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