Wren 10MXTA series, Руководство по эксплуатации и обслуживанию

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When the pressure is correct, turn the pump off and tighten the locking ring which is under
the “T” handle. This sets the pump pressure, which determines torque wrench output.
Once your target pressure is set and locked, cycle the hydraulic power pack once more to
ensure that your pressure setting did not change as you tightened the locking ring.
THE LOOSENING PROCESS
1. Set the pump to 10000 PSI. Change the drive to the loosening mode, assuring the reaction
arm abuts squarely on a solid reaction point.
2. Press and hold the remote control advance button. Pressure will decrease as the cassette
begins to turn. As the cylinder extends fully, you will hear an audible “click”.
3. Release the remote control advance button and the cylinder automatically retracts, at
which time you again hear the audible “click”.
4. Repeat this process until the fastener can be removed by hand.
NOTE: IF THE BOLT/NUT DOES NOT LOOSEN WITH THE ABOVE PROCEDURES, IT IS
AN INDICATION THAT YOU REQUIRE A LARGER HYDRAULIC TORQUE WRENCH TO
LOOSEN THE BOLT/NUT.
THE TIGHTENING PROCESS
1. Draulic torque wrench setting
Firstly, according to the design requirements set torque, If no design torque, please ref the
80% of the recommended torque.
Way: the setting torque=(the recommended torque of these chart figures)×(80%-90%)
For example: The recommended tightening torque is 90% of the chart figure above. For
example; for bolt M48 the strength grade is 8.8 therefore, the torque is 3920*90% = 3528Nm
2. Pump pressure setting
According to a desired torque value and the wrench model to set the pressure of the pump.
For example 8.8 grade
、
M48 bolt
,
the setting torque is 3528N
.
m, if you prefer to WR-4LOW
wrench, you may find the torque is 3528N.m, the pump pressure is 42Mpa, so the pump
pressure setting is 42Mpa.
3.Confirm the wrench is tightening,put the wrench on the nut,perform it until the nut does not
move far.
LOCKED-ON
Should the hydraulic torque wrench be “locked-on” after the final cycle, push down the
remote control advance button once more (to build pressure) and while maintaining this
pressure, pull back on the accuracy assurance pawl lever (located on the side of the tool).
Release the remote control advance button, while continuing to push down on the accuracy
assurance lever (this will allow the hydraulic torque wrench to be removed easily).
FIG 14
press down
direction