HEK MSHF, User Manual, Page: 73 / 84

MAINTENANCE
9-3 MSHF • 7295-026A
9.3 Autolevel mechanism check
1. Raise the platform by three metres.
2. Operate the brake release
mechanism on one drive unit. The
autolevel safety mechanism must
now operate.
3. Set the platform back in the horizontal
position with the "UP" push-button.
4. Repeat the previous step for the
other unit.
5. If the autolevel safety mechanism
does not function correctly, the mast
climbing work platform must not be
used! Consult your service engineer.
9.4 The motor brake
The motor has a built-in electromagnetic
brake. This brake functions according to
the "normally ON" principle, that is, when
the motor has no power supply the brake is
active and the motor shaft will be braked.
(n = 0 rev./min).
The braking effect is achieved by friction
between several discs and the brake must
be used "dry" (not greased).
Fig.9-1 Drive unit brake release