Quantech QTC4 STYLE A Series Installation Operation & Maintenance page 7

Air-cooled screw liquid chillers with variable speed drive, 150 - 500 tons, 525 - 1750 kw, 2 compressor, 60 hz
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FORM QTC4-NM1
ISSUE DATE: 4/2/2018
SECTION 6 - COMMISSIONING ............................................................................................................................91
Preparation ..................................................................................................................................................... 91
Inspection .............................................................................................................................................91
Refrigerant Charge ................................................................................................................................91
Correct System Refrigerant Charge ...................................................................................................... 91
Service and Oil Line Valves ................................................................................................................... 91
Compressor Oil .....................................................................................................................................91
Fans .....................................................................................................................................................92
Isolation / Protection ..............................................................................................................................92
Control Panel .........................................................................................................................................92
Power Connections ...............................................................................................................................92
Grounding ..............................................................................................................................................92
Water System ........................................................................................................................................92
Flow Switch ...........................................................................................................................................92
Temperature Sensor(s) ..........................................................................................................................92
Programmed Options ............................................................................................................................92
Programmed Settings ...........................................................................................................................92
Date and Time .......................................................................................................................................92
Start/Stop Schedule ..............................................................................................................................93
Setpoint and Remote Offset .................................................................................................................. 93
First Time Start Up ......................................................................................................................................... 93
Interlocks ...............................................................................................................................................93
Unit Switch ............................................................................................................................................93
Startup ...................................................................................................................................................93
Oil Pressure ...........................................................................................................................................93
Loading ..................................................................................................................................................93
Condenser and Fan Rotation ................................................................................................................ 93
System Charge ......................................................................................................................................93
General Operation ......................................................................................................................................... 93
Operation in Sub-freezing Conditions ................................................................................................... 94
Unit Maintenance and Shutdown in Sub-freezing Conditions .............................................................. 94
SECTION 7 - OPERATION .....................................................................................................................................95
Operating Controls ......................................................................................................................................... 95
Unit Switch ............................................................................................................................................95
Keypad ..................................................................................................................................................95
Keypad Data Entry Mode ......................................................................................................................96
Display ...................................................................................................................................................96
Anti-recycle Timer ..................................................................................................................................96
Evaporator Pump Control ......................................................................................................................96
Evaporator Heater Control .................................................................................................................... 96
Alarms ...................................................................................................................................................97
Chiller Run Contact ...............................................................................................................................97
Flow Switch Control ...............................................................................................................................97
Remote Run / Stop ................................................................................................................................97
Basic Operating Sequence ............................................................................................................................. 97
Start Sequence and Loading ................................................................................................................. 97
Unit Warning ................................................................................................................................................... 97
Unit Warning Operation .........................................................................................................................97
Low Battery Warning .............................................................................................................................97
QUANTECH
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