ACI Hoist & Crane WR User manual

Wire Rope Hoists
WIRE ROPE HOIST
Model WR
WR-0214 Scan QR Code with
ACI Hoist & Crane |2721 NE 4th Ave Pompano FL 33064 | 954.367.6116 SmartPhone to view our website.
OPERATION MANUAL
This operation manual is intended as an instruction manual for trained
personnel who are in charge of installation, maintenance, repair etc.
Hoist Serial Number: __________________________________________
Date Purchased: ______________________________________________
Before equipment use, please read this operation manual
carefully.

Wire Rope Hoist PAGE: 2
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information

Wire Rope Hoist PAGE: 3
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information

Wire Rope Hoist PAGE: 4
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
Table of Contents
1.0 WARRANTY ...............................................................................................................................................................7
2.0 SAFETY PRECAUTIONS............................................................................................................................................8
2.1 Safety Alert Symbols ...........................................................................................................................................8
2.2 Important Information and Warnings..................................................................................................................10
2.3 General Safe Operation Requirements ..............................................................................................................11
3.0 GENERAL DESCRIPTION .......................................................................................................................................13
3.1 General .............................................................................................................................................................13
3.2 Lifting Mechanism .............................................................................................................................................14
3.3 Trolley Traveling Mechanism .............................................................................................................................15
3.4 Optional Items...................................................................................................................................................17
3.5 Model Numbering..............................................................................................................................................18
4.0 INSTALLATION........................................................................................................................................................19
4.1 Prior to Installing Hoist.......................................................................................................................................19
4.2 Installation of Hoist ...........................................................................................................................................20
4.3 Installation of Base Mount Electric Hoists ..........................................................................................................22
4.4 Monorail Track ..................................................................................................................................................24
4.5 Adjusting trolley width and Installing Hoist Trolley on Beam ..............................................................................24
4.6 Low Headroom Hoist Trolley .............................................................................................................................25
4.7 Connecting Power Supply to Hoist ....................................................................................................................27
4.8 Before Operating the Hoist: ...............................................................................................................................28
4.8.1 Checking the end limit switch function ..................................................................................................................28
4.8.2 Adjusting the lever system actuating the end limit switch ...................................................................................... 29
4.8.3 Checking the Lubrication of the Electric Hoist ........................................................................................................29
4.8.4 Hoist Load Test ..................................................................................................................................................... 29
5.0 OPERATION.............................................................................................................................................................31
5.1 General Information...........................................................................................................................................32
5.2 General DO’S and DO NOT’S............................................................................................................................32
5.3 Before Operating the Hoist and Applying the Load ............................................................................................33
5.4 While Operating the Hoist and Moving the Load................................................................................................33

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Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
5.5 When Parking the Load .....................................................................................................................................34
5.6 Before Each Shift or Before the First Time the Hoist is to be Used Each Shift.....................................................34
6.0 MAINTENANCE AND INSPECTION PROCEDURES...............................................................................................35
6.1 Prior to maintenance or inspection ....................................................................................................................35
6.2 Inspection .........................................................................................................................................................36
6.3 Recommended Inspection and Maintenance Plan.............................................................................................38
6.3.1 Daily inspections by operator ................................................................................................................................ 38
6.3.2 Frequent and periodic inspections .........................................................................................................................40
6.4 Tests .................................................................................................................................................................42
6.4.1 Operational Test...................................................................................................................................................42
6.4.2 Load Test:............................................................................................................................................................. 45
6.5 Repair ...............................................................................................................................................................46
6.6 Lubrication and adjustment ...............................................................................................................................47
6.7 Maintenance and Adjustment of Motor Brake ....................................................................................................51
7.0 TROUBLESHOOTING..............................................................................................................................................53
8.0 WIRING DIAGRAMS ................................................................................................................................................54

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Model WR
WR-0214
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Wire Rope Hoist PAGE: 7
Model WR
WR-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.

Wire Rope Hoist PAGE: 8
Model WR
WR-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.

Wire Rope Hoist PAGE: 9
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
These general instructions deal with the normal installation, operation, and maintenance situations
encountered with the equipment described herein. The instructions should not be interpreted to
anticipate every possible contingency or to anticipate the final system, crane, or configuration that
uses this equipment.
This manual includes instructions and parts information for a variety of hoist types. Therefore, all
instructions and parts information may not apply to anyone type or size of specific hoist. Disregard
those portions of the instructions that do not apply.
Record hoist serial number on the front cover of this manual for identification and future reference
to avoid referring to the wrong manual for information or instructions on installation, operation,
inspection, maintenance, or parts.
Use only ACI authorized replacement parts in the service and maintenance of this hoist.
It is the responsibility of the owner/user to install, inspect, test, maintain, and operate a hoist in
accordance with ASME B30.16, Safety Standard for Overhead Hoists, OSHA Regulations, and
ANSIINFPA 70, National Electrical Code. If the hoist is installed as part of a total lifting system, such
as an overhead crane or monorail, it is also the responsibility of the owner/user to comply with the
applicable ASME B30 volume that addresses that type of equipment used in the system.
Further, It is the responsibility of the owner/user to have all personnel that will install, inspect, test,
maintain, and operate a hoist read the contents of this manual and applicable portions of ASME
B30.16, Safety Standard for Overhead Hoists, OSHA Regulations, and ANSIINFPA 70, National
Electrical Code. If the hoist is installed as part of a total lifting system, such as an overhead crane,
the applicable ASME B30 volume that addresses that type of equipment must also be read by all
personnel. Any ANSI Standards referenced in this manual may be obtained from the American
National Standards Institute, 1430 Broadway, New York, New York 10018.
This manual contains information for safe operation of an overhead hoist. Taking precedence over any
specific rule, however, is the most important rule of all "USE COMMON SENSE." Operation of an
overhead hoist involves more than operating the controls. The operator must consider and anticipate the
motions and actions that will occur as a result of operating the controls.

Wire Rope Hoist PAGE: 10
Model WR
WR-0214
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2.2 Important Information and Warnings
Equipment described in this manual is not designed for and should not be used for lifting, supporting, or
transporting humans.
To ensure the good working order and reliable operation of your hoist keep strictly to the requirements of the
maintenance and operation given in this Manual.
Keep strictly to the requirements for safe operation in order to prevent dangers from the personnel and damages
of the electric hoist.
The repairs shall be furnished only with spare parts supplied by the manufacturer.
The connection of the electric hoist with the power supply shall be furnished only by a qualified electrician.
Assemblage and putting the electric hoist into use shall only be done by qualified persons, authorized by ACI
Hoist and Crane.
Modifications to upgrade, rerate, or otherwise alter this equipment shall be authorized only by the original
equipment manufacturer or qualified professional engineer.
Equipment described in this manual may be used in the design and manufacture of cranes or monorails.
Additional equipment or devices may be required for the crane or monorail to comply with applicable crane
design and safety standards. The crane designer, crane manufacturer, or user is responsible to funish these
additional items for compliance. Refer to ASME B30.17, Safety Standard for Top-Running Single Girder Cranes;
ASME B30.2 Safety Standard for Top-Running Double-Girder Cranes; and ASME B30.11 Safety Standard for
Underhung Cranes and Monorails. If a below-the-hook lifting device or sling is used with a hoist, refer to ASME
B30.9, Safety Standard for Slings, or ASME B30.20, Safety Standard for Below-the-Hook Lifting Devices.
Hoists and cranes, used to handle hot molten material may require additional equipment or devices. Refer to
ANSI Z241.2, Safety Requirements for Melting and Pouring of Metals in the Metalcasting Industry.
The hoists are not designed to operate in chemically aggresive and explossive environment.
Failure to read and comply with any of the limitations noted herein can result in serious bodily injury or death,
and/or property damage.
Working in or near exposed energized electrical equipment presents the danger of electric shock.
Hazardous voltages are present in the control enclosure, other electrical components, and
connections between these components.
Before performing any mechanical or electrical maintenance on the equipment, disconnect the main
switch supplying power to the equipment; and implement lockout/tagout procedure. Refer to ANSI
z244.1, personnel protection - lockout/tagout of energy sources.
DO NOT operate the equipment without control enclosure cover or covers in place.
Only trained and competent personnel should inspect and repair this equipment.

Wire Rope Hoist PAGE: 11
Model WR
WR-0214
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2.3 General Safe Operation Requirements
Read and observe the instructions and warnings contained in this manual. Read and observe any instructions
and warning tags attached to the hoist.
Check for any damage to the hoist during shipment. If any damage has occurred, place a claim with the carrier.
DO NOT install a damaged hoist.
Locate any vent plugs attached to or included with the hoist and trolley. Remove solid shipping plug or plugs
and replace with a vent plug.
Check wire rope for damage and spooling on drum. Be sure rope is properly seated in drum grooves and
sheaves. Make sure both of rope ends are tightly secured.
After each rope replacement as well as after repair and reassembling of the electric hoist check the phasing and
the limit switch adjustment for upper and lower position of the loading hook.
Be certain that Power supply to hoist and trolley has the same voltage, frequency, and phase that are specified
on the hoist and trolley nameplate.
At reaching the maximum permissible axial stroke of the electric motor rotor, readjust the brake.
While carrying maintenance and repair activities for electric repairs/maintenance, make sure that there is no load
on the hook; the power supply switch is turned off and unauthorized switching on is eliminated.
Check the loading hook for cracks and deformations as well as the good working order of the fuse for self-
release of the load.
Check the bearing screw joints to avoid them eventually self-unwind.
Check the reliable connection of cable protective conductors to the grounding terminals in the electric board as
well as the transformer and the electric.
If hoist has a trolley, check that the crane bridge beam or monorail beam is level, straight, and clean. Check that
trolley stops are installed, or install trolley stops, at the open end or ends of the beam to prevent the trolley from
traveling off the beam. Trolley stops that engage trolley wheels are not recommended. Check that trolley stops
will prevent overhanging parts of the hoist and trolley from interfering with other equipment beyond the ends of
the beam or monorail.
In all cases of disassembly of the push button cover the outer surfaces of the metal screws which fasten its
housing with electrical insulating material.
Daily, before starting work, check the operation of the brake and the limit switch.
Do not use the limit switch as an operational one in any case.
Before installing, removing, inspecting, or performing any maintenance on a hoist, the main switch
shall be de-energized. Lock and tag the main switch in the de-energized position in accordance
with ANSI Z244.1.
Follow other maintenance procedures outlined in this manual and applicable ASME B30 volumes.
Additional WARNINGS are listed in various portions of this manual. Personnel shall read and follow
these WARNINGS. Failure to read and comply with these WARNINGS as well as other instructions
or any limitations noted in this manual and applicable ASME B30 volumes could result in serious
bodily injury or death, and/or property damage.

Wire Rope Hoist PAGE: 12
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
Do not leave the lifted load out of sight.
Do not exceed the rated capacity.
Do not lift loads at an angle and do not drag them.
Do not try to detach firmly fixed loads (e.g. frozen to the ground)
Do not change or modify the electric diagram. Do not use the push buttons and limit switches for other purposes
but those indicated.
End positions in vertical and horizontal movement can be used only if an operating limit switch is provided.
Equipment covered herein is not designed or suitable as a power source for lifting or lowering persons. Lifting
and moving of loads over the personnel is not allowed.
Warning signs and barriers shall be utilized on the floor beneath the crane or area where the hoist will be
installed.
Damage to the hoist, a dropped load, and injury may result if limit switches fail due to improper
use.
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.

Wire Rope Hoist PAGE: 13
Model WR
WR-0214
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3.0 GENERAL DESCRIPTION
3.1 General
ACI wire rope hoists are designed to be operated as independent load-lifting devices or as units to be implemented in
other material handling equipment. The hoists are either stationary or movable, designed to operate indoors or outdoors
under shelter. The operation and overloading conditions are stated in the passport of the unit. At the present ACI offers
following wire rope models:
BM Base Mount
DG Double Girder
LH Low Headroom
DL Double Girder Low Headroom
DN Double Girder Nested
MS Motorized Standard Headroom Trolley
Generally, the electric hoist consists of two modules - lifting mechanism and travelling mechanism (Trolley). The movable
hoists are manufactured with an integral trolley while the stationary hoists (Base/Lug Mount) are fixed to a plane and
consist only of a lifting mechanism.
Regarding the mutual allocation of the lifting mechanism and the travelling mechanisms both normal headroom and low
headroom modifications are available. On hoists with normal headroom the lifting mechanism is situated under the
travelling mechanism while the lifting mechanism on the low headroom hoists are situated sideways of the travelling
mechanism.

Wire Rope Hoist PAGE: 14
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
3.2 Lifting Mechanism
The lifting mechanism includes following parts (Figure 3.2.1):
Figure 3.2.1
1. Planetary reducer
2. Body housing
3. Drum
4. Clutch
5. Rope guide
6. Hook- block
7. Electric motor with a built-in brake
Planetary reducer
A two-stage planetary reducer is placed outside the drum. Gear wheels are heat treated and are made from high-grade
steel. They are oil-lubricated and camped on rolling ball-bearings.
Body
The housing is an integral welding structure formed by two steel flanges connected with profiled longitudinal beams.
Drum
A hallow shaft connects planetary reducer to the drum. The drum is supported by rolling bearings which prevent groove
connection between the drum and the reducer.
Elastic Clutch
An elastic clutch minimizes resistance of axial shift of the rotor and transmits the electric motor torque to the gear box.
Rope guide

Wire Rope Hoist PAGE: 15
Model WR
WR-0214
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The rope guide is essential to extend the cable life and reduce maintenance costs. The rope guide consists mainly of two
parts –a guide nut and a tensioning spring which ensures that the rope runs firmly on the rope drum. The rope guide is
designed to allow for a ± 4° vertical wire rope deviation. The rope guide actuates the upper and lower end limit switches.
No special tools are required for the replacement of the rope guide.
Hook- block
A hook block allows for a considerable amount of flexibility and safety in lifting operations. Semi-lids of the block cover
the rollers and have the necessary hardness and strength against impact with stationary solid objects.
Electric motor with a built-in brake
The motor used in ACI hoist is a TEFC (Totally Enclosed Fan Cooled) conical rotor construction, 3 phase induction type.
The motor is constructed with a small fan on the rear shaft of the motor, covered by a housing. This fan draws air over
the motor fins, removing excess heat and cooling the motor. The enclosure is "Totally Enclosed". This ordinarily means
that the motor is dust tight. This fan-cooled externally mounted, tapered rotor motor is designed for high duty cycle
factors.
Energizing the motor causes the axial forces in the magnetic field to pull in the rotor into its correct running position and it
operates like a normal induction motor. When the motor is shut off, the return spring pushes the rotor assembly, including
the brake disc back into the conical brake surface, braking the motor and the load. This safe and simple braking
arrangement which does not require additional coil or electric circuitry is very reliable and needs very little or almost no
maintenance. Conical rotor brake has only one moving part, which is very easily accessible, and serviceable.
Control Box
Control box is a separate assembly unit including circuit closers for control of the lifting mechanism and traveling
mechanism, reducing transformer, push button and some other elements concerning special executions (main circuit
closer, rectifier for the auxiliary brake, electronic block for the load limiter, etc.).
Standard hoist and trolley motors are reconfigurable for 230 volt or 460 volt, three phase, 60 Hz. operation. Hoist and
trolley with other voltages and frequencies will be provided as an option. The voltage used in the operating circuit is safe
110 V obtained by means of reducing transformer. Control is executed by pendant push button in which electric and
mechanical interlock among the buttons for several of movements of the lifting mechanism and the electric trolley is
provided.
For protection against short circuit in the operating circuit a safety fuse is provided. On customer's request two fuses can
be provided. In the same circuit the limit switch is connected for both directions of movement of the hook. When the first
stage of the switch for a given direction is actuated the movement of the hook in the opposite direction is not blocked
and actuating the second stage blocks the movement in both directions because the main contactor switches off. A
latchkey for switching of the operating circuit is provided in the electrical equipment of the electric hoist.
3.3 Trolley Traveling Mechanism
Hoist can be suspended to a trolley to provide horizental motion along a beam. Suspension of hoist from a trolley can be
as followed:
Stiff suspension - normal headroom at number of rope falls 2/1 and 4/1.The lifting mechanism is assembled
under the travelling mechanism (Figure 3.3.1A)
Swinging - the lifting mechanism swings in certain limits around an axis parallel to the monorail track (Figure
3.3.1B)
Joint - in addition apart from the lifting mechanism the travel wheels pairs can rotate around a vertical axis
(Figure 3.3.1B I)

Wire Rope Hoist PAGE: 16
Model WR
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Stiff suspension - 2/1 and 4/1, low headroom –the lifting mechanism is assembled laterally to the rail track. Thus
decreasing of the headroom is achieved (Figure 3.3.2)
Lifting mechanism with double rail trolley (Figure 3.3.3)
Construction of a normal headroom hoist is shown in figure 2. It consists of: electric motor (2), gear box (3), geared
wheel (4) and plain wheel (5).
The lifting mechanism (1) is fixed to the trolley by the frame (8). Some electric hoists are provided with trolleys (7 and 9).
Figure 3.3.1
For the low headroom hoists (Figure 3.3.2) a counterweight box is provided (6).
Figure 3.3.2
Double rail ( Double Girder) trolley (Figure 3.3.3).

Wire Rope Hoist PAGE: 17
Model WR
WR-0214
2721 NE 4th Ave Pompano FL, 33064 | [phone] Visit WWW.ACIHOIST.COM for the most current information
Figure 3.3.3
3.4 Optional Items
Following devices are available as optional features on all complete hoists.
Latch Key
Intended to protect the hoist against unnecessary operation.
Thermo-protection
Bi-metallic, automatic thermostats are built into the motor windings- one per each phase and winding. This thermostat
will cause the motor control to be de-energized when the temperature of the motor winding exceeds a predetermined
temperature limit. It provides full running protection against motor overheating. The motor control will continue to be de-
energized and the only possible motion is lowering until the temperature of the winding is reduced below the
temperature cutoff point and then the hoist will be operate as before.
Load Limiter
An overload cutoff device is designed to interrupt the hoist lifting circuit if the load exceeds more than 10% of the rated
capacity.
Emergency button
An emergency button switches off the main contactor when emergency situation accur.
If the thermo-protection actuates and the lowering of the load is indispensable, it must be done at
the higher lowering speed with minimum switching.

Wire Rope Hoist PAGE: 18
Model WR
WR-0214
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Capacity in Tons
006 - 3 Ton
010 - 5 Ton
015 - 7.5 Ton
020 - 10 Ton
030 - 15 Ton
040 - 20 Ton
3.5 Model Numbering
WR BM 010 16 S 020 41
Trolley Travel Speed (if applicable):
1: Slow
2: Fast
Parts:
2: 2 Part
4: 4 Part
Lifting Height in Feet
S: Single Reeved
D: Double Reeved
Lifting Speed FPM
BM: Base Mount
DG: Double Girder
LH: Low Headroom
DL: Double Girder Low Headroom
DN: Double Girder Nested
Wire Rope
Example of Model Number: WRBM01016S0204
Wire Rope Hoist, Base Mount, 5 Ton, 16 FPM, Single Reeving, 20 ft. Lift, 4 Part

Wire Rope Hoist PAGE: 19
Model WR
WR-0214
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4.0 INSTALLATION
ACI electric hoists are lubricated and tested before being shipped from the factory. To place a hoist in service, install
onto beam by adjusting appropriately for the flange width, connect to electrical service and perform pre-operation tests
and checks.
4.1 Prior to Installing Hoist
Read and observe the instructions and warnings contained in this manual. Read and observe any instructions
and warning tags attached to the hoist.
Locate any vent plugs attached to or included with the hoist and trolley. Remove solid shipping plug or plugs.
Check that the crane, monorail, or other supporting structure where the hoist will be installed has a load rating
capable to handle loads equal to the rated load capacity of the hoist.
If hoist is to be installed on an existing crane, the crane should be run to a location where It will cause the least
interference with other cranes and operations in the area; and all controllers placed in the off position.
If the hoist is to be installed on an existing crane, and the crane runway remains energized because of other
cranes operating on the same runway; stops or a signal person(s), located full-time at a visual vantage point for
observing the approach of an active crane(s), shall be provided to prohibit contact by the active crane(s) with the
idle crane.
If personnel will be required to work on the runway during installation, a guard or barrier shall be installed
between adjacent runways for the length of the established work area to prevent contact between persons
performing installation and a crane on the adjacent runway.
If personnel are required to work at elevations in excess of 6 feet above floor or ground level, a fall prevention
policy and procedure shall be developed, documented, and implemented prior to installation being started.
Only qualified personnel with proper supervision shall install the hoist on the monorail and
perform the final pre-operation inspection.
Before installing, removing, inspecting, or performing any maintenance on a hoist, the main switch
shall be de-energized. Lock and tag the main switch in the de-energized position in accordance
with ANSI Z244.1.
Follow other maintenance procedures outlined in this manual and applicable ASME B30 volumes.
Additional WARNINGS are listed in various portions of this manual. Personnel shall read and follow
these WARNINGS. Failure to read and comply with these WARNINGS as well as other instructions
or any limitations noted in this manual and applicable ASME B30 volumes could result in serious
bodily injury or death, and/or property damage.
Prior to installing the hoist check for any damage to the hoist during shipment.
DO NOT install a damaged hoist.

Wire Rope Hoist PAGE: 20
Model WR
WR-0214
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Check power supply that will be furnished to the hoist and trolley. It must be the same as shown on the hoist and
trolley serial plate.
Check wire rope for damage and spooling on drum. Be sure rope is properly seated in drum grooves and
sheaves. Make sure both of rope ends are tightly secured.
After each rope replacement as well as after repair and reassembling of the electric hoist check the phasing and
the limit switch adjustment for upper and lower position of the loading hook.
While carrying maintenance and repair activities for electric repairs/maintenance, make sure that there is no load
on the hook; the power supply switch is turned off and unauthorized switching on is eliminated.
Check the loading hook for cracks and deformations as well as the good working order of the fuse for self-
release of the load.
Check the bearing screw joints to avoid them eventually self-unwind.
Check the reliable connection of cable protective conductors to the grounding terminals in the electric board as
well as the transformer and the electric.
If hoist has a trolley, check that the crane bridge beam or monorail beam is level, straight, and clean. Check that
trolley stops are installed, or install trolley stops, at the open end or ends of the beam to prevent the trolley from
traveling off the beam. Trolley stops that engage trolley wheels are not recommended. Check that trolley stops
will prevent overhanging parts of the hoist and trolley from interfering with other equipment beyond the ends of
the beam or monorail.
4.2 Installation of Hoist
Fixing the Rope
Depending on the size of the electric hoist and the conditions of packing, the hook-block may be delivered disassembled
from the rope. After installing the hook-block, the rope must be tight and shouldn’t be twisted. Fix the rope ends as in the
following order:
Fixing the rope end to the body (See Figure 4.2.1)
Fix the rope of diameter “d” in the wedge bush 2, so that its bearing section would lie on the vertical side of the wedge 1.
To secure the rope ends from falling out, a clamping element 3 is mounted by nuts at the end of the rope.
The distance between the rope end and the wedge bush 2 shall be at least 3.9 inches the maximum distance is:
9.8 inches for 0.5 and 1 ton hoist capacity
13.8 inches for 2, 3, 4 and 5 ton hoist capacity
17.7 inches for 8 ton hoist capacity
The distance between the clamp 3 and the rope end shall be 1.97 inches.
The main switch (disconnect) supplying power to the crane, monorail, or other piece of
equipment where the hoist is to be installed, shall be de-energized. Lock and tag the main
switch in the de-energized position in accordance with ANSI Z244.1.