Snap-On Torque Wrench User Manual

Instructions

Torque & Angle Electronic

Torque Wrench

USE OF ADAPTORS, EXTENSIONS AND UNIVERSALS

Anytime an adaptor, extension or universal is used with a torque wrench in
such a way that the fastener distance is different than the torque wrench
square drive distance, an adjustment to the set torque is required to get proper
fastener torque.

Fastener torque equals
torque wr ench square drive
torqu e. Wrench set t ing is
equal to desir ed fastener
torque.

Fastener torque equals
torque wr ench square drive
torqu e. Wrench set t ing is
equal to desir ed fastener
torque.

Fastener torque is greater
than torque wrench square
drive torque. Calculated set­ting wi ll be lower t han desired
fastener torque.

Fastener torque is less than
torque wr ench square drive
torque. C alculated setting will
be highe r than desired fas­tener torque.

When usi ng w obble ext ens io n
or a unive rsal, do not exceed
more than 15 degrees of off­set from perpendicular drive.
Do not use a long ext ension
with the flex-drive at full flex

.

5

SPECIFICATIONS

For additional product information see:

www.snapon.com/torque/techangle

Ratchet Head: square drive, 36 t eeth, sea led flex
Display 4-digit LCD, torque units, CCW and battery condition flags
Seal ed Ke y Pad

POWER - ON/OFF - auto self check - torque zero - angle reset
UP - increments torque and angle setting
DOWN - decrements torque and angle setting

UNITS mode select ( Nm, ft-lb, in-lb,

Functions Set torque and angle - adjustable - audible and tactile Alert

Track - accumulated angular rotation with real time update
Peak Hold - 10 sec. flashing at torque release

Accuracy (72°F)

ANGLE: +/-1% of reading +/-1º @ angular velocity > 10º/sec < 180º/sec
TORQUE: CW CCW

(non-flexed +/-2% +/-3% of reading, 20% to 100% of full scale
ratchet head) +/-4% +/-6% of reading, 10% to 19% of full scale
+/-8% +/-10% of reading, 5% to 9% of F.S.

Preset Range

ANGLE: 5 to 36 0º CW or CCW (Display Resolution 1º)
TORQUE: (Display Resolution as shown below)

Model Square Drive ft-lb Nm in-lb overload (ft-lb)

ATECH2FR100 3/8 in 5.0-100.0 13.5-135.0 60-1200 125
ATECH3FR250 1/2 in 12.5-250.0 17.5-340.0 150-3000 345

º )

Oper ati ng Te mp erat ur e 5 to 42°C (40 to 110°F)
Stor age Tem p erat u re -20 to 50°C (-1 to 122°F)
Measurement Drif t

TORQUE: +0.01% of reading per Degree C

Humidity - up to 90% non-condensing
Dimensions - length weight

ATECH2 FR100 17 in. 2.2 lbs.
ATECH3 FR250 26 in. 3.7 lbs.

Battery - three "AA" Alkaline cells, up to 40 hours continuous operation.
Auto Shut-off - after 2 minutes idle

ANGLE: -0. 12 Angul ar Degrees per Degree C

2

OPERATOR INS TRUCTION

BATTERY TORQUE AND/OR ON/RESET INCREMENT
CONDITION ANGLE DISPLAY KEY SET KEY

AUDIBLE TORQUE UNITS DECREMENT
ALERT UNITS KEY SET KEY

Install three fresh “AA” alkaline cells into the handle of the wrench.

1 Turn the wrench on by momentarily pushing the
ON/RESET key. The display will return to the mode of
operation and preset values previously set up.

2 To change the mode of operation, TORQUE ONLY or
TORQUE-ANGLE, scroll the selections by momentarily
pushing the UNITS key. The preset values for each
mode will be displayed.

3 Use the UP and DOWN keys to change the preset val­ ues. (Note: Torque is also measured in ANGLE mode
and must be preset prior to adjusting the angle pre­ set). Preset the wrench to full scale if no torque speci­ fication is giv en.

4 Grasp the center of the handle, (do not pull on the end­ cap) and slowly apply torque to the fastener until the
audible sounder and handle vibration alerts you to
stop.

5 Release torque. Note the peak readings flashing on
the display for 1 0 seconds or until the ON/RESET key
is pushed to clear the display.

3

INTRODUCTION

The Snap-on TECHANGLETM wrenches digi tally displ ay an d m onitor fastener torque
and angular rotation (tu rn).

Display Mode s:
Torque only—wrench functions as an adjustable torque wrench.
Torque-angle—wrench functions as an adjustable angle wrench and

simultaneously monitors torque to prevent fastener or wrench overload.
Settings – Adjustable torque and angle settings for fastener installation specifications.

The pr eset values a re programma ble from 5% to 100% of fu l l-sca l e tor que and 5 to 3 60
degrees of rotation. The scrolling display rolls-over at both ends for convenient and
quick setting.

Overload - If the wrench is used beyond 100% torque capacity, the audible tone will
pulse rapi dl y to warn th e user to st op.

Zero/Reset - Automatic self-check, torque zero and angle reset at power-on and any
time the ON/RESET key is pushed. (This is not a calibration check).

FUNCTION DETAILS

To PRESET the wrench, select the UNIT of measu re “Nm, ft- lb, i n-lb or de-
grees (º )” desired. Use the UP and DOWN keys to set the torque or angle required. A

torque value must be set prior to setting the angle mode. This provides a “maximum
torque limit” given in some fastener specifications. If no fastener limit is specified then
set the torque to the full scale of the wrench.

value un til 5% or more of full scale torque i s ap plied. The display then swit ches t o
TRACK mode showing the applied tor que in real time. When applied torque is within
2% o f t he pr eset value, the buzz er will sou nd for 1/2 seco nd and the h andle will vi brate
continuously until torque is released. At torque release the display shows the PEAK
value applied fl ash ing for 10 secon ds. If torque is re-applie d during the 10 -seconds the
display will immediately switch to TRACK mode. If any key is pushed during the 10­seconds the PEAK value will be cleared. If wrench full scale torque is exceeded the
buzzer w ill pu lse and the h andl e will vi brate until t orque is released. Exc eeding 125%
of full scale th e display wil l lock up showin g “- - - - ” and th e wrench must be reset by
pushing the ON button.

one seco nd and then the angle PRESET value. Angle m easu rem ent is held in reset
until 5% of F.S. torque is applied. Rotation (turn) is accumulated in angular degrees.
When torque is released, the accumulated torque and angle values will flash alternately
for 10 seconds. The display w i ll continue to accumulate if torque is reapplied within the
10 seconds. This allows time for reverse (ratchet) motion. When the accumulated an­gle equals the an gle preset value, the bu zzer will sound for one second and the h an dle
will vibrate until torque is released. If torque preset (within 2%) is reached first, the
buz zer will pulse and the handle w i ll vibrat e unti l torque is relea sed. A s above, a ft er
angle preset or torque preset is reached, and torque is relea sed, the total angle accu­mulation and th e PEAK torque will be displayed alternating for 10 seconds or until any
key is pushed. If angle preset is r eached and torque is rel e ase d, angle accumulati on is
reset to zero automatically. This allows moving on to the next fastener immediately.

In the torque only displa y mod e, th e display shows the torque PRESET

In the an g le display m o de, the display shows the torque PRESET value for