Help With Malfunctions; Faults And Troubleshooting - EMG ELDRO EdEx Series Assembly Manual

8

Help with malfunctions

8.1

Faults and troubleshooting

Table 23: Faults and troubleshooting
Fault
EdEx thruster does
not lift
The EdEx thruster
lifts slowly,
hesitantly, jerkily
The EdEx thruster
lifts slowly,
hesitantly, jerkily
ELDRO-EdEx-Montageanleitung-607338-EN.docx
If used as intended, no typical malfunctions can occur on the EdEx
thruster.
However, malfunctions can occur due to wear or misuse.
Malfunctions on the EdEx thruster may only be rectified when the
system is stopped, disconnected from the power supply and the
movements have come to a standstill.
Observe the Assembly and Disassembly chapters for information on
troubleshooting.
Possible cause
Motor not running:
Supply line interruption
Motor not running:
Switched off by trigger, e.g. motor
protection switch
Motor not running:
Cable connections have poor contact
Motor not running:
Rotor is blocked in the stator within the
bearing or close to the running wheel
(pump)
Thruster loaded too heavily:
Too great an external load in addition
to the brake and reset spring
Lack of operating fluid
Lifting rod jammed from the outside
EdEx thruster loaded too heavily:
Too great an external load in addition
to the brake and reset spring
Lifting rod jammed from the outside
Supply line interruption (two-phase
operation)
Air in the pump circuit
Help with malfunctions
Faults and troubleshooting
Measure
Search for the interruption and rectify
Check the motor protection switch and
fuse elements
Clean corroded contacts
Replace the thruster and send to the
manufacturer for repair
Adjust load to the EdEx thruster
Top up the operating fluid
Rectify the jam/twisting or lateral forces
in the thrusters to be driven
Adjust load to the EdEx thruster
Rectify the jam/twisting or lateral forces
in the thrusters to be driven
Search for the interruption and rectify
Actuate EdEx thrusters a few times
when stopped and top up the operating
fluid if required
Check the thruster's installation position
and version
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