Warning and shutdown conditions
1. Low inlet water pressure (warning and shutdown)
Filters are dirty Replace 0.5 and/or 1 micron inlet water filters.
Inlet water turned off or incoming wa
-
ter supply interrupted
Inspect supply valves and hoses.
2. High hydraulic oil temperature (warning and shutdown)
Incorrectly adjusted cooling circuit Adjust cooling water flow control valve on pump bulkhead.
Faulty heat exchanger Inspect and replace heat exchanger.
Damaged intensifier low-pressure
cylinder
Refer to manual M-376, Hyperpressure™ Intensifier
3. High check valve temperature (warning)
Worn check valve See Servicing the check valve in manual M-376, 94K Hyperpressure™ Intensifier
Fractured check valve body See Servicing the check valve in manual M-376, 94K Hyperpressure™ Intensifier
Fractured outlet check valve seat See Servicing the check valve in manual M-376, 94K Hyperpressure™ Intensifier
Damaged outlet check valve poppet See Servicing the check valve in manual M-376, 94K Hyperpressure™ Intensifier
4. High bleed-down valve temperature (warning)
Worn bleed-down valve See Servicing the bleed-down valve
Worn or damaged bleed-down valve
poppet and or seat
See Servicing the bleed-down valve
Fractured bleed-down valve seat See Servicing the bleed-down valve
5. Low hydraulic oil level (shutdown)
Oil level in reservoir is low. Check for leaks; add hydraulic oil.
Note: Make sure the oil level is between the high level mark and the top edge of the
indicator glass. An oil shutdown will occur approximately 1 in. below the high level
mark.
6. Intensifier motor overload (shutdown)
Incoming voltage is low on one or
more 3-phase legs.
Check plant power supply.
Motor starter failure. Check operation of contactor; replace if necessary.
Hydraulic pump is seized or bound. Inspect hydraulic pump.
Motor is faulty. Replace if necessary.
© Flow International Corporation M-390 | 39
CHAPTER 4
Maintenance & Troubleshooting
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