Hypertherm HyPrecision 50S, Operator'S Manual

Page: 161 / 202

HyPrecision 50S/60S/75S Operator Manual 808690 161
7 – Troubleshooting
Tr
oubleshooting
If the intensifier overstrokes in both directions

Instructions about how to disassemble the intensifier and how to repair or replace parts start on page 97.
Possible cause Solution
The orifice is worn, has failed, or is improperly
installed.
A worn or damaged orifice increases the demand for
high-pressure water from the intensifier.
Reinstall or replace the orifice.
The high-pressure water seals are worn or damaged. Replace the high-pressure water seals.
The high-pressure plumbing (a water line or a fitting)
is leaking.
Identify the source of a leak and correct the problem.
The bleed-down valve is leaking. Repair or replace the bleed-down valve.
The needle and the seat in the cutting head are
leaking.
• Repair or replace the cutting head.
• Repair or replace the on/off valve.
• Replace the needle and the seat.
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 monitor for leaks.

Contact a Hypertherm Technical Service Associate
for assistance.
The postfilter water-pressure gauge shows that the
low-pressure water is at less than 2.76 bar
or 275.79 kPa (40 psi).
If the difference between the values on the pre- and
postfilter water-pressure gauges is higher
than 0.69 bar or 68.95 kPa (10 psi), replace both
water filters.
The prefilter water-pressure gauge shows that the
low-pressure water is at less than 2.76 bar
or 275.79 kPa (40 psi).

The intensifier can starve for water without
activating the low-pressure alarm for the
low-pressure water.
• Make sure that the water to the pump is turned on.
• Make sure that the water valve is closed.
• Make sure that the low-pressure water is
connected to the intensifier.
• Loosen a brass fitting after the low-pressure water
solenoid while the pump is running. Water should
stream immediately from the loosened fitting.