15
Fig. 25 Typical Hoist Control
d) Ceck EMERGENCY STOP button and pushbut-ton
control (Fig. 25)
i) Check that the UP and DOWN pushbuttons
return to their normal open position when
released. They should move freely without
sticking.
ii) Push the red EMERGENCY STOP button.
It should lock and remain depressed. Now
try pushing the UP or DOWN pushbut-
ton – the motor should not turn.
Twist the EMERGENCY STOP button in the
arrow direction to disengage it – it should
pop out, and the hoist should now operate
normally.
Repeat this check a few times to check function
of pushbuttons and the EMERGENCY STOP.
The same procedure applies to hoists with pen-
dant control.
WARNING:
If the pushbuttons or EMERGENCY
STOP button do not function properly,
remove hoist from service until re-
paired by a quali
fi
ed person.
5.2 Normal
operation
(1) For
UP
and
DOWNWARD MOTION
of the platform
just press the corresponding button.
(2) When operating platform, take care to operate hoists
so that the platform stays level without tilting one end
more than the other.
(3)
WARNINGS
a) DO NOT
fi
x push-buttons in run position.
b) DO NOT operate the hoist, if it is function-
ing improperly, or damage is noted.
c) NEVER pick up a load beyond the rated
capacity appearing on the hoist.
d)
S T O P O P E R AT I O N S I M M E D I AT E -
LY, if at any time, when the hoist op-
erates, the wire rope does not move
(i.e. no UP or DOWN travel).
It is likely that damaged wire rope is jamming
the hoist. Continued operation might cause
wire rope failure or damage to the hoist.
CONTACT the SUPPLIER!
e) IN CASE OF AN INCIDENT involv-
ing injury, or property damage, con-
tact the supplier immediately.
DO NOT disturb, alter, or move any equip-
ment at the scene of the incident.
f) OPERATING IN EXPLOSIVE ATMOSPHERE:
Never operate hoist or any other electric
equipment in a potentially explosive at-
mosphere – such as around distilleries,
re
fi
neries, chemical plants, ship or silo
interiors.
Always obtain of
fi
cial ap-
proval before commencing operations at
these or similar locations.
(4) Special Operating Notes for Welding or
Arc scar
fi
ng
– ALWAYS PROTECT your equipment and yourself
from the danger of arcing.
– BE SURE supporting equipment is grounded to
prevent arcing across wire rope to the structure.
– DO NOT use wire rope as a ground for welding.
– DO NOT allow your welding gun to contact wire
rope, hoist, or any other metal equipment or struc-
ture.
– PROTECT work area above and be-
low hoist with insulation.
Split a section of air rubber hose, and wrap around
wire ropes.
– Use an insulated thimble assembly to attach all
wire rope(s) to the suspension system.
e) CONTINUOUSLY CHECK rigging, lines, clear-
ances, and all other elements throughout the entire
time on the job.
