Operating Failures And Their Causes - Columbus McKinnon HTS-E PROLINE Mode D'emploi

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Standard Lifting Table HTS-E PROLINE
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Operating failures and their causes

Failure
Cause
Loss of oil in the
Normal wear of the sealing
cylinder
elements.
The table lifts
The bearings got stuck.
jerkily.
Foreign substances in the
running paths of the track rollers.
The table does not
The lifting table is overloaded, the
lift.
pressure control valve is effective
The electric motor does not start. Check current supply (voltage), fuses, contactor.
Magnetic valve does not close
anymore or valve seat is leaky
due to soiling.
Lifting speed is
The pump is defect.
reduced
Motor does only run on two
phases or has under voltage.
Platform does not
Too low oil filling.
lift to the complete
lifting height
The table is driving against a
mechanical resistance
The table does not
The magnet on the drain valve is
lower, line rupture
defect
protection valve is
Leakage in the hydraulic system
actuated
Burst hydraulic hose
The table does not
Leakage in the hydraulic system
stop exactly on the
positioned level.
Oil is soiled and therefore valve
seat is not completely tight.
Return valve is leaky. Pump or
electric motor is slowly turning
backwards.
Disposal:
After having placed out of service, the parts of the lifting table have to be recycled or
disposed acc. to legal regulations!
technische Änderungen vorbehalten
Elimination
At design 0,5 t and 1t the cylinder is welded. We
recommend to replace the entire hydraulic cylinder
At design 1,5 t and 2t replace the sealing elements.
Extend the lifting table in unloaded state. Put in the
mounting supports. Decompress the hydraulic system by
lowering.
Let the oil flow out of the cylinder.
Remove hydraulic screwing.
Disassemble the cylinder by unscrewing the guiding nut.
Remove the spring ring, draw the piston rod upwards out
of the guiding nut and put in new sealing.
Mounting has to be effected in reverse order.
Grease bearings or provide with oil.
Remove dirt or foreign substances.
Never grease the track rollers of the running paths.
Reduce load.
Make the valve lifter running or remove the magnetic
valve. Clean the valve and rinse thoroughly.
For that, special cleanness has to be observed.
If required, remove valve adapter.
Remove the pump and check it. When establishing larger
defects, send the pump in for repair.
Check motor connection, control, and operating voltage.
Re-fill oil according to oil recommendation (with hair
sieve).
Check free movement of the platform, the scissors, and
the guiding rollers and remove probably existing
impediments.
Replace the magnetic coil.
 discharge the lifting table
 put maintenance supports in
 eliminate the damage
 ventilate the Hydraulic system
 release valve lock with "LIFTING"
Tighten tube screwing.
Check cylinder sealing.
 discharge the lifting table
 put maintenance supports in
 extend the platform in unloaded state
 remove the valve, clean.
 effect an oil change, if necessary rinse it
 re-mount and make a test run.
Clean respective replace the return valve.
design changes under reserve
F 06.08.109
changements techniques sous réserve
26

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