Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 42)

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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 wire rope 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 Hoist and Trolley 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.
Figure 4-1 Push Button
Pendant Control