Enerpac SQD-Series - Manual (Page 6)

IMPORTANT: Minimum age of the operator
must be 18 years. The operator is responsible
for the safety of other persons in the vicinity of
the job.
ATTENTION: In case of a interrupted current or
a failure of the pump, switch off the motor and
disconnect the torque wrench from the pump.
DANGER: Do not use electric-
powered pumps in hazardous
environments where explosion-
proof equipment is required.
5.1 Follow all instructions in this section
when:
1. Performing initial operation or start-up.
2. Changing a wrench on same pump.
3. Different torque values are needed, using
the same pump. For instance using
different Allen-key drives on the same
wrench (tables
and pages 10-11).
5.2 Pump requirements
The advance pressure (P or A) from pump to
wrench must be limited to a maximum 800 bar
[11,600 psi]. The pressure relief valve at the
retract side (B or T) of the pump must be set to
a maximum 120 bar [1740 psi].
IMPORTANT: Maximum oil flow to the torque
wrench: 12 l/min @ 140 bar [732 in
3
/min @
2030 psi] and 2 l/min @ 800 bar [122 in 3 /min @
11600 psi].
CAUTION: See
. Make sure all couplers
and hoses are fully connected and oil can flow
freely from (P to P) and (T to T). Incorrectly
mounted couplers can still be closed, with the
result that oil on the retract side (T or R) can be
pressurized by the advance side (P or V). The
safety valve in the retract side (T or R) of the
wrench (2) will open and vent oil to prevent
over-pressurization. This valve is factory set at
225 - 300 bar [3,260 - 4,350 psi].
5.3 Bleeding air from the system
During first-time operation, the hydraulic
system is filled with air. Remove air by
connecting the THC-700 series hoses to each
other and cycling the pump using the remote
control. If the torque wrench is connected, air
can also be removed by cycling the wrench
several times.
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 [1,450 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 - 1,1600 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 12-14 in this instruction sheet, or
torque versus pressure chart included with
each wrench. When using Allen-key drives
consult tables
and on pages 10-11 for
max. allowed torque.
A2 A1
C
B
10
A2 A1
6
10