M
AINTENANCE
8.7. Check control device
WARNING
Danger from faulty controller
A rough-running control element or a control el-
ement that is stuck in an actuated position may
indicate a faulty controller.
I
Do not use the product
I
Have the product repaired
1. Relieve the product
PROFI 25 TI
.
2. Briefly actuate and release all control ele-
ments of the controls one after the other. The
control elements must return to their initial po-
sitions immediately. The on and off function
must operate without problem.
All control elements of the controls must always be
free-moving.
8.8. Check direction of movement
I
Check that the direction of movement of the
load hook corresponds to the direction indi-
cated by the arrows on the control elements.
8.9. Check the braking function
WARNING
Danger from loads crashing
If the chain lags, it may be due to a faulty brake.
The load may fall.
I
Do not use the product
I
Have the product repaired
Check without load
I
Alternately switch your unloaded product
PROFI 25 TI
between lifting and lowering
If you release a control device, the chain must
come to a standstill in an acceptable time after
the brake has been applied. For physical reasons,
however, the braking distance cannot have the
value zero. The brake has a response time that is
dependent on the control length. A greater control
length increases this response time.
Check with nominal load
I
Alternately switch your unloaded product
PROFI 25 TI
between lifting and lowering
If you release a control device, the chain must
come to a standstill in an acceptable time after
the brake has been applied. For physical reasons,
however, the braking distance cannot have the
value zero. The brake has a response time that is
dependent on the control length. A greater control
length increases this response time.
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Doc.-No.: VA049318-10-OM-EN-0319-64-2
