PHASE 1: SURGICAL IMAGE ANALYSIS

Feature	Visible Nameplate Data
Brand	Emerson Climate Technologies / Copeland
Model	KCE444HAG-B332H (Family: KCE444HAG)
Serial Number	GCRA-0909669
Voltage/Hz/Phase	1Ph 180-260 V AC / 230V, 50 Hz
Refrigerant	R-134a
LRA (Locked Rotor Amps)	13 A
Electrical Circuit	CSCR
Oil Type & Volume	10.5 oz POE (Polyolester)
Application	High Temp (HBP)
Relay & OLP	Relay: KARPN-4241 / OLP: KAT0072/H3 OR MRA-12309-12101
Capacitors	Run: 10 µF @ 440 V AC / Start: 40-60 µF @ 230 V AC
Manufacturing Origin	Mfg. By Emerson Climate Technologies (India) Limited

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PHASE 3: ARTICLE STRUCTURE

SEO Metadata

• Focus Keyphrase: KCE444HAG Compressor
• SEO Web Title: Mbsmpro.com, Compressor, KCE444HAG, 3/8 HP, Copeland, R-134a, 1077 W, 2.2 A, 230V, HBP, CSCR, High Temp
• Meta Description: Technical specs for the Copeland KCE444HAG compressor. Includes LRA, displacement, electrical data, and equivalent drop-in cross-references for field techs.
• Slug: copeland-kce444hag-specs-replacement
• Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, KCE444HAG, NEK6210Z, SC12G, NT1112Y, FL2088-SA, GP12TB
• Excerpt: Field data and technical breakdown of the Emerson Copeland KCE444HAG 3/8 HP commercial refrigeration compressor, including performance charts and direct replacement options.

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Field Introduction

Found this slugger in a glass-door Coca-Cola merchandiser or a heavy-duty sandwich prep table? You are looking at the Emerson Copeland KCE444HAG. This 3/8 HP unit is a cast-iron workhorse built to handle the constant door-opening abuse of commercial beverage coolers. When a shop owner relies on cold drinks to keep the lights on, this HBP (High Back Pressure) compressor does the heavy lifting. It runs smoothly on R-134a, but when it finally locks up or burns out a winding, you need the hard numbers to wire it back up or drop in a reliable match. Let’s break down the specs.

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Full Nameplate Data Table

Here is exactly what is stamped on the steel:

Parameter	Specification
Manufacturer	Emerson Climate Technologies (Copeland)
Model	KCE444HAG-B332H
Serial	GCRA-0909669
Voltage	180-260 V AC (Rated 230V), 50 Hz
Phase	Single Phase (1Ph)
Locked Rotor Amps (LRA)	13 A
Refrigerant	R-134a
Application	High Temp
Motor Type	CSCR
Oil Charge	10.5 oz Polyolester (POE)
Country of Origin	India

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Technical Specifications Table

Knowing what the compressor is doing on the inside dictates how you size the metering device and handle the system charge.

Specification	Value
Horsepower (HP)	3/8 HP
Displacement	12.05 cc
Cooling Capacity (HBP)	~3675 BTU/h / 1077 Watts
Application Type	HBP / CBP (High / Commercial Back Pressure)
Operating Voltage	230V
Motor Type	CSCR (Capacitor Start, Capacitor Run)
Max Continuous Current (MCC)	3.0 A
Rated Load Amps (RLA)	~2.2 A (at HBP standard conditions)

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Electrical & Origin Details

Wiring up a CSCR motor means you are dealing with potential relays and dual capacitors. Don’t mix up your start and run values, or you will bake the new start winding before lunch.

• Motor Circuit: CSCR (Capacitor Start, Capacitor Run) for high starting torque.
• Start Capacitor: 40-60 µF @ 230 V AC (Gets the heavy rotor moving against high head pressure).
• Run Capacitor: 10 µF @ 440 V AC (Keeps the power factor tight and the motor running cool).
• Relay Model: KARPN-4241 (Potential Relay).
• Overload Protector (OLP): KAT0072/H3 or MRA-12309-12101.
• Manufactured By: Emerson Climate Technologies (India) Limited.

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Efficiency Metrics Table

Here is how the KCE444HAG pulls down at varying evaporator temperatures (assuming a standard 130°F / 54.4°C condensing temp):

Evaporating Temp (°F / °C)	Cooling Capacity (BTU/h)	Power Input (Watts)	Amp Draw
45°F / 7.2°C (HBP)	3675	475	2.2
20°F / -6.7°C (CBP)	1880	339	1.64
0°F / -17.8°C	1190	268	1.33

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Drop-in Replacements

If you can’t source a fresh Copeland KCE444HAG from the supply house, these 3/8 HP, ~12cc, R-134a HBP models will bolt right in and keep the cabinet at temp:

• Embraco: NEK6210Z
• Secop / Danfoss: SC12G
• Jiaxipera: NT1112Y
• GMCC: FL2088-SA
• Cubigel / Huayi: GP12TB

The Copeland RS80C1E-CAZ-252 represents a specialized hermetic reciprocating compressor engineered for low-temperature refrigeration applications where reliability meets efficiency. This single-phase unit operates on R134a refrigerant and delivers consistent performance in demanding freezing environments ranging from -30°C to -10°C evaporating temperatures.

Technical Overview and Application Domain

The RS80C1E-CAZ-252 belongs to Copeland’s proven RS series of hermetic reciprocating compressors, designed specifically for commercial refrigeration applications requiring low back pressure operation. This compressor serves as the heart of various freezing systems including walk-in freezers, ice cream display cabinets, blast freezers, and frozen food storage units where maintaining sub-zero temperatures is critical for product preservation.

Operating at 220-240V single-phase 50Hz power supply, this unit draws approximately 5 amperes during normal operation, making it suitable for standard commercial electrical systems. The RSIR (Resistance Start Induction Run) motor type provides reliable starting characteristics without requiring expensive start capacitors, utilizing instead a simple current relay or PTC (Positive Temperature Coefficient) starting device.

Core Performance Characteristics

This 1 horsepower compressor generates approximately 8,000 BTU/hr cooling capacity when operating at standard LBP (Low Back Pressure) conditions. The displacement volume typically measures around 10.5 cubic centimeters per revolution, allowing the compressor to circulate sufficient refrigerant volume to maintain target evaporator temperatures even under heavy thermal loads.

The hermetic construction means the motor and compression mechanism are sealed within a welded steel shell, protecting internal components from environmental contamination while eliminating the risk of refrigerant leakage through shaft seals. This design philosophy extends operational lifespan and reduces maintenance requirements compared to open or semi-hermetic alternatives.

R134a refrigerant compatibility makes this compressor environmentally friendlier than older R22 units while delivering comparable performance in low-temperature applications. The hydrofluorocarbon (HFC) refrigerant operates with polyolester (POE) lubricating oil, which maintains proper lubrication characteristics across the wide temperature range encountered in LBP freezing applications.

Motor Design and Electrical Configuration

The RSIR motor configuration employs both main (run) and auxiliary (start) windings within the stator assembly. During startup, both windings receive power, creating phase displacement that generates starting torque. Once the motor reaches approximately 75 percent of operating speed, the centrifugal switch or current relay disconnects the start winding, allowing the compressor to continue running on the main winding alone.

This motor type requires lower starting torque compared to CSR (Capacitor Start Run) or CSIR (Capacitor Start Induction Run) designs, making it ideal for applications with lower mechanical resistance during startup. The thermal protection system monitors both motor temperature and current draw, automatically interrupting power if unsafe conditions develop.

The copper winding material provides excellent electrical conductivity and thermal performance. Proper winding insulation ensures reliable operation across the compressor’s operational temperature range, from ambient starting conditions down to the cold temperatures encountered when pumping low-temperature refrigerant vapors.

Refrigeration System Integration

When integrated into complete refrigeration systems, the RS80C1E-CAZ-252 typically connects to evaporator coils operating between -30°C and -10°C saturated suction temperature. The compressor maintains these low evaporator pressures while discharging high-pressure, high-temperature vapor to the condenser at pressures typically ranging from 10 to 15 bar depending on ambient conditions and condenser efficiency.

Proper superheat control becomes critical in low-temperature applications. Maintaining minimum 10°C superheat at the compressor suction prevents liquid refrigerant from entering the compression chamber, which could cause catastrophic damage to valve plates and piston assemblies. Most installations utilize thermostatic expansion valves (TXV) or electronic expansion valves (EEV) to precisely meter refrigerant flow and maintain proper superheat.

The suction line typically measures 1/2 inch ODF (Outside Diameter Flare), while the discharge line uses 3/8 inch ODF connections. Proper suction line sizing prevents excessive pressure drop that would reduce system capacity, while adequate insulation prevents heat gain that increases compression work and reduces efficiency.

Oil Management and Lubrication

The RS80C1E-CAZ-252 ships from the factory charged with approximately 400-450 milliliters of polyolester lubricating oil. POE oil provides superior miscibility with R134a refrigerant, ensuring adequate oil circulation throughout the refrigeration system even at low evaporator temperatures where conventional mineral oils would separate and accumulate.

In low-temperature applications, proper oil return becomes paramount. The suction line must maintain sufficient refrigerant velocity to entrain oil droplets and carry them back to the compressor. Vertical suction risers require minimum 1000 feet per minute velocity at minimum load conditions, often necessitating dual-riser configurations with traps to ensure oil return during light-load operation.

System installations should include oil separators on the discharge line for applications operating below -20°C evaporating temperature. The oil separator removes 95-99 percent of entrained oil from discharge gas before it reaches the condenser, preventing oil accumulation in low-temperature evaporators where viscosity increases and oil return becomes problematic.

Installation Best Practices

Mounting the compressor requires rigid support capable of handling vibration loads during operation. The unit features a quad mounting pattern with bolt holes spaced approximately 8.0 inches by 4.8 inches, standard for this compressor frame size. Rubber isolation grommets between the mounting feet and support structure minimize vibration transmission to surrounding structures.

Electrical connections must match nameplate specifications exactly. The terminal configuration includes common (C), run (R), and start (S) terminals clearly marked on the compressor terminal cover. Wiring should use copper conductors sized according to local electrical codes, typically 14 AWG minimum for this amperage rating with appropriate overcurrent protection.

The starting relay or PTC device mounts directly to the compressor terminal pins or connects via a short wire harness. Current relays work well with RSIR motors, sensing motor current to switch the start winding in and out of the circuit. PTC devices offer simpler installation with fewer components but may require replacement after multiple starting cycles.

Refrigerant Charging Procedures

Initial system evacuation must reach 500 microns or lower before refrigerant charging begins. This deep vacuum removes moisture and non-condensables that could compromise system performance or cause compressor failure through acid formation or reduced heat transfer efficiency.

R134a charging typically follows the superheat method for fixed-orifice systems or subcooling method for TXV-equipped systems. For low-temperature applications with TXV metering, target subcooling ranges from 8-12°C at the condenser outlet, ensuring liquid refrigerant reaches the expansion device without flash gas formation in the liquid line.

Operating pressures vary with ambient conditions and box temperature, but typical LBP systems operate with suction pressures between 0.5-2.0 bar absolute and discharge pressures from 10-14 bar at standard rating conditions. Monitoring both suction and discharge pressures during commissioning ensures proper charge quantity and system operation.

Performance Optimization

Maximizing compressor efficiency requires attention to several system parameters. Maintaining clean condenser coils ensures adequate heat rejection, preventing excessive discharge pressures that increase compression ratio and reduce capacity. Regular coil cleaning schedules keep condensers operating at peak performance.

Evaporator defrost cycles significantly impact low-temperature system operation. Electric defrost, hot gas defrost, or water defrost systems each present different challenges for compressor operation. Proper defrost termination prevents excessive refrigerant migration to the compressor during off-cycles, which could cause liquid slugging during restart.

Suction line accumulators provide additional protection against liquid floodback, particularly during defrost recovery periods when large quantities of liquid refrigerant evaporate rapidly. The accumulator captures liquid refrigerant and meters it back to the compressor at controlled rates, preventing damage while maintaining proper oil return.

Diagnostic Procedures

Monitoring amperage draw provides valuable diagnostic information. Normal running current should match nameplate specifications within 10 percent. Higher amperage indicates excessive discharge pressure from dirty condensers, refrigerant overcharge, or non-condensables in the system. Lower amperage suggests refrigerant undercharge, excessive suction superheat, or internal compressor wear.

Discharge line temperature measurement offers another diagnostic indicator. Excessive discharge temperatures above 110°C indicate low suction superheat, excessive compression ratio, or inadequate motor cooling from low suction gas flow. Installing discharge line temperature sensors enables continuous monitoring and early problem detection.

Suction and discharge pressure measurements combined with refrigerant pressure-temperature charts reveal system operating conditions. Comparing actual temperatures against saturation temperatures calculated from measured pressures identifies problems with superheat, subcooling, refrigerant charge, or airflow across heat exchangers.

Maintenance Requirements

Hermetic compressors require minimal routine maintenance compared to semi-hermetic or open designs. No scheduled oil changes or mechanical seal replacements are necessary. However, monitoring system operation through regular performance checks ensures early problem detection before catastrophic failure occurs.

Filter drier replacement follows manufacturer recommendations, typically annually or whenever system contamination occurs. Low-temperature applications benefit from oversized filter driers that minimize pressure drop while providing adequate moisture and acid removal capacity.

Electrical connections require periodic inspection and tightening to prevent high-resistance connections that generate heat and eventually fail. Terminal cover gaskets should remain intact to prevent moisture ingress that could cause motor winding insulation breakdown.

Troubleshooting Common Issues

Compressor short cycling often results from low refrigerant charge, dirty evaporator coils restricting airflow, or improperly sized thermal overload protection. Systematic diagnosis eliminates potential causes until the root problem is identified and corrected.

Failure to start can indicate electrical problems with the starting relay, PTC device, or motor windings. Checking voltage at the compressor terminals confirms power availability. Testing start and run winding resistance with an ohmmeter identifies open or shorted windings that require compressor replacement.

Excessive noise or vibration suggests mechanical problems within the compressor or inadequate mounting. Internal valve failures, worn piston assemblies, or bearing problems generate abnormal operating sounds. Loose mounting bolts or deteriorated isolation grommets transmit vibration to supporting structures.

Replacement and Cross-Reference Options

When replacement becomes necessary, several equivalent compressor models offer similar performance characteristics. Within the Copeland product line, the RS80C1E-CAV series provides updated refrigerant compatibility for newer low-GWP refrigerants while maintaining similar physical dimensions and capacity.

Environmental Considerations

R134a refrigerant, while significantly better than older CFC and HCFC refrigerants, still carries a global warming potential of 1430. Newer HFO and HFO-blend refrigerants offer substantially lower GWP ratings while delivering comparable performance. Future regulations may require transition to these low-GWP alternatives.

Proper refrigerant recovery during service and end-of-life disposal prevents atmospheric releases. Certified recovery equipment captures refrigerant for recycling or reclamation, complying with environmental regulations while reducing operating expenses through refrigerant reuse.

Energy efficiency impacts environmental footprint throughout compressor operational life. Maintaining peak system efficiency through regular maintenance reduces electricity consumption and associated carbon emissions from power generation.

Safety Considerations

High-pressure refrigeration systems present several safety hazards. Discharge pressures can exceed 15 bar during extreme conditions, capable of rupturing weak components or causing injury if system piping fails. Proper pressure relief devices protect against excessive pressures from abnormal operating conditions.

Electrical safety requires proper grounding of all system components including the compressor. Ground fault protection devices interrupt power if insulation breakdown creates electrical leakage paths that could cause shock or fire hazards.

Refrigerant safety depends on proper handling procedures. While R134a is classified as non-flammable, displacement of oxygen in confined spaces creates asphyxiation risks. Adequate ventilation and refrigerant detection systems protect technicians working with refrigeration equipment.

Advanced System Integration

Modern refrigeration controls enable sophisticated compressor operation strategies. Adaptive defrost systems optimize defrost frequency based on actual frost accumulation rather than fixed time schedules, reducing energy waste and temperature fluctuations.

Variable-speed condenser fans modulate heat rejection capacity to maintain optimal condensing temperatures across varying ambient conditions. This approach prevents excessive subcooling during cool weather while ensuring adequate capacity during peak summer conditions.

Remote monitoring systems track compressor performance parameters continuously, alerting managers to developing problems before failures occur. Cloud-based analytics compare current operation against historical baselines, identifying performance degradation that indicates maintenance needs.

Economic Analysis

The initial investment in quality compressor components pays dividends through extended operational life and reduced maintenance expenses. While premium compressors command higher purchase prices, lower failure rates and longer service intervals deliver superior total cost of ownership.

Energy efficiency directly impacts operating expenses throughout compressor life. A 10 percent efficiency improvement reduces electricity costs proportionally, generating cumulative savings that often exceed initial equipment costs over typical 10-15 year service lives.

Proper system design and installation maximizes return on investment. Oversized or undersized compressors sacrifice efficiency, while poor installation practices create problems that reduce reliability and increase maintenance expenses.

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Complete Technical Specifications Table

Parameter	Specification
Model	RS80C1E-CAZ-252
Utilization	LBP (Low Back Pressure)
Domain	Freezing Applications
Oil Type and Quantity	Polyolester (POE), 400-450 ml
Horsepower (HP)	1 HP
Refrigerant Type	R134a (HFC)
Power Supply	220-240V, 1 Phase, 50Hz
Cooling Capacity BTU	~8,000 BTU/hr
Motor Type	RSIR (Resistance Start Induction Run)
Displacement	~10.5 cc/rev
Winding Material	Copper
Pressure Charge	Factory sealed hermetic
Capillary	Not included (system component)
Refrigerator Models Compatible	Commercial freezers, ice cream cabinets, blast freezers, frozen food storage, walk-in freezers
Temperature Function	-30°C to -10°C evaporating temperature
With Fan or No	Requires external condenser fan
Commercial or No	Commercial grade
Amperage in Function	~5.0 A running current
LRA	25-30 A (Locked Rotor Amps)
Type of Relay	Current relay or PTC starter
Capacitor or No and Value	No run capacitor (RSIR type)

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Compressor Replacement Options – Same Refrigerant (R134a)

Model	Brand	HP	BTU/hr	Voltage	Application
RST80C1E-PFV-959	Copeland	1 HP	8,000	208-230V/1/60Hz	LBP/Extended Medium
RS80C1E-CAV-252	Copeland	1 HP	8,250	208-230V/1/60Hz	LBP
AE4460Z-FZ1A	Tecumseh	1 HP	7,900	220-240V/1/50Hz	LBP
NTY65CLX	Embraco	1/4-1/3 HP	7,800	220-240V/1/50Hz	LBP
FR8.5G	Danfoss	1 HP	8,100	220-240V/1/50Hz	LBP

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Compressor Replacement Options – Alternative Refrigerants

Model	Brand	Refrigerant	HP	BTU/hr	Voltage	Application
RS80C1E-CAV-224	Copeland	R404A/R407C	1 HP	8,250	208-230V/1/60Hz	LBP
AE4460Y-FZ1A	Tecumseh	R404A	1 HP	8,000	220-240V/1/50Hz	LBP
NJ6226Z	Embraco	R404A	1 HP	8,100	220-240V/1/50Hz	LBP
MTZ64-4VI	Danfoss	R404A/R448A/R449A	1 HP	8,200	220-240V/1/50Hz	LBP
FR8.5CL	Danfoss	R407C	1 HP	7,950	220-240V/1/50Hz	LBP

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Comparative Performance Analysis

Understanding how the RS80C1E-CAZ-252 performs relative to competitive offerings helps technicians and engineers make informed equipment selections. The comparison table below highlights key performance differences:

Feature	Copeland RS80	Tecumseh AE4460Z	Embraco NTY65	Danfoss FR8.5G
Cooling Capacity	8,000 BTU/hr	7,900 BTU/hr	7,800 BTU/hr	8,100 BTU/hr
Energy Efficiency (EER)	7.8	7.6	7.5	8.0
Noise Level	52 dB(A)	54 dB(A)	53 dB(A)	51 dB(A)
Weight	18 kg	17.5 kg	16 kg	18.5 kg
Mounting Pattern	8.0″ x 4.8″	8.0″ x 5.0″	7.5″ x 4.5″	8.0″ x 4.8″
Starting Device	Current relay/PTC	Current relay	PTC	Current relay
Warranty Period	3 years	2 years	3 years	3 years

The Copeland RS80C1E-CAZ-252 demonstrates competitive performance across all metrics, with particular strengths in reliability and global service support availability.

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System Design Considerations

Proper compressor selection requires matching capacity to application load requirements. Undersized compressors run continuously without achieving target temperatures, while oversized units short-cycle with poor humidity control and reduced efficiency.

Calculating accurate cooling loads accounts for product heat load, infiltration through door openings, transmission through insulated walls, internal lighting and equipment heat, and defrost energy input. Professional load calculation software ensures accurate sizing for reliable system operation.

Condensing unit location affects performance significantly. Outdoor installations experience widely varying ambient temperatures that impact capacity and efficiency. Indoor installations benefit from controlled environments but require adequate ventilation to prevent recirculation of condenser discharge air.

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Energy Efficiency Optimization

Energy consumption represents the largest operational expense for most refrigeration systems. Strategic efficiency improvements deliver ongoing savings that accumulate throughout equipment service life.

Variable-speed compressor technology offers substantial efficiency gains compared to fixed-speed units, though reciprocating compressors like the RS80 series utilize on-off cycling rather than speed modulation. Future system upgrades might consider variable-speed scroll or inverter-driven compressors for applications with widely varying loads.

Floating head pressure control adjusts condensing temperature downward during cool ambient conditions, reducing compression ratio and improving efficiency. This strategy requires careful implementation to maintain adequate expansion device pressure differential and oil return velocity.

Heat reclaim systems capture condenser heat for domestic water heating, space heating, or process applications. Recovering waste heat that would otherwise dissipate to ambient improves overall system efficiency while providing useful thermal energy for building operations.

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Technological Advancement Trends

Refrigeration compressor technology continues evolving toward higher efficiency, lower environmental impact, and improved reliability. Understanding emerging trends helps plan for future equipment replacements and system upgrades.

Natural refrigerants including CO2, propane, and ammonia gain market acceptance as regulations restrict high-GWP synthetic refrigerants. While the RS80C1E-CAZ-252 operates with R134a, future replacements may utilize low-GWP alternatives like R290 (propane) or R744 (CO2) depending on regulatory requirements.

Internet of Things (IoT) connectivity enables remote monitoring and predictive maintenance strategies. Sensors track compressor performance continuously, comparing current operation against baseline parameters to identify developing problems before failures occur.

Machine learning algorithms analyze operational data patterns to optimize system controls automatically. Adaptive algorithms adjust setpoints, defrost timing, and capacity modulation to minimize energy consumption while maintaining temperature requirements.

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Professional Installation Guidelines

Quality installation practices dramatically impact long-term reliability and performance. Following manufacturer specifications and industry best practices ensures optimal results.

Brazing copper refrigerant lines requires flowing dry nitrogen through piping during heating to prevent internal oxide scale formation. Scale particles contaminate the system, causing expansion valve blockages and compressor wear that shorten service life.

Evacuation procedures must achieve deep vacuum levels to remove moisture that causes acid formation and copper plating. Triple evacuation with vacuum breaks accelerates moisture removal compared to single-stage evacuation, particularly important for large systems with extensive piping.

Pressure testing before evacuation identifies leaks while the system contains dry nitrogen rather than expensive refrigerant. Standing pressure tests lasting 24 hours verify joint integrity before proceeding with evacuation and charging procedures.

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Professional Recommendations

Field experience with the Copeland RS series demonstrates these compressors deliver reliable performance when properly applied and maintained. The RS80C1E-CAZ-252 suits low-temperature commercial refrigeration applications requiring dependable operation with minimal service requirements.

Technicians should maintain detailed service records documenting operating pressures, temperatures, and amperage readings at each service visit. Trending this data over time reveals performance degradation indicating developing problems before catastrophic failures occur.

Stocking critical replacement components including starting relays, terminal covers with gaskets, and mounting grommets enables rapid repairs that minimize system downtime. For critical applications, maintaining a spare compressor provides insurance against extended outages during compressor failures.

Continuing education on refrigeration fundamentals, new refrigerant technologies, and advanced diagnostic techniques ensures technicians remain current with industry developments. Manufacturer training programs provide valuable insights into proper application and troubleshooting procedures specific to product lines.

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Focus Keyphrase: Copeland RS80C1E-CAZ-252 hermetic reciprocating compressor R134a 1HP low temperature freezing LBP refrigeration 220-240V single phase RSIR motor commercial

SEO Title: Copeland RS80C1E-CAZ-252: 1HP R134a Compressor for Commercial Freezing | Complete Technical Guide

Meta Description: Comprehensive technical guide to Copeland RS80C1E-CAZ-252 hermetic reciprocating compressor. 1HP, R134a refrigerant, LBP freezing applications -30°C to -10°C. Installation, maintenance, replacement options.

Slug: copeland-rs80c1e-caz-252-compressor-technical-guide

Tags: Copeland compressor, RS80C1E-CAZ-252, R134a refrigerant, hermetic reciprocating compressor, LBP compressor, low temperature freezing, commercial refrigeration, 1 HP compressor, RSIR motor, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, RST80C1E-PFV-959, RS80C1E-CAV-252, AE4460Z-FZ1A, NTY65CLX, FR8.5G, refrigeration compressor replacement, Copeland RS series, freezer compressor, ice cream cabinet compressor, walk-in freezer compressor, blast freezer compressor

Excerpt: The Copeland RS80C1E-CAZ-252 represents a specialized hermetic reciprocating compressor engineered for low-temperature refrigeration applications where reliability meets efficiency. This single-phase unit operates on R134a refrigerant and delivers consistent performance in demanding freezing environments ranging from -30°C to -10°C evaporating temperatures. Operating at 220-240V single-phase 50Hz power supply, this unit draws approximately 5 amperes during normal operation, making it suitable for standard commercial electrical systems.

Mbsmpro.com, Compressor, KCJ513HAG-S424H, 1.2 HP, Copeland, R134a, HBP, 12300 Btu/h, 230V, CSCR, Water Cooler, Air Conditioning

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The Heavyweight Champion of HBP: Copeland KCJ513HAG-S424H

In the realm of commercial refrigeration, few names carry as much weight as Copeland. If you are an artisan bricoleur repairing a large water cooler, a bottle chiller, or a specialized air conditioning unit, encountering the KCJ513HAG-S424H means you are dealing with a robust, high-torque machine. This isn’t a small domestic compressor; it is a 1.2 HP beast designed to move heat fast.

The KCJ series (Reciprocating) is legendary for its durability in high-ambient temperatures (common in Tunisia and the Middle East). Unlike rotary compressors that might struggle when the condenser gets clogged with dust, this reciprocating connecting rod design keeps pumping. The “HAG” suffix is your key identifier: ‘H’ stands for High Temperature (HBP), and ‘G’ confirms it is built for R134a gas.

Why 1.2 HP Matters for High Back Pressure (HBP)

This compressor is a “High Back Pressure” specialist. It is designed to operate where the evaporator temperature is relatively high (like +7.2°C for AC or water cooling).

• Cooling Capacity: At standard ASHRAE conditions, it delivers a massive 12,300 Btu/h (approx 3,604 Watts).
• Efficiency: It uses a CSCR (Capacitor Start Capacitor Run) motor configuration. This means it has a start capacitor to get the heavy piston moving and a run capacitor to keep the amperage low (approx 6.5 Amps) while running.

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Technical Specifications: The Data Sheet

Below is the precise data for the KCJ513HAG-S424H.

Feature	Specification
Model	KCJ513HAG-S424H
Brand	Copeland (Emerson)
Nominal HP	1.20 HP (approx. 1 Ton)
Displacement	38.04 cc/rev
Refrigerant	R134a (Tetrafluoroethane)
Application	HBP (High Back Pressure) / AC / Heat Pump
Voltage	220-230V ~ 50Hz
Cooling Capacity	12,300 Btu/h (@ +7.2°C Evap)
Input Power	1374 Watts
Input Current	6.5 Amps
Motor Circuit	CSCR (Capacitor Start & Run)
Start Capacitor	80-100 µF / 230V
Run Capacitor	36 µF / 440V
Oil Type	POE (Polyolester)
Oil Charge	890 ml
LRA (Locked Rotor)	39 A

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Comparison: Copeland KCJ513HAG vs. Tecumseh & Danfoss

When this specific Copeland is unavailable, you need a backup plan. Here is how it compares to other market leaders in the 1 HP+ R134a category.

Compressor	Brand	Nominal HP	Displacement	Cooling (HBP)	Verdict
KCJ513HAG	Copeland	1.2 HP	38.0 cc	12,300 Btu	Best for rugged, high-vibration environments.
TAG4518Y	Tecumseh	1.5 HP	53.2 cc	15,000 Btu	Slightly larger; good upgrade if space permits.
CAJ4511Y	Tecumseh	1 HP	32.7 cc	10,500 Btu	A bit weaker; only use for smaller loads.
MT18	Maneurop	1.5 HP	30.2 cc	13,000 Btu	Excellent alternative, but physically larger/heavier.

Exploitation Note: If you replace a rotary compressor with this reciprocating model, ensure you add a liquid receiver. Reciprocating pumps are less tolerant of liquid slugging than rotaries!

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Exploitation: Installation & Troubleshooting

For the technician, installing the KCJ513HAG requires attention to detail:

1. Capacitor Logic: This unit requires the start capacitor to fire. If you hear a “hum” but no start, check the potential relay (AC85001) and the 80-100µF start capacitor. They are the most common failure points, not the compressor itself.
2. Oil Management: It comes charged with POE oil. If you are retrofitting an old R12 system (rare these days, but possible), you must flush the lines completely. R134a + Mineral Oil = Sludge.
3. Vibration: This is a heavy piston compressor (~22.5 kg). Ensure the rubber grommets are fresh. If you bolt it down too tight without the rubber play, the vibration will crack the copper discharge line within weeks.
4. Heat Management: At 54.4°C condensing temp, this unit works hard. Ensure the condenser fan is clean and spinning at full RPM (usually 1300 RPM for these units).

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Focus Keyphrase:

Copeland KCJ513HAG-S424H Compressor Specs R134a

SEO Title:

Mbsmpro.com, Compressor, KCJ513HAG-S424H, 1.2 HP, Copeland, R134a, HBP, 12300 Btu, 230V

Meta Description:

Detailed specs for Copeland KCJ513HAG-S424H (1.2 HP, R134a). Discover cooling capacity, capacitor values (CSCR), and Tecumseh comparisons for water coolers and AC repair.

Slug:

copeland-kcj513hag-s424h-compressor-1-2hp-r134a-specs

Tags:

Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Copeland Compressor, KCJ513HAG, 1.2 HP Compressor, R134a HBP, Commercial Refrigeration, Water Cooler Repair, KCJ513HAG-S424H, Emerson Climate

Excerpt:

The Copeland KCJ513HAG-S424H is a powerhouse 1.2 HP compressor designed for high-demand cooling. Built for R134a applications like large water coolers and AC units, it delivers 12,300 Btu/h reliability. This guide covers its CSCR electrical setup, 38cc displacement, and how it compares to Tecumseh alternatives.

Copeland QR15M1‑TFD‑501 compressor: technical profile, applications and selection guide

For HVAC professionals, the Copeland QR15M1‑TFD‑501 stands out as a low‑sound, high‑capacity hermetic reciprocating compressor designed for demanding commercial air‑conditioning and refrigeration systems. This article explores its key specifications, strengths, and how to integrate it correctly into new projects or retrofit jobs.​

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Main technical specifications

The QR15M1‑TFD‑501 belongs to the Copeland QR low‑sound series, a four‑cylinder hermetic reciprocating platform engineered for reduced vibration and noise in packaged and split systems. It is typically rated at around 12–12.5 HP, giving contractors solid capacity for medium‑ to high‑temperature applications such as rooftop units, air‑cooled chillers and large ducted systems.​

Key data that installers usually look for include:

• Refrigerant: R22, with mineral‑oil lubrication as standard on QR “R” family models.​
• Nominal cooling capacity: up to about 142 000 Btu/h (≈ 41.6 kW) at 60 Hz, covering a wide range of evaporating conditions.​
• Power supply: 3‑phase 380–420 V / 50 Hz and 460 V / 60 Hz, matching most commercial electrical grids worldwide.​
• Cylinders: 4‑cylinder design with a double scotch‑yoke mechanism, improving balance and running smoothness versus conventional rod‑and‑piston sets.​
• Typical operating envelope: medium‑ and high‑temperature commercial air‑conditioning duty.​

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Construction and performance advantages

Copeland’s QR series is built around a rugged, compact shell with internal suspension, which helps to isolate mechanical vibrations and minimize structure‑borne noise when the compressor is bolted to the base frame. The forged steel crankshaft and precision bearings are designed for high‑speed operation, giving good reliability in systems that cycle frequently or run long duty hours.​

Inside the compressor, pistons, yokes and slide blocks are cast from special alloy aluminium, while piston rings use cast iron to maintain sealing and durability over long runtimes. A low‑foaming mineral oil is specified to stabilize lubrication under fluctuating load conditions, supported by a crankcase heater that reduces refrigerant migration during off‑cycles.​

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Electrical and protection features

The QR15M1‑TFD‑501 uses a three‑phase suction‑gas‑cooled motor, which takes advantage of return gas to remove heat from the windings and improve overall motor life. On TFD models, internal inherent line‑break protection is provided, cutting power if winding temperature or current rises beyond design limits, and some QR variants complement this with an external solid‑state protection module.​

Standard rotalock or stub‑tube connections simplify brazing and servicing, and many units ship with an oil level test valve plus ports positioned for easy access to service gauges. These details may seem minor, but in a tight plant room or rooftop installation, better port layout can save significant time during commissioning and troubleshooting.​

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Typical applications and selection tips

Because of its power rating and low‑sound design, the QR15M1‑TFD‑501 is often selected for:

• Commercial air‑conditioning units such as rooftop packages, air handlers and split systems.​
• Medium‑temperature refrigeration where low noise is important, including supermarkets, cold rooms near occupied spaces or hotels.​
• Retrofit projects replacing older R22 compressors of similar capacity, where matching voltage, displacement and oil type is critical.​

When selecting this model, technicians usually:

• Check that the system is still legally allowed to operate with R22 in their region, or confirm compatibility with any approved drop‑in refrigerant if permitted by manufacturer guidelines.​
• Compare duty‑point capacity (evaporating and condensing temperatures) against Copeland QR performance tables rather than relying only on nominal HP ratings.​
• Ensure correct crankcase heater control and suction line sizing to protect the compressor from liquid slugging on start‑up.​

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QR15M1‑TFD‑501 essential data table

Specification	Typical value / description
Compressor family	Copeland QR low‑sound hermetic reciprocating, 4‑cylinder.​
Model	QR15M1‑TFD‑501.​
Nominal power	About 12–12.5 HP.​
Refrigerant	R22, mineral‑oil lubrication.​
Cooling capacity (60 Hz)	Up to ≈ 142 000 Btu/h (≈ 41.6 kW) depending on conditions.​
Voltage / phase / frequency	380–420 V 3~ 50 Hz; 460 V 3~ 60 Hz.​
Application range	Commercial air‑conditioning and medium‑temp refrigeration.​
Key features	Low‑sound shell, internal suspension, crankcase heater, internal motor protection.​

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Maintenance, reliability and retrofit considerations

Maintaining a QR15M1‑TFD‑501 correctly starts with oil management: technicians should always replace oil with the same viscosity grade mineral oil specified by Copeland and verify oil level after long transport or system leaks. Adequate superheat, properly set expansion devices and clean condenser surfaces are equally important to keep discharge temperatures within safe limits and prevent thermal trips.​

In retrofit scenarios, attention must be paid to any system filters and driers, as long‑serving R22 circuits often contain moisture, acids or debris that can severely shorten compressor life if not addressed before start‑up. Where local regulations phase down or ban R22, owners may consider full system replacement or carefully engineered conversions to modern refrigerants, guided by manufacturer bulletins and local codes.

Copeland ZB50KCE Scroll Compressor Nameplate: How to Read the Label and Choose the Right Polyester Oil

The photo shows the damaged nameplate of a Copeland ZB50KCE scroll compressor, factory‑charged with polyester (POE) oil for medium‑temperature refrigeration. Correctly interpreting this label helps technicians confirm oil, power, voltage and safety limits during service or replacement.​

Compressor identification

The model belongs to the Copeland ZB series, used in commercial cold rooms and process cooling for refrigerants such as R404A, R134a and R22 alternatives. Depending on voltage code (TFD‑551, TFD‑950, etc.), it is sold as a 7 hp medium‑temperature compressor with around 11.9 kW nominal capacity.​

• Model code example: ZB50KCE‑TFD‑551 or ZB50KCE‑TFD‑950.​
• Technology: Hermetic scroll, part of the Summit series designed for higher seasonal efficiency.​

Polyester oil (POE) on the label

The upper part of the label still shows POLYESTER OIL, confirming that the compressor is charged with POE lubricant. Catalogues list oil charges of about 2.6–2.7 l using approved POE types such as RL32‑3MAF or Mobil EAL Arctic 22 CC, depending on the variant.​

• POE oil absorbs moisture quickly, so systems must be evacuated deeply and fitted with quality filter‑driers.​
• Only compatible POE grades should be added; mixing with mineral or alkylbenzene oil is not permitted.​

Technical data with hp and W

The following table compiles typical data for a Copeland ZB50KCE‑TFD‑551 running as a medium‑temperature refrigeration compressor; values may vary slightly by refrigerant and exact model.​

Parameter	Typical value for ZB50KCE*
Nominal power	7 hp​
Nominal capacity	11.9 kW cooling (≈11 900 W)​
Electrical power input	≈7.5–7.9 kW depending on conditions​
Displacement	19.8 m³/h​
Supply voltage	380–420 V/3/50 Hz and 460 V/3/60 Hz (TFD code)​
Maximum operating current	14.6 A​
Locked‑rotor current	≈100 A​
Oil type	POE (e.g. RL32‑3MAF)​
Oil quantity	2.6–2.7 l​
Sound level	≈64 dBA at 1 m​
Net weight	≈59 kg (TFD‑551)​

*Always confirm with the exact data sheet for your compressor code.​

Voltage and operating limits on the sticker

On the lower part of the photographed label, remnants of “Volt 1 380 … Volt 2 460” can be identified, matching the dual‑voltage three‑phase motor used in TFD models. Another line mentions maximum current around 14.6 A, which is the value used to size breakers, contactors and cables.​

• The TFD motor code indicates 380–420 V/3/50 Hz and 460 V/3/60 Hz with internal motor protection.​
• Respecting these limits and using proper overload protection prevents overheating and nuisance trips in commercial installations.​

Practical maintenance notes

For technicians such as those in Mbsmgroup and Mbsm.pro, a faded nameplate is common on older units, but the combination of model code and official catalogue restores all critical information. Creating a new service label with hp, kW, voltage, POE oil type and charge simplifies future troubleshooting and reduces the risk of mistakes during oil changes or retrofits.​

• When replacing or topping up oil, always isolate the compressor, recover refrigerant and work under clean, dry conditions.​
• If in doubt about capacity or application limits, refer to the Copeland ZB range catalogue and selection software before approving a replacement.​

The information you provided describes a Copeland compressor with the model number CRC1-0175-PFU-501, which is a 2-ton, 2.25 HP unit designed for R22 refrigerant. It is compatible with an ESAH-18CH system, which is an 18,000 BTU (1.5-ton) unit with a power input of 1920 watts. Here’s a breakdown of the details:

Compressor Specifications:

• Model: CRC1-0175-PFU-501
• Brand: Copeland
• Cooling Capacity: 2 tons (24,000 BTU)
• Horsepower (HP): 2.25 HP
• Refrigerant Type: R22 (note that R22 is being phased out due to environmental regulations)
• Compatibility: ESAH-18CH (18,000 BTU system)
• Power Input: 1920 watts

Key Notes:

1. R22 Refrigerant: R22 is an older refrigerant that is no longer produced or imported in many countries due to its ozone-depleting properties. If this compressor or system uses R22, you may need to consider retrofitting or replacing it with a system that uses a more environmentally friendly refrigerant like R410A or R32.
2. Compatibility: The compressor is listed as compatible with the ESAH-18CH system, which is an 18,000 BTU (1.5-ton) unit. However, the compressor itself is rated for 2 tons (24,000 BTU). This mismatch in capacity could affect system performance, so it’s important to ensure proper sizing and compatibility.
3. Application: This compressor is likely designed for residential or light commercial HVAC systems.
4. Replacement Considerations: If you’re replacing this compressor, ensure the new unit matches the specifications and is compatible with the existing system. If upgrading to a newer refrigerant, additional modifications may be required.

2

Copeland CRDQ-0200-TFD/PFJ-522 refrigeration compressor:

Technical Specifications

Specification	Details
Branch	Refrigeration
Trademark	Copeland
Machine Type	Refrigeration Compressor
Compressor Type	Piston
Model	CRDQ-0200-TFD/PFJ-522
Capacity	2 HP
Height	550 mm
Weight	29.8 kg
Source	China
Voltage	380V/220V/1ph
Refrigerant Gas	R22
Input Current	28 A

COPELAND 2.5 HP REFRIGERATION COMPRESSOR – CRFQ-0250-TFD-522

Specification	Details
Branch	Copeland
Trademark	Copeland
Machine Type	Refrigeration Compressor
Compressor Type	Piston
Model	CRFQ-0250-TFD-522
Capacity	2.5 HP
Height	550 mm
Weight	29.8 kg
Source	China
Voltage	380/220V/1ph
Gas Type	R22
Input Current	27 A

Copeland compressor can be used for low/medium and high temperature. These compressors are from Copeland China factory. 

DWM Copeland™ Compressors are suitable
For a wide range of applications either in the form of single compressors, condensing units or as multi-compressor equipment

Cooling Capacity at Standard Condition 2.67kWR404A, Evaporating -35° C, Condensing 40° C, Suction Gas Return 20° C, Sub cooling 0K

Mechanical Data
Number of cylinders2.0Displacement @ 50 Hz, cu. M/h18.2
Bore/Stroke, mm60.4/36.5Length/Width, mm470/330
Height, mm385.0Net Weight, kg87.0
Gross Weight, kg93.0Suction, inch1 1/8
Discharge, inch5/8Oil Quantity, l2.0
Frequency Range, Hz25 – 60Base mounting (hole dia), mm295 x 279 (14.0)
Sound Pressure @ 1m, dBA63.1Sound Power, dBA74.1
High Side PS, bar(g)28.0Low Side PS, bar(g)22.5
Electrical Data
Maximum Operating Current, A9.5Locked Rotor Current, A68.5
Default Enclosure ClassIP 54 (IEC 34)
Accessories
Mounting Springs4
Additional Cooling1 or 2 ways water Coil
Crankcase Heater70W Internal
Additional Cooling70W Vertical Air Flow Fan
Additional Cooling25W Horizontal Air Flow Fan
Adapter KitFor Parallel Operation
InverterControl Techniques SKB 3400750

odel	nom HP	Displace m3/hr	Evaporating temperature (Capctiy R404A/R507)									Electrical amp s/ph
			-35	-30	-25	-20	-15	-10	-5	0	5	rla*	mcc*	l. r. a
DKSJ-15X-EWL	1.5	6.3	937	1260	1635	2075	2595	3200	3905			3.2	3.5	20.4
DLE-20X-EWL	2	9.9	871	1430	20700	2810	3665	4655	5805	7130	8655	4.6	5.7	37.6
DLJ-30X-EWL	3	14.5	1770	2540	3425	4460	5665	7070	8705	10590	12760	6.7	8.07	53
DLL-40X-EWL	4	18.1	2273	3330	4558	5996	7670	9615	11870	14460	17460	7.9	9.5	68.5
DLSG-40X-EWL	4	22.5	2980	4175	5625	7300						7.4	8.9	53.4
D2SC-65X-EWL	6.5	26.9		5100	6750	8700	10900	13500	16400	19800	23700	12.7	16.2	85.3
D3SA-75X-AWM	7.5	32.2		5600	7650	10500	12850	16100	19800	24100	28900	14.2	17.9	82
D3SC-100X-AWM	10	38		7150	9500	12250	15500	19300	23800	29000	35000	16.8	21.6	106
D3SS-150X-AWM	15	49.9		10350	13550	17200	21400	26300	32000	38500	46000	23.2	30.2	125
D4SA-200X-AWM	20	56		10650	14250	18400	23200	28800	35000	42500	51000	24.2	30.5	160
D4SH-250X-AWM	25	70.8		13300	17600	22600	28300	3500	42500	51500	62000	31.1	40.1	192
D4SJ-300X-AWM	30	84.7		15800*	21200	27400	34500	43000	52500	64000	76500	36.2	47.7	218
D6SH-350X-AWM	35	106		19600*	26000	33500	42000	52000	63500	76500	92000	49.6	62.4	284
D6SJ-400X-AWM	40	127		23100*	30500	39000	49000	60500	74000	89000	1E+05	55.2	71.8	347
D6SK-500X-AWM	50	151.8		27200*	36500	47000	59500	73500	90500	109500	1E+05	71	94.7	415
D8SJ600XB-1	60	181		33000	44000	56500	71500	88500	1E+05	13500	15800	84	107	544
DKL20X-EWL	2	7.4	940	1330	1790	2330	2950	3700	4500			2.6	3.83	20.4
DKSL20X-EWL	2	9.1	1390	1860	2410	3060	3820	4700	5700			3.2	4.7	20.4
DLL30X-EWL	3	18.2	2268	3293	4503	5918						5.5	7.3	53
D2SA-45X-EWL	4.5	22.4	3160*	4300	56500	7250	9100	11250	13700			7.4	11.4	68.5
D3SA-75X-AWM	7.5	32.2		5600	7650	10050	12850	16100	19800	24100	28900	10.5	17.9	82
D3SC-75X-AWM	7.5	38	5013*	6800	9000	11700	14850	18600	22900			12.4	18.7	82
D3SS-100X-AWM	10	49.9		9950	12900	16300	20300	24900	30500			16.3	26	109
D4SF-100X-AWM	10	56		11250	14600	18500	23200	28700	35000			16.9	27.1	105
D4SL-150X-AWM	15	70.8		14700	18900	23900	29700	36500	44000			21.7	35.6	156
D4ST-200X-AWM	20	84.7		17200	22400	28500	35500	44000	53500			24.2	42.4	175
D6SL-250X-AWM	25	106		21400	27700	35000	43500	53000	64000			31.4	56.5	199
D6ST-320X-AWM	32	127		25000	32000	40500	50500	62000	75000			39.2	62.9	255
D6SU-400X-AWM	40	151.8		29600	38500	49000	61500	75500	92000			47.3	78	304
D8SJ-450X-BWM	45	181		35500	46500	59000	74000	91000	1E+05			53.3	90.8	458

CO-CR18K6-PFJ-525, CO-CR18K6-TFD-525, CO-CR24K6M-PFZ-102, CO-CR24K6M-TFD-102, CO-CR34K6M-PFZ-102, CO-CR37K6M-PFZ-102, CO-CR37K6M-TFD-102, CO-CR53KQM-TFD-202, CO-CR57KQM-TFD-202, CO-CR62KQM-TFD-202

The Copeland CR62KQM-TFD-202 is a hermetic reciprocating compressor designed for refrigeration applications. Here are its key specifications and features:

Specifications

• Model: CR62KQM-TFD-202
• Horsepower (HP): 5 HP
• Refrigerant: R22
• Voltage Rating: 380-420 V, 3-phase, 50 Hz
• Cooling Capacity: Approximately 61,300 BTU/hr
• Input Power: 6,075 Watts
• Rated Load Amps (RLA): 8.8 A
• Locked Rotor Amps (LRA): 55 A
• Energy Efficiency Ratio (EER): 10.10

Performance Characteristics

This compressor is engineered for high efficiency and reliability, making it suitable for various refrigeration applications, including cold storage and commercial refrigeration systems. It is optimized to handle high ambient conditions (up to 55°C) and has strong liquid handling capabilities.

Additional Features

• Design: Rugged reciprocating technology.
• Mounting Configuration: Multiple foot mounting configurations available.
• Certifications: ULand and IECEE certified.

The CR62KQM-TFD-202 is a robust choice for those seeking reliable refrigeration solutions in demanding environments.

The compressor model CRAQ-0150-PFV-501 is a Hermetic compressor manufactured by Copeland. It is a 1-phase, 208/230V compressor designed for air conditioning applications. The compressor uses HCFC or R-22 refrigerant and operates at 60Hz.

Here are some of the key specifications of the CRAQ-0150-PFV-501 compressor:

• Capacity: 18,300 – 23,900 BTU/hr
• Power: 1,910 – 1,520 W
• Current: 8.8 – 7.0 Amps
• EER: 9.6 – 15.7 BTU/Wh
• Mass Flow: 268 – 308 lbs/hr
• Sound Power: 72 – 77 dBA
• Vibration: 1.7 – 2.7 mils (peak-peak)
• Displacement: 2.00 in^3/Rev
• Overall Length: 9.44 in
• Overall Width: 9.13 in
• Overall Height: 13.56 in
• Mounting Length: 7.50 in
• Mounting Width: 7.50 in
• Mounting Height: 13.94 in
• Suction Size: 5/8 in
• Discharge Size: 3/8 in
• Initial Oil Charge: 55 oz
• Oil Recharge: 51 oz
• Net Weight: 61.0 lbs
• Internal Free Volume: 345.0 in^3

This compressor is no longer in production and has been replaced by newer, more efficient models. However, it is still a popular choice for replacement applications due to its reliability and performance.