Hypertherm HyPrecision 15, Operator'S Manual

Page: 69 / 194

HyPrecision15/30/50 Operator Manual 808240 69
5 – Preventive maintenance
Preventive maintenance
Examine the pump for leaks or damage
Do this task when the pump is running and the system is pressurized.
1. Examine the pump for signs of hydraulic fluid leaks. Pay attention to these areas.
 Hydraulic fluid tank access cover
 Hydraulic connections
 Valves
 Top and bottom decks
2. Examine the low-pressure pipes and hoses for leaks.
3. Examine the high-pressure tubing for leaks.
4. Make sure that all of the fittings are tight.
5. Examine the weep holes and leak points at both of the high-pressure ends for leaks. Water seeping from a weep hole
is a sign of a faulty part, a loose connection, or a damaged connection.
If a leak is found, identify the source and repair the problem. Refer to the Troubleshooting section, which begins on
page 153.

If a fitting is not tight, high-pressure water can cause the fitting to become hot.
WARNING
Use a piece of cardboard or other solid material to find leaks when the pump is operating. Do not use hands,
cloth, paper, or towels.
CAUTION
Failure to correct the cause of a leak can result in damage to the fittings.
Repair or replace parts identified in the preventive maintenance schedule or if the parts show signs of
deterioration, corrosion, or damage.
1 3 4 2
1 Output adapter weep hole
2 High-pressure seat weep hole
3 Static seal leak point
4 Dynamic seal housing weep hole