Troubleshooting dock leveler – Poweramp POWERHOLD 4.2009 User Manual

Page 37

TROUBLESHOOTING DOCK LEVELER

Symptom

Possible Cause

Solution

Platform locks into
“safety” as platform
lowers. Lip drops to
vertical position.

Platform lowering speed is
too fast.

Adjust platform down speed control.

See Adjust Cable Weight and Down Speed Control
in the Adjustment section.

NOTE: Extreme cold weather OR incorrect fluid
may cause platform to lock. Adjustment is same.

Dock leveler equipped
with ARTD: Platform
does not automatically
return to the
cross-traffic position or
operates abnormally.

The auto return proximity
switch not sensing target
correctly.

Adjust proximity switch and target as necessary. See
Adjust Auto Return To Dock (ARTD) in the
Adjustment section.

Defective proximity switch.

Replace switch.

Broken wire. Loose or
corroded wire connections.

Repair or replace wires and connections as
necessary.

4111-0016 — November, 2008