Product Manual

9
PART 5: PRETESTING CHECKLIST
The pretesting checklist should always be completed prior to using the MUTT
UNIT PLACEMENT
• Place the tester on a at, level surface.
• Chock trailer wheels to avoid rolling.
MAINTAIN CONNECTORS
Dielectric grease should be used on all connections to avoid corrosion. If a bad
connection exists at the terminal junction, you may get an erroneous reading and
the MUTT® will not work properly.
• Make sure you have a solid connection in the socket.
• Be certain the 7 pins in each plug are clean and spread to the proper size.
• Always check the MUTT® connector pins at the side of the MUTT® for proper
expansion. Over time, the pins may bend in slightly resulting in a poor connection
between the connector and the cable ends. A at head screwdriver can be used
to expand the pins until a tight connection is made.
CABLE TESTING PROCEDURE
The MUTT® has a special cable feature to test 7-way round pin cables for continu-
ity. The cable testing feature can be used to test a tractor’s cable, or the supplied
MUTT® cable. All cables should be tested prior to MUTT® operation.
• Insert each end of the cable into both side connectors on the MUTT®. Be sure to
push the cable ends in rmly until they reach the bottom of the connector.
• Turn main power switch to a desired power supply.
• Once the power is selected, the green lights around the control knob will blink
and disappear one at a time until only the Ground Integrity Indicator remains solid
green. Once the initial check has been performed, poor cable conditions will be
shown by a blinking light for the problem circuit.
• If the cable has an open circuit or continuity problem, the corresponding circuit will
ash repeatedly.
• Further testing can be performed by selecting each circuit individually via the
control knob or remote. When an open circuit is detected, the LED for the circuit
will ash and an audible alert will be heard.