INSTRUCTION MANUAL:
Model Series: TWM50/100/200/300/400/550/850
Hi-Force Limited – Prospect Way – Daventry – Northants NN11 8PL – United Kingdom
Tel: +44(0) 1327 301000: Fax: +44(0) 1327 706555: Website: www.hi-force.com
Maintenance
Testing and Calibrating
FAULTY TIGHTENING TORQUE HAZARD
An un-calibrated torque wrench can cause
screw connections, the torque wrench and
accessories to fail and produce faulty screw
connections. This might cause SERIOUS INJURY
or DEATH.
Always use tested and calibrated torque
wrenches ONLY. Always use tested torque
testing equipment ONLY.
Powerful forces are at work when using the
torque wrench. When torque wrenches are not
tested or not serviced there is a risk that they
will not bear the loads or will indicate faulty
tightening torques. ALWAYS take the following
safety information into account in order to
prevent SERIOUS INJURY or DEATH:
ALWAYS test the accuracy of the torque
wrench with an approved torque tester
before use.
NEVER use a faulty torque wrench.
ALWAYS have the torque wrench
calibrated on a regular basis.
According to DIN EN ISO 6789 the minimum
calibration interval requirement for a torque wrench
is one year or 5000 load cycles (whichever case
occurs first). A firm’s own specifications or quality
requirements for screwing applications can also
lead to considerably shorter calibration intervals.
WARNING
NEVER neglect recalibrating the torque wrench.
Improper calibration can
cause the torque wrench
to be damaged.
Calibration should ONLY be implemented by
authorized specialists,
an accredited
calibration
laboratory or the manufacturer.
A calibration certificate as per DIN EN ISO 6789
comes with every new torque wrench. The torque
wrench and the calibration certificate are labeled
with the identical serial number.
For full and comprehensive details on this piece of
equipment and all of the Hi-Force range of torque &
tension bolting tools please go to:
