7B-16 Air Conditioning System: Manual Type
Repair Instructions
Operation Procedure for Refrigerant Charge
S7RS0B7216001
WARNING
!
• Your eyes should not be exposed to refrigerant (liquid).
Any liquid HFC-134a (R-134a) escaping by accident shows a temperature as low as approximately –
6 °C (21.2 °F) below freezing point. Should liquid HFC-134a (R-134a) is exposed to your eyes, it may
cause a serious injury. To protect your eyes from such accident, it is necessary to always wear
goggles. Should it occur that HFC-134a (R-134a) is exposed to your eyes, consult a doctor
immediately.
– Do not use your hand to rub the affected eye(s). Instead, use fresh cold water to splash it over the
affected area to gradually raise temperature of such area above freezing point.
– Obtain proper treatment as soon as possible from a doctor or eye specialist.
• Should the liquid refrigerant HFC-134a (R-134a) is exposed to your skin, the affected area should be
treated in the same manner as when skin is frostbitten or frozen.
• Do not handle refrigerant near any place where welding or steam cleaning is performed.
• Refrigerant should be kept in a cold and dark place. It should never be stored in any place where
temperature is high, e.g. where exposed to direct sun light, close to fire or inside vehicle (including
trunk room).
• Avoid breathing fume produced when HFC-134a (R-134a) is burned. Such fume may be hazardous to
your health.
Recovery
When discharging refrigerant out of A/C system, always recover it by using refrigerant recovery and recycling
equipment because discharging refrigerant HFC-134a (R-134a) into atmosphere would cause adverse effect to
environments.
Start evacuation.
Stop evacuation.
Wait 10 minutes
Check A/C system for
pressure tighteness.
Recharge A/C system with
refrigerant.
Check A/C system for refrigerant
Check A/C system for refrigerant
leaks and amount of refrigerant
leaks and amount of refrigerant
charged.
Performance test
Inspect and repair connections.
Inspect and repair connections.
If gauge shows
abnormal conditions
Recharge 370 20 g of
refrigerant.
I5RS0C721005-01
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