Carrier 61WG 020 Installation, Operation And Maintenance Instructions page 54

Pro-dialog water-cooled/condenserless liquid chillers/water-sourced heat pumps with or without integrated hydronic module

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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: Calculate the cooler pressure drop in performance data table (in the product data literature) to determine

total litres 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 .......................................................................

Suction pressure, circuit A ........................................................... Suction pressure, circuit B* ......................................................

Discharge pressure, cicuit A ........................................................ Discharge pressure, cicuit B* ...................................................

Suction temperature, circuit A .................................................... Suction temperature, circuit B* ...............................................

Discharge temperature, circuit A ................................................ Discharge temperature, circuit B* ...........................................

Liquid line temperature, circuit A............................................... Liquid line temperature, circuit B* .........................................

Compressor oil pressure A1** .................................................... Compressor oil pressure B1** .................................................

Compressor oil pressure A2** .................................................... Compressor oil pressure B2** .................................................

if available and installed

** if installed

NOTES:

.................................................................................................................................................................................................................

Condenser LWT ........................................................................

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