Revision 1.1
22
7.2
Possible cause & remedy of lift gate malfunction
FAULT
POSSIBLE CAUSE
REMEDY
Red warning lights do not flash
when starting up
1. Control Device is defective
2. PC-Board is defective
1. Replace
2. Replace
Warning lights do not flash when
platform opens (if equipped)
1. Tilt angle of sensor B16 is
defective
2. PC-Board is defective
3. Motor is defective
1. Replace
2. Replace
3. Replace
Power Pack does not run when
opening function activated
1. Push button does not give any
contact
2. Motor contactor is defective
3. Motor is defective
1. Replace
2. Replace
3. Replace
Motor starts up but platform does
not open
1. Solenoid valve S3 on
Tilting Cylinder does not open
2. Control Valve S5 or Shuttle
Valve jams
1. Clean or Replace
2. Clean or Replace
Platform opens too slowly or does
not open to horizontal position
1. Flow control valve R4 jam
or defective
2. Electric motor malfunctioning
3. Control valve S5 or shuttle
valve jams or defective
4. Hydraulic oil too thick
5. Bearings mechanical jamming
1. Clean or Replace
2. Check Collector and replace
carbon brushes if necessary
3. Clean or Replace
4. Change oil as recommended
5. Lubericate bearing points
Platform
tilts
during
lowering
operation (before reachimg the
ground)
1. Tilt angle of B13 Sensor is
incorrectly adjusted
1. To set the time of tilting, tilt the
angle on B13 counter-clockwise
to start the tilting procedure later.
Platform tilts on its own
1. Solenoid valve S3 on
tilting Cylinder soiled or
defective
2. Piston seal in tilting Cylinder is
defecitve
1. Clean or Replace
2. Replace
Platform lowers on ots own
1. Solenoid valve S1 on
lifting Cylinder soiled or
defective
1. Clean or Replace
Summary of Contents for MiniFix
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