20
5.52.420.00.01.07
12.4.3
Adjusting the air gap
View "X" on the brake.
1 Loosen the locking screws (6) by half a turn.
2 Turn the cap screws (8) into the magnetic body
(9) anti-clockwise.
3 By turning the locking screws (6) clockwise,
move the magnetic body (9) towards the
anchor plate (10) using a feeler gauge until
nominal air gap “a” is reached (see table).
4 Unscrew the cap screws (8) from the magnetic
body clockwise.
5 Tighten the locking screws (6).
6 Check the air gap again and re-adjust if
necessary.
Illustration 15
12.5 Overload
protection
If the hoist does not lift the permitted load, the overload protection must be adjusted. Adjustment may only be
done by a service company, authorised by the manufacturer!
DANGER!
The factory setting of the overload protection is secured by a seal. Any guarantee becomes invalid if this setting is
changed. Should maintenance be necessary, please contact a service company that is authorised by the
manufacturer.
Depending on the type of hoist, the following variants are possible:
12.5.1 Slipping
clutch
Illustration 16
12.5.2
Electronic hoisting power limiter (as option, except serial AT)
Power consumption of the hoist motor is measured during lifting movement of a load
by an adjustable power measuring device (overload guard). The setting is made via a
separate relay for main and creep lifting speed. Power consumption of the motor is
load-dependent and increases with the load. If the set value is exceeded, the relay
responds immediately and switches the motor off via switching elements. After the
overload protection has been activated the LOWER button must be pressed first so
that the LIFT function can be activated again. Before lifting again the load must be
reduced to the nominal load!
Illustration 17
13 Inspection
13.1
General Overhaul for motor-driven units
The validated, national accident prevention regulations must be observed and the measures to reach "safe
working periods (S.W.P.)" according to FEM 9.755.
After the "theoretical working time D" has been elapsed, the owner/user must take motor driven devices out
of operation and effect a General Overhaul.
Further use of the equipment is only allowed after a licensed qualified person has proofed
that further use is possible without doubt
and
the conditions for further use have been determined
