Shenzhen Coolstart Refrigeration Equipment Co., Ltd
                                                                                                           
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Refcomp SP6L4000 SP6L400E 40HP Semi-Hermetic Compressor

Price Negotiable
Price: Discussed
MOQ: 1
Delivery Time: 1 Month
Brand: Refcomp
Product Description
Refcomp SP6L4000 SP6L400E 40HP Semi-Hermetic Compressor
Product Features
  • Three-Stage Energy Adaptation
    Equipped with 100%, 66%, and 33% step capacity control, this semi-hermetic compressor dynamically adjusts cooling output to match fluctuating low-temperature demands while maximizing seasonal efficiency.
  • 6-Cylinder High-Displacement Flow
    Engineered with direct gas suction channels and six cylinders to deliver up to 185.3 m³/h displacement, minimizing internal pressure drop and turbulence during compression.
  • Heavy-Duty Drive & Thermal Protection
    Constructed with a 28 bar pressure-rated housing, dynamically balanced crankshaft, wear-resistant sleeve bearings, and an INT69B2 thermal module for long-term operational safety.
  • Standard Service & Connection Package
    Features 360° rotatable suction (54 mm) and exhaust (42 mm) shut-off valves, an internal suction gas filter, and a factory 230V / 150W crankcase heater on this semi-hermetic compressor.

Product Image
Refcomp SP series Semi-Hermetic Compressor

Technical Specifications
Model SP6L4000, SP6L400E
Rated Power 40HP/29.9KW
Exhaust Volume (50Hz/60Hz) 154.4/185.3 m³/hr
Refrigerant Type R22, R407C, R134a, R404A, R507
Weight 247KG
Oil Charge 4.2L
Voltage 400V/3/50Hz, 460V/3/60Hz PW
Starting Current PW/DOL 201/330A
Max Operating Current 75A
Refcomp SP6L4000 technical diagram

Frequently Asked Questions
Q1: What suction line slope and trap recommendations prevent oil logging when running this semi hermetic compressor at 33% partial load?
A1: Horizontal suction lines should slope toward the compressor at a minimum gradient of 1%, and vertical risers must be sized to maintain at least 5 m/s gas velocity during 33% step operation to ensure oil returns to the 4.2 dm³ sump.
Q2: What causes high discharge gas temperatures during low-temperature operation, and how can it be mitigated?
A2: Elevated discharge temperatures occur from excessive suction superheat or extreme compression ratios; installing an optional head cooling fan or liquid injection kit keeps operating temperatures within safe limits.
Q3: How should electrical protection relays be set for Part-Winding (PW) startup on a 40 Hp motor?
A3: Set the Part-Winding delay relay between 0.5 and 1.0 second, sizing thermal overload breakers to protect the 75 A maximum operating current while accommodating the initial 201 A starting inrush.
Q4: What routine maintenance protocol applies to the internal suction filter and oil sight glass during annual shutdowns?
A4: Isolate the compressor, recover remaining refrigerant, remove the suction valve flange to clean the high-density screen of debris, and check sight glass seals before recommissioning.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Coolstart Refrigeration Equipment Co., Ltd
Location Room 1801, Building 1, Kangli city, No. 66 Pingji Road, Longgang District, Shenzhen, Guangdong,China
Contact Person Lynn

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