Jet JDTW Series User manual

OWNER’S MANUAL

JET JDTW Series

Digital Torque Wrench

www.jetequipment.com

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

34567

1315

14 17

16 18

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

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

Button

Battery

AA x 2

Battery Life *2

(Continuous

oper atio n)

110 hrs.

Battery Life *2

(Standby)

12 months

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

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

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.



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,



SETUP

STEP 1: PRE-SETTING NO.

Unit Selection/Setting

Adjust Torque Value

Power On/Clear

Pre-Setting No.

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

Pre-set ting N o.: M3



Pre-set ting N o.: M2

Pre-set ting N o.: M9

STEP 1: PRE-SETTING NO.

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

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

STEP 4: PEAK HOLD/TRACK MODE

SELECTION

Peak Mode

Set Peak/Track mode

Track Mode

Press and hold

Press for Selection

Press

Press for Selection

Note:

1. The “Peak/Track” mode is sequential. Press

The “Peak/Track” mode is sequential. Press

to scrol l bet ween choices

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

*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

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