Enerpac VM43-LPS Manual Del Usuario página 8

Do not install pipe plug as final setting of this relief valve will
occur during the setting of the valve.
17. Grease ball, guide, spring (items 41,42,43) and insert into
cavity (see figure 4 for orientation). Screw in adjustment
screw (item 26) using 5/32" Allen and turn in 2 turns only.
Do not install pipe plug as final setting of this relief valve will
occur during the setting of the valve.
18. Install pin (item 28) if necessary.
19. Install o-rings (qty.4) (item 48).
20. Mount (item 51) onto Locking block, followed by mounting
to item 49 using screw (item 62) and torque to 32-39 ft-lbs
[43-53 Nm] using an 8 mm Allen wrench (see figure 1).
TO SET THE VALVE:
1. Mount valve onto pump.
2. Attach couplings to "A" and "B" ports of item 49.
3. Attach a V152 valve to the "B" port.
4. Attach a 0-15,000 psi [0-1034 bar] gauge to both "A" and
"B" ports.
5. Turn pump on. Rotate handle to point towards the "A" port.
Using a 1/8" Allen and a 9/16" wrench, pressurize valve by
slowly turning in the adjustment screw (item 2, figure 6) of
the relief valve assembly (item 58, figure 5) clockwise until
pressure builds to 7,500 psi +/-200 psi [517 +/-14 bar].
6. Hand torque lock nut (item 9, figure 6) to secure the setting.
7. Shift the valve to the neutral or center position and check for
pressure drift. Valve may drift down 5% from initial pressure
for the first 30 seconds and then stabilize. For example: at
7,500 psi pressure setting, the valve can only drift down 500
psi to a final pressure value of 7,000 psi in 30 seconds. For
the next 10 seconds a maximum pressure drop of 150 psi is
permitted.
8. If a pipe plug exist, unscrew the pipe plug (item 44) on the right
side of the valve. Unload the V152 by rotating the handle
counterclockwise so that no back pressure exists on the "B"
side of the valve. Shift the valve to the "B" side. Slowly rotate
the handle of the V152 clockwise to build backpressure in the
"B" side. Adjust screw (item 26) counterclockwise to reduce
pressure or clockwise to increase pressure. Set to 6000-6500
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9.
10. Rotate handle back to the center. Pressure shall remain at
11. Unload the V152 by rotating the handle counterclockwise.
12. If a pipe plug exists, remove pipe plug (item 44) on left side
13. Rotate black valve handle to the "B" side.
14. Slowly turn V152 handle clockwise and watch the gauge
15. Rotate the handle to the "A" side to again build pressure to
16. Rotate the handle to the neutral position. Unload the V152 by
17. Rotate the handle to the "B" side position. To increase the
18. Repeat steps 15 thru 17 until the target pressure setting of
19. Remove the gauges, and couplings.
8
psi [413-448 bar]. install pipe plug (item 44) and torque to 12-
15 ft-lbs [16-20 Nm].
Rotate handle back to the "A" side and build pressure to
7,500 psi [517 bar].
7,500 psi [517 bar].
of valve.
attached to the V152. While also watching the gauge on the
"A" port, check the pressure value on the "B" side that is
reached before the gauge on the "A" side drops in pressure.
The target value for the "B" side pressure setting is 3,700
psi. +/-200 psi [255 +/-14 bar].
7,500 psi.
rotating the handle to remove backpressure on the "B" side.
pressure setting on the "B" side turn in the set screw
clockwise. To decrease the pressure setting, turn out the set
screw counter-clockwise. Slowly turn V152 handle
clockwise and watch the gauge attached to the V152. While
also watching the gauge on the "A" port, check the
maximum pressure value on the "B" side that is reached
before the gauge on the "A" side drops in pressure. The
target value for the "B" side pressure setting is 3,700 psi. +/-
200 psi [255 +/-14 bar].
3,700 psi. +/-200 psi. [255 +/-14 bar] is reached. Then
install pipe plug (item 44) and torque to 12-15 ft-lbs [16-20
Nm].