Adding Refrigerant; First Aid - Aston Martin DB7 Workshop Manual

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General System Procedures L ^ — / ' — ^ ^ . / ^
Adding Refrigerant
In order that the air conditioning system may operate efficiently it must contain a full refrigerant charge. The
indications of some system defects, and the results of certain tests, shows that a low charge is the most probable cause
of the fault. In such cases the charge shou Id be recovered from the system, the weight noted, and the correct amount
installed.
Note: Never attempt to guess the amount of refrigerant in a system. Always recover and recharge with the correct charge weight,
this is the only accurate method.
Caution: If oil is drawn out during the recovery process, the correct amount can be added directly from your recovery-recycle-
recharge station (if so equipped) prior to the charging process. It must be stressed that the need to protect compressor oil from
moisture is vital, observe the procedures in Handling Lubricating Oil.
Warning: Liquid refrigerant boils at -29°C (-20°F) at atmospheric pressure. Serious injury, even blindness, can occur if
the refrigerant comes into contact with the eyes.
Goggles and gloves must be warn while working with refrigerant.
First Aid
If refrigerant should contact the eyes or skin, bathe the eyes or affected area with cold water for several minutes. Do
not rub. As soon as possible thereafter, obtain treatment from a doctor or eye specialist.
8-14 May 1996