166 HyPrecision Predictive waterjet pump Operator Manual 810120
7 – Troubleshooting
Troubleshooting
Water
Pressure
The orifice is defective.
Replace the orifice.
There is a leak.
Make sure that the intensifier does not stroke when it is in cut-pressure mode with the cutting head turned
off. If it does stroke, check the bleed-down valve and the high-pressure tubing for leaks.
A check valve is damaged.
Examine the check valves. Repair or replace them, if necessary.
The pump is in pierce-pressure mode or is set incorrectly.
Put the pump in cut-pressure mode. Make sure that the cut pressure is set correctly. Refer to
Pierce-pressure mode and cut-pressure mode on page 59.
The supply water is not turned on.
Turn ON the supply water.
A water filter is clogged.
Replace the water filters.
The relief valve on the pump manifold has failed.
Contact a Hypertherm Technical Service Associate for information and support.
The supply water pressure is too low
A pressure transducer in the water manifold senses the supply water pressure. If the value on the prefilter water-pressure
gauge is lower than 2.8 bar (280 kPa / 40 psi), the water pressure going to the intensifier is too low. When the pressure is
at a value that is lower than the setpoint, the monitoring circuit opens and causes a fault.
1
A leak from here can mean a problem with the
seal in the bleed-down valve.
2
A leak from here can mean an unsatisfactory
connection between the bleed-down valve and
the high-pressure tubing.
3
A leak from here can mean a problem with the
bleed-down valve needle and seat.
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