High-Pressure Water System: Bleed-Down Valve; Remove The Bleed-Down Valve From The Pump - Hypertherm HyPrecision Predictive P-15 Operator's Manual

5 – Preventive maintenance

High-pressure water system: Bleed-down valve

WARNING
Repair the bleed-down valve:
• Every 1,000 hours
• If water leaks from the W
Replace the bleed-down valve every 3,000 hours.
Refer to the Parts lists section, which starts on page 137.

Remove the bleed-down valve from the pump

Parts, tools, and materials
5/8-inch open-ended wrench
3/4-inch open-ended wrench
13/16-inch open-ended wrench
1-inch open-ended wrench
Phillips screwdriver
Do this task when the pump is not operating.
1. Disconnect the compressed air supply hose from the fitting on top of the actuator.
2. Disconnect the water drain tube from the bleed-down valve.
3. Remove the gland nut on the high-pressure collar at the high-pressure fitting of the valve.
4. Remove the bleed-down valve assembly from the pump.
122
Do not tighten a fitting too much. The fitting can fail.
Identify the source of a leak and correct the problem. Refer to Leaks on page 163.
A leak can cause damage to the water fittings.
Put the parts on a clean, dry surface.
Examine parts that are being replaced to identify wear patterns or damage that can show other
problems.
Clean each part with a towel and isopropyl alcohol. Examine all parts for deterioration, corrosion,
or damage.
Do not use soap, detergent, or solvents.
W O connection or from the weep holes while the pump is operating
ASTE ATER UT
HyPrecision Predictive waterjet pump Operator Manual 810120