Hitachi Set Free mini-HNRQ1 Series, Service Manual

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168
FIELD WORK INSTRUCTIONS
4. Service and Maintenance Record
Model:
Serial No. Compressor MFG No.
User name and address:
Date:
1. Is the rotation direction of the indoor unit fan correct?
2. Is the rotation direction of the outdoor unit fans correct?
3. Are there any abnormal compressor sounds?
4. Has the unit been in operation at least twenty (20) minutes?
5. Check Room Temperature
Inlet: No.1 DB /WB °C, No.2 DB /WB °C, No.3 DB /WB °C, No. 4 DB /WB °C
Outlet: DB /WB °C, DB /WB °C, DB /WB °C, DB /WB °C
Inlet: No.5 DB /WB °C, No.6 DB /WB °C, No.7 DB /WB °C, No.8 DB /WB °C
Outlet: DB /WB °C, DB /WB °C, DB /WB °C, DB /WB °C
6. Check Outdoor Ambient Temperature:
Inlet: DB °C, WB °C
Outlet: DB °C, WB °C
7. Check Refrigerant Temperature:
Liquid Temperature: °C
Discharge Temperature: °C
8. Check Pressure:
Discharge Pressure: MPa
Suction Pressure: MPa
9. Check Voltage:
Rated Voltage: V
Operating Voltage:
L-N V
Starting Voltage: V
10. Check the Input Running Current of the Compressor:
Running Current:
A
11. Is the refrigerant charge correct?
12. Do the operation control devices operate correctly?
13. Do the safety devices operate correctly?
14. Has the unit been checked for refrigerant leakage?
15. Is the unit clean inside and outside?
16. Are all cabinet panels mounted?
17. Are all cabinet panels free from rattles?
18. Is the indoor unit filter clean?
19. Are the indoor unit heat exchanger and outdoor unit heat exchanger clean?
20. Are the stop valves open?
21. Does the drain water flow smoothly from the drain pipe?