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UGH020/0301 VL Series Portable Chillers, 0.25 to 1.5 Tons
TABLE OF CONTENTS
1.0 GENERAL 5
1.1 Unit location 6
1.2 Efficiency 6
1.3 Safety 6
1.4 Clean air act 6
1.5 Miscellaneous 7
2.0 INSTALLATION 9
2.1 General 10
2.2 To and From process connections 10
2.3 Unit drain 11
2.4 Air-cooled condenser 11
2.5 Electrical connection 12
3.0 OPERATIONS SEQUENCE 13
3.1 General 14
3.2 Start up / operations procedure 14
3.3 Instrument operation 15
3.4 Shut down / disconnect sequence 18
4.0 TROUBLESHOOTING 19
4.1 Unit will not start 20
4.2 Pump will not start 20
4.3 Compressor will not start 20
4.4 Unit shuts down on high pressure switch 20
4.5 Unit shuts down on low pressure switch 20
5.0 MAINTENANCE 23
5.1 Warranty service procedure 24
5.2 Periodic preventative maintenance 24
5.3 Special maintenance 25
5.4 Pump repair 25
6.0 COMPONENTS 27
6.1 Water system 28
6.2 Refrigeration system 28
7.0 RELATED DRAWINGS 29
7.1 Electrical (typical) 30
7.2 Circuit schematic 31
8.0 APPENDIX 33
8.1 Specifications 34
8.2 Operations below 48°F 35
8.3 Water quality control 37
8.4 Inhibited propylene glycol 37
8.5 Chiller capacity and derate chart 39
8.6 Pressure - temperature chart for R-22 40
8.7 Engineering formulas 41
8.8 Spare parts list 42