KTC GEK Series User manual

Thank you for your purchase of our Digital Ratchet GEK series product.
Read this instruction manual to use the Digital Ratchet GEK series
product safely and properly. Be sure to understand the precautions and
usages described herein and warning labels shown on the product before
using it.
Save this manual for your future reference.
Instruction Manual
GEK Series
No.GEK030-R2
No.GEK030-C3
No.GEK060-R3
No.GEK085-R3
No.GEK085-R4
No.GEK135-R4
No.GEK200-R4
KYOTO TOOL
CO.,LTD.
Digital Ratchet

In this mode, you can preset target torques and use the
instrument accordingly.
You can customize the instrument to accommodate your
working conditions and practices.
Specify how the measured torque value is
displayed.
1
1
2
2
3
4
6
7
11
12
14
15
13
Digital Ratchet
GEK series
0. <<Operations of Digital Ratchet >>
1. <<Operations in the Measurement Mode>>
In this mode, you can control the torque by reading the
display without specifying any target value. It allows
you to tighten an object while checking the torque.
You can convert units for displaying measured values
from N-m to other units. (Reference value)
2. <<Unit Conversion>>
3.
<<Operations in the Preset mode>>
4. <<Custom Settings>>
4-1.
<<Custom Setting: Measurement
Display Mode Setting>>
4-2. <<Custom Setting: Auto Clear
Mode Setting>>
Specify how long the peak torque value is
displayed in the Auto Clear mode.
Precautions
Precautions
Names and Dimensions
Names of indicators
4-3. <<Custom Setting: Buzzer
Sound Setting>>
Specify whether to turn ON/OFF the buzzer.
4-4. <<Custom Setting: Pass/Fail
Mode Setting>>
Specify whether to turn ON/OFF the Pass/Fail
mode, and to use the instrument in the
right-turning or left-turning direction.

List of the error codes displayed on the display and
their remedies.
List of the functions of the buttons in each mode.
Specify acceptance values (upper limit/lower limit) in the
Pass/Fail mode.
Description of the ratchet part used for changing
socket wrenches and so on.
16
20
21
21
22
22
23
23
12. <<Aftersales Services>>
11. <<Maintenance>>
10. <<Troubleshooting>>
9. <<Union Mechanism>>
8. <<Error Messages>>
7. <<Replacement and Disposal of
Lithium Changing Battery>>
6.
<<Functions of Modes and Buttons>>
5. <<Custom Setting: How to Use the
Pass/Fail Mode>>

CAUTION
CAUTION
Precautions
CAUTION
Indicates things you must perform.
Indicates things prohibited to perform.
Indicates failing to observe the precautions herein may result in injuries or
property damages.
Indicates things you need to be careful of.
NOTE
• Be careful not to expose the product to chemicals, seawater, and moisture.
• Make sure that no screws are loose on each of the parts.
• For safety, be sure to wear eye protection when using the product.
• Do not use the product when the product or object to be worked on is defective in any way
such as it has crack or distortion.
• Do not operate the product with excessive torque, which may lead to damaging the product.
Do not use it outside the specified torque range.
• Do not apply pressure or shock to the product. Otherwise, it may cause the product to
malfunction.
• Do not disassemble or remodel the product. The product cannot function fully after it has been
heated or remodeled.
• Do not operate the product when it is not fit to the object such as slantingly or shallowly.
• Do not operate the product on an unstable workpiece.
• Do not operate the product on an object or part which is out of the scope or specification of the
product. Otherwise, it may cause the product to break or malfunction.
Please read before operating the product.
• When disassembling or assembling parts or handling new parts, be sure to follow the
instructions provided by the manufacturers of the parts for doing the task properly.
• When using the product in a place where the temperature changes rapidly, turn the product off
and on frequently.
• Before storing the product, put it in the dedicated blowcase and store it in a place where the
temperature ranges from -20 to 60°C without condensation.
• Be sure to keep the product out of the reach of infants. In case where an infant swallows any
of the battery, battery cover, and screws, seek medical attention immediately.
• Do not apply any force when turning on the product. Otherwise, the product may not measure
torques correctly.
• Do not measure torque using a tool whose effective length is variable like a crow foot wrench
since it leads to incorrect measurements.
• Do no measure torque near noise sources such as mobile phone, cordless phone, and ham
radio.
• Stop using the product immediately if you notice any abnormal noise or any other anomalies.
• Do not apply any force on the display.
• Be careful not to apply excessive torque on the product. Although the product can raise an
alarm when the target torque has been reached and show the maximum torque, it has no
mechanism to protect itself from excessive force.
• When using the product as a ratchet handle, do not extend the grip with a pipe to protect the
inner structure. In addition, do not apply a force higher than 680 N (70 kgf) on the grip.
Precautions for battery CAUTION
• In case where liquid leaking from the battery comes into contact with your eye, immediately
flush it with plenty of clean water and seek medical attention. Otherwise, it may cause loss of
eyesight or similar injury.
• In case where liquid leaking from the battery comes into contact with your skin or clothes,
immediately flush it with plenty of clean water. Otherwise, it may cause injury.
• Be sure to keep the battery out of the reach of infants to prevent them from swallowing it. In
case where an infant swallows it, immediately seek medical attention.
• Load the battery orienting it to the correct direction. When the battery has run out, replace it
with a new one immediately. When the product will not in use for a long period of time (over
three months), take the battery out. Otherwise, the battery may leak, heat, or burst, damaging
the product as a result.
• Do not throw the battery into fire. The battery may explode.
Package Content
Digital Ratchet: 1 Instruction Manual: 1 Registration Card: 1
Inspection Record: 1
Case: 1
Please read before using the product.

-5 to 40°C
Names and Dimensions
Ratchet part
Push button Grip
LED indicator
Display + (Plus)/C (Clear) button
- (Minus) button
M button
P button
Buzzer Center line
Part number/serial number plate
Battery cover Captive screw for battery cover
Part number
sq.: Driving angle
Measurement
accuracy
Right-turning
screw
Left-turning
screw
±3.0% + 1 digit (digit= minimum unit of display)
±3.0% + 1 digit (digit= minimum unit of display)
Accuracy assurance range (N-m)
Minimum unit of display (N-m)
L: Total length (mm)
B: Ratchet width
T1: Ratchet thickness
1/4” sq. 3/8” sq. 1/2” sq.
T2: Display height
Weight
R: Effective length
Operating temperature
Storage temperature
Battery
Battery life
Lithium coin battery CR2354 (1)
Approx. 2 months (100 times of use/day)
* Measured values outside the accuracy assurance range are reference values.
Names of indicators
Memory number/mode indicator Unit indicator
Torque indicator
L
6-30 17-85 17-85 27-135 40-200
-20 to 60°C
12-60

For the details of operations, see the topics for them.
Regular startup
Power ON
Power ON
See (1)
Measurement mode
See (2)
Preset mode setting
See (3)
Custom Setup screen startup
Power ON
Measurement display
mode setting
Auto Clear mode time
setting
Buzzer sound setting
Pass/Fail mode
setting
The settings made in the Custom Setup screen will
take effect after turning OFF the power and turning it
ON again.
Power OFF
<<Operating the Digital Ratchet>>
Power OFF
See 4-1
See 4-2
See 4-3
See 4-4
See 5-(1)
Press and hold
Press
and hold
Press and hold
Press and hold
Press
and hold
Press
and hold
Power ON

<<Operations in the Measurement Mode>>
In this mode, you can control the torque by reading the
display without specifying any target value. It allows you to
tighten an object while checking the torque.
P button
Starting up
With nothing shown
on the display,
press the P button
to turn the power
ON. The display will
display " " and the
LED will light once
with a short buzzer
sound.
Lights once
NOTE
(1)
Power ON:
Turn ON the power for making measurements and settings.
If an error code
appears, troubleshoot it
referring to 8.
After the power is turned ON,
the instrument enters the
Measurement mode.
Measurement mode display
(With no load applied)
NOTE
Be sure to not to apply any force to the instrument after turning
it ON until the display displays "0". If it is turned ON with some
force applied, it may not indicate the torque correctly.When you
use it in a place where it is exposed to sudden changes in
temperature, turn it OFF and ON frequently.
When the Pass/Fail mode
has been set,
see 5-①.
1.
Blip

<<Operations in the Measurement mode>>
1.
To turn OFF the power
To turn OFF the power, press and hold the P button.
(For one second or more)
P button
(2)To measure a torque:
Measure a tightening or loosening torque.
Attach the s
ocket that fits the object to be
measured on the Digital R
atchet.
Set the Digital Ratchet on the object, and
apply force to the grip gradually.
Press the push button on the ratchet part to attach
or detach a socket wrench. See 9
For accurate torque measurement
NOTE
Be sure to observe the following precaution for obtaining
more accurate measurements.
Apply force to the center line of the grip when making
measurements.
Center line

1.
<<Operations in the Measurement Mode>>
(2) (continued)
After a measurement is
made, the torque reading
is shown on the display.
The display shows the
maximum measurement
when the Peak Hold
mode is active.
To disable the Peak Hold
mode, press the + (Plus)/
(Clear) button.
NOTE
The display keeps showing the torque while no operation is made.
If no operation is made for two minutes, however, the power is
automatically turned off and thus the measured torque is lost.
2. <<Unit Conversion >>
NOTE
NOTE
NOTE
The value after conversion is a
reference value. In addition, since
values after conversion have been
rounded according to the
minimum display unit, the values
are a little off the original value.
The unit indicator will light after
the unit conversion is made to
signal that the value is just a
reference value.
Be aware that pressing the P button
for a long time will turn OFF the power.
After a measurement is made in a mode
with the Peak Hold function active or while
a torque is being set in the Preset mode,
you can convert the torque into a value in
another unit by pressing the P button.
P button
The Digital Ratchet has the function to convert units for measurements.
No unit conversion can be made in
the Track mode.

3. <<Operations in the Preset mode>>
The Digital Ratchet allows you to preset target torques and
tighten/loosen in accordance with those torques like a preset-type
torque wrench. (See 3-(4))
The display shows "M" at the upper-left
corner and the registered torque value as
the current setting of the Preset mode.
(For how to make the setting, see 3-(4).)
Turn ON the power, and then press
the M button once after the instrument
enters the Measurement mode.
M button
(2)Select the Preset mode.
(1)Turn ON the power. (See 1 -(1)).
Measurement
Register
Set a target torque. Set a target torque.
Set a target torque as necessary. Preset a target torque.
In addition, it allows you to store (preset) torque values to different
memory numbers, which is useful for frequent or repeated tasks.
(See 3-(4))

<<Operations in the Preset mode>>
3.
Preset mode display
Setting state Measuring state
Stays lit in the setting state
Stays off in the measuring state
After 3 seconds
Memory No. Memory No.
The setting state will turn to the measuring state
with "M" at the upper-left corner of the display
disappearing after three seconds of no operation.
Memory numbers
In the Preset mode, you can preset up to five
torque values storing them into memory numbers 1
through 5.
Every time the M button is
pressed, the next memory
number is called up.
Pressing the M button when the memory No. 5 is
shown returns the display to the Measurement mode.
Memory No. 5
Measurement mode Memory No. 1
Memory No. 2
Memory No. 3
Memory No. 4
A torque value is registered to each of the memory
numbers before shipment. Use the memory
numbers by changing their torque value.

3. <<Operations in the Preset mode>>
(3) Setting a target torque value
Press the + (Plus)/C
(Clear) and - (Minus)
buttons to display the
torque value you wish to
set.You can change the
value faster by pressing
the M button longer.
Lights in the setting state
Preset mode display
(Setting state)
"M" lit at the upper-left corner of the display signals
that the current reading is different from the preset
torque registered in the memory number.
NOTE The preset torque values are all lost when the power is
turned off. When the power is automatically turned off
after two minutes of non-operation, however, the value
registered last is kept in memory, although the other
values are lost.
(4) Registering a target torque value
Call up the memory number to
which you wish to register a
torque value and set your
desired value.
NOTE A newly registered torque value will overwrite the value
previously registered in the memory number.
Blip
(See 3-(3))
After setting your desired
torque, press the M button
longer. The value will be
registered along with a short
sound of buzzer and flashing
of the LED lamp.

pip,pip,pip,
pip,pip...
3. <<Operations in the Preset Mode>>
(5) Measuring a torque (see 1-(2))
In the Preset mode, the
instrument notifies you of
the target torque being
approached with
intermittent sounds of
buzzer and flashing of the
LED lamp. It starts when
the measured torque has
reached 10% short of the
target.
In the Preset mode, the
instrument notifies you
that the measured torque
has exceeded the target
value by emitting a
continuous buzzer sound
and lighting the LED
lamp.
NOTE
The torque value is displayed according to the setting made in 4-1.
Peak Hold mode ⇒The value is maintained until it is canceled.
Auto Clear mode ⇒The value is cleared after the specified
time has elapsed.
Track mode
⇒
The torque value applied is displayed at all times.
Bleep!

4. <<Custom Settings>>
The Custom Setup screen allows you to make various
settings to use the instrument more conveniently.
Setup screen operations
To open the Custom Setup
screen, press the P button
while holding the M button
with the power turned off.
The Custom Setup screen
appear.
After the screen is opened,
every time the M button is
pressed, the setting item
changes.
After the Setup Screen is opened
M button
+ (Plus )/C (Clear) button
- (Minus) button
Selects setup screens
Changes settings
Custom Setup screen startup
Power ON Power ON
Measurement display
mode setting
See 4-1
Press
and hold
Press
and hold
Press
and hold
Press
and hold
Auto Clear mode
time setting
See 4-2
See 4-3
Buzzer Sound Setting
Pass/Fail mode
setting See 4-4
See 5-(1)
FFOrewoP
The settings made in the Custom Setup screen will take
effect after turning OFF the power and turning it ON again.

4-1.
<<Custom Setting: Measurement Display Mode Setting>>
With the power turned off,
press the P button while
holding down the M button.
Now you can set up the
measurement display mode
using the + (Plus)/C (Clear)
and - (Minus) buttons.After the
setting is made, press and
hold the P button to turn the
power off, which completes
the setting.When the power is
turned on next time, the
modified settings are enabled.
a. Peak Hold mode Holds the maximum
measurement value and
display it.
The held value will not be
cleared unless the +
(Plus)/C (Clear) button is
pressed.
Factory setting: P (Peak
Hold)
b. Auto Clear mode
Displays the measured
value for the specified
amount of time and clears
it automatically.
Factory setting: 2 seconds
Settable time : 1 to 10
seconds
(See 4-2 for the setting)
c. Track mode
Holds no maximum
measured value and
displays measured torques
in real time.

Now you can set up the
time using the + (Plus)/C
(Clear) and - (Minus)
buttons. (1 to 10 seconds)
After the setting is made,
press and hold the P button
to turn the power off.
Mode indicator
With the power turned off,
press the P button while
holding down the M
button.
After the power is turned
on, press the M button to
open the setup screen.
Check that the mode
indicator shows "2".
4-2.
<<Custom Setting: Auto Clear Mode Setting>>

Auto Clear time
Pass/Fail mode Buzzer sound
Mode indicator
With the power turned off,
press the P button while
holding down the M button.
After the power is turned
on, press the M button to
open the setup screen.
Check that the mode
indicator shows "3".
Factory setting: On
Now you can turn ON/OFF
the buzzer using the +
(Plus)/C (Clear) and -
(Minus) buttons.
After the setting is made,
press and hold the P button
to turn the power off.
To make the settings consecutively, press the M button
after finishing the setting in each screen, which opens
the next setting screen.
<<Factory default settings>>
Measurement display mode
To make settings consecutively
4-3.
<<Custom Setting: Buzzer Sound Setting>>

(2) Setting the Pass/Fail mode
After the power is turned
on, press the M button to
open the setup screen.
Check that the mode
indicator shows "4".
Factory setting: OFF
Now you can turn ON/OFF
the Pass/Fail mode using
the + (Plus)/C (Clear) and
- (Minus) buttons.
After the setting is made,
press and hold the P button
to turn the power off.
When the mode indicator shows
"4r", pass or fail is determined
in the right-turning direction in
the Pass/Fail mode.
Mode indicator
Mode
indicator
With the power turned off,
press the P button while
holding down the M button.
4-4.
<<Custom Setting: Pass/Fail Mode Setting>>
(1) Opening the Custom Setup screen
The criteria for determining pass or fail are
set for each direction of turning bolts or nuts.
When the mode indicator shows
"4L", pass or fail is determined
in the left-turning direction in the
Pass/Fail mode.

(1) Power ON
If a torque peak does not fall within the preset torque
range, it fails the criteria, and does not increase the
pass count.
Acceptance
range
Torque value
If a torque peak falls within the preset torque range, it
passes the criteria, increasing the pass count.
Torque value
Peak torque
Peak torque
Preset
upper limit
Preset
upper limit
Preset
lower limit
Preset
lower limit
Time
Time
Acceptance
range
5.
<<Custom Setting: How to Use the Pass/Fail Mode>>
What is the Pass/Fail mode?
This is the function to check if the instrument has been
used within the preset torque range.
It records how many bolts and nuts have been
processed correctly in the history (count).
Pass
Failure
Lights once Mode indicator
The instrument enters the
Pass/Fail mode when the
power is turned off and on
after it is set to the
Pass/Fail mode as
described in 4-4. The
mode indicator shows "C".
The number shown in the
"C" display is the pass
count.
Bleep

Setting the lower limit for acceptance
After turning on the
power, press the M button
once to set the target
torque range.
Pass/Fail mode display
(With no load applied)
Be sure to not to apply any force to the instrument after turning
it on until the display displays "0". If it is turned ON with some
force applied, it may not indicate the torque correctly.
When you use it in a place where it is exposed to sudden
changes in temperature, turn it OFF and ON frequently.
Check that the mode
indicator is in the state as
shown left. "L" denotes that
the lower limit is being set.
Now you can set a torque
value using the + (Plus)/C
(Clear) and - (Minus) buttons.
After the setting is made,
press and hold the M button
to register the value.
Mode indicator
Mode indicator
If an error code appears,
troubleshoot it referring
to 8.
5.
<<Custom Setting: How to Use the Pass/Fail Mode>>
NOTE
Press the M button to set
the upper limit. Check that
the mode indicator is in
the state as shown left.
"H" denotes that the upper
limit is being set.
Setting the upper limit for acceptance
(2) Setting a target torque