Jet JDTW Series User manual

OWNER’S MANUAL
JET JDTW Series
Digital Torque Wrench
www.jetequipment.com

2
1
Thank you for choosing a JET digital torque wrench.
Before operating the torque wrench, please read
this manual completely, and keep it nearby for
future reference. This is a precision instrument and
must be treated and cared for as such. Rough
handling may affect performance and diminish life.
MAIN FEATURES
Digital torque value readout
12 led side lights and beeper indicate torque
when screen cannot be seen
+/-2 or +/-3% accuracy
CW and CCW operation
Peak hold and track mode
Measures in/lbs, ft/lbs, kg/cm, and nm units
9 presettable target torque values
50 data memory for recall and torque
auditing
Auto sleep after 5 minutes idle time
Compatible with rechargeable batteries
NAMES AND FUNCTIONS OF PARTS
1. Reversible Ratchet
Head
2. Direction Lever
3. LCD Readout
4. Beeper
5. Calibration Port
6. Button
7. Battery Compartment
8. Battery Cover
9. Ratchet Driver
10. Anti-slip Handle
11. LED Indicator
12. Torque Value
13. Memory Number
14. Unit (N-m, ft-lb,
in-lb, kg-cm)
15. Peak/Track Mode
16. Power on/Clear Button
17. Pre-setting Number
Selection
18. Unit Setting/Selection
Button
19. Up/Down Button
12
9
11
34567
8
10
12
1315
14 17
16 18
19

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2
SELECTION GUIDE
Model
Square
Drive
Max. Operation Range
JDTW-
14250
1/4”
30 N-m / 22 .12 ft-lb
265.5 in-lb / 306.1 kg-cm
JDTW-
38100
3/8”
135 N-m / 99 .5 ft-lb
1195 in-lb / 13 7 8 kg-cm
JDTW-
12150
1/2”
200 N-m / 147.5 ft -lb
1770 in-lb / 204 1 kg-cm
JDTW-
12250
1/2”
340 N-m / 250.7 ft -lb
3009 in-lb / 346 9 kg-cm
SPECIFICATIONS
Model
No.
Square
Drive
Max.
Operation
Range
(ft/lbs )
Alarm
Setting
Range
(ft/lbs )
Length
(mm )
JDTW-
14250
1/4”
22.12
1.11~22.12
390
JDTW-
38100
3/8”
99.5
5~99.5
415
JDTW-
12150
1/2”
147.7
7.4~147.7
530
JDTW-
12250
1/2”
250.5
12.5~250.5
650
All Models
Accuracy*1
CW±2%
CCW: ±3%
Mem ory
50 records
Pre-Set values
9
Communication
Models designated “-C” only.
Check model number on
package or case sticker
Operation Mode
Peak Hold/Track
Unit Selection
N-m, in-lb, ft-lb, kg-cm
Hea d Ty pe
Lever Type Ratchet
Gear Teeth
36
Button
5
Battery
AA x 2
Battery Life *2
(Continuous
oper atio n)
110 hrs.
Battery Life *2
(Standby)
12 months

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3
SPECIFICATIONS
Operating
Temperature
-10~ 60
Stora ge
Temperature
-20~ 70
Humidity
Up to 90% non-condensing
Drop Te st
1 m
Vibr ation Test *3
10G
Life time *4
10,000 cycle
Envir onm e ntal
test *5
Pass
Electromagnetic
compatibility test
*6
Pass
Note:
*1. Accuracy of readout is guaranteed from 20% to
100% of maximum range + /-1 increment. The
torque accuracy is a typical value. Calibration
point is at the middle line of black circle area on
the rubber grip. To maintain accuracy, calibrate
the wrench at least once per year
*2. Use two AA batteries (Test condition: Toshiba
carbon-zinc battery)
*3. Horizontal and vertical test
*4. One cycle means swing the torque wrench from 0
ft/lbs to maximum range and back to 0
*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

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BEFORE USING THE WRENCH
BATTERY INSTALLATION
POWER ON AND RESETTING THE WRENCH
Press to power on digital torque wrench.
Press to reset digital 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 be recorded in the memory. Ensure
no load is applied during start up.


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5
ACTIVATION DURING SLEEP MODE
The wrench will auto sleep after about 5
minutes idle t i m e to save power.
Press to activate wrench during sleep
mode.
RESETTING THE WRENCH
If wrench does not function normally,
press together to reset wrench.
LOW BATTERY VOLTAGE PROTECTION
If battery voltage is under 2.3 volts, wrench
will display a battery symbol and then turn
off after a while.
WHEN USING THE WR
h does not function normally,


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SETUP
STEP 1: PRE-SETTING NO.
STEP 1: PRE-SETTING NO.
STEP 1: PRE-SETTING NO.
2
1
3
Unit Selection/Setting
3
Adjust Torque Value
2
1
Power On/Clear
4
Pre-Setting No.
4
Note:
1. If appe ars, torq ue has been ap plied in
exces s of 110% of maximum v alue. R ecalibra tion is
req uir e d .
2. Th e m aximum number of preset v a l ues is 9.
3. Th e Pr eset Memory n umber is seque ntia l . C ontinue
pres s ing
The Preset Mem ory n u mber is seque n t ial. Contin ue
to scroll thr ough all 9 choic es.
4. If a memory v a lue is adj uste d, the new value wi ll be
stor e d a u t o matically .
*Note1, 2, 3
Pre-set ting N o.: M1
Press
Press
Pre-set ting N o.: M3



Pre-set ting N o.: M2
Pre-set ting N o.: M9
STEP 1: PRE-SETTING NO.

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STEP 2: UNIT SELECTION
STEP 3: SET MAXIMUM TORQUE VALUE
Note:
1. Th e “Unit Select ion” is s e qu e nt i al . C o nt i nu e p r es s in g
to scrol l t hrough all 4 choices .
Pre-setting Torque Value
Decrease Max. Torque
Valu e
Press
Press
Increase Max. Torque Value
Pre-s etting Un it: N-m
Press
Unit Selection: kg-cm
Unit Selection: in-lb
Unit Selection: ft-lb
Press
Press

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STEP 4: PEAK HOLD/TRACK MODE
SELECTION
Peak Mode
Set Peak/Track mode
Set Peak/Track mode
Track Mode
Press and hold
Press for Selection
Press
Press for Selection
Press for Selection
Note:
1. The “Peak/Track” mode is sequential. Press
The “Peak/Track” mode is sequential. Press
or
The “Peak/Track” mode is sequential. Press
to scrol l bet ween choices

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TRACK MODE OPERATION
Long Beep
(((((((( )))))))) ((((((( )))))))
Note:
1. If appe ars, torqu e has been ap plied in excess
of 11 0% of maximu m value. R ecalibra t i on is re q u ired.
2. Wh en using Tr ack mode LC D w il l begin to show
chan g es af t er 5 Nm has been a pplied. If applied torq u e
is less than 5 Nm display will show no change.
3. The green LED’s will light at 80%, 85%, 90%, 95%, and
97. 5 % of set tor que valu e to show progres s .
4. The red LED’s will light at 100% of set torque value.
Bee per t one will be steady until han dle is releas ed. T his
is a stop signal.
5. Unit dis plays 0 w hen handle is released .
Apply Torque Over 5 N-m
Current Torque Value
Current Torque Value
*Note 1
START
(System initial)
((…((……))…)) ((…(( ……)) …))
Short
Beeps
Red LED
Max. Set Torque or greater
Max. Target Value
Green LED
Over 80% of Set Torque
Over Max. Target Value
Over 80% of Max. Target Value
*Note 4
*Note 2
*Note 3