Tighten loosen – Enerpac HXD-Series User Manual

Page 8

5.4 Pressure and torque setting
Read the pump instructions. Without placing
the wrench on the bolt or nut, operate the
pump in the advance direction.

IMPORTANT: Before using the pump with
the torque wrench on a bolt or nut make a
functional test at maximal 100 bar [1450 psi].

Set the required torque by adjusting the
pressure relief valve on the advance side (P)
of the pump and reading the value on the
pressure gauge.

When making bolted connections always
consult the manufacturers instructions or the
engineering recommendations.

Pressure setting can be adjusted between
40 - 800 bar [580 - 11600 psi]. Adjust the
pressure relief valve setting by turning the
spindle on the pump:
• clockwise = higher pressure (torque)
• counter-clockwise = lower pressure (torque)

Set the torque by consulting the tables

and

on pages 12-18 in this

instruction sheet, or pressure versus torque
chart included with each wrench. If using
various cassettes or reducer inserts on the
same wrench consult the tables

and

on pages 12-15 for maximum torque.

5.5 Loosening and tightening

WARNING: Switch off the pump

before changing cassettes, reducer
inserts or wrench position.

Before positioning the wrench on the bolt or
nut, assemble according to paragraph 4.0.

See

for correct wrench position. Make

sure pump is not running. Pre-tension the
bolt manually by using the wrench. See
safety issues

. Place the wrench on

the bolt connection so that the bolt head or
nut is fully enclosed by the wrench.

5.6 Determining the reaction point

WARNING:

To avoid personal injury

keep hands away from support arm and
working area during operation.

DANGER: Never react off loose
pieces. The force of the wrench
could cause loose pieces to
become flying objects.

TIGHTEN

LOOSEN