Hypertherm HyPrecision 15, Operator'S Manual

Page: 91 / 194

HyPrecision15/30/50 Operator Manual 808240 91
5 – Preventive maintenance
Preventive maintenance
Repair the bleed-down valve
Replace the bleed-down valve body after every 3,000 hours of operation.
Replace this part if water leaks from the wastewater outlet or from the weep holes while the pump is running.
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Refer to the Parts lists section, which begins on page 147, for part numbers and ordering information.
Required tools, materials, and parts
11328 On/off valve and bleed-down valve repair kit
11743 Bleed-down valve flow reducer
Do this task when the pump is not running.
1. Disassemble the bleed-down valve. Refer to page 131 for instructions.
2. Discard the used parts.
3. Install the new parts.
4. When all maintenance tasks are complete, reassemble the parts. Refer to page 133 for instructions.
CAUTION
Failure to correct the cause of a leak can result in damage to the fittings.
CAUTION
Overtightening a fitting can cause it to fail. Use 2 wrenches when loosening or tightening a high-pressure
connection. Using only 1 wrench can increase bending stress to the parts and cause damage or premature
failure.
Repair or replace parts identified in the preventive maintenance schedule or if the parts show signs of
deterioration, corrosion, or damage.
Put the parts on a clean, dry, oil-free surface.