Shenzhen Coolstart Refrigeration Equipment Co., Ltd
                                                                                                           
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25 Years
Since 2001
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Refcomp SRC-S(W)-503 SRC-S-503-L4 R407C Screw Refrigertion Compressor

Price Negotiable
Price: Discussed
MOQ: 1
Delivery Time: 1 Month
Brand: Refcomp
Product Description
Refcomp SRC-S(W)-503 SRC-S-503-L4 R407C Screw Refrigeration Compressor
Product Features
  • Advanced Rotor Technology: Asymmetrical rotor profiles optimize gas compression pathways to deliver exceptional volumetric efficiency.
  • Multi-Stage Oil Separation: Built-in centrifugal oil separator achieves up to 99.85% efficiency, reducing oil circulation in heat exchangers to preserve system capacity.
  • Heavy-Duty Bearing System: High-precision angular contact and thrust bearings withstand heavy mechanical loads, providing reliable continuous operation under high pressure ratios.
  • Comprehensive Safety Protection: Equipped with internal safety valve and INT69 SNY module featuring 6 PTC thermistors for real-time motor temperature and phase monitoring.

Product Image
Refcomp SRC-S Screw Compressor unit showing industrial design and connections

Technical Specifications
Model SRC-S(W)-503 SRC-S-503-L4
Standard Motor Power 180HP/135KW
Displacement (50/60Hz) 562/674 m³/h
Weight 1010KG
Oil Charge 19L
Cooling Capacity Regulation 100%,75%,50%,25% (stepless 100%-25%)
Electrical Heater 275W-230V-50/60Hz
Standard Motor 400/3/50Hz-460/3/60Hz
LRA Y/Δ 453/1333A 543/1645A
Technical diagram of Refcomp SRC-S compressor components and connections

Frequently Asked Questions
What technical details should be provided when selecting this HVAC screw compressor for a system retrofit?
Please specify your required cooling capacity, evaporating and condensing temperatures, refrigerant choice, and site power supply specifications.
What piping requirements should be followed during physical installation?
Align connection lines with the 80.0 mm discharge and 105.5 mm suction ports, install rigid vibration absorbers, and confirm discharge check valve operation to prevent refrigerant backflow upon shutdown.
What essential checks are required before initial commissioning?
Verify that the 19 dm³ oil charge level is within sight glass range, confirm correct control module wiring for the INT69 SNY unit, and ensure the crankcase heater has energized for adequate time before startup.
What routine maintenance practices ensure long-term operational reliability?
Inspect the 100 µm suction filter for pressure drop, check oil cleanliness and differential pressure, and verify motor overload safety circuits during scheduled maintenance cycles.

Get in Touch

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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