Page 221 - Workshop Manual - Aumark (BJ1051)

04-77
Diagnosis-Heater and Air Conditioner

8. Never allow liquid refrigerant to enter your
eyes or contact your skin.
If this happens:
(a) Flush contact site with plenty of cold water.
Notice:
Never rub your eyes or skin.
(b) Apply clean Vaseline.
(c) Please see a doctor immediately.

9. Never heat any tank or place it on an open flame.
10. Never drop or hit it. Handle with care!
11. Never operate the compressor when there is
not enough refrigerant in the refrigeration 04
system.
Without adequate refrigerant in the refrigeration system,
poor oil lubrication will occur and the compressor may
be burned out. Please take care to avoid this.
12. Never open high-pressure line when the
compressor is running.
If high-pressure valve is opened, refrigerant will flow
reversely to result in compressor cylinder block fracture.
Therefore, only low-pressure valve can be opened and
closed.
13. Take care and never overfill the refrigeration system.
Refrigerant overfill will result in such problems as insufficient cooling, poor fuel economy, and
engine overheat.
14. Do not open the system when there are puddles around or in rainy days.
15. After the refrigeration system is opened, be sure to cap or bind and seal it promptly in
order to prevent entry of water vapor or foreign substances in air.
16. Refrigeration oil must be always covered with brand labeled. Hybrid use of
refrigeration oils of different brands is not allowed so as to avoid reduction in oil
quality and viscosity.
17. When installing the refrigeration system, the reservoir must be installed last.
18. After refrigerant is changed, you must refill the system with refrigeration oil first and
then fill refrigerant.
19. Repair tools must be clean and dry. Installation and repair sites should also be clean.
20. Various seal cushions (washers) must be made of rubber sealing materials having good
compatibility with the refrigerant used.
21. Connection hoses must be made of the materials intended for refrigeration. Connection
hoses suited to R-134a should use nylon linings.
22. Refrigerant must be drained slowly so as to avoid refrigeration oil being taken out. Do
not allow refrigeration oil to contact any glossy metal surface.
23. Do not fill liquid refrigerant from low pressure end. Do not start up the compressor
when filling refrigerant from high pressure end.
24. Do not clean condenser and evaporator with steam. Use cold water or compressed air only.
25. When repairing the refrigeration system, protect your car with such articles as
protection pads.
26. Do not start the compressor when the refrigeration system is not filled with refrigerant yet.
27. To prevent corrosion during a long-term storage of the compressor (used), be sure to
bleed air in the compressor completely and then fill it with refrigerant or dry nitrogen.

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