Refcomp SP6H4000 SP6H400E R22 Reciprocating Semi-Hermetic Compressor

• Dynamic Capacity Control & Load Matching: Engineered for demanding commercial refrigeration systems, this reciprocating semi-hermetic compressor incorporates a solenoid-driven 3-stage energy regulation system (100%, 66%, and 33%). By matching the compressor displacement directly to fluctuating system cooling loads, it reduces start-stop frequency, minimizes electrical stress, and optimizes power consumption under part-load operating conditions.
• Advanced Motor & Gas Flow Architecture: Built with internal flow channels that pass cold suction gas across the motor before compression, the reciprocating semi-hermetic compressor maintains lower operating motor temperatures. This multi-refrigerant motor configuration supports dual-frequency operation (400V/50Hz and 460V/60Hz PW) and operates stably with R22, R407C, R134a, R404A, and R507.
• Heavy-Duty Mechanical Drive Train: The 6-cylinder layout utilizes a dynamically balanced crankshaft, wear-resistant journal bearings, and optimized piston-connecting rod linkages. This rugged mechanical construction minimizes gas pulsation, absorbs operational vibration, and extends the mechanical service life of the reciprocating semi-hermetic compressor during continuous duty.
• Integrated Suction Filtration & Safety Protection: To protect internal moving parts from system debris, the compressor includes an externally accessible high-density suction filter screen designed for easy inspection and replacement. An internal safety relief valve balances high and low suction pressures during sudden overpressure conditions, complemented by an INT6902 electronic protection module that continuously monitors motor thermal status.

• Commercial HVAC & Fluid Chillers: Suitable for central commercial air conditioning plants and fluid chilling systems requiring flexible multi-step power control.
• Medium/High-Temperature Cold Rooms: Ideal for fresh food storage facilities, agricultural holding rooms, and temperature-controlled distribution centers.
• Industrial Process Cooling: Designed for industrial cooling loops requiring continuous operation, stable oil lubrication, and low vibration output.
• Supermarket Parallel Compressor Racks: Well-suited for multi-compressor rack configurations subjected to frequent daily cooling demand swings.

Coolstart is a modern, large-scale refrigeration enterprise with over 20 years of industry experience. We specialize in supplying semi-hermetic compressors, scroll compressors, screw compressors, reciprocating compressors, rotary compressors, cold storage equipment, quick-freezing systems, and ice-making machinery. Supporting full-category OEM and ODM customization, Coolstart delivers reliable refrigeration products to clients across the United States, Russia, the United Kingdom, the United Arab Emirates, Saudi Arabia, and other global markets through technical innovation and dedicated service.

Our technical team provides customized selection support and system integration guidance for commercial and industrial refrigeration projects. Send us your project requirements to receive complete product recommendations and a formal quotation within 8 hours.

Please include the following details in your inquiry:

• Model & Quantity
• Preferred Refrigerant
• Power Supply
• Operating Conditions
• Specific Project