Help for malfunctions
39
10 Help for malfunctions
Please contact our customer service department. This prevents damage due to
improperly performed work, saves time and avoids unnecessary costs.
10.1 Machine does not lift
10.2 Machine does not reach the full lift height
10.3 Electric motor does not run
Cause
Solution
Machine overloaded
Reduce the load
Leak in hydraulic system
•
Tighten screw connections
•
Reseal hydraulic cylinders
•
Replace hydraulic cylinders
•
Replace hydraulic hoses
Pump does not build up any pressure
Replace hydraulic unit
Motor turning in wrong direction
Check the rotational direction of the
voltage supply (only for rotary current)
Factory supplies a right-rotating field
Top sensor position was reached
Lower platform
Switching valve defective
Replace switching valve
Solenoid on lowering valve defective
Replace the solenoid
Lowering valve defective
Replace lowering valve
Solenoid valve plug defective
Replace solenoid valve plug
Controller fuse defective
Replace controller fuse
Cause
Solution
Oil level too low
Top up oil
Sensor not correctly set
Adjust sensor
Cause
Solution
Current supply interrupted
•
Check supply line
•
Check fuse
•
Check motor protection switch
Motor defective
Replace hydraulic unit
Summary of Contents for ML40
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