maintenance: When replacing the S118CY1, always replace the filter drier. A clogged drier is the leading cause of premature compressor failure in R600a systems due to the formation of paraffin waxes at low temperatures.
    • Winding Integrity: If you suspect a motor failure, check the resistance between the Common, Start, and Run pins. A healthy S118CY1 should show consistent readings without a “short to ground.”
    • Mounting: Ensure the rubber grommets are in good condition. The S118CY1’s 11.8cc displacement creates specific harmonic vibrations that must be dampened to prevent copper pipe fatigue.

    Benefit for the User

    Choosing or replacing the Donper S118CY1 correctly ensures that the appliance maintains its energy rating. Using an undersized compressor will lead to “short-cycling” and high energy bills, while an oversized unit can cause evaporator icing. Following the 1/4 HP LBP specification ensures the evaporator remains at the precise delta-T required for food safety.

    mbmpro-2026-01-30_203057-mbsmpro mbsmpro
    mbmpro-2026-01-30_203057-mbsmpro mbsmpro