R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 130)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
130/130
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
10 Troubleshooting
The table below lists some of the faults and malfunctions that may occur in the hoist, their causes and the
corrective actions needed to eliminate them.
#
If you are unable to identify and eliminate the fault using this table, contact a service agent
authorized by the manufacturer.
Fault Probable cause Corrective action
Main supply power is not connected. Switch the main power supply on.
Release the Emergency Stop button.
Press the Start button.
See section ‘Using the pushbutton controls’.
A fuse has blown. Replace the fuses.
The hoisting motor has overheated
and the temperature sensor is
preventing operation. Wait for the motor to cool. Avoid unnecessary and repetitive short
starts.
A motion has reached its limit. Drive away from the limit.
The hoist is not
operative.
One phase is dead (no voltage). Repair the power supply. See section 'Connecting to the mains
network’.
The hoist is operative
but does not hoist the
load. The hook is holding an overload. Check that the load on the hook does not exceed the maximum
permitted load.
The load slips
downwards. The hoisting brake is worn. Contact a service agent authorized by the manufacturer. See
section 'Hoisting motor’.
Hoist motions are in the
wrong direction. The phases of the power supply are
connected wrongly. Interchange the sequence of 2 phases of the power supply. Check
the directions of motion. See section 'Connecting to the mains
network’.
There are obstructions on the track. Clear the track. Travel motion is not
operative or makes a
load noise.
Travel control is malfunctioning. See section ‘Inverter for travel’.