Cm-et Lodestar User Manual download pdf (Page 11)

CHECKING LIMIT SWITCH OPERATION IF HOIST IS

EQUIPPED

Operate hoist over the entire length of its rated lift, checking

upper and lower limit switches for correct operation as follows:

1. Press (UP) control and raise the lower hook until

top of hook block is about one foot (.30 M) below the

hoist.

2. Cautiously continue raising the hook until the upper

limit switch stops the upward motion. The upper limit

switch is set at the factory to stop the hook block 6

inches (152 mm) from the bottom of all hoists.

3. If adjustment is necessary, see page 12.

4. Press (DOWN) control and cautiously lower hook

until lower limit switch stops the downward motion.

Maintain a minimum of 24” (610 mm) of chain freely

hanging over the side of the hoist.

5. If adjustment is necessary, see page 12.

NOTE: If the hoist is equipped with a chain

container/bag, reset the upper and lower limit

switches as indicated on page 12.

Under no condition should the hook block or load

be permitted to come in contact with the chain

container/bag. If contact is made, the function of

the chain container can be interfered with and its

fasterners imperiled.

NOTE:

When chain bag is filled to capacity the

bag must be no more than 75% filled.

GENERAL

1. The Protector is designed to allow the intermediate gear

to slip on an excessive overload. An overload is indicated

when the hoist will not raise the load. Also, some clutching

noise may be heard if the hoist is loaded beyond rated

capacity. Should this occur, immediately release the

(UP) control to stop the operation of the hoist. At this

point, the load should be reduced to the rated hoist capacity

or the hoist should be replaced with one of the proper

capacity. When the excessive load is removed, normal

hoist operation is automatically restored.

CAUTION: The Protector is susceptible to overheating

and wear when slipped for extended periods. Under no

circumstance should the clutch be allowed to slip for

more than a few seconds.

Due to the above, a hoist equipped with a Protector is not rec-

ommended for use in any application where there is a possi-

bility of adding to an already suspended load to the point of

overload. This includes dumbwaiter (*see below) installa-

tions, containers that are loaded in mid-air, etc.

(*) Refer to limitations on Page ii concerning dumbwaiter

applications.

Also, if a Lodestar Hoist with a Protector is used at unusual

extremes of ambient temperatures, above 66°C (150

F), or

below -9°C (15°F), changes in lubricant properties may per-

mit the hoist to raise larger loads than under normal operat-

ing conditions and presents possibility of damage or injury.

2. With hoists that are equipped with an adjustable screw

limit switch, the limit switch will automatically stop the

hook at any predetermined point when either hoisting or

lowering.

OPERATING INSTRUCTIONS

HOIST

1. Check to ensure that the load point is in line with the hoist

head.

2. WHEN APPLYING A LOAD, IT MUST BE DIRECTLY

IN LINE WITH HOIST. AVOID OFF-CENTER LOADING

OF ANY KIND.

3. Take up a slack load chain carefully and start load easily

to avoid shock and jerking of hoist load chain. If there is

any evidence of overloading, immediately lower the load

and remove the excess load.

4. Do not allow the load to swing or twist while hoisting.

5. Do not allow the load and/or attachments to bear against

the hook latch.

SAFETY PROCEDURES

For safety precautions and a list of Do’s and Do Not’s for safe

operation of hoists, refer to page i.

1. When preparing to lift a load, be sure that the attachments

to the hook are firmly seated in hook saddle. Avoid off

center loading of any kind, especially loading on the point

of hook.

2. When lifting, raise the load only enough to clear the floor

or support and check to be sure that the attachments to

the hook and load are firmly seated. Continue lift only after

you are assured the load is free of all obstructions.

3. Do not load hoist beyond the rated capacity shown on

hoist identification plate or on the hoist motor housing

cover, Models B, C & F and on hoist back frame cover,

Models J, L, R, LL & RR. Overload can cause immediate

failure of some load-carrying part or create a defect

causing subsequent failure at less than rated capacity.

When in doubt, use the next larger capacity of CM

Lodestar Hoist.

4. Do not use this or any other overhead materials handling

equipment for lifting persons.

5. Warn personnel of your intention to lift a load in the area.

Tie off the load with auxiliary chains or cables before

access to the area beneath the load is permitted.

6. Permit only competent personnel to operate unit.

7. Do not wrap the load chain around the load and hook onto

itself as a choker chain.

Doing this will result in:

a. The loss of the swivel effect of the hook which could

result in twisted chain and a jammed lift wheel.

b. The upper limit switch, if so equipped, is by-passed

and the load could hit the hoist.

c. The chain could be damaged at the hook.

8. Before lifting load, check for twists in the load chain. A twist

can occur if the lower hook block has been capsized

between the strands of chain. Reverse the capsize to

remove twist.

WWAARRNNIINNGG

Allowing the hook block to run into the bottom of the hoist

when raising a load or allowing the chain to become taut

between the loose end screw and the frame when lowering

a load may break the chain and allow the load to drop.

TTOO AAVVOOIIDD IINNJJUURRYY::

Do not allow the hook block to contact the bottom of the

hoist or the loose end chain to become taut.

OPERATING INSTRUCTIONS

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Cm-et Lodestar User Manual Page 11

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