Tractel Group tralift TE Serie Manual De Utilización Y De Mantenimiento página 20

Problem
Jamming of the load chain
GB
Overheating of hoist
Brake does not open
Abnormal noise
Unintentional lowering of load/the load
slips
Hoist will not lift load
Trolley
Problem
The trolley will not operate
Rotates in one direction
Movement of trolley reversed in relation to
buttons on control station
Poor rotation of trolley motor with muffled
noise
Possible cause
Distortionor twisting of the chain inside or
improper alignment with entry guide
Catching of the slack chain around an
obstacle
Overload
Low voltage
Extremely hot operating environment
Frequent starting
Defective rectifier or brake coil
Mechanical parts
Brake lining worn
Oil or grease on the brakes' lining
Overload
Faulty friction clutch
Low voltage
Possible cause
Main isolating switch off
Emergency stop activated
Power supply cut
Contacts on control station fautly
Contactor coil burnt out
Power supply phases reversed
Faulty power supply network
Significiant voltage drop
Faulty gearbox
Overload
20
Actions
Stop operation immediately
Continued operations might cause chain
failure. Contact supplier or an approved
service shop
If the load is suspended, take up the load
with another device which provides the
equivalent safety, and remove the load
from the hoist. Try to release the chain,
and if not, send the hoist to an approved
service shop
The slack chain MUST be freed before
resuming operation
Reduce the load
Have electrician correct low voltage condi-
tion of power supply
Ventilate or shield hoist from heat source
Avoid inching operations
Call an approved service shop
Call an approved service shop
Adjust the barkes gap (refer to section)
Spray the lining with brake cleaner and
wipe them off
Reduce the load if it exceeds the rated. If
the motion continues, send the device to
an approved service shop
Call an approved service shop
Have an electrician correct low voltage
condition of power
Actions
Set it to "on" position
De activate the emergency stop
Check all the electrical connections
Call in an approved engineer
Call in an approved engineer
Reverse two phases
Check the supply voltage
Check that voltage is correct and there is
no overload
Call in an approved engineer
Check and reduce the load