Metalfab Motorized Trolley MR Series - Manual (Page 27)

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CAUTION
Improper operation of a hoist can create a potentially hazardous
situation which, if not avoided, could result in minor or moderate
injury, or property damage. To avoid such a potentially hazardous
situation THE OPERATOR SHALL:
• Maintain a firm footing or be otherwise secured
when operating the hoist.
• Check brake function by tensioning the hoist prior
to each lift operation.
• Use hook latches. Latches are to retain slings,
chains, etc. under slack conditions only.
• Make sure the hook latches are closed and not
supporting any parts of the load.
• Make sure the load is free to move and will clear all
obstructions.
• Avoid swinging the load or hook.
• Make sure hook travel is in the same direction as
shown on controls.
• Inspect the hoist regularly, replace damaged or
worn parts, and keep appropriate records of
maintenance.
• Use the hoist manufacturer’s recommended parts
when repairing the unit.
• Lubricate load chain per hoist manufacturer’s
recommendations.
• NOT use the hoist load limiting or warning device to
measure load.
• NOT use limit switches as routine operating stops.
They are emergency devices only.
• NOT allow your attention to be diverted from
operating the hoist.
• NOT allow the hoist to be subjected to sharp
contact with other hoists, structures, or objects
through misuse.
• NOT adjust or repair the hoist unless qualified to
perform such adjustments or repairs.
4.3 Trolley and Hoist Controls
4.3.1 Single Speed Pendant Control - When using the pendant
control depress the Up button to raise the hoist's hook or the
Down button to lower the hoist's hook as shown in Figure 4-1.
Depress the Forward and Reverse buttons to move the
trolley horizontally. To stop motion release the buttons.
4.3.2 Dual Speed Pendant Control – Pendant controls supplied
with dual speed hoists or trolleys have two step control
buttons. For low speed depress the button to the first step
and for high speed depress the button fully to the second
step. Use the Up button to raise the hoist's hook or the Down
button to lower the hoist's hook as shown in Figure 4-1.
Depress the Forward and Reverse buttons to move the
trolley horizontally. To stop motion release the buttons.
4.3.3 Trolley with Two Button Pendant – When a motorized trolley
is supplied with a two button pendant, the pendant buttons
control the trolley's horizontal motion in the forward and
reverse directions. Single and dual speed buttons function
identical to the four button pendant described above.
4.3.4
CAUTION
Make sure the motor completely stops
before reversing direction.
Figure 4-1 Push Button
Pendant Control