Troubleshooting
166 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
The hydraulic fluid level is too low.
A float switch in the hydraulic fluid
tank causes an alarm when the
hydraulic fluid level is too low.
Make sure that the hydraulic fluid
level is at the top mark on the sight
gauge.
A hydraulic fitting or a hydraulic hose
is leaking.
• Fix the leak.
• Tighten the fitting to the correct
torque value.
• Replace the hose.
• Replace the O-ring.
Hydraulic fluid was lost during
maintenance.
Add hydraulic fluid.
Water leaks into the hydraulic fluid. In water-cooled systems, water can
enter the hydraulic system through
the heat exchanger.
Contact a Hypertherm Technical
Service Associate for information and
support.
The hydraulic fluid in the tank has
a milky appearance.
A leaking high-pressure seal in the
intensifier can push water past the
energized seal spring energized seal
spring and into the hydraulic fluid.
Contaminated hydraulic fluid can
cause damage to the hydraulic pump.
Replace the hydraulic fluid.
Water-cooled system
The heat exchanger has failed.
It could be necessary to drain
and flush other areas such as
the shift valve, the hydraulic
manifold, and the hydraulic
pump.
Examine the parts, including the inner
surfaces of the hydraulic fluid tank,
the hydraulic hoses, and the seals.
Look for flaws, deterioration, erosion
marks, corrosion, or cracks.
If damage is found, replace the
component.
Problem Cause Solution
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