KIRLOSKAR CHILLERS PRIVATE LIMITED
A Kirloskar Group Company IOM-KAC-ENG - Page 23
c) Make sure all interlock wiring is completed as per Kirloskar Chillers wiring diagram.
d) Check compressor lubricating oil level. ‘Prior to startup, the oil level should cover at
least half level of the oil sight glass.
e) Turn the main power switch ON; this will energize the crankcase heaters of the
compressor. Make sure the Emergency stop push button is in "OFF" position.
g) The unit might have been shipped from factory with the liquid line valves closed.
Open the refrigerant line valve.
NOTE: ALWAYS REPLACE VALVE SEAL CAPS.
h) Check and inspect all evaporator liquid piping. Make sure that the flow direction is
correct and piping is made to correct water nozzle connections on the respective heat
exchangers and open the isolation valves of secondary side.
i) Start manually evaporator liquid pumps. Check all piping for leaks. Vent the air from
the evaporator liquid header / from the entire secondary system.
j) The secondary circuit in the evaporator side should contain clean, non-corrosive
liquid.
k) Set the required liquid flow with the help of balancing valve(s) or any other flow
measuring device, the flow rate data is given in the unit design and physical data sheet.
l) Ensure that adequate load is available for initial start-up.
3.5. Startup and Operation
a) Make sure that all refrigerant line valves are open and always replace the valve caps.
b) Check supply voltage in all three phases. Verify crankcase heaters have operated for at
least 24 hours prior to startup. During unit off cycle, crankcase heaters are energized.
c) Turn the RUN / STOP selector switch of compressor(s) to RUN position.
d) Turn the SYSTEM RUN / STOP to RUN position.
e) Once the liquid flow in evaporator are established, the controller samples the chilled
liquid temperature and compares it against the set point. Based on the load the controller
gives signal for further action.
IMPORTANT: CRANKCASE HEATERS SHOULD BE OPERATED AT
LEAST 24 HOURS PRIOR TO START- UP. CRANKCASE SHOULD BE
WARM.
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