CHESTER HOIST AL Series Operating And Maintenance Instructions Manual

Air low headroom chain hoists

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CHESTER HOIST

AIR LOW HEADROOM

CHAIN HOISTS

AL-680

SECTION A

OPERATING and MAINTENANCE

INSTRUCTIONS

FOR AL SERIES HOISTS

Users should refer to the ANSI B30.16 American National Standard and ASME HST-5M

Performance Standard for Air Chain Hoists for specific requirements regarding safety

practices for the installation, maintenance, and operation of this equipment.

Your Order No. ________________________

Hoist Serial No. ________________________

Model No. _____________________________

When ordering parts, please use hoist serial number

CHESTER HOIST

Chester Hoist ∙ P.O. Box 449 ∙ 7573 St. Rt. 45 ∙ Lisbon, Ohio

44432Phone (330) 424-7248 ∙ Fax (330) 424-3126

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Summary of Contents for CHESTER HOIST AL Series

Page 1 Your Order No. ________________________ Hoist Serial No. ________________________ Model No. _____________________________ When ordering parts, please use hoist serial number CHESTER HOIST Chester Hoist ∙ P.O. Box 449 ∙ 7573 St. Rt. 45 ∙ Lisbon, Ohio 44432Phone (330) 424-7248 ∙ Fax (330) 424-3126...
Page 2: Table Of Contents
An instruction which is important to highlight. WARNING Failure to read and follow the instructions contained in this manual could result in unsafe hoisting practices which may lead to personal injury or property damage. CHESTER HOIST • P.O. BOX 449 •...
Page 3: Safety Precautions
I - SAFETY PRECAUTIONS This hoist is designed for safe operation within the limits of its rated capacity. There are safety features built into the hoist to protect the operator and others from injury due to failure of the hoist itself. However, listed below are safety pointers which must be followed in order to protect personnel and property.
Page 4: Limit Valve Operation
3. LIMIT VALVE OPERATION Before placing the hoist in operation, check for proper upper limit valve operation. Push the “UP” button and, while the hoist is moving upward, raise the upper limit valve lever. The hook should stop immediately. REPEAT THIS PROCEDURE FOR THE LOWER LIMIT VALVE.
Page 5: Operation
d. Never operate the hoist without an air line oiler to supply oil laden air to the hoist. Lubrication supplied by this oiler is critical to the operation of the hoist motor, brake, and air controls. WARNING: Failure to provide clean, dry, and oil laden air to the hoist will damage the hoist and create excessive maintenance.
Page 6: Inspection
(2) Care should be taken in hoisting to be certain that: (a) Hoist chain is not kinked or twisted. (b) Load does not contact any obstructions. (c) Multiple part chains are not twisted about each other. (3) No hoist should be operated until the hoist unit is centered over the load.
Page 7: Annual Inspection
It is recommended that detailed records be kept and made available to appointed personnel. NOTE: Only parts obtained from Chester Hoist should be used in maintenance of the hoist. 1. MAINTENANCE PROCEDURE Before adjustments or repairs are started on the hoist, the following precautions should be taken: a.
Page 8: Lubrication
See Figure 1 for chain reeving. f. Use only chain supplied by Chester Hoist Inc. g. See page 14 for instructions on loading chain into a chain container if applicable.
Page 9: Functional Testing
springs engage the brake. The brake has a manual release to disengage the brake for maintenance. WARNING: Never manually disengage the hoist brake with a load supported or the load block in a raised position. Never operate the air motor with the brake manually disengaged. b.
Page 10 CHAIN REEVING Fig.1 NOTE: LOOKING AT HOIST MOTOR SIDE Fig. 2...
Page 11 WARNING: Before installing this trolley hoist, make certain that the trolley wheel contour is correct for the type of beam the unit will operate on and that the trolley wheel spacing is correct for the beam flange width. Flat flange beams should have flat tread or universal tread wheels and tapered flange beams should have tapered or universal tread wheels.
Page 12 TABLE 2. TROUBLESHOOTING TROUBLE CAUSE REMEDY Hook Fails to Stop 1. Improperly operating brake. 1. See Section V.8. at End of Travel 2. Worn brake linings. 2. Replace when worn excessively. 3. Air controls not functioning 3. Check air controls. See schematic properly.
Page 13: Illustrated Parts List
GENERAL The illustrated parts lists that follow are designed to help you identify replacements parts for your Chester hoist. In addition to exploded illustrations which cover a large part of your hoist, some manufacturers’ sheets are included for such items as motors, brakes, push buttons, and other items. If assistance is required, please contact your Chester representative.
Page 14: Chain Container Installation Notes
CHAIN CONTAINER INSTALLATION NOTES: The chain container for this hoist has been shipped loose. Follow these instructions to install the container and to load the chain into the container. CHAIN LOADING NOTE: Lower the load block as far as possible. After installing the chain container, run the load block up allowing the hoist mechanism to fill the container.
Page 15 SERVICE NOTES...
Page 16 SERVICE NOTES...
Page 17 SERVICE NOTES...
Page 18 SERVICE NOTES...
Page 20 AL-680-3-09...

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Al-680