Maintenance - Haier Ci0193Aanb Installation, Operation And Technical Manual

7 Maintenance

Must not make the maintenance in operation.
7.1 System maintenance
To ensure the unit can operate normally with full load, and do not occur the failure, the below clauses should
be checked on period.
Check the humidity of the liquid sight glass on the liquid supply pipes. Confirm there is full of liquid and the
humidity indicator is dry state. If the humidity is too high or there is air bubble in the glass, even though the unit
has enough refrigerant, you had better change the filter drier core.
7.2 Electric control maintenance
Note: Before any maintenance for electric control, shut off the power of whole electric control box.
The electric parts need not special maintenance and only need to be fixed the wring every month
appropriately.
If the wiring is not performed as per the requirement, the guarantee will be invalid. The fuse shutoff or the
breaker acting shows short circuit or overload. Before changing fuse or restart the compressor, you must find out
the failure and repair it. The control box must be repaired by the experienced engineer. For any damage because
of any modification of control box, the manufacturer will not take any responsibility.
7.3 Recommended daily checking items
Time Position
1.oil heater
2.liquid sight glass of oil segregator
Before
startup
3.manual stop valve of the liquid spray pipe
4.voltage of power supply
5.ambient temperature(outdoor)
1.liquid sight glass of side cover
2.solenoid valve on the liquid spray pipe
Startup
3.vibration and noise
Operation 1.liquid sight glass of oil segregator
2.solenoid valve on the liquid spray pipe
3.discharging pressure
4.suction pressure
5.suction
running compressors
6.hot water outlet temperature (in heating)
7.chilled water outlet temperature (in
cooling)
pressure drop among
Checking items
Check if the electric heater is
electrified when stop
Oil level
Check if the valve is open fully
To check with a voltmeter
To check with a thermometer
Check the wheel rotation
When startup, check if it is open
To feel and listen
Oil level
Check if spraying oil
Check high pressure gauge
Check low pressure gauge
the Check low pressure gauge
To check with thermometer
To check with thermometer
28
HAIER CHILLER
Correct value
Start the electric heater
Ensure the oil level of the
glass should be over 1/3.
Open the valve
Not over rated value±10%
≤40℃
Wiring as per EY302947
No abnormal vibration
and noise
Recharge refrigerant oil*
1.1~1.8MPa
0.3~0.6MPa
≤0.05MPa
30~45℃
5~10℃