Product Manual

7.5 ALL CIRCUITS ON (OVERRIDE) MODE:

All Circuits On Mode will engage all electrical circuits at the same time. While short

circuit sensing is operational in this mode, if a short circuit is found, the MUTT

will

not be able to identify which circuit is the cause of the short. Open and crossed

circuits sensing is not operational in this mode.

On trailers using incandescent bulbs, All Circuits On Mode will typically result in an

overload because the amperage draw will exceed the maximum of 20 amps.

All Circuits On Mode can be accessed manually or by remote control.

MANUALLY

1. To activate, press and hold control knob for 10 seconds. Listen for beep, then release.

2. To cancel, press or turn the control knob.

NOTE: Does not work when ABS or Brake Light Circuits are selected.

REMOTE CONTROL

1. To activate All Circuits On Mode press and hold UP ARROW for 5 seconds and

then release.

2. To cancel, press and release either arrow.

Press and Hold UP ARROW to Activate

Press and Hold Control Knob to Activate

PART 8: AIR BRAKE TESTING

Complete the pretesting checklist prior to all testing procedures.

8.1 TESTING SETUP

1. Push the Power Source Switch to the OFF position.

2. Set both Emergency and Service Side Air Ball Valves to the CLOSED position.

3. Attach gladhand hoses from the MUTT

directly to your trailer’s air system, securing

the red hose to the Emergency Side and the blue hose to the Service Side.

4. Connect your shop air to the Shop Air Inlet on the left hand side of the tester.

5. Listen for any air leaks where the shop air connects to the tester, to avoid

erroneous results.

Set Emergency and Service Valves to CLOSED

Push Power Source Switch to OFF

Attach Gladhand Hoses

DANGER

CHOCK TRAILER WHEELS

WARNING!!! DO NOT CONNECT SHOP AIR UNTIL COMPLETING

THE TESTING SETUP PROCEDURE STEPS 1-5. FAILURE TO

FULLY UNDERSTAND THESE WARNINGS CAN RESULT IN MINOR

TO SERIOUS INJURY AND POSSIBLY DEATH.

Connect the Shop Air to the Shop Air Inlet