Unior 266 Series User manual

OWNER’S MANUAL
Electronic Torque Wrench
266 Series

1
Dear Users,
Thank you for purchasing our electronic torque
wrench. This manual will help you to use the many
features of your new electronic torque wrench.
Before operating the torque wrench, please read
this manual completely, and keep it nearby for
future reference.
MAIN FEATURES
Head Interchangeable
Electronic torque value readout
+/- 1% or +/-2% accuracy
CW and CCW operation
Peak hold and track mode selectable
Buzzer and LED indicator for the 9 pre-settable
target torques
Engineering units(N-m, ft-lb, in-lb, kg-cm)
selectable
50 or 250 data memory for recall and joint
torque auditing
Auto Sleep after about 5 minutes idle
BothAAand rechargeable batteries are compatible
(batteries not included).
NAMES AND FUNCTIONS OF PARTS
1. Round Head Ratchet
Insert
2. Sensor Yoke
3. LCD Display
4. Buzzer
5. Communication Port
6. Buttons
7. Battery Compartment
8. Battery Cover
9. Ratchet Drive
10. Handle
11. LED Indicator
12. Torque Value
13. Pre-setting number
14. Units(N-m, ft-lb, in-
lb, kg-cm)
15. P(Peak hold mode)
/T(Track mode)
16. Power on/Clear
button
17. Pre-setting number
selection button
18. Unit/Setting button
19. Up/Down button

2
SELECTION GUIDE
○,1 ○,2 ○,3
MODEL NO:
○,1：
○,2：
○,3：
Model Square
drive
(inches) Max. Torque
266 1.5~30 1/4
30 N-m / 22.12 ft-lb /
265.5 in-lb / 306.1 kg-cm
266 6.8~135 1/2
135 N-m / 99.5 ft-lb /
1195 in-lb / 1378 kg-cm
266 10~200 1/2
200 N-m / 147.5 ft-lb /
1770 in-lb / 2041 kg-cm
Torque Accuracy
A +/-1%-CW / +/-2%-CCW
B +/-2%-CW / +/-3%-CCW
Communication
N No
U Yes
266 1.5~30
266 6.8~135
266 10~200
A
B
N
U

3
SPECIFICATIONS
Model
No.
Max.
Torque
(N-m)
Square
Drive
(inches)
Torque
Measuring
Range
(N-m)
Length
(mm)
266 1.5~30
30
1/4
1.5~30
390
266 6.8~135
135
1/2
6.8~135
410
All Models
Torque Accuracy *1
BU
CW
：
±2%
CCW：±3%
Data memory size 250
PC Connectivity *2 Yes
Pre-setting No. 9 sets
Bright LED
12LEDs
(2 Red+10 Green)
Operation Mode Peak Hold / Track
Unit Selection N-m, ft-lb, in-lb, kg-cm
Head Type Round Head Ratchet Insert
Size of Head of End
Fitting (WxH)
9 ×12 mm
Axial Distance 17.5 mm
Gear Teeth 52
Button 5
Battery *3 (not
included)
AA x 2
Operating Temperature -10℃~60℃
Storage Temperature -20℃~70℃
Humidity Up to 90% non-condensing
Drop Test 1 m
Vibration Test *4 10G
Environmental test *5 Pass
Electromagnetic
compatibility test *6
Pass
NOTE: Accuracy is guaranteed from 20% to 100% full
scale.
* :See note on page 5

4
SPECIFICATIONS
Model
No.
Max.
Torque
(N-m)
Square
Drive
(inches)
Torque
Measuring
Range
(N-m)
Length
(mm)
266 10~200
200
1/2
10~200
520
All Models
Torque Accuracy *1
BU
CW
：
±2%
CCW：±3%
Data memory size 250
PC Connectivity *2 Yes
Pre-setting No. 9 sets
Bright LED
12LEDs
(2 Red+10 Green)
Operation Mode Peak Hold / Track
Unit Selection N-m, ft-lb, in-lb, kg-cm
Head Type Round Head Ratchet Insert
Size of Head of End
Fitting (WxH)
14 ×18 mm
Axial Distance 25 mm
Gear Teeth 52
Button 5
Battery *3 (not
included)
AA x 2
Operating Temperature -10℃~60℃
Storage Temperature -20℃~70℃
Humidity Up to 90% non-condensing
Drop Test 1 m
Vibration Test *4 10G
Environmental test *5 Pass
Electromagnetic
compatibility test *6
Pass
NOTE: Accuracy is guaranteed from 20% to 100% full
scale.
* :See note on page 5

5
Note:
*1: The accuracy of the readout is guaranteed from
20% to 100% of maximum range + /- 1 increment.
The torque accuracy is a typical value. Calibration
line is at the middle line of the dark spot on the
rubber handle. For keeping the accuracy, calibrate
the wrench for a constant period time (1 year).
And the accuracy is based on the zero degree of
offset from perpendicular drive.
*2: Use a special designed cable (accessory) to
upload record data to PC.
*3: Two AA batteries (Toshiba carbon-zinc battery)
*4: Horizontal and vertical test
*5: Environmental test:
a. Dry heat
b. Cold
c. Damp heat
d. Change of temperature
e. Impact (shock)
f. Vibration
g. Drop
*6: Electromagnetic compatibility test:
a. Electrostatic discharge immunity (ESD)
b. Radiated susceptibility
c. Radiated emission

6
BEFORE USING THE WRENCH
BATTERY INSTALLATION
Remove the battery cap.
Insert two AA batteries matching the -/+
polarities of the battery to the battery
compartment.
Put on the battery cap and rotate it tightly
according to the following figures.
POWER ON AND RESETTING THE WRENCH
Press to power on the electronic torque
wrench.
Usually press to reset the electronic torque
wrench before using it.
ATTENTION:
If an external force is applied to the torque
wrench during power-on/reset or wake up period,
an initial torque offset will exist in the memory.
Direction of Battery and Cap Installation

7
ACTIVATION DURING SLEEP MODE
The wrench will auto sleep after about 5 minutes
idle for power saving. Press to wake up the
wrench during the sleep mode.
CAUTIONS:
During communication period (Send appears),
the sleep function is disabled.
RESETTING THE WRENCH
Press together will reset the wrench.
If the wrench does not function normally,
Press together to reset the wrench.
LOW BATTERY VOLTAGE PROTECTION
If the battery serial voltage is in low voltage
status, the wrench will display a battery symbol
and then turn off after a while.
WHEN CHANGING THE TYPE OF HEAD
If you use the different head of the wrench, the
reading on the display will be different for the
different length of the head. Please refer to the
following explanation.
Reference dimension for each model：
Model
L2(mm)
L3(mm)
266 1.5~30 29 272.7
266 6.8~135
29 287.7
266 10~200 40 381.2
D : The set torque
D1: The actual torque applied to the nut.
L1: The extended length
L2: The normal length
L3: The length from the fitting pin to the
calibration point.
D = D1 * (L3+L1) / (L3+L2)
Calibration Point

8
SETUP
STEP 1: PRE-SETTING NO.
STEP 1: PRE-SETTING NO.
Note:
1. If is appeared, that means this wrench has ever been
applied more than 110% of torque of the spec.
2. The maximum capacity for “Pre-setting No.” is 9 sets.
3. The “Pre-setting No.” is cyclic.
*Note1, 2, 3
Pre-setting: M9
Pre-setting: M1
Press
Press
Pre-setting: M3
‧
‧
‧
Pre-setting: M2
1
4
3
Unit Selection/Setting
3
Up/Down Button
2
1
Power On/Clear
4
Pre-Setting No.
2

9
STEP 2: UNIT SELECTION
STEP 3: SET TORQUE VALUE
Note:
1. The “Unit Selection” is cyclic.
Pre-setting Torque Value
Decrease Target Torque Value
Press
Increase Target Torque Value
Pre-setting Unit: N-m
Press
Unit Selection: kg-cm
Unit Selection: ft-lb
Unit Selection: in-lb
Press
Press
Press

10
STEP 4: PEAK HOLD /TRACK MODE
SELECTION
Note:
1.
Please skip this procedure and continue to the next
step.
Set Peak/Track mode
Press
Set Peak/Track mode
Record No.
*Note 1
Track Mode
Long Press
Peak Hold Mode
Clear Record
Press
*Note 1
Press
Press for Selection

11
TRACK MODE OPERATION
Buzzer
(((((((( )))))))) ((((((( )))))))
Apply Torque
Current Torque Value
Current Torque Value
*Note 1
START
(System initial)
((…((……))…)) ((…((… …)) …))
Buzzer
Red LED
Approached Target Torque
Setting Target Torque
Green LED
Reach 80% of Target Torque
Reach Target Torque
Reach 80% of Target Torque
*Note 3
Note:
1. If is appeared, that means this wrench has ever
been applied more than 110% of torque of the spec.
2. When 80% of the target torque is reached, the green LED will
begin to flash and the alarm tone will beep intermittently.
3. When the target torque is approached, the alarm will change to
a steady tone and the green LED will stop flashing and stay on.
The red LED will also illuminate.
*Note 2

12
PEAK HOLD MODE OPERATION
Red LED
Approached Target Torque
Buzzer
(((((((( )))))))) ((((((( )))))))
Reach Target Torque
Current Torque Value
(Peak Hold)
START
(System initial)
Apply Torque
*Note 1
((…((……))…)) ((…((… …)) …))
Buzzer
Green LED
Reach 80% of Target Torque
Flashing
Apply Torque
Released
Setting Target Torque
*Note 4
Reach 80% of Target Torque
Recording
*Note 2
Note:
1. If is appeared, that means this wrench has ever been
applied more than 110% of torque of the spec.
2. If is appeared, that means the wrench’s memory is full
and the next value record can not be written in. Please refer the
“Peak Hold Mode Recorded Value Review” section to clear the
momory records.
3. When 80% of the target torque is reached, the green LED will
begin to flash and the alarm tone will beep intermittently.
4. When the target torque is approached, the alarm will change to a
steady tone and the green LED will stop flashing and stay on. The
red LED will also illuminate.
*Note 3

13
Peak Hold Mode Recorded Value Review
Note:
1. The “Peak Hold” mode recorded value review also can be
operated from “Track” mode operation.
2. If you operate in the “Peak Hold” mode, the display will
show and please go to next step.
3. If the record is empty, it will show .
4. This function is not supported on all type of models.
5. Communication mode is for uploading record data to PC.
6. Communication mode is also for calibration of torque wrench.
Please contact your local dealer for more information.
Press
Peak Hold/Track Mode
Set Peak/Track Mode
Auto Change
Record No.
*Note 2
Record Value
Long Press
Press
Communication
*Note 3
*Note 1
Clear Record
Press
Peak Hold /Track Mode
No
(Give up)
*Note4, 5, 6
(Exit)
Communication
Deleted
(Clear)
Yes
Press

14
COMMUNICATION
CONNECTING COMMUNICATION CABLE
Turn off power and then connect the accessory
cable between the COM port of PC and torque
wrench.
UPLOADING RECORD DATA
Make sure the connection between PC and
wrench is normal.
Press together to reset the wrench.
Change the wrench operation mode to “Send”.
(Refer to “Peak Hold Mode Recorded Value
Review ” section)
Use PC to start the uploader program.
In uploader program, first select the correct
COM port No.
Next, select the file path to save the uploaded
data.
Finally, press “upload” button to transmit the
torque records to PC.
The uploaded data is then shown on the column
and saved in the *.csv file. Use Microsoft Excel
to view *.csv file.
Precaution:
1. Communication function is only supported
on some models. Check the model no. and
its specification before using
communication function.
2. Do not insert the plug of communication
cable into torque wrench that does not
support communication function.
CAUTIONS:
Refer to the uploader program user
guide for the detail operations.

15
MAINTENANCE AND STORAGE
CAUTION: 1. Over-torque (110% of
Max. torque range)
could cause breakage
or lose accuracy.
2. Do not shake violently
or drop wrench.
3. Do not use this wrench
as a hammer.
4. Do not leave this wrench in any place exposed to
excessive heat, humidity, or direct sunlight.
5. Do not use this apparatus in water.(not
waterproof)
6. If the wrench gets wet, wipe it with a dry towel
as soon as possible. The salt in seawater can be
especially damaging.
7. Do not use organic solvents, such as alcohol or
paint thinner when cleaning the wrench.
8. Keep this wrench away from magnets.
9. Do not expose this wrench to dust or sand as this
could cause serious damage.
10. Do not apply excessive force to the LCD panel.
11. Apply torque slowly and graspe the center of the
handle. Do not apply load to the end of handle
BATTERY MAINTENANCE
1. When the wrench is not used for an extended
period of time, remove the battery.
2. Keep a spare battery on hand when going on a
long trip or to cold areas.
3. Do not mix battery types or combine used
batteries with new ones.
4. Sweat, oil and water can prevent a battery’s
terminal from making electrical contact. To
avoid this, wipe both terminals before loading a
battery.
5. Dispose of batteries in a designated disposal area.
Do not throw batteries into a fire.
ATTENTION:
One-year periodic recalibration is
necessary to maintain accuracy.
Please contact your local dealer for
calibrations.
Rev.：266 1.0
S

16