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Refcomp SP4LN1200 SP4LN120E Reciprocating Semi Hermetic Compressor for Water Chiller
Product Description
Solenoid-Controlled Energy Regulation (100% / 50%)
Engineered with a solenoid-driven capacity control system, this reciprocating semi hermetic compressor offers 100% and 50% capacity steps. By modulating compressor displacement to match fluctuating thermal loads, the system eliminates unnecessary motor cycling, stabilizes suction pressure, and optimizes power consumption during part-load operating periods.
High-Precision Floating Bearing System
Utilizing advanced floating sleeve journal bearings combined with specialized thrust washers, this reciprocating semi hermetic compressor minimizes axial and radial shaft wear. The optimized lubrication geometry distributes oil film pressure dynamically, delivering low-noise operation and extending mechanical design life up to 60,000-80,000 service hours.
360° Rotatable Shut-Off Valves
Equipped with high- and low-pressure rotatable shut-off valves, the compressor allows full 360° piping orientation during system installation. This flexible flange arrangement simplifies connection in compact mechanical rooms, reduces installation time, and prevents physical stress on connecting suction and discharge piping.
Integrated Internal Safety Relief Valve
To protect against operational overpressure spikes, an internal differential safety valve connects the high-pressure discharge zone directly to the low-pressure suction casing. The valve opens automatically to balance internal pressure during severe system anomalies, safeguarding the compressor body from structural hazards.
Application
Commercial Walk-In Freezers & Cold Rooms - Ideal for supermarket cold rooms, commercial frozen storage facilities, and food holding freezers.
Blast Freezing & Fast Chilling Equipment - Suitable for rapid food processing, blast freezing tunnels, and fast-chilling production lines.
Cold Storage Distribution Logistics - Designed for central refrigerated distribution hubs and cold chain logistic warehouses.
Industrial Low-Temperature Process Chilling - Well-suited for pharmaceutical temperature control, chemical processing, and low-temperature fluid chilling.
Product Image
Technical Parameters
Model
SP4LN1200/SP4LN120E
Rated power
12HP/8.9KW
Exhaust volume(50/60Hz)
56/67.2 m³/hr
Standard motor
400V/3/50Hz,460V/3/60Hz PW
Weight
146KG
Oil Charge
2.6L
Starting current PW/DOL
75/125A
Max operating current
27A
Oil lubrication method
Splash lubrication
Company Introduction
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.
FAQ
Q1: How does the floating sleeve bearing design improve long-term mechanical reliability?
A1: Floating sleeve bearings create a dynamic oil buffer around the journal, reducing localized metal friction, dampening radial shaft vibration, and preventing seizure under heavy loads.
Q2: What control sequence is required when utilizing Part-Winding (PW) motor startup?
A2: A time delay relay (typically set to 0.5 to 1.0 second) should energize the second winding contractor immediately after the first, stepping down peak inrush current from 125 A to 75 A.
Q3: What is the correct oil sight glass level during stable compressor operation?
A3: Oil level should be maintained between 1/4 and 3/4 of the sight glass during steady running, ensuring sufficient crankcase oil reserves without excess oil carryover into the system.
Q4: Is the SP4LN1200 compatible with R404A and polyolester (POE) lubricants?
A4: Yes, the unit is fully compatible with R404A, R507, R134a, R407C, and synthetic ester lubricants formulated for HFC systems.
Q5: What lead time can be expected for custom voltage or OEM packaging orders?
A5: In-stock sample units ship within 3 business days, while customized factory batch production orders are completed and dispatched within 10 to 15 working days.
Request a Technical Quotation
Whether building new multi-compressor refrigeration racks or upgrading commercial cold rooms, Coolstart provides factory-direct model selection, technical matching, and competitive pricing within 8 hours.
Please share the following parameters with your inquiry:
Target Model & Quantity
Refrigerant Type
Power Grid Specifications
Operating Conditions
Specific System or Rack Integration Requirements
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2001
Total Annual:
50000000-10000000
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Shenzhen Coolstart Refrigeration Equipment Co., Ltd. is a modern, professional refrigeration manufacturer with over 20 years of industry experience. We focus on the professional production and global sales of high-performance refrigeration equipment, serving as a reliable and cost-effective suppl...
Shenzhen Coolstart Refrigeration Equipment Co., Ltd. is a modern, professional refrigeration manufacturer with over 20 years of industry experience. We focus on the professional production and global sales of high-performance refrigeration equipment, serving as a reliable and cost-effective suppl...
