KITO EDIII Series User manual

OM-ED3ZZZ-CEE-03
OWNER’S (OPERATOR’S) MANUAL
AND SAFETY INSTRUCTIONS
FOR KITO ELECTRIC CHAIN HOIST
EDIII SERIES
ALWAYS SAVE THIS BOOK FOR FUTURE REFERENCE.
Original Instruction

CONTENTS
1. DEFINITIONS ........................................................................................................................................... 1
2. INTENDED PURPOSE ............................................................................................................................. 1
3. BEFORE USE ............................................................................................................................................ 1
3.1 Safety summary.......................................................................................................................................... 1
3.2 Safety instructions ...................................................................................................................................... 2
3.2.1 Before use ....................................................................................................................................... 2
3.2.2 While operation .............................................................................................................................. 2
3.2.3 After operation ................................................................................................................................ 3
3.2.4 Maintenance .................................................................................................................................... 3
3.2.5 Others .............................................................................................................................................. 3
4. MAIN SPECIFICATIONS......................................................................................................................... 4
4.1 Specifications ............................................................................................................................................. 4
4.2 Mechanical classification (Grade) and life ................................................................................................. 5
4.3 Specifications and dimensions ................................................................................................................... 6
4.4 Special features .......................................................................................................................................... 7
5. PREPARATION AND CHEKING BEFORE USE ................................................................................... 8
5.1 Packed contents .......................................................................................................................................... 8
5.2 Preparation and checking before use .......................................................................................................... 8
5.3 Before using, prepare and check the following five items. ........................................................................ 9
(1) Gear oil supply ..................................................................................................................................... 9
(2) Chain container assembly .................................................................................................................... 9
(3) Assembling push button cord and curled cord ................................................................................... 10
(4) Load chain lubrication ....................................................................................................................... 11
(5) Power supply cable specifications ..................................................................................................... 11
5.4 Installing trolley ....................................................................................................................................... 12
(1) MINI trolley ....................................................................................................................................... 12
(2) Installing trolley to rail....................................................................................................................... 13
(3) TS series trolley (480kig only) .......................................................................................................... 13
6. OPERATION ........................................................................................................................................... 14
6.1 Single speed type ..................................................................................................................................... 14
6.2 Dual speed type ........................................................................................................................................ 14
6.3 Dual speed cylinder type .......................................................................................................................... 15
6.4 Electric chain hoist with trolley ............................................................................................................... 16
7. INSPECTION ........................................................................................................................................... 16
7.1 Inspection classification ........................................................................................................................... 16
7.2 Occasionally used hoist ............................................................................................................................ 17
7.3 Inspection record ...................................................................................................................................... 17
7.4 Inspection method and judgement criteria ............................................................................................... 17
8. MAINTENANCE ..................................................................................................................................... 21
8.1 Gear lubrication........................................................................................................................................ 21
8.2 Load chain lubrication ............................................................................................................................. 21
8.3 Mechanical brake with friction clutch ...................................................................................................... 22
9. CONNECTION DIAGRAM .................................................................................................................... 22
9.1 Single speed type ..................................................................................................................................... 23
9.2 Dual speed type ........................................................................................................................................ 24
9.3 Dual speed cylinder type .......................................................................................................................... 25
10. TROUBLE SHOOTING AND SOLUTIONS ......................................................................................... 26
11. WARRANTY ........................................................................................................................................... 28
12. PARTS LIST ............................................................................................................................................ 29

— 1 —
1. DEFINITIONS
: indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
: indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
: indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury. It may also be used to alert against
unsafe practices.
WLL: indicates maximum mass (working load limit) which a hoist is designed to support in
general service.
2. INTENDED PURPOSE
This hoist has been designed for vertically lifting and lowering by means of the pendant push button
switches and cylinder switches and horizontally carrying loads by means of manual trolley under normal
atmospheric conditions of the work place.
This is a Class A product. In a domestic environment this product may cause radio interference, in which
case the user may be required to take adequate measures.
3. BEFORE USE
3.1 Safety summary
Danger exists when heavy loads are transported, particularly when the equipment is
not being used properly or is poorly maintained.
Because accidents and serious injury could result, special safety precautions apply to
the operation, maintenance and inspection of the KITO electric chain hoist EDIII
series.
NEVER use a hoist for lifting, supporting or transporting people.
NEVER lift or transport loads over or near people.
NEVER lift more than WLL which is shown on the hoist name plate.
ALWAYS let people around you know when a lift is about to begin.
ALWAYS read the operation and safety instructions.
Remember proper rigging and lifting techniques are the responsibility of the
operator. Check all applicable safety codes, regulations and other applicable
laws for further information about the safe use of your hoist.
DANGER
CAUTION
WARNING
WARNING
OVER LORD

— 2 —
3.2 Safety instructions
3.2.1 Before use
ALWAYS allow the instructed (trained in safety and operation) people to operate the hoist.
ALWAYS check the hoist before daily use.
ALWAYS make sure that the chain length is long enough for the intended job.
ALWAYS check that the hook latches work properly and replace missing or
broken hook latches.
ALWAYS check the brake before use.
ALWAYS use two hoists which each has WLL equal to or more than the load to be lifted whenever you
must use two hoists to lift a load.
ALWAYS use KITO original load chains marked “KITO”. KIRO shall not be responsible for any claims
or damages arising from the use of other chains.
ALWAYS check and keep oil to be on the surface of the load chain.
NEVER use a hoist without a hoist name plate.
NEVER use modified or deformed hooks.
NEVER use a hoist in explosive atmosphere.
3.2.2 While operation
ALWAYS make sure that the load is properly seated in the hook.
ALWAYS tighten the slack out of the chain and sling when starting a lift to prevent a sudden loading.
ALWAYS avoid excessive inching operation.
ALWAYS make sure the hoist motor completely stops before reversing.
ALWAYS use a hoist within the “Duty rating”, ED%.
ALWAYS make sure that Proper limit switch actuation ad motor stopping when the hook rises at upper
limit under no load.
ALWAYS make sure that No deformed, peeled and cracked cushion rubber.
ALWAYS make sure that No damaged chain spring (option), and minimum free length, 75mm (130mm),
of the chain spring.
Note: Initial free length of the spring 85mm (150mm). ( ): 60-240kg.
WARNING

— 3 —
NEVER dropping or releasing a load could result in death or serious injury. To avoid this hazard, do not
operate the bottom hook release mechanism (hook cam) when the hoist with cylinder-controlled
or optional detachable hook is under load.
NEVER operate unless the load is centered under the hoist.
NEVER use the hoist chain as a sling.
NEVER use a twisted, kinked, damaged or stretched load chain.
NEVER swing a suspended load.
NEVER support a load on the tip of the hook.
NEVER contact the load chain over an edge.
NEVER weld or cut a load suspended by a hoist.
NEVER use the hoist chain as a welding electrode.
NEVER operate a hoist if chain jumping or excessive noise occurs.
NEVER use the limit switch or friction clutch as limit switch regularly,
otherwise a hoist will be severely damaged to bring serious injury.
These devices are for emergency use only.
NEVER pull the push button cord.
NEVER handle the arm-fitting during the hoist operation.
3.2.3 After operation
NEVER leave a suspended load unattended, and/ or for an attended period of time.
NEVER throw or drop the hoist when carrying it.
3.2.4 Maintenance
ALWAYS let the qualified service personnel inspect the hoist periodically.
ALWAYS oil the load chain.
ALWAYS have KITO or an authorized dealer adjust the friction clutch.
NEVER splice, add and weld a load chain for extension.
NEVER touch live electrical parts.
3.2.5 Others
ALWAYS consult the manufacturer or your dealer if you plan to use a hoist in an excessively corrosive
environment (salt water, sea, air and/or acid, explosive environment or other corrosive
compounds, etc.)

— 4 —
4. MAIN SPECIFICATIONS
4.1 Specifications
The following specifications are common to all KITO electric chain hoists EDIII series.
Table 4-1 Specifications
Item
Detail
Working temperature range (

C
)
-20 to + 40
W
orking humidity range (%)
85 or less
Hoist
IP 54
Protection
Push button
IP 65
Cylinder switch
IP 44
Electric power supply
Single phase, 230V, 50Hz *
Noise level (dB)
83 (A scal
e)
Sound power level (dB)
94 (A scale)
Remarks: (1) Contact KITO or authorized KITO dealer for information on using the hoist outside the working
temperature or humidity range.
(2) Noise level were measured at a distance of 1m horizontally from the hoist during normal
operation.
(3) * The hoist can be also used for 220V-50Hz and 240V-50Hz, Single phase.

— 5 —
4.2 Mechanical classification (Grade) and life
Safety and life for electric chain hoists are guaranteed only when the said equipment is operated in
accordance with the prescribed grade.
KITO electric chain hoists EDIII series have been designed for grade 1Am in the FEM regulations (FEM
9.511).
Details are provided in Table 4-2.
Average daily operating time and total operating time are determined by load distribution.
Table 4-2 Mechanical classification
Load spectrum
(Load
distribution)
Definitions Cubic mean value Average daily
operating time (h)
Total operating
time (h)
1
(light)
Mechanisms or parts thereof,
usually subject to very small
loads and in exceptional
cases only to maximum
loads.
k ≤ 0.50 2-4 6300
2
(medium)
Mechanisms or parts thereof,
usually subject to small
loads but rather often to
maximum loads.
0.50 < k ≤ 0.63 1-2 3200
3
(heavy)
Mechanism or parts thereof,
usually subject to medium
loads but frequently to
maximum loads.
0.63 < k ≤ 0.80 0.5-1 1600
4
(very heavy)
Mechanism or parts thereof,
usually subject to maximum
or almost maximum loads.
0.80 < k ≤ 1.00 0.25-0.5 800
% operating time
Load spectrum 1
% operating time
Load spectrum 2
% operating time
Load spectrum 3
% operating time
Load spectrum 4

— 6 —
4.3 Specifications and dimensions
Power supply 230V-50Hz
Type Single speed type Dual speed type Dual speed cylinder type
Model ED06S ED10S ED18S ED16S ED24S ED48S ED06S ED10S ED18S ED16S ED24S ED48S ED06S ED10S ED18S ED16S ED24S
WLL (kg) 60 100 180 160 240 480 60 100 180 160 240 480 60 100 180 160 240
Motor output (W) 300 600 300 600 300 600
Intermittent
duty
% ED 30 20 30 30 20 30 30 20 30
Max. starting frequency
(Time per hour)
180 120 180 180 120 180 180 120 180
Rated Current (A) 230V 3 5 3 5 3 5
Lifting speed (m/min) High 20.1 12.5 7.7 19.2 12.9 6.7 20.1 12.5 7.7 19.2 12.9 6.7 20.1 12.5 7.7 19.2 12.9
Low - - - - - - 4 3 3 4 3 2 4 3 3 4 3
Standard lift (m) 3 3 1.8
Push button cord length: L (m) 2.5 2.5 -
Load chain diameter (mm) 4 4 4
Net weight (kg) 11.5 15.5 21(21.5)*1 12.0 16.0 21(21.5)*1 14.5 18.5
Min. distance between hooks: C (mm) 315 330 520 315 330 520 945 960
IP (Degree of protection) IP54 IP44
Insulation F
Dimensions (mm)
a 364 428 364 428 364 428
d 187 205 187 205 187 205
e 177 223 177 223 177 223
f 205 219 229 205 219 229 205 219
h 125 135 155 125 135 155 125 135
i 80 84 74 80 84 74 80 84
g 25 24 25 24 25
j 25 24 25 24 25
k 340 362 454 340 362 454 340 362
m 92 149 92 149 92
n 73 104 73 104 73
・ WLL: Indicates maximum mass (working load limit) which a hoist is designed to support in general service.
・ Control: Direct voltage control.
・ The lifting speed is equal to the average value of the lifting/ lowering speed at the rated load capacity. The speed will vary according to the load.
Actual power source voltage should not exceed max. allowable voltage: 264V
The lifting speed varies according to the actual power source voltage as shown in following table.
Single speed type and
Dual spee
d
type
Dual speed cylinder type
CAUTION

— 7 —
Relationship between power source voltage and lifting speed
Rated voltage
(V)
Actual power source
Voltage/Operation voltage (V)
Lifting speed (m/
m
in
)
300w
600w
60kg
100kg
180kg
160kg
240kg
480kg
220/220
19.3
11.9
7.3
18.3
12.4
6.1
230
220/230
20.1
12.5
7.7
19.2
12.9
6.4
240/240
21
13
8
20
13.5
6.7
4.4 Special features
(1) Brake
Both dynamic brake and mechanical brake provide high braking capability for the most sure way to stop the
load at the desired positions. The mechanical brake uses non-asbestos material.
(2) Hook and hook latch
Drop-forged heat treated hooks will not fracture but open slowly when over loaded excessively.
Built-in bearing assures easy swiveling of bottom hook. In addition, the hook latch adds another safety.
(3) Friction clutch
This hoist equips with friction clutch mechanism, specially developed by KITO, that causes the motor to
idle when over loaded, thus preventing the load from being lifted. Also, the motor turns idly at the lift and
lower limits to prevent overwinding. The mechanism works also when lifting grounded overloads. It is not
necessary to adjust the friction clutch under normal usage. The friction clutch uses non-asbestos material.
(4) Emergency stop device (option)
This button is used to stop the hoist in an emergency situation. It is a red and mushroom type button. When
pressed, power to the equipment is shut off and the button locks automatically. Turn it to the right to release
the lock and to enable re-start.

— 8 —
5. PREPARATION AND CHEKING BEFORE USE
5.1 Packed contents
Before using, make sure the following contents are packed:
Hoist unit (containing oil)
Chain container (including bolt, nut, and split pin for attaching to hoist unit) available as option.
Push button and cord (the dual speed cylinder type is equipped with a curled cord and fastening belt.)
Load chain
Owner’s (Operator’s) manual and safety instructions.
5.2 Preparation and checking before use
The appearance and profile are as shown in the next;
Hook latch
Top hook
Gear case
Controller cover
Power supply cable
Motor
(motor frame)
Drain plug
Push- button cord
Chain container
Load chain
Push-button switch
Cushion rubber
Hook latch
Bottom hook

— 9 —
5.3 Before using, prepare and check the following five items.
(1) Gear oil supply
Gear oil is pre-supplied in the gear box.
To change gear oil: Remove oil plug and drain from gear box. Drain contaminated oil completely, fasten
drain plug, supply the specified gear oil sufficiently from the oil plug hole, then firmly fasten the oil plug.
Use of the hoist without sufficient oil can cause immediate and severe damage to the hoist’s gear and clutch
mechanisms, which can result in hoist malfunctioning. To avoid these hazards, NEVER use the chain hoist
without sufficient oil. Refer to the following table.
Use of oils other than the specified Kito’s gear oil might not allow full exertion of the built-in
friction clutch, which can cause load to drop. To avoid these hazards:
ALWAYS use the specified Kito’s oil
To avoid oil leak, make sure to firmly fasten drain plug.
(2) Chain container assembly
The chain container stores the load chain on the no-load side. In connecting it to the hoist body, fasten it
completely and pay attention to the following points:
Firmly fasten bolt and nut as shown in the following figure appearing on the next page.
ALWAYS be sure that the load chain on the no-load side is properly stored in the chain container and stored
correctly from the end.
NEVER store chain in the chain container which exceed the specified length of the chain container.
WARNING
Oil plug
Gear oil quantity
W.L.L.
(kg)
Oil quantity
(
ℓ
)
60
100 0.27
180
160
240 0.35
480
CAUTION
Drain plug

— 10 —
Assembly procedure:
Attach the chain container to the chain guide ① with socket bolt ② and U-nut ③．
Attach the split pin ④ to prevent the U-nut ③ from dropping. Bend pin ends 90° or more.
(3) Assembling push button cord and curled cord
a. Single and dual speed types
While the push button cord is being connected to the hoist body, the strain relief wire may not be
connected yet. After the push button cord connecting, be sure to assemble the end of the strain relief wire
to the hoist body.
Short circuit and electric shock may result if the push button cord is pulled when the strain relief wire is not
connected to the hoist body.
ALWAYS make sure that the strain relief wire is properly attached to the hoist body as described in the next.
Assembly procedure:
As illustrated, hook the strain relief wire ② to the cable support L ① of the hoist body.
b. Dual speed cylinder type
While the curled cord is being connected to the hoist body, it may not be fixed to the chain
container yet. As illustrated, attach it to the chain container so that the clamp of the fastening
belt faces the way it does in the figure and so that the load chain comes to the center of the
curled cord at that time.
CAUTION
Fastening belt clamp
Load chain
Curled cord
Chain container

— 11 —
To avoid damage on the curled cord, fix the curled cord to the chain container with the fixing band.
To avoid wear between load chain and chain guide straighten up load chain before fitting the curled cord to
the chain container.
To avoid damaging the curled cord, attach the chain container so that the fastening belt clamp faces up.
(4) Lubricating the load chain
Chain lubrication is a critical factor in the service life of a load chain. Apply enough machine or gear oil
regularly.
Lubrication Procedures
･ Vertically suspend the chain under no load conditions.
･ Remove dust or water drops from the chain
･ Apply lubricant around the sections where the chain links come into contact with each other and the
load sheave or idle sheave as shown in the following figures.
(5) Power supply cable specifications
Use a power supply cable of an outer diameter specified in the below table in relation with a distance to
power source.
Use a three conductors cable including Ground wire as for power supply cable.
Power supply cable diameter
(normal cross-section area of
conductor)
Max. length of power
supply cable
(m)
2.0mm2 30
1.25mm2 15
[Connection to power supply source]
ALWAYS ground the electric chain hoist before using.
NEVER ground the electric chain hoist to a gas pipe as this can create the possibility of explosion.
In addition to grounding, ALWAYS connect to a power supply source equipped with an earth leakage breaker.
Actual power source voltage should not exceed max. allowable voltage: 264V
WARNING
WARNING
Load-applying
direction
・
After the chain lubrication is done, lift and lower without
any load to spread the lubricant thoroughly.
Please consult with KITO Corporation if any of
lubricants are not allowed at your site.
CAUTION

— 12 —
5.4 Installing trolley
(1) MINI trolley
Attachment of adjusting spacers
Remove the top hook of the electric chain hoist and fit together adjusting spacers to the trolley with the
top yoke. 34 adjusting spacers (3.2mm thickness) and 2 Adjusting Spacer-Bs (1mm) are accompanied.
With 32 of Adjusting Spacer as shown in the following table, fix the trolley frames’ distance so that
Dimension A approximately equals Dimension B ( beam width) plus 3mm as illustrated.
(Reference)
Beam width (mm) Inside trolley frame Outside trolley frame
50 H-beam Right/left, 8 pcs. each Right/left, 8 pcs. each
68 H-beam Right/left, 11 pcs. each Right/left, 5 pcs. each
I-beam
98 H-beam Right/left, 16 pcs. each Right/left, 0 pcs. each
100 I-beam
Incorrect number of adjusting spacers may cause the trolley not to move or to drop. To avoid these hazards:
ALWAYS make sure to use all 32 pieces and confirm that A-B ≈ 3 mm.
Fitting of socket bolt
Set the trolley so that the wheel axis is right angle to the load line. Attach the socket bolt, nut and U
nut (double nut system), adjusting the clearance of 2mm or less between the split pin hole and U nut
with 2 Adjusting Spacers and 2 Adjusting Spacer-Bs, and then tighten them and secure the split pin
to the bolt.
To avoid the trolley from dropping, firmly fasten the socket bolt, nut and U nut. Insert split pin and bend its ends
90 or more.
WARNING
WARNING
Load line
Split pin
U nut
Nut
Wheel axis Trolley
frame
Rail
Adj
usting
spacers
Socket bolt
Nut
U-nut
Split pin
Insert 4 adjusting spacers
inside the top yoke.
Top yoke
(of electric hoist)
Split pin

— 13 —
(2) Installing trolley to rail
For all trolley suspended electric chain hoists, rail stops must be installed at each end of the rail. Failure to install
rail stops will allow the hoist and trolley to fall off the end of the rail and thus cause an accident that could result
in injury and/or property damage. The stops must be positioned so as to not exert impact force on the electric
chain hoist frame or trolley wheels. They must contact the ends of the trolley side frame.
Rail stops should be attached with buffers to alleviate trolley impact force.
(3) TS series trolley (480kg only)
* For more details of connection with TS series trolley, refer to the manual of TS series
trolley
WARNING
ED 480kg ED 480kg
Top hook Suspender
Slotted nut
Split pin
Yoke bolt

— 14 —
6. OPERATION
As soon as pre-usage preparation and checks have been completed, the hoist will be ready for operation.
In shifting operation between lifting up and lowering down under the loaded condition, ensure to avoid the
immediate reverse operation before the hoist motor completely stops. If not avoided, it could result in the
hoist’s damage.
Ensure to avoid the excessive inching operation. (Inching operation: very frequent lifting or lowering
operations in a very short time for positioning the hook with very small repeated hook movements.) If not
avoided, it could result in the hoist’s damage.
6.1 Single speed type
The push button switch is single step push in type. Push to lift and to lower.
Emergency stop device (option)
This button is used to stop lifting or lowering in an
emergency situation. It is a red, mushroom type button,
located in the upper most position on the push button
switch box. When pushed, power to the equipment is shut
off and the button locks automatically. Turn it to the right
to release the lock.
6.2 Dual speed type
The push button switch is dual step push in type. The first step is for low speed operation and the second step
for high speed. Push to lift and to lower.
[Low speed adjustment procedure]
The push button can be adjusted by setting the low speed side
for the actual power source voltage in each country. However, if
the low speed does not work or is too fast or slow (owing to
voltage and frequency fluctuation), adjust the switch in the
following way:
WARNING
Emergency stop
button (option)
Single speed type
Emergency stop
button (option)
Dual speed type

— 15 —
NEVER touch live portions of cables, terminals, and terminal screws during adjustment so as not to incur
electric shock.
ALWAYS make sure to turn power off before servicing.
Open the back lid of the push button switch (as depicted in the next illustration).
Turn the volume clockwise to increase speed or counterclockwise to lower it.
Close the back lid of the push button switch.
6.3 Dual speed cylinder type
(1) This is a handling switch type hoist. The switch is directly attached to the bottom hook.
As illustrated, the switch is cylinder shaped. Load is lifted when the switch is flipped up and lowered
when flipped down.
* The operation box has an alternate lightning switch.
* High or low lifting speed is selected by the alternate switch.
* “H” on the left side for high speed, “L” on the right side for low speed.
[Speed adjustment procedure]
If the hoist does not operate or have the proper speed, adjust the speed volume as follows:
* For increasing the lifting speed, turn the volume clockwise.
* For decreasing the lifting speed, turn the volume counterclockwise.
(2) The bottom hook is detachable. Detachment and setting are described next.
To detach bottom hook:
Holding the body nut, turn the hook cam to be the left (counterclockwise).
To set the bottom hook:
The bottom hook can be set by simply pushing it in from underneath.
DANGER
Volume
Hi
gh
-
speed
adjustment volume
Speed selector
Emergency stop type
Speed select
o
r
Cylinder
grip
Low speed
adjustment volume
Cylinder control
Cylinder grip
Body nut
Hook cam
Detachable hook
Low speed
adjustment volume
Emer
gency
stop button
Cylinder control
Cylin
der grip
Body nut
Hook cam
Detachable hook
Cylinder control
Opera
tion ( example)
Hold the cylinder grip and operate the cylinder control with
either the thumb or thumb and index finger.

— 16 —
ALWAYS make sure the hook cam is completely locked.
NEVER dropping or releasing a load could result in death or serious injury.
To avoid this hazard, do not operate the bottom hook release mechanism (hook cam) when
the hoist with cylinder-controlled or optional detachable hook is under load.
6.4 Electric chain hoist with trolley
To operate the electric chain hoist with trolley, move it horizontally by either pushing the lifted load or the
load chain.
NEVER pull the curled cord, push switch or push button cord. Pulling the curled cord, push button switch or
push button cord may disconnect cord wires. Disconnected wire (s) may cause a short circuit in the
hoist body or any surrounding conductor, giving the operator electric shock.
ALWAYS move the horizontally by grasping the cylinder grip or pushing the load.
ALWAYS pay your attention on your back when you attempt to push a lifted load or the load chain.
7. INSPECTION
7.1 Inspection classification
(1) Initial inspection: Prior to initial use, all new, altered, or modified hoists shall be inspected by a
designated personnel to ensure compliance with the applicable provisions of this Manual.
(2) Inspection procedure for hoists in regular service is divided into two general classifications based upon
the intervals at which inspection should be performed. The intervals in turn are dependent upon the nature
of the critical components of the hoist and the degree of their exposure to wear, deterioration, or
malfunction. The two general classifications are herein designated as daily and periodic with respective
intervals between inspections as defined below.
(a) Daily inspection: visual examinations by the operator or other designated personnel.
(b) Periodic inspection: visual inspection by a designated personnel.
1) normal service; yearly
2) heavy service; semiannually
3) severe service; quarterly
4) special or infrequent service; as recommended by a qualified person before the first such
occurrence and as directed by the qualified service personnel for any subsequent occurrences.
WARNING
WARNING

— 17 —
7.2 Occasionally used hoist
(1) A hoist which has been idle for a period one month or more but less than one year shall be given an
inspection conforming to the requirements of section 7.4 before it is placed in service.
(2) A hoist which has been idle for a period of one year shall be given an inspection conforming to the
requirements of section 7.4 before it is placed in service.
7.3 Inspection record
Dated inspection reports and records should be maintained at time intervals and such records are stored
where they are available to authorized personnels.
7.4 Inspection methods and judgement criteria
Item
Inspection methods
Discard limit/criteria
Remedy
1. Hoist body
(1) Casting damage
Check visually.
･
No cracks on hoist body.
Replace
.
(2) Abnormal sounds
during operation
Lift and lower a light
load.
･ No vibration or irregular noise
from the motor or from inside the
hoist body
.
Overhaul.
(3) gear oil quantity;
contamination
Check visually. ･ Change gear oil regularly,
matching usage frequency.
Replace.
(4) Controller cover and
case dam
a
ge
Check visually. ･ No deformation or cracks. Replace.
(5) Name plate damage
C
heck visually.
･
Capacity
should be legible
R
eplace.
(6) Cable and cord joint
damage
Check visually. ･ No damage or loose screws. Replace/repair.
(7) Brake function Check brake slipping
on lifting or lowering
with no load.
･ Braking distance: approx. 5 chain
links.
Ask service shop to
inspect and repair.
Check brake slipping
on lifting or lowering
with rated load at
high speed.
･ Braking distance: approx. 5 chain
links.
Ask service shop to
inspect and repair.
(8) Brush Check visually. ･ The discard limit of this brush is 8
mm (brush should not be worn past
this limit).
Replace.

— 18 —
Item
Inspection methods
Discard limit/criteria
Remedy
2. Operation switch
(1) Function Operate switch with
no load.
･ The bottom hook shall lift and
lower based on push button switch
and cylinder switch indications.
Check power source
and make sure cord
is connected.
Replace if defective
(electrical
equipment
included).
･ To change from the low to high
speed. (Dual speed and dual speed
cylinder types)
Replace.
(2) Emergency stop
function
Operate switch with
no load.
･ Make sure the hoist stops
instantaneously when the
emergency stop button is operated
while lifting or lowering.
Check power source
and make sure cord
is connected.
Replace if defective
(electrical
equipment
included).
(3) Case cracking
Check visually.
･
No cracks.
Replace
.
(4)Loose wiring joints
Check visually.
･ No loosening or missing of screws.
R
epair.
3. Load chai
n
(1) Appearance
Check visually.
･ Load chain shall be oiled.
S
upply oil
.
(2) Load chain
Appearance
Check visually for
greasing and twisting.
Load chain is well lubricated.
If chain is dry, apply
the specified
lubricant in the
section
‘
5.2(4)
’
.
Load chain is not
twisted or capsized.
If chain is twisted,
untwist it and restore
it to normal chain
condition.
(3) Wear Measure with
calipers.
･ Dimension “P” or “d” shall be
within the following values:
Replace.
Unit (mm)
Chain
diameter
(d)
Number of measured
chain links
Sum of pitches (P) of
measured chain links Wear limit
of d
Normal Discard
4 5 60.5 62.3 3.3