Page 1094 - Workshop Manual - Aumark (BJ1051)

51-2
Heater and air conditioner- heater and air conditioner
8. don’t make the liquid refrigrant enter
into the eyes or contact the skin
If the liquid refrigerant enters into the eyes or
contacts the skin.
(a). Wash the contact part with a large amount
of cold water.
Notice:
Don’t rub the eyes or skin.
(b). Apply clean vaseline.
(c). Please go to the hospital at once.

9. don’t heat up or place the tank body on the open fire.
10. don’t make it drop or hit it, and be careful during the movement.

11. don’t operate the compressor while
there is not enough refrigrant in the
wrong right refrigeration system.
If there is not enough refrigerant in the
refrigeration system, the lubrication of engine oil
will not be enough, the compressor may be burnt
out, please be careful to avoid this condition.
12. don’t open the high-pressure pipeline
when the compressor is operating
If the high-pressure valve is open, the refrigerant
will flow backwards, which may break the
cylinder body of the compressor; therefore, only
the low-pressure valve can be open and closed.
13. don’t fill too much refrigrant in the refrigeration system
If too much refrigerant is filled, the heat radiation will be not enough, the economical efficiency of the
51 fuel oil will be poor and the engine will be too hot.
14. don’t open the system when there are puddles or when it is raining.
15. the refrigeration system opened shall be covered or wraped up for sealing in time to
prevent water vapour or foreign matters in the air from entering into it.
16. the refrigeration oil shall be covered closely at any time and the trademark of the
refrigeration oil shall be indicated, different trademarks of refrigeration oil can’t be used
together to avoid reducing the quality or viscosity of the oil.
17. the reservoir must be installed at last while installing the refrigeration system.
18. supply refrigeration oil first for the system while replacing with new refrigrant and then
fill into refrigrant.
19. the repair tools must be clean and dry, the installation and maintenance site must be clean.
20. the rubber sealing materials that are used to make various sealing soft pads (washers)
shall have good compatibility with the refrigerant.
21. the connection hose must be made of the materials that are specially used for refrigeration;
nylon shall be used for the lining of connection hose that is applicable to r-134a.
22. the refrigerant must be discharged slowly to avoid discharging refrigeration oil together,
and it can’t contact the lustrous metal surface.
23. don’t fill liquid refrigrant into the low-pressure end and don’t start the compressor while
filling refrigrant into the high-pressure end.
24. don’t clean the condenser and evaporator with vapour, only cold water or compressed air
can be used.
25. protect the vehicle with retaining washers or other things while repairing the refrigeration system.
26. don’t start the compressor before filling cooling medium into the refrigeration system.
27. if the compressor (used) shall be kept for a long period to avoid corrosion, discharge the
air inside the compressor and fill refrigrant or dry nitrogen into it.

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