41
Voltage imbalance is less than 2%
WARNING: Do not start unit if voltage imbalance is greater than 2%. Contact local power company for assistance.
All incoming power voltage is within rated voltage range
Check cooler water loop
Water loop volume = ................................. (litres)
Calculated volume = ................................. (litres)
Proper loop volume established
Proper loop corrosion inhibitor included ................litres of ...........................
Proper loop freeze protection included (if required) .........................litres of ..............................
Piping includes electric heater tape, if exposed to the outside
Inlet piping to cooler includes a 20 mesh strainer with a mesh size of 1.2 mm (unit without pump)
Check pressure drop across the evaporator
Entering evaporator =
............................... (kPa)
Leaving evaporator = ................................ (kPa)
(Leaving - entering) = ............................... (kPa)
WARNING: Plot cooler pressure drop on performance data chart (in product data literature) to determine total liters per
second (l/s) and find unit’s minimum flow rate.
Total l/s = ..................................................
l/s / nominal kW = .....................................
Total l/s is greater than unit’s minimum flow rate
Total l/s meets job specified requirement of
............................................(l/s)
Perform TEST function (indicate positive result):
WARNING: Once power is supplied to the unit, check the display for any alarms, such as phase reversal. Follow the TEST
function instructions in the Controls and Troubleshooting literature (follow the procedure in the Controls IOM).
Be sure that all service valves are open, before beginning the compressor test section.
To start the unit
WARNING: Be sure that all service valves are open, and all pumps are on before attempting to start this machine. Once all
checks have been made, move the switch to “LOCAL” or “REMOTE” from “OFF”.
Unit starts and operates properly
Temperatures and pressures
WARNING: Once the machine has been operating for a while and the temperatures and pressures have stabilized, record the
following:
Evaporator EWT
............................................................................. Ambient temperature ...................................................................
Evaporator LWT
.............................................................................
Condenser EWT
..........................................................................
Condenser LWT ..........................................................................
Suction pressure
.............................................................................. Discharge pressure ......................................................................
Suction temperature
........................................................................ Discharge temperature .................................................................
Liquid line temperature ...................................................................
Compressor oil pressure A1* .......................................................... Compressor oil pressure A2* ......................................................
* if installed
NOTES:
.................................................................................................................................................................................................................
.................................................................................................................................................................................................................
Содержание BW10 020-090
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