Yale 11353395D manual Section III Operation, Push Button Operation

(3)Operate “UP” button briefly to determine direction of hook travel.

(4)If hook raises when “UP” button is depressed, phasing is correct.

(5)If hook lowers when “UP” button is depressed, hoist is “Reverse Phased.” TURN AND LOCK POWER OFF and check the pushbutton wiring. If the pushbutton was wired properly, correct the problem by interchanging any two leads at power source connection. Do not change internal wiring of hoist.

c)Check Limit Switch Operation.

(1)A block operated upper limit stop is furnished as standard equipment on all Yale “Global King” hoists. This limit stop is factory set to stop the lower block at the safest high position, guarding against over travel and possible damage to hoist. No adjustment can be made. However, the hoist should be tested by jogging the lower block against the limit weight to be sure the limit switch is functioning properly. When lower block lifts the limit weight, the hoist will automatically stop. If lower block coasts through the limit switch when lifting a reversing switch will automatically close and reverse direction of motion to lowering.

WARNING

Damage to the hoist, a dropped load, and injury may result if limit switches fail due to improper use.

TO AVOID INJURY:

UNDER NORMAL OPERATING CONDITIONS, STOP HOIST TRAVEL BEFORE ENGAGING LIMIT SWITCHES. LIMIT SWITCHES ARE SAFETY DEVICES AND SHOULD NOT BE USED AS NORMAL OPERATING CONTROL.

WARNING

Some hoists may be shipped with the electrical controls loose (disconnected) and will not have the upper and lower limit switches connected. DO NOT OPERATE HOIST UNTIL LIMIT SWITCH- ES ARE PROPERLY CONNECTED AND ADJUSTED. Failure to do so may allow hoist to be operated beyond proper travel limits, which can cause load to drop, resulting in damage to equipment or injury.

(2)A geared rotary type upper and lower limit switch is also provided as standard. This switch is adjustable and although roughly preset by the factory, it should be adjusted at time of installation to the desired high and low limits of lower block travel. Refer to SECTION VII, Paragraph 7-3.

d)Check Lower Block and Hoisting Cable. Depress “DOWN” push button and run lower block to its lowest position. No less than two wraps shall remain on the drum with the loaded hook in its lowest position. Also check to see that the lower block and rope do not twist excessively. If it does twist to the extent that two ropes rub against each other, disengage the swaged rope end from the frame anchor and twist the rope four or five turns in a direction opposite to that which the block turns. Reconnect rope to the frame anchor, holding firmly to eliminate rope twisting back to its original position. Operate hoist up and down a few times. If lower block still rotates excessively repeat process until twisting is corrected.

e)Lubricate Hoisting Cable. For longer cable life, it is recommended that the cable be lubricated at time of installation by applying a heavy coating of lubricant CL (Paragraph 4-7) as outlined in SECTION IV, Paragraph 4-3.

f)When first using the hoist and trolley, operate with lighter loads through full travel before applying maximum load.

SECTION III – OPERATION

3-1.GENERAL.Operation of Yale “Global King” hoists is controlled by a convenient pendant push button station. With it, the hoist can be controlled to give fast lifting and lowering; or controlled to lift or lower the load in small increments, providing accurate spotting. The push button station has a built-in interlock to prevent depressing opposing buttons simultaneously.

When first using the hoist, break in by operating under lighter loads to full travel before applying maximum load.

3-2.PUSH BUTTON OPERATION.

a)Depress push button marked “UP” to raise load.

b)Depress push button marked “DOWN” to lower load.

c)Depress push button marked “RIGHT” to traverse one direction.

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