50
Pub. No. 1290 - January 2010
RITE-HITE
®
Dual-Dok
®
Combined Lift & Leveler System Owner’s Manual
GENERAL TROUBLESHOOTING CONTINUED
Problem
Probable Cause Solution
15.(Continued)
c. Electrical system.
c. Check valve coil (A0205) and verify that it
is energized while the pins are disengaged
and the motor is running.
16.Control box button and/or
a. Selector valve pulled.
a. Check selector valve position located on
pendant station will not
front scissor cross member. Should be
respond.
pushed in for normal operation.
b. No power to system.
b. See General Power Problems.
c. Support latch engaged.
c. Disengage support latch.
d. Electrical System.
d. - Push each button and watch the indicator
LEDs on the face of the PLC to verify that
all control box and pendant station buttons
are being recognized.
- Check all limit switch inputs using the
function keys of the message center.
Compare limit switch states to State Chart.
- Check push buttons and pendant station
for loose wires or damaged components.
17.Unit will not complete
a. Electrical System.
a. - Check all limit switch inputs using the
weight check.
function keys of the message center.
Specifically: (E0203, E0204 & E0207).
Compare limit switch states to State Chart.
- Check 24 VAC voltage to motor contactor
coil.
-Check all valve coils on manifold and
wiring terminated at junctions box.
Specifically: (A0201 & A0202).
- See General Power Problems.
b. Hydraulic system.
b. Increase the pressure on the Lip
Sequence Valve (SV1). (1/4 turn clockwise)
18.Platform will not raise
a. Electrical System.
a. - Check all limit switch inputs using the
during a weight check.
function keys of the message center.
Specifically: (E0203, E0204 & E0207).
Compare limit switch states to State Chart.
- Check 24 VAC voltage to motor contactor
coil.
-Check all valve coils on manifold and
wiring terminated at junctions box.
Specifically: (A0201).
- See General Power Problems.
b. Hydraulic system.
b. Increase the pressure on the Lip
Sequence Valve (SV1). (1/4 turn clockwise)
Содержание DUAL-DOK 2200
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