463-0620-01 Rev A. June-201526
620 Operation and Troubleshooting Guide
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CAN
®
Harness
Sealed Connectors
The Deutsch sealed weatherproof connector on the panel includes a locking ring which must be turned
counter clockwise to separate the connectors. Turn the locking ring clockwise to positively seat the
connectors.
Note: LOFA does not recommend using dielectric grease or sealant with sealed connectors.
These chemicals may cause seal damage and allow water entry.
Make sure the connectors are dry before mating.
Mating wet sealed connectors traps moisture in the connector which may lead to corrosion.
Use LOFA provided cavity plugs to seal the connector if any wires are removed.
Unsealed Connectors
For unsealed connectors exposed to the elements, LOFA recommends using dielectric grease to protect
contacts.
Note: LOFA does not recommend using adding sealant with unsealed connectors.
Sealant added to unsealed connectors traps moisture and encourages corrosion.
Harness Routing
The minimum routing radius of the wiring harnesses should be at least two times the diameter of the
wiring harness. Bends within 1 inch (25 mm) of connectors may distort seals and allow moisture into the
connector.
Welding on Equipment with Electronic Controls
Proper welding procedures are required to avoid damage to electronic controls, sensors and associated
components. The component should be removed for welding if possible.
The following procedure must be followed if the component must be welded while installed on
equipment with electronic controls. This procedure will minimize the risk of component damage.
Do not ground welder to electrical components such as the control ground or sensors! Improper
grounding can cause damage to electrical components! Clamp the ground cable from the welder to
the component being welded. Place the clamp as close as possible to the weld to reduce the possibility
of damage.
1. Stop the engine. Turn the key switch to the OFF position.
2. Disconnect the negative battery cable from the battery.
3. Open any installed battery disconnect switch.
4. Unplug the control system if possible.
5. Connect the welding ground cable as close as possible to the area to be welded.
6. Protect the wiring harness from welding debris and spatter.
7. Use standard welding methods to weld the materials.
Replacement Parts
When replacement parts are required, LOFA Industries recommends using replacement parts supplied
by LOFA or parts with equivalent specifications. Failure to heed this warning could lead to premature
failure, product damage, personal injury or death.
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