ACI Hoist & Crane MLH-005 Скачать руководство пользователя

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Lever Hoists

PAGE: 7

Model MLH

MLH-005 & MLH-010

5.2 Hoist Operation: Free Chain

5.2.1 Principle

•

Free chaining allows the load chain to be moved freely because the brake is released under no load situations.

•

Pulling the free knob actuates the internal spring to release the mechanical brake allowing the load chain to be pulled in

either direction to the desired length.

•

The brake is engaged during lowering or lifting the load.

5.2.2: Operation

•

DO NOT

operate the hoist Free Knob while a load is applied to the hoist.

•

DO NOT

touch the hoist Free Knob during lifting or lowering of the load.

•

ALWAYS

check that the selector is placed in the proper position.

•

Set the Selector to the “N” position. The Selector is located under the Free Knob on the hand lever.

•

Pull the Free Knob pout. The Free Knob turns counterclockwise and “snaps” out.

•

Pull the load chain to move the hook to the desired position.

•

DO NOT

pull the chain suddenly in the free chain mode. Excessive pulling may set the brake and not allow the load chain to

move. If this occurs the hoist must be reset.

•

To reset the hoist to operate, rotate the Free Knob clockwise while pulling lightly on the load side chain. Once slack is

removed, the Free Knob “snaps” in. This resets the brake and allows the hoist to be operated with the hand lever.

•

DO NOT

attempt to use the free-chain feature while there is any load on the hoist.

Table 5.2.2.1

Lever Hoist Operation

Selector Position

Lever Rotation

Load Movement

Clockwise

Lift

DOWN

Counterclockwise

Lower

Table 5.2.2.2

Signal Warnings

Signal Color

Load Status

Instructions

Green

Safe Load

Continue Operation

Red

Overload

DO NOT Continue Operation

Содержание MLH-005

Страница 1: ... HOIST OPERATION MANUAL This operation manual is intended as an instruction manual for trained personnel Responsible for the installation maintenance repair etc of this equipment Before equipment use please read this operation manual carefully Serial Number ______________________________ Date Purchased ____________________________ ...

Страница 2: ...Lifting and Lowering 6 5 2 Hoist Operation Free Chain 7 5 2 1 Principle 7 5 2 2 Operation 7 6 0 PRECAUTIONS WHILE OPERATING 8 6 1 Warnings 8 6 2 Attaching the Load 8 7 0 ROUTINE CARE INSPECTION AND MAINTENANCE 8 7 1 General 8 7 2 Inspection Classification 9 7 2 1 Frequent Visual Inspection 9 7 3 Frequent Inspection 10 7 4 Periodic Inspection 10 7 5 Inspection Schedule 10 7 6 Chain Inspection 11 7 ...

Страница 3: ...maintenance or excessive heat Problems resulting from repairs modifications or alterations made by people other than factory or ACI representatives If the product has been abused or damaged due to an accident If repair parts or accessories other than ACI equipment are used on the product they are warranted only to the extent that they are warranted by the manufacturer of said parts or accessories ...

Страница 4: ...s situation which if not avoided will result in death or serious injury and property damage Warning Indicates an imminently hazardous situation which if not avoided could result in death or serious injury and property damage Caution Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury or property damage Notice Notifies people of installation opera...

Страница 5: ...peration and or maintenance of the hoisting equipment should be familiar with the American National Standard ANSI B30 21 for guidelines on the safe operation of lever hoists That document contains rules on inspection requirements and records that may be required by some of the regulatory agencies 3 1 Hoist Construction The Steel Body Lever Hoist Puller is a dependable way to accurately position he...

Страница 6: ...ngs chains wire ropes and all other lifting attachments before use Inspect all load suspension members damage prior to use and replace or repair all damages parts Verify and correct all chain irregularities prior to operating the hoist Record the hoist s Model Number Serial Number from the plate on the hoist Ensure that the hoist is properly installed to a fixed point Ensure that all nuts bolts an...

Страница 7: ...on The Selector is located under the Free Knob on the hand lever Pull the Free Knob pout The Free Knob turns counterclockwise and snaps out Pull the load chain to move the hook to the desired position DO NOT pull the chain suddenly in the free chain mode Excessive pulling may set the brake and not allow the load chain to move If this occurs the hoist must be reset To reset the hoist to operate rot...

Страница 8: ... NOT OPERATE THE HOIST FROM AN OFF BALANCE POSITION OPERATOR SHOULD HAVE FIRM FOOTING OR BE OTHERWISE SECURED BEFORE OPERATING THE HOIST Check the hoist each time it is used by lifting the load just clear of its supports and checking to be sure that the load is secure in the hook and that the hoist brake is holding the load without slipping Never raise the hook block into the bottom of the hoist o...

Страница 9: ...o wear deterioration or malfunction The two general classifications are herein designated as FREQUENT and PERIODIC with respective intervals between inspections as defined below 7 2 1 Frequent Visual Inspection Frequent inspections are visual examinations by the operator or other designated personnel with interval per the following criteria Normal Service Monthly Heavy Service Weekly to Monthly Se...

Страница 10: ...d to secure the retaining members Evidence of damage or excessive wear of load and idler sheaves Evidence or worn glazed or oil contaminated friction disks worn pawls cams or ratchet corroded stretched or broken pawl springs in brake mechanism Evidence of damage to supporting structure Function label on hoist for legibility Warning label properly attached to the hoist and legible End connections o...

Страница 11: ...tore the hoist with the brake locked Loosen the brake by operating the hoist as if lowering a load Avoid leaving the hoist in a wet or corrosive environment Clean and dry the hoist before storage whenever it has been exposed to dirt or water Inspect the hoist for signs of wear damage or malfunctioning parts Do not return a defective hoist to a storage area without clearly marking it as defective 7...

Страница 12: ...e part Quarterly Chain Lubricate chain under normal usage Lubricate chain under heavy usage require to be lubricated more frequently Weekly 7 10 1 Recommended Lubricants Table 7 10 1 1 Recommended Lubricants Part Lubricant Gears bearings pawl pivot pin guide roller pin hook shanks and chain wheel treads Any good quality gear grease Chain Chain Lube Brake parts ratchet teeth Do not Lubricate The br...

Страница 13: ...mbly of the brake system Replace with new ones Disassemble and clean Assemble correctly Load dropped while lowering 1 Damaged friction discs 2 Foreign matter in the braking system Replace with new ones Disassemble and clean Jammed operating handle Over tightening of the brake Operate the lever hoist as if lowering a load Noises during hoisting and lowering operation Wear or deformation of the load...

Страница 14: ...columns of load chain 1 1 1 2 Handle pull rated loads lbs 60 66 75 83 Distance in A 5 83 6 81 7 87 7 87 B 3 43 3 90 4 41 4 41 C 5 20 5 71 7 83 9 06 D 10 94 14 88 15 28 15 28 E 1 1 1 3 1 6 1 7 Ø 1 40 1 67 1 97 2 09 H 13 0 15 7 20 5 25 2 Net weight lbs for 5 ft lift 15 21 24 0 45 6 62 0 Packing measurement in 15 x 5 x 6 7 18 9 x 5 1 x 7 9 21 8 x 7 3 x 8 9 21 8 x 7 9 x 8 9 Extra weight per feet of ex...

Страница 16: ... plate 12 Chain stripper 13 Stay bolt 14 Pin 15 Load sheave assembly 16 Load sprocket 17 Load Gear 18 Chain guide 19 Lever side plate assembly 20 Pawl spring 21 Pawl Item Part Name Description 22 Snap ring 23 Brake seat 24 Ratchet disc 25 Friction disc 26 Twisting spring 27 Brake plate 28 Bushing 29 Stop knob 30 Brake cover 31 Socket head screw and spring washer 32 33 Snap ring 34 Change over gear...

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