Hypertherm HyPrecision 15, Operator'S Manual

Page: 157 / 194

HyPrecision15/30/50 Operator Manual 808240 157
7 – Troubleshooting
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7. If the intensifier overstrokes in both directions, check these possible causes.

Instructions about how to disassemble the intensifier and how to repair or replace its parts begin on page 102.
Possible cause Solution
The orifice is worn, has failed, or is improperly installed. Reinstall or replace the orifice.
The high-pressure water seals are worn or damaged. Replace or replace the high-pressure water seals.
The high-pressure plumbing (a water line or a fitting)

is leaking.
Find and repair the leak.
The bleed-down valve is leaking. Repair or replace the bleed-down valve.
The needle and seat in the cutting head are leaking. Repair or replace the cutting head.
The low-pressure water relief valve is venting water to
the drain.
Remove the 3/8-inch tubing from the valve at the outlet
fitting and check for water leaking.

Call Hypertherm for help with adjusting the valve.

The postfilter water-pressure gauge shows that the
pressure for the inlet cutting water is lower than 2.8 bar
or 275 kPa (40 psi). If the difference between the values on the pre- and
post-filter water-pressure gauges is higher than 0.7 bar
or 69 kPa (10 psi), replace both water filters.
The prefilter water-pressure gauge shows that the
pressure of the inlet cutting water is lower than 2.8 bar
or 275 kPa (40 psi).

The intensifier can starve for water without activating
the low-pressure alarm for the inlet cutting water.
• Make sure that the inlet cutting water supply is turned
on.
• Make sure that the water valve is closed.
• Make sure that the low-pressure water is connected
to the intensifier.
• Check the inlet cutting water solenoid by loosening a
brass fitting after the solenoid while the pump is
running. Water should immediately stream from the
loosened fitting.