Bosch HTH181 Instrucciones De Funcionamiento Y Seguridad página 11

BM 2610027764 09-12_BM 2610027764 09-12.qxp 9/14/12 1:28 PM Page 11
VARIABLE SPEED CONTROLLED
TRIGGER SWITCH
Your tool is equipped with a variable speed
trigger switch. The tool can be turned "ON" or
"OFF" by squeezing or releasing the trigger.
The speed can be adjusted from the minimum
to maximum nameplate RPM by the pressure
you apply to the trigger. Apply more pressure
to increase the speed and release pressure to
decrease speed (Fig. 1).
FORWARD/REVERSING
LEVER & TRIGGER LOCK
After tool use, lock trigger in
CAUTION
"OFF" position to help prevent
accidental starts and accidental discharge.
Your tool is equipped with a forward/
reversing lever and trigger lock located above
the trigger (Fig. 5). This lever was designed
for changing rotation of the bit, and for locking
the trigger in an "OFF" position.
For forward rotation, (with tool pointed away
from you) move the lever to the far left.
For reverse rotation move the lever to the far
right. To activate trigger lock move lever to
the center off position.
Do not change direction of
WARNING
rotation until the tool
comes to a complete stop. Shifting during
INSTALLING FASTENERS
To fasten: Start the fastener by hand on to or
in to its threaded counter part (E.G. nut on to
bolt, bolt in to nut or threaded hole).
Next, with the proper impact socket securely
mounted to the wrench, slide the impact
socket on to the nut or bolt head . Hold the
tool securely with both hands and squeeze
the trigger switch. The impact socket will turn
the fastener and impacting will begin once the
fastener encounters resistance. See the
following chart to estimate the amount of
impact time required to obtain a desired
torque.
To loosen: With the proper impact socket
securely mounted to the wrench, slide the
impact socket on to the bolt head. (be sure
the rotational direction is "reverse").
Operating Instructions
rotation of the tool can cause damage to the
tool.
Your tool is also equipped with a light that turns
on automatically when the switch is activated,
for
(Fig. 1).
Operating Tips
Hold the tool securely with both hands and
squeeze the trigger switch. The tool will start
to impact immediately. Once the fastener has
"broken loose" it will start to unthread. Be
careful that you do not allow a fastener to
spin freely once it is no longer engaged with
the other threaded part as it may be thrown
out of the socket.
The tightening torque depends on the duration
of the impacting/tightening action. The largest
tightening torque is achieved after approx. 6 to
10 Sec. impacting/tightening action.
The torque build-up depends on the
following factors:
• Hardness of the bolts/nuts.
• Type of washer (disk washer, spring washer,
seal).
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FORWARD/REVERSING
LEVER & TRIGGER LOCK
FIG. 5
BUILT IN WORK LIGHT
better visibility when
TIGHTENING TORqUE
driving