Replacing a complete intensifier assembly
The intensifier assembly can be removed from the
pump frame as a single unit. This is useful if the intensi-
fier has failed, if there is an exchange intensifier assem-
bly ready to be installed, and if pump operation cannot
be interrupted long enough to repair the intensifier in
place on the pump frame.
Removing the intensifier assembly
WARNING
Place the main electrical disconnects in the OFF
position and bleed down all high-pressure lines.
Place Out of Service tags on the main electrical
disconnects and lock them
. Failure to do so can
result in equipment damage or injury to personnel.
1. Shut down the system. Close the external inlet fil-
tered water hand valve, where installed.
2. Disconnect the inlet water supply hoses at both
intensifier end caps.
3. Disconnect and remove the high-pressure tubing
assemblies from the intensifier.
4. Disconnect the shift sensor cables from the shift
module extension cables.
5. Place absorbent pads under and around the hydrau-
lic hose connections to the intensifier manifold.
Disconnect the two hoses from each the intensifier
end bells. Install caps in the end bells to reduce oil
spillage.
6. Remove the two screws (
15
16
-in. A/F) that hold the in-
tensifier and base plate to the pump frame.
7. Using suitable lifting equipment, remove the com-
plete assembly from the pump frame.
Note
:
The intensifier assembly weighs 265 lb
(120 kg).
Reinstalling the assembly
1. Using suitable lifting equipment, lower the intensifier
assembly into place on the pump frame.
2. Replace the two screws that hold down the base
plate.
3. Remove the caps from the end bells; make sure the
hose flange o-rings are in place, then connect the
hoses and tighten the hose flange clamps screws.
4. Connect the shift sensor cables to the intensifier shift
module.
5. Install and connect the high-pressure tubing assem-
blies to the intensifier.
6. Connect the inlet water supply hoses at both intensi-
fier end caps.
7. Verify that the intensifier assembly is complete, that
shift sensors are in place, and that fasteners are
properly tightened.
8. Open the external filtered water inlet hand valve, if
installed.
9. Remove the
Out of Service
tags from the main elec-
trical disconnects.
Note
: Air will be automatically purged from the in-
tensifier assembly on next start-up of the pump unit
as it refills the intensifier and manifold. This will
cause the oil level to drop. Check the oil level in the
reservoir sight gauge and add fresh oil until the level
is at the high mark.
10. Run the pump unit at low pressure for 3–5 minutes
while checking for leaks.
Remove tools, parts and rags from the pump unit. The
pump unit is ready for operation.
© Flow International Corporation
M-390 | 59
CHAPTER 5
Servicing the Pump
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