108 HyPrecision Predictive waterjet pump Operator Manual 810120
5 – Preventive maintenance
Preventive maintenance
Assemble the intensifier
Refer to the Parts lists section, which starts on page 137.
Repair the hydraulic center section
The hydraulic center section includes the piston, the plungers, the hydraulic cylinder, the hydraulic end caps, the
low-pressure seals, and the proximity switches.
Preventive maintenance on these parts requires special tools. Contact a Hypertherm Technical Service Associate
for information and support regarding the installation, operation, maintenance, and repair of this equipment.
WARNING
Use 2 wrenches when loosening or tightening a high-pressure connection to prevent causing
damage or premature failure.
Do not tighten a fitting too much. The fitting can fail.
Put the parts on a clean, dry surface.
Before assembling high-pressure or hydraulic parts, clean the parts to remove grease and other
contamination.
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.
Use clean hands when changing high-pressure parts.
Repair the hydraulic center section every 12,000 hours.
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