Page
15
SM4
X
0
TROUBLE SHOOTING
Action in Case of Breakdown
In case of a breakdown, check the following points:
•
Electricity cut.
•
Main fuses.
•
Electric motor.
•
Obstruction under hoist.
If the hoist is still not working, the hoist must not be started or repaired by unqualified staff. Contact
the nearest authorised service shop.
Do not start repairing the hoist until the main switch has been cut off.
Do not disconnect the safety system and do not operate the hoist after breakdown and prior to
repair.
Trouble Shooting Chart
Symptom:
Cause
:
Remedy
:
Platforms no longer horizontal
when resting on the ratchets
Incorrect adjustment
Adjust platforms and cross beams until
they are horizontal. Slacken nut under top
plate for rail. Raise or lower ratchet rails as
required by means of adjust-ment bolts in
top of posts. After adju-stment tighten lock
nut under top plate for rail. Ratchet rails
should preferably be adjusted to lowest
possible position.
Platforms no longer horizontal
when hanging in cables under
load
One or several cables stretched
Adjust cables
Activation of control to lower
hoist
from topmost position does
not release ratchets
One or more of the cables have
stretched
Adjust cables
Ratchets are not released
regardless of parking height
Power
source failure
Cure fault
Lock solenoid failure
Replace lock assembly
Platforms are not lifted free from
ratchet rails
Raise lift a little and lower.
One ratchet binding
Let an assistant operate UP
button so that
lift ascends in small jerks. Meanwhile pull
ratchet free manually. Use pliers or grips.
Defective solenoid valve
Replace solenoid valve
Oil leakage
High pressure hose defective
Replace hose
Leaks at fittings
Tighten
Cylinder seals defective
Replace or repair cylinder
Molnar 4 Post Hoist
