IPA Tools 9008-DL Super MUTT Deluxe Edition - Manual (Page 21)

21
AIR BRAKE PRE-TEST PROCEDURE
1. Read and understand all Safety Warnings before operation.
2. CHOCK ALL WHEELS BEFORE TESTING OR ATTACHING SHOP AIR
TO UNIT.
3. Push the main Power Source rocker switch (fig. 3-B) to the middle
Off position.
4. Move Air Control rocker switch (fig. 3-A) to the middle Emergency setting.
5. Turn both Emergency Side and Service Side ball valves (fig. 7-C & E) to the
Closed position.
6. If using an external power source, connect it to the 20 Amp external power
input socket (on the side of the MUTT ® ).
7. Attach red gladhand hose from the MUTT ® directly to your trailer’s Emergency
Side air system and attach the blue gladhand hose to Service Side. Now you
can connect your shop air to the Shop Air inlet on the right side of the unit.
Connect an air regulator where needed.
DO NOT EXCEED 120 PSI.
NOTE: To set the air regulator, pull and turn knob (fig. 7-D)
LEAK DOWN TESTING
EMERGENCY SIDE – MANUAL LEAK DOWN TEST
1. Connect shop air to Shop Air inlet (on the side of the unit). Look for any signs
of air leaks on test unit. Air leaks could result in faulty test results and may not
allow the MUTT ® to work properly.
2. Turn Emergency Side (red) ball valve (fig. 7-C) to the Open position – this air
charges the Emergency Side.
3. Once air has filled the Emergency Side, turn ball valve (fig. 7-C) to Closed
position to begin leak down test.
WARNING: Pressurizing Emergency Side will release the brakes.
4. Note any PSI drop after stabilization of pressure.
5. Look for air loss according to your local code or test by noting consistent air
drop over time. If air pressure continues to drop, you can turn air supply back
on Emergency Side (fig. 7-C) and begin to look for the leak by inspecting air
system, if an unacceptable air pressure loss is observed.
6. Once the Emergency Side air passes the leak down test, a leak down test on
the Service Side can now be performed.