Equipment Self Test

^ Before applying the tester to the vehicle it should be self tested as follows.

^ Open the tool case and remove the manifold assembly.





^ Connect the manifold inlet hose to the quick connector on the control panel, (A, Illustration 2).





^ Install the fuel cap test adapter, (A, Illustration 3), on the manifold adapter receiver, (B, Illustration 3).

^ Turn the control valve, (B, Illustration 2), to the "A" TEST position.

^ Turn the gas cylinder valve tot he "OPEN" position; observe the WARNING.

^ Press the "ON/OFF" button, (C, Illustration 2), to switch the tester "ON".

^ The SYSTEM PRESSURE digital display, (D, Illustration 2), should now indicate zero.

^ If the SYSTEM PRESSURE is not at zero, press the pressure discharge valve, (C, Illustration 3), on the pipe manifold, to relieve the pressure until zero is indicated.

^ Turn the control valve from the "A" TEST position to the "B" FILL position.

^ The SYSTEM PRESSURE display should now indicate between the limits of 13.8 to 14.2 in. H2O.

Note:
The tester will measure pressure to 0.1 in. H2O. When the system is initially charged the gauge may show minor fluctuations, due to hose position and temperature changes. Allow the system to stabilize before using the fine pressure adjustment control knob.

^ If the reading is outside the limits, after allowing the system to stabilize, use the FINE PRESSURE ADJUSTMENT control knob, (E, Illustration 2), to bring the pressure within limits.

^ Turn the control valve from the "B" FILL position to the "A" TEST position.

^ Press the START button, (F Illustration 2), to begin the 2 minute countdown, which will be shown on the SYSTEM PRESSURE display.

^ During the countdown the PRESSURE LOSS digital display, (G, Illustration 2), will show what, if any, pressure loss (or gain) is occurring in the system.

Note:
The digital readout on the tester may also show a negative number which indicates the unit is gaining pressure. This is not an uncommon occurrence when the cold gas from the cylinder is warming up to room temperature. As the gas warms it creates pressure.

^ The final figure indicated on the PRESSURE LOSS display should not be more than 0.5 in. H2O. Disregard the "PASSED" and "FAILED" lights during the self-test. A negative number is acceptable since a pressure gain due to temperature change shows there is no leak.

^ Place the manifold discharge hose in an approved safety container and then press the pressure discharge valve on the pipe manifold to depressurize the system.

^ Remove the fuel cap test adapter from the manifold adapter receiver.

^ After completing the test, close the gas cylinder valve and shut off the tester to avoid wasting gas.