Wesper SLS 1202 User Manual

69 pages

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English

Air cooled chillers and heat pumps with screw compressors

Installation and maintenance manual

IOM SLS407-N.1GB

Date : November 2005

Supersedes : None

SLS 1202 ÷ 4004

SLH 1202 ÷ 3804

262



916 kW

287



853 kW

Table of Contents2
Foreword3
Introduction3
Warranty3
Emergency Stop/Normal Stop3
An Introduction to the Manual3
Safety4
Definitions4
Access to the Unit5
General Precautions5
Precautions against Residual Risks5
Precautions During Maintenance Operations6
Safety Labels7
Safety Regulations9
Transport, Lifting and Positioning12
Inspection12
Lifting12
Anchoring13
Storage13
Installation14
Positioning of the Unit14
Spring Isolator Installation14
External Hydraulic Circuit16
Hydraulic Connection17
Draining the Defrosting Waste Water (for Heat Pump Unit Only)17
Power Supply18
Electrical Connections18
Connecting the Plate Type Evaporator's Temperature Sensors20
Connecting the Temperature Sensor of Coupled Units' Manifold (SLS 3804-4004/SLH 2804-3804)21
Start-Up22
Preliminary Check22
Checking the Operation23
Delivery to the Customer23
Operation24
General Informations24
Keyboard - Display Terminal Unit24
Functions / Keys / Configurations26
General Description29
Introduction29
General Specifications29
Compressors29
Refrigerant Circuits29
Water Heat Exchanger30
Air Heat Exchanger30
Fans30
Power Supply and Control System33
Chiller Control34
Accessories34
Technical Data35
Pressure Drops35
Technical Data37
Electrical Data45
Overall Dimensions54
Service Spaces61
Maintenance62
General Requirements62
Planned Maintenance62
Refrigerant Charge63
Compressors63
Condenser's Coils63
Fans64
Dehydrating Filter64
Sight Glass64
Thermostatic Expansion Valve64
Evaporator64
Troubleshooting65
Spare Parts67
Spare Part List67
Oil for Compressors67
Wiring Diagrams67
Dismantling, Demolition and Scrapping68
Generalities68

Questions and Answers:

B
Brianna RobertsonAug 18, 2025
Why is my Wesper SLS 1202 Chiller making excessive noise?
- M
  Mrs. Ellen BenitezAug 18, 2025
  Excessive noise in your Wesper Chiller can stem from several sources. Start by checking the clamping brackets of the lines to address potential vibration. If there is a whistler emitted by the thermostatic expansion valve, refill the chiller. Also, check the dehydrating filter. A noisy compressor may require replacement. Finally, ensure the compressor’s locknuts are tightened to address seized bearings.

Wesper SLS 1202 Specifications

General

Brand	Wesper
Model	SLS 1202
Category	Chiller
Language	English

Wesper SLS 1202 User Manual

Table of Contents

Questions and Answers:

Wesper SLS 1202 Specifications