ROTORCOMP NK 100, Руководство по эксплуатации, Страница: 47 / 52

Operating Manual - NK 100
[en] 09/2008 10.1
10 Troubleshooting
Fault Possible cause Remedy See chapter
Incorrect direction of
rotation
Phases reversed Reconnect 2 supply lines
System difficult to start Motor output insufficient Check
Drive gear ratio "too fast" Check
Star-delta switchover
incorrect
Set
Compressor is flooded
with oil
Check
System has not been
discharged yet
Check
Ambient temperature too
low
Check oil viscosity and belt
tension
5.3
Oil filling too viscous Check viscosity 8.1.1
Pressure losses at filter
cartridges
Pressure loss at separator
cartridges too high
Replace separator
cartridge
7.5.2
Combistat switches off
due to excessively high
temperature
Oil shortage Check oil level in oil
reservoir and top up
if necessary
7.2
Oil filter soiled Replace oil filter cartridge 7.4.2
Thermostat defective Replace thermostat
Oil cooler soiled Clean oil cooler on air side,
clean on oil side
if necessary
Incorrect installation
a) Room ventilation
b) Exhaust air blocked
c) Thermal short circuit
Observe recommendation
on installing system
5.3
Combistat defective Replace combistat