Yale 11353395D manual PRE-OPERATION Checks

The trolley width shall be adjusted by loosening the jam nuts on the traverse drive side of the threaded rods at each end of the hoist. If necessary, lubricate the frame alignment bars with penetrating oil before attempting to adjust trolley width. The trolley side may then be pushed or driven into position by turning the adjusting nuts on the treaded rods. Adjust nuts on each side of the hoist simultaneously to avoid binding. After adjusting the trolley to the proper width, tighten all adjusting nuts and the clamp collar, and re-secure the electrical conduit/cable. Verify that the geared wheels mesh properly with the traverse drive pinions. Using proper equipment, carefully lift the trolley and hoist and install on the end of the beam. Lubricate the wheel gear and pinion (WG, Section IV, Paragraph 4-3).

b)CLOSED-END BEAM: For trolleys which are to be mounted along the span of a beam not having open ends, the trolley must be adjusted in the same manner as described above to a width that allows clearance between the axles and the beam flange. Using proper lifting equipment, the trolley and hoist must then be lifted to the beam where it is to be installed. Once in position, adjust the spacing between the trolley wheel flanges to be 3/16”-1/4”” greater than the exact width of the beam flange (See Figure 2-1). After tightening all adjusting bolts, the clamp collar, and all electrical conduit/cable clamps, carefully set the trolley on the beam. Lubricate the wheel gear and pinion (WG, Section IV, Paragraph 4-3).

2-3.CONNECTING HOIST TO ELECTRICAL SERVICE. Electrical service to the hoist may be power cable or a guarded system having sliding shoe or wheel type collectors.

WARNING

Be certain that electrical power supply is OFF and locked in the open position before attempting any electrical connections to the hoist. This equipment must be effectively grounded according to the National Electric Code ANSI/NFPA 70, or other applicable codes. If the grounding method used is through the trolley wheels, then each section of track must be grounded by metal-to-metal connection to the building ground. Certain environments may prevent proper grounding by this means. In this case a separate grounding conductor should be provided.

a)Follow ANSI/NFPA 70, state, and local electrical codes including the grounding provisions thereof when providing electrical service to the hoist.

b)Make electrical connections using the appropriate wiring diagrams furnished with the hoist. All electrical connections, including connections to collectors or power cord shall be made only by qualified journeyman electricians.

CAUTION

Power supply to hoist and trolley must be the same voltage, frequency, and phase that are specified on the hoist and trolley nameplate.

2-4. PRE-OPERATION CHECKS.

a)Check Oil Level. (Figure 2-1) The gearcase has been filled with oil to the proper level. However this should be re-checked before operating the hoist.

Check oil level by removing the plug indicated in Figure 2-1. When properly filled, oil should be level with the bottom of the tapped hole. Fill to this level with oil as specified in Paragraph 4-2.e.

b)Check Push Button Operation and Phasing.

To properly check the phase of the hoist, follow these steps:

(1)With “POWER OFF” operate all the push buttons and determine that they do not bind or stick in any position.

WARNING

If any push button binds or sticks in any position – DO NOT TURN POWER ON – determine the cause and correct the malfunction before operating.

(2) Connect hoist to power source.

WARNING

On three phase hoists it is possible to have “Reverse Phasing” causing the block to lower when the “UP” button is depressed. When this condition exists the automatic limit switch is inoperative and hoist operation will be dangerous.

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