Quick reference guide, Electrical testing, Air brake testing – IPA Tools 9008-DL Super MUTT Deluxe 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 Integ-

rity 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 ed LEDs to the left of the Control Knob for circuit problem indica-

tion. 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 stan-

dard 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/hold-

ing 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

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