ACI Hoist & Crane MH User manual

Mechanics Hoists
Mechanics Hoists PAGE: 1
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
OPERATION MANUAL
This operation manual is intended as an instruction manual for trained
personnel who are in charge of installation, maintenance, repair etc.
Version # MH-0214
Before equipment use, please read this operation manual
carefully.

Mechanics Hoists PAGE: 2
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information

Mechanics Hoists PAGE: 3
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
TABLE OF CONTENTS
1.0 WARRANTY .............................................................................................................................................................. 5
2.0 SAFETY PRECAUTIONS........................................................................................................................................... 6
2.1 Safety Alert Symbols...................................................................................................................................... 6
3.0 INSTALLATION......................................................................................................................................................... 7
3.1 Unpacking ..................................................................................................................................................... 7
3.2 Pre-installation Checks .................................................................................................................................. 7
3.3 Power Supply System.................................................................................................................................... 7
3.4 Connection to the Electrical Supply ............................................................................................................... 8
3.5 Mounting the Hoist ........................................................................................................................................ 8
3.6 Hook and Eye Suspension Hoists.................................................................................................................. 8
3.7 Load Chain.................................................................................................................................................... 8
3.8 Load Chain Lubrication.................................................................................................................................. 8
3.9 Chain Container............................................................................................................................................. 9
3.9.1 Installation of Standard Chain Container.......................................................................................... 9
4.0 OPERATION............................................................................................................................................................ 10
4.1 Test and Operational Checks........................................................................................................................10
4.2 Operation Personnel.....................................................................................................................................11
4.3 Product Warnings .........................................................................................................................................11
4.4 Product Cautions..........................................................................................................................................12
5.0 INSPECTION........................................................................................................................................................... 14
5.1 General.........................................................................................................................................................14
5.2 Inspection Classification ...............................................................................................................................14
5.3 Frequent Inspection......................................................................................................................................15
5.4 Periodic Inspection .......................................................................................................................................15
5.5 Occasionally Used Hoist...............................................................................................................................16
5.6 Inspection Reports........................................................................................................................................16
5.7 Inspection Methods and Criteria ...................................................................................................................16
5.8 Chain Inspection...........................................................................................................................................18
6.0 MAINTENANCE AND REPAIR................................................................................................................................ 19
6.1 Cutting the Chain..........................................................................................................................................19
6.2 Lubrication....................................................................................................................................................19
6.3 Replacing Gear Brakes & Oil.........................................................................................................................20
6.4 Testing .........................................................................................................................................................21
7.0 TROUBLESHOOTING............................................................................................................................................. 22
8.0 WIRING DIAGRAM ................................................................................................................................................. 23
9.0 DIMENSIONS & SPECIFICATIONS........................................................................................................................ 24
10.0 EXPLODED VIEWS & PARTS LISTS..................................................................................................................... 26

Mechanics Hoists PAGE: 4
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
10.1 Repair Parts –Ordering Instructions............................................................................................................26
10.2 Exploded View: MH-005 & MH-010 .............................................................................................................27
10.3 Exploded View: MH-020..............................................................................................................................28
10.4 Parts List: MH-005, MH-010, & MH-020 .......................................................................................................29
10.5 Exploded View: MH Pendant.......................................................................................................................32
10.6 Parts List: MH Pendant ...............................................................................................................................33

Mechanics Hoists PAGE: 5
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
1.0 WARRANTY
Every product is thoroughly inspected and tested before it is shipped from the factory. If any problem develops within
one year, return the product prepaid to the factory. If an inspection reveals that the problem is caused by defective
workmanship or material, repairs will be made without charge and the product will be returned with the shipping prepaid.
Excluded Items
This warranty does not cover:
Deterioration caused by normal wear, abuse, chemical or abrasive actions, improper 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.
Remarks
EXCEPT AS STATED HERE, ACI MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES
FOR A PARTICULAR PURPOSE.
Alterations or modifications of equipment and use of non-factory repair
parts can lead to dangerous operation and injury.
To avoid injury:
DO NOT alter or modify equipment.
DO NOT use equipment to lift, support or otherwise transport people.
DO NOT suspend unattended loads over people.

Mechanics Hoists PAGE: 6
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
2.0 SAFETY PRECAUTIONS
2.1 Safety Alert Symbols
Throughout this manual are steps and procedures that can prevent hazardous situations, the following symbols are used
to identify the degree or level of hazard seriousness.
DANGER, WARNING AND CAUTION NOTICE
Symbol
Description
Danger
Indicates an imminently hazardous 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, operation or maintenance
information which is important but not directly hazard
related.
Failure to read and comply with any of the limitations noted in this manual can result in serious bodily
injury or death, and/or property damage.

Mechanics Hoists PAGE: 7
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
3.0 INSTALLATION
3.1 Unpacking
Once package has been opened, carefully inspect the hoist frame, hooks, chain and control station for damage that may
have occurred during shipment. If damage is found please contact your ACI representatives immediately at, toll free
1-866-424-6478.
Make sure to check that the power supply to which the hoist is to be connected matches the information shown on the
identification plate located on the bottom of the hoist.
Before using the hoist, fill in the information below:
Model Number:_________________________
Serial Number: _________________________
Purchase Date: ________________________
3.2 Pre-installation Checks
Check for transit damage.
Check that all fasteners and joints are tight and secure.
Check the capacity of the lifting unit and bottom block.
Check that all external wiring is in good order.
Check that the load chain is in good order.
3.3 Power Supply System
To insure proper operation, to avoid damage to the hoist and electrical system, and to reduce the risk of electrical shock
or fire, the branch circuit supplying power to the hoist must:
Be in accordance with the National Electrical Code (ANSI/NFPA-70) and applicable National, State and Local
codes.
Effectively ground the hoist in accordance with the National Electrical Code and other applicable codes. Proper
grounding provides a path with the least resistance for the electrical current to travel reducing the risk of
electrical shock. The standard power cord is equipped with a three prong plug, used with our 115V-1PH-60HZ
unit. Make sure that the receptacle opening that receives the longest prong is properly grounded.
Have ample capacity to prevent excessive voltage drop during starting and operation. When determining the size
of branch circuit components and conductors, special consideration should be given to the starting current
amps (approximately three times that shown on the hoist identification plate) and the length of the conductors.
As a minimum, the system should be rated for 20 amps and the system should have #14 AWG or larger, wiring.
Operating a unit with obvious external damage may cause load to
drop and could result in personal injury and/or property damage.
To avoid injury: Carefully check unit for external damage prior to
installation.

Mechanics Hoists PAGE: 8
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
Include slow blow type fuses or inverse trip time circuit breakers to permit the hoist to start and accelerate the
load.
Include a disconnecting means capable of being locked in the ‘open’ position.
3.4 Connection to the Electrical Supply
An adequate supply system is required along the total length of travel (where appropriate). The supply voltage and
frequency, at which the hoist operates, is marked on the motor rating plate. It is imperative to check before connecting
the unit that these figures correspond with those of the supply voltage.
3.5 Mounting the Hoist
Hang the hoist from its intended support. The structure used to support the hoist must have sufficient strength to
withstand several times the load amount. If you are not sure of the weight the structure can hold, consult a registered
engineer and the local building codes.
3.6 Hook and Eye Suspension Hoists
The suspension point should be of a correct size to admit the top hook or eye of the hoist and allow it to rest properly on
the saddle. It must be adequate to support the hoist while it is being operated at its maximum capacity (safe working
load).
3.7 Load Chain
The chain should feed smoothly into and away from the hoist and hook block (¼ ton and 1 ton). If the chain binds, jumps
or is noisy, First clean and lubricate the chain, if trouble persists inspect chain and mating parts for wear, distortion and
other damages.
3.8 Load Chain Lubrication
Always lubricate load chain weekly or more frequently depending on severity of service. Lubricate load chain with a light
coat of Lubriplate Bar and Chain Oil 10-R (Fiske Bros. Refining Co.) or equal lubricant. Be sure the lubricant reaches the
bearing surfaces between the links. Remove the excess oil from the chain.
Used motor oils contain unknown carcinogenic materials. Never use used motor oils as a chain
lubricant. Only use Lubriplate Bar and Chain Oil 10-R or equal lubricant as a lubricant for the
load chain.
Suspending the hoist from an inadequate support could allow the hoist and load to fall
and cause personal injury and/or property damage. Make sure that the structure has
sufficient strength to withstand several times the hoist and its rated load amount. Using
the upper hook, hang the hoist from the support. Make sure the hoist is solidly held in the
uppermost part of the hook arc and the latch is tightly against the hook tip.

Mechanics Hoists PAGE: 9
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
3.9 Chain Container
For installations where the slack chain hanging from the hoist may be objectionable or hazardous, the use of a chain
container is recommended.
3.9.1 Installation of Standard Chain Container
1. Remove both bolts from the chain container mounting bracket (see Figure 3.9.1.1).
2. Attach the chain container to the bracket.
3. Reinsert the bolts.
Figure 3.9.1.1
Do not attempt to store more chain in the chain container than what is specified for
the hoist or serious damage to hoist may result and hazardous conditions may be
created.

Mechanics Hoists PAGE: 10
Model MH MH-0214
2721 NE 4th Ave Pompano FL 33064| [phone] Visit WWW.ACIHOIST.COM for the most current information
4.0 OPERATION
4.1 Test and Operational Checks
On completion of installation, but before the hoist is put into regular service, the following procedure should be carried
out:
Record the hoist’s Code, Lot and Serial Number from the name plate on the hoist.
Check that the hoist is properly installed to either a fixed point or trolley, whichever applies.
If hoist is installed on a trolley, ensure that:
The trolley is properly installed on the beam.
The stops for the trolley are correctly positioned and securely installed on the beam.
Isolate the power supply.
Check that all mechanical and electrical joints and connections are tight and secure.
Check that all nuts, bolts and split pins (cotter pins) are securely fastened.
Confirm proper operation:
Before operating read and become familiar with this manual.
Before operating check to ensure that the hoist and trolley meet the Inspection, Testing and Maintenance
requirements of ANSI/ASME B30.16.
Before operating check that nothing will interfere with the full range of the hoist’s (and trolley’s) operation.
Switch on the power supply.
Run lightly with no load, throughout the full extent of the hoist and check that the operation is smooth at all times.
Check the operation of the hoist brake, run under light load and full load conditions.
Check supply voltage before everyday use. If the voltage varies more than 10% of the
rated value, electrical devices may not function normally.
Confirm the adequacy of the rated capacity for all slings, chains, wire ropes and
all other lifting attachments before use. Inspect all load suspension members for
damage prior to use and replace or repair all damaged parts.