Carrier 30KAV-ZE Series - Page 53

Unit start-up
a. The oil heaters have been energised for at least 24 hours
b. All the discharge and liquid valves are open
c. All suction valves are open, if tted
d. All the oil line valves and economiser valves (if tted) are open
e. Any leaks have been located. The unit has been checked for leaks (including couplings)
f1. on the whole unit
f2. on the couplings
Locate and report any refrigerant leaks
g. Check voltage imbalance: AB AC BC
Average voltage = V
Maximum deviation = V
Voltage imbalance = %
h. Voltage imbalance less than 2%
WARNING: Operating the chiller with an incorrect supply voltage or excessive phase imbalance constitutes misuse which
will invalidate the Carrier warranty. If the phase imbalance exceeds 2% for voltage, or 10% for current, contact your local
electricity supplier immediately and ensure that the chiller is not switched on until corrective measures have been taken.
Checking the evaporator water loop
Water loop volume = .............................................................................................. Litres
Calculated volume = .............................................................................................. Litres
3.25 litres/nominal kW capacity for air conditioning
6.5 litres/nominal kW capacity for cooling in industrial processes
Correct loop volume established
Proper loop corrosion inhibitor included................................................................. Litres of............................
Correct loop frost protection included (if required)................................................. Litres of............................
The installation pipework is equipped with heater cables, if exposed to temperatures below 0°C.
The water inlet pipe at the evaporator comprises a 20 mesh lter with a mesh size of 1.2 mm
Evaporator pressure drop check
Evaporator inlet = .............................................................kPa
Evaporator outlet = ...........................................................kPa
Outlet - inlet = ...................................................................kPa
WARNING: Calculate the evaporator pressure drop and use it with the performance tables (in the product documentation)
todeterminetheowrateinlitrespersecond.Checktheunit'sminimumowrate.
Total = ..................................................................................l/s
Nominal kW = ......................................................................l/s
The total is greater than unit’s minimum ow rate
The total corresponds to the specications of .....................l/s
WARNING: Once the unit is energised, check for alarms (refer to the control manual to check the alarm menu).
Report all alarms: ...................................................................................................................................................................................
Special notes: .........................................................................................................................................................................................
To start up the cooler
WARNING: Be sure that all service valves are open, and that the pump is on before attempting to start this machine.
Once all checks are complete, start up the unit.
The unit starts and operates correctly
9 - SYSTEM INITAL START-UP
53