Refcomp SP Series SP4H3500 SP4H350E Semi Hermetic Compressor
Designed for working pressures up to 28 bar, this semi hermetic reciprocating compressor features optimized internal gas channels to minimize flow resistance and maintain superior compression efficiency.
- Step Capacity Control: Supports 100% and 50% capacity regulation stages, allowing flexible adaptation to changing refrigeration loads and reduced operating costs.
- Durable Mechanical Construction: Equipped with dynamically balanced crankshaft, wear-resistant sliding sleeve bearings, and optimized connecting rods designed for continuous service life of 50,000 to 80,000 hours.
- Integrated Protection & Accessories:
- INT69B2 electronic motor protection module
- 360° rotatable suction and discharge shut-off valves
- Built-in high-density suction gas filter
- Internal high/low pressure safety relief valve
- Multi-Refrigerant Versatility: Engineered for broad working conditions, supporting standard refrigerants including R22, R134a, R404A, R407C, and R507 across 50Hz and 60Hz systems.
| Model | SP4H3500, SP4H350E |
|---|---|
| Rated Power | 35HP/26.1KW |
| Exhaust Volume (50Hz/60Hz) | 102.9/123.5 m³/hr |
| Refrigerant Type | R22, R407C, R134a, R404A, R507 |
| Weight | 238KG |
| Oil Charge | 3.7L |
| Voltage | 400V/3/50Hz, 460V/3/60Hz PW |
| Starting Current PW/DOL | 178/290A |
| Max Operating Current | 56A |
Accurate selection requires specifying required cooling capacity, operating evaporating and condensing temperatures, refrigerant type, power supply voltage/frequency, and application details.
The factory-installed INT69B2 module continuously monitors motor winding temperature to prevent thermal overload and electrical damage under severe operating conditions.
Regularly inspect the oil level through the sight glass, verify crankcase heater energization before cold startup, monitor operating current, and check suction filter pressure drops.
Both suction and discharge shut-off valves feature 360° rotation capability, enabling flexible connection angles and simplifying pipeline layout in compact machine frames.
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