Technical information

UGH021/0301 VL Series Portable Chillers, 2 to 40 Tons
Page: 3
TABLE OF CONTENTS
1.0 GENERAL 5
1.1 Introduction 6
1.2 Unit location for air cooled models 6
1.3 Unit location for water cooled models 6
1.4 Efficiency 6
1.5 Safety 7
1.6 Clean air act 7
1.7 Miscellaneous 7
Chiller features identified 8
2.0 INSTALLATION 9
2.1 General 10
2.2 To and From process connections 10
2.3 Water supply connection 11
2.4 Air cooled condenser 11
2.4 Water cooled condenser 13
2.5 Electrical connection 13
3.0 OPERATIONS 17
3.1 General 18
3.2 Start up/operations procedure 18
3.3 Instrument operation 23
3.4 Shut down procedure 26
4.0 TROUBLESHOOTING 27
4.1 Sensors 28
4.2 Process pump 28
4.3 Compressor 28
4.4 Blower/fan 28
4.5 Low flow 28
4.6 High Pressure 29
4.7 Low pressure 29
4.8 Freezestat 29
4.9 Oil pressure 30
4.10 Crankcase heater 30
4.11 Electronics 30
5.0 MAINTENANCE 31
5.1 Warranty service procedure 32
5.2 Periodic preventative maintenance 32
5.3 Special maintenance 33
5.4 Solenoid valve service 34
5.5 Pump seal service 36
5.6 Checking the refrigerant charge 39
5.7 Proper cleaning procedure for brazed plate evaporators 40
6.0 COMPONENTS 43
6.1 Water system 44
6.2 Refrigeration system 44