Hypertherm PAC500 Water Injection Plasma Cutting System - Manual (Page 45)

5-4 PAC500 Instruction Manual
4
MAINTENANCE
Changing the Water Tube
WARNING
Always disconnect the power supply
from the main power source before
inspecting or changing the torch parts.
Water Tube
If the water tube is improperly installed, loose or bent, you may experience some difficulties such as: short
electrode life, flow switch interlock shutting down the system, or humming or rattling sound coming from the torch.
If you suspect a problem with the water tube, you may need to replace it.
1. Remove all consumables from torch (see above).
2. Look for any damage or bends in the water tube. The water tube should be recessed from the face of the torch
head by about 11/32" (8.5 mm). Check for tightness.
3. Remove and replace the water tube (120035) by using the water tube wrench (027347) supplied by
Hypertherm. When installing water tube, do not overtighten! Snug down by hand only.
Retaining Caps
Nozzles
Electrode Water Tube
Current Ring
Swirl
Ring