Operating Instruction Manual:
OM-TPE-A-01
Serial Numbers:
All
18
6.2. Setting the Pressure (Torque)
Before setting the pump pressure it is necessary to determine what pump pressure will result in the torque
value required.
Use the tool-specific pressure-torque conversion chart provided with the torque wrench to determine the
pump pressure that corresponds to the required torque value.
The procedure for setting the pump pressure
MUST
be carried out with the torque tool
attached to the pump but
NOT
fitted onto a nut or bolt
The procedure for setting the pump pressure is as follows:
1. Loosen the wing nut [1] below the adjustable relief
valve knob and turn the relief valve knob [2]
fully anti-clockwise.
2.
Turn the pump ON by pressing the ‘advance
button’ once. (
See figure 6.2
)
3.
Press and hold down the ‘advance button’ on the
pendant. The tool will advance and stop at its
maximum stroke, this is correct.
4. While holding the pump in advance mode, slowly
turn the relief valve knob [2] clockwise and watch
as the pump pressure on the gauge rises.
When the pressure reaches your desired value,
stop turning the knob and allow the gauge to settle.
5. If the pressure continues to rise above the desired
pressure, release the advance button and back the
pressure off slightly, to below the target pressure,
by turning the knob anti-clockwise.
IMPORTANT:
The pressure must
ALWAYS
be adjusted from a lower pressure up to the target
value,
NEVER
down from a higher pressure to the target pressure.
6. Re-press the advance button on the pendant and slowly increase the pressure until the desired
pressure is achieved.
7. While holding the pump at the desired pressure, tighten the wing nut against the valve body. This
will lock in the pump pressure at the correct level for the required torque tool output.
8. Release the advance button and allow the tool to retract fully.
9. Cycle the pump one more time to confirm the correct pressure and ensure nothing changed while
fastening the wing nut.
Figure 6.1: Setting the Pressure Relief Valve
