Quick reference guide, Electrical testing, Air brake testing – IPA Tools 9008-SE Super MUTT Standard Edition User Manual
Page 8

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QUICK REFERENCE GUIDE
OPERATION AND TESTING
ELECTRICAL TESTING
1. CABLE TESTING: It is always recommended to use the cable tester to verify that
the MUTT
®
’s 7 round pin cable is in proper working order before trailer testing.
To perform the Cable Test, insert both ends of the 7 pin cable one in each receptacle
on the MUTT
®
’s side. Once the cable is installed, turn the MUTT
®
On to verify the
continuity between both ends of the cable. Look for the solid green light verifying
Ground Integrity and note if there are any green circuit LEDs blinking. Note that each
circuit is tested upon start up as well as ground fault check. Solid LEDs mean good
connection and blinking LEDs indicate an open circuit or poor continuity. The cable
tester can also be used to inspect all trailer cables.
2. GROUND INTEGRITY: When the MUTT
®
is first turned on, Ground Integrity and
Open Circuit checks are being performed. The green lights around the Control Knob
will blink and disappear one at a time until only the Ground Integrity light remains
solid green. When all the lights blink, it indicates a poor cable connection or bad
ground. Individual blinking lights indicate an open circuit. (Refer to pg. 11, K)
3. CIRCUIT PROBLEM INDICATION: As you turn the MUTT
®
Control Knob to test
each circuit, a steady green light verifies a properly working circuit. Refer to the three
red LEDs to the left of the Control Knob for circuit problem indication. These LEDs will
blink and the MUTT
®
will sound if there is a problem.
4. LOW DRAW LED TRAILERS: The MUTT
®
will identify any circuit drawing less than
100 mA as an open circuit. The trailer must have a minimum of two standard LED
pods on each circuit. ABS circuits using ABS computers are typically within the
threshold and do not require additional load.
5. CIRCUIT SELECTION: Circuits can be selected by pressing the Control Knob for
Auto Cycle mode, manually turning the Control Knob, or by using the remote control.
6. ALL CIRCUITS ON: All circuits can be turned on at one time by pressing/holding the
large remote button for 5 seconds. To cancel, press and release the large button on
the remote.
AIR BRAKE TESTING
(See detailed instructions on page 20-22)
1. AIR BRAKE TESTING: Turn the Power Source button to the desired power source.
2. LEAK DOWN TEST: To conduct leak down test on the Service and Emergency line
air circuits, open the Emergency Side ball valve to charge the circuit with air, then
close ball valve and note any pressure drop. Any pressure drop on the gauge is an
indication of a leak in the circuit. Repeat leak down test on the Service Side.
3. ACTUATE BRAKES: Push the selector switch to left, then by using the remote
control and in real time, actuate the brake servos. This feature allows you to see the
slacker adjustments and the push rod travel in real time.