KIRLOSKAR KC Series User Manual

9.TROUBLE SHOOTING CHART:
Fault
Cause
Remedy
9.1 Deliery pressure too high (probably nDelivery stop valve not open wide Open fully
H.P. pressostat becomes operative) nLess or too warm cooling water nIncrease water supply
(On water cooled condensers the nGas suction pressure too high (during nPartially close suction stop valve
temperature indicated by delivery starting-up period only)
pressure gauge rises more than 6°C nSuction pressure higher than normal. nRefer fault No. 9.3
above that of cooling water outlet. nToo much refrigerant in condenser. nOpen liquid control valve further or
On aircooled condensers the temp- release some liquid from system.
erature indicated by delivery
pressure gauge rises more than
10°C above that of air temperature
at condenser outlet).
nCondenser tubes blocked or dirty. nClean condenser
nAir in the system. nPurge system.
nDefective delivery pressure gauge nRepair
9.2 Delivery pressure too low nLeaking H.P. safety valve nRepair/Renew
nSuction stop valve not open wide enough nOpen fully.
nSuction pressure lower than normal nRefer fault No. 9.4
nFaulty delivery pressure gauge nRepair/Renew
nDefective delivery valve nReplace.
9.3 Suction pressure too high nLiquid control valve open too wide. nReadjust setting.
nLeaking H.P. safety valve nRepair/Replace
nDefective pressure gauge nRepair/Replace
nCapacity control out of order (if fitted) nInspect and repair
nSuction or delivery valves defective. nRenew.
nExcessive leakage past piston nReplace piston rings.
9.4 Suction pressure too low (probably nSuction stop valve not open wide enough nOpen fully
L.P. pressostat operates) nLiquid control valve not open wide nOpen further
enough.
nRefrigerant suction strainer chocked. nClean
nLess refrigerant in system. nTop up with refrigerant.
9.5 Liquid stroke nLiquid control valve open too wide. nReadjust setting.
nCapacity control out of order (if fitted) nInspect and repair
nDefective evaporator float (if fitted) nInspect and repair or replace
9.6 Oil pressure too high during running Oil pressure regulator defective or Repair/Readjust
(during running-up period oil maladjusted.
pressure is always higher than Defective pressure gauge Repair/Renew
normal until operating temperature
reached)
9.7 Oil pressure too low (oil pressure Oil pressure regulator defective or Repair/Readjust
differential pressostat probably Insufficient oil in crankcase Top up with oil.
operates) Suction pressure too low See fault No. 9.4
Oil suction and/or delivery strainer Clean
blocked
Oil return pipe between crankcase and Clean out or repair
oil suction strainer blocked.
Slack bearings. Refit
Blocking of oil ways in crankshaft Clean-out.
9.8 Pressure difference between suction Suction pressure too high See fault No. 9.3
and delivery pressures too small. Delivery pressure too low. See fault No. 9.2
enough n
IMPORTANT
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KIRLOSKAR KC Series Specifications

General

Brand	KIRLOSKAR
Model	KC Series
Category	Air Compressor
Language	English