HISEER AS10/LF, Руководство по эксплуатации, установке и обслуживанию

Страница: 50 / 61

47
Alarms
Verify the Alarm Status
1. Check the alarm menu when the unit is in the
standby mode to see if any alarms or warning have
occurred.
Electrical Maintenance
1. Check for correct termination tension of the
electrical connections, contactors, isolation switch
and transformer.
2. Check the condition of the contactors, fuses and
capacitors,
3. Check the condition of the electrical cables and their
insulation.
4. Carry out an operating test of tray de-icing heater,
compressor oil heater, refrigerant valve and
expansion device.
5. Check the phase/earth insulation of the compressors,
fans and pumps.
6. Check the compressor, fan and pump winding status.
Mechanical Maintenance
1. Check the tension of the fan motor, fan wheel,
compressor and control box fixing bolts.
2. Check that no water has penetrated into the control
box.
Evaporator Coil
It is recommended that the finned coils are inspected
regularly to check the degree of fouling. This depends
on the environment where the unit is installed, areas by
the sea can cause increase corrosion and an approved
sprayed film coating is recommended.
For coil cleaning proceed as follows:
1.
Remove fibers and dust collected on the evaporator
face with a soft brush (or vacuum cleaner).
2. Clean the coil with the appropriate cleaning agents
Water Circuit Checks
1. Clean the water filter if fitted.
2. Purge the system to remove any air.
3.
Verify the correct operation of the water flow switch.
4. Check the status of the thermal piping insulation.
5. Check the water flow by checking the water inlet
and outlet temperature difference.
6. Check the concentration of the anti-freeze protection
solution (ethylene glycol or polyethylene glycol).
7. Check the status of the heat transfer fluid or the
water quality.
8. Check the expansion tank for signs of excessive
corrosion or gas pressure loss and replace it, if
necessary.
9. Check that the water pressure safety valve is not
leaking
10. Check that the air vent valves are not leaking system
water