RITE-HITE RHR-600 DOK-LOK Owner’s Manual
21
Troubleshooting
General Diagnostic Information
Problem
Probable Cause
Solution
1
DOK-LOK
vehicle restraint hook does
not raise and lights do not flash.
Power source malfunction.
Check power source including building
circuit breaker, 1A fuse and circuit
breaker on power module.
Power module failure.
Verify the appropriate motor output
LED is lit when the LOCK button or
UNLOCK button is pressed.
Incorrect wiring.
Verify wiring per
Electrical Schematic
(Standard)
,
Figure 13, page 13
and
Electrical Schematic (Optional)
,
Figure 14, page 14
.
2
DOK-LOK
vehicle restraint lights are
flashing, but hook does not raise/
lower, to full extent.
Chain is loose or broken.
Adjust or replace as required.
Tripped circuit breaker.
Reset circuit breaker on power
module.
Low incoming voltage.
Verify incoming voltage at L1 and L2 is
a minimum of 110V. Do not power off a
control transformer from other
equipment unless properly sized for
load.
Power module failure.
Verify the appropriate LED is lit when
the LOCK button or UNLOCK button is
pressed.
No push button inputs.
Check for defective push button board
or ribbon cable.
Drive motor defective.
Check motor,
Figure 22, page 22
.
Repair or replace as required.
Incorrect wiring.
Verify wiring per
Electrical Schematic
(Standard)
,
Figure 13, page 13
and
Electrical Schematic (Optional)
,
Figure 14, page 14
.
3
DOK-LOK
vehicle restraint is
operational but hook drops causing
lights to change and/or horn to sound
while trailer is being serviced.
Drive motor defective.
Check motor,
Figure 22, page 22
.
Repair or replace as required.
Verify clutch torque.
If clutch torque is less than 500 in-lbs
replace.
Chain is loose or broken.
Adjust or replace as required.
4
DOK-LOK
vehicle restraint hook is
operational but all lights are out.
Bulbs burnt out, loose or missing.
Check all bulbs and replace as
required.
Damaged CPU module.
If the ISG and OSR LEDs are not
flashing while in the locked position or
the ISR and OSG LEDs are not
flashing while in the UNLOCKED
position, replace the CPU module as
required.
Incorrect wiring.
Verify wiring per Electrical Schematic,
Figure 13, page 13
.
Summary of Contents for DOK-LOK RHR-600
Page 6: ...6 RITE HITE RHR 600 DOK LOK Owner s Manual Figure 2 RHR 600 DOK LOK Features ...
Page 25: ...RITE HITE RHR 600 DOK LOK Owner s Manual 25 Notes ...
Page 33: ...RITE HITE RHR 600 DOK LOK Owner s Manual 33 Notes ...
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