HEK MSHF, User Manual

Page: 27 / 84

SAFETY
3-1 MSHF • 7295-026A
3. SAFETY
No changes or modifications
may be made to the machine.
The ground surface must be
sufficiently stable to support the
weight of the machine and the
mast.
The mast must ALWAYS be
anchored in accordance with the
instructions
If during assembly and
disassembly, the fences do not
provide sufficient protection,
suitable safety harness must be
used at heights above 2 metres.
3.1 General
The machine is constructed to be safe,
both during assembly and in use. The
machine is thus provided with the following
built-in and additional safety features:
- The motor brake works automatically if
the supply voltage fails.
- If the TOP limit switch fails to operate,
so that the mast climbing work platform
continues to rise, an additional
emergency TOP limit switch is
operated.
- If the LOWER limit switch fails to
operate, so that the mast climbing work
platform continues to descend, an
additional emergency LOWER limit
switch is operated.
- If the TOP limit switch fails and the red
topmast is not mounted, so that the
mast climbing work platform continuous
to rise, the drive unit will rest on the
safety hooks.
- If the pinion runs out the rack the EMOS
system will stop the drive unit by means
of differential current measurement.
3.2 Safety prior to use
- The chassis or ground frame must be
effectively supported.
- The working area around the machine
must be free from obstacles.
- The machine must be securely
anchored at the specified intervals.
3.3 Safety in use
In winds of strengths above
6 Beaufort (12.5 m/s) (41.1 ft/s)
by a freestanding machine or
7 Beaufort (15.7 m/s) (51.5 ft/s)
by an anchored machine, the
machine must not be used and
the platform must be set in the
lowest position.
There must be no obstructions in
the path of the machine.
During use, no person should
stand under the machine.