Precautions on Servicing A/C System

Piping
- Never use heat for bending pipes.
When bending a pipe, try to make its bending radius as slight as possible.
- Keep internal parts of air conditioning free from moisture and dust.
When disconnecting any line from system, install a blind plug or cap to the fitting immediately.
- When connecting hoses and pipes to each other respectively, previously apply a few drops of refrigerant oil to seats of coupling nuts and O-ring.
- When tightening or loosening a fitting, use two wrenches, one for turning and the other for support.
- Receiver/dryer inlet fitting must be connected to pipe from condenser outlet fitting.
- Tighten flared nuts according to the following specifications of tightening torque.

Tightening torque
8 mm pipe: 13 N.m (1.3 kg-m, 9.5 lb-ft)
1/2 inch pipe: 23 N.m (2.3 kg-m, 17.0 lb-ft)
5/8 inch pipe: 33 N.m (3.3 kg-m, 24.0 lb-ft)

- Route drain hose so that drained water does not make any contact to vehicle components.

Handling Refrigerant HFC-134a (R-134a)
- When handling refrigerant, always wear goggles to protect your eyes.
- Avoid you direct contact to liquid refrigerant.
- Do not heat refrigerant container higher than 40 °C (100 °F).
- Do not discharge refrigerant into atmosphere.
- Do not allow liquid refrigerant to touch bright metals. Refrigerant combined with moisture is corrosive and will tarnish surfaces of bright metals including chrome.
- After recovering refrigerant from system, the amount of compressor oil removed must be measured and the same amount added to the system.

WARNING:
Should refrigerant HFC-134a (R-134a) strike your eye(s), consult a doctor immediately.
- DO NOT USE YOUR HAND TO RUB AFFECTED EYE(S). Instead, use quantities of fresh cold water to splash it over affected area to thus gradually raise its temperature above the freezing point.
- Obtain proper treatment as soon as possible from a doctor or eye specialist.
Should liquid refrigerant HFC-134a (R-134a) get on your skin, such affected part should be treated in the same manner as when skin is frostbitten or frozen.

Refrigerant Recovery
When discharging refrigerant out of A/C system, always recover it by using refrigerant recovery and recycling equipment. Discharging refrigerant HFC-134a (R-134a) into atmosphere would cause adverse effect to environments.

NOTE: When handling recovery and recycling equipment, be sure to follow the instruction manual for the equipment.