Leak Test System

GAS LEAK TEST

1. PERFORM IN THESE CONDITIONS:
- Stop engine.
- Secure good ventilation (If not, the gas leak detector may react to volatile gases which are not refrigerant, such as evaporated gasoline and exhaust gas.)
- Repeat the test 2 or 3 times.
- Make sure there is some refrigerant remaining in the refrigeration system.

When compressor is OFF: approximately 392 - 588 kPa (4 - 6 kgf/Sq.cm, 57 - 35 psi)







2. GAS LEAK TEST IN A/C UNIT
a. Bring the gas leak detector close to the drain hose before performing the test.

HINT:
- After the blower motor is stopped, leave the A/C unit for more than 15 minutes.
- Expose the gas leak detector sensor the under the drain hose.
- When bring the gas leak detector close to the drain hose. make sure that the gas leak detector does not react to the volatile gases.

If such reaction is unavoidable, the vehicle must be lifted up.








b. If gas leak is not detected on the drain hose, remove the blower register from the A/C unit. Then insert the gas leak detector sensor into the unit and perform the test.







3. GAS LEAK TEST AT PRESSURE SWITCH
Disconnect the connector and leave the pressure switch for approximately 20 minutes. Then bring the gas leak detector close to the pressure switch and perform the test.

4. GAS LEAK TEST AT REFRIGERANT LINES
Bring the gas leak detector close to the refrigerant lines and perform the test.

HINT: Make sure there is no dirt on joints.