38
4111-0034 — Sept. 2018
© 2018 Systems, LLC
Symptom
Possible Cause
Solution
Platform does not raise.
Low Air pressure
Minimum 80 PSI required at regulator, if lower check
air supply. 95 PSI recommended.
No voltage to solenoid
Check breakers; if okay check voltage at control box
and solenoid
Lanyard Cable Adjustment
Check Cable adjustment
Incorrect Air Line
Connections
Verify Pilot and Main supply air line connections are
correct at control box.
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete.
A hard hat or other applicable head protection
should always be worn when working under or
around a dock leveler.
Always stand clear of platform lip when working in
front of the dock leveler.
Unless the dock leveler is equipped with a tethered
remote, two people are required to engage the
maintenance prop: one person to operate the unit,
the other person to engage the maintenance prop.
In addition, it is recommended and good safety
practice to use an additional means to support
the dock platform and lip anytime when physically
working in front of or under the dock leveler. This
additional means may include, but is not limited to a
boom truck, fork truck, stabilizing bar or equivalent.
TROUBLESHOOTING
• Check all fuses and circuit breakers. Replace any
blown fuse(s) with a fuse of equal specification and
reset circuit if applicable.
• Make sure the correct voltages are present at
the proper locations inside the control panel(s) if
applicable.
Before performing the detailed troubleshooting procedures, check the following items first:
Summary of Contents for CentraAir
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