Page 1104 - Workshop Manual - Aumark (BJ1051)

51-12
Heater and air conditioner- heater and air conditioner

5. Main relay of air conditioner
Multimeter Condition Standard value
connection pin
1-2 Normal Conducted
Input power
supply voltage
3-5 Conducted
between Pin 1
and Pin 2

Replace with a new electromagnetic clutch relay
when the switching condition doesn’t meet the
standard.

6. Hot air water tank
Check whether there is leakage while filling coolant liquid into the hot air water tank.

7. Air conditioning pipe
Water submersion method:
Fill dry nitrogen inside the pipeline, apply 3.5Mpa of pressure in the high-pressure pipe and 1.67 Mpa
of pressure in the low-pressure pipe, immerse the pipe in the water for 5 minutes and see whether
bubbles appear on the surface.
8. Evaporator
Water submersion method: Seal 1.67 mpa of pressure in the evaporator, immerse it in the water for 5
minutes and see whether bubbles appear on the surface.
9. Condenser

51 Water submersion method: Seal 3.5 mpa of pressure in the evaporator, immerse it in the water for 3
minutes and see whether bubbles appear on the surface.

Page 1104