162 HyPrecision Predictive waterjet pump Operator Manual 810120
7 – Troubleshooting
Troubleshooting
High-pressure water seal life is short
Make sure that the mating surfaces are smooth and clean.
Repair or replace the high-pressure cylinder and plunger.
Make sure that the water quality is within satisfactory ranges. Refer to the Water quality section, which begins
on page 188.
Examine the ends of the high-pressure cylinder for cracks.
Replace the high-pressure water seals and hoops.
Check the air pressure in the water accumulator tank. Refer to Measure the air pressure in the water
accumulator tank on page 92 for instructions.
Replace the high-pressure cylinder.
Make sure the proportional control is operating correctly.
Make sure that the flow and water pressure are sufficient.
If the high-pressure seal backups have a short life, make sure that the plunger bearing is not worn.
Instructions about how to disassemble the intensifier and how to repair or replace parts start on page 97.
Hydraulic fluid
Temperature
Water-cooled system
The cooling water is not turned on.
Turn ON the cooling water
The cooling water is too warm.
If the cooling water or the supply water temperature is higher than 24.0°C (75°F), cool the water before use.
Water that is too warm is not good for cooling and can shorten high-pressure seal life.
Air-cooled system
The ambient temperature is too high.
Consider supplemental cooling.
The fan is not generating enough airflow.
Make sure that the fan motor breaker is not tripped.
Make sure that the heat exchanger fins are not dirty or clogged.
The thermal overload relay turned off the fan motor.
Refer to page 157.
The cooling water temperature is too high
Do not adjust the setting on the thermal overload relay unless instructed to do so by a
Hypertherm Technical Service Associate.
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