Hypertherm XPR300, Instruction Manual

Page: 236 / 402

Maintenance
7
236 809480 Instruction Manual XPR300
4. Examine all of the fittings that connect the hoses, cables, and leads:
a. Tighten loose connections if found, but do not make the connections too tight.

See Table 11 on page 48 for torque specifications.
b. Order a replacement hose, cable, or lead set if you find its fitting has damage or excess
wear. Replacement sets are available from Hypertherm.

Individual fittings for external hoses, cables, and leads are not
replaceable. If you find a problem with an external fitting, you must order a
replacement hose, cable, or lead set (with integrated fitting).

Some hose fittings inside of the plasma power supply are replaceable.
For part numbers and specifications, see the Parts List on page 327.
5. Make sure that the hoses, cables, and leads do not twist or kink during torch movement and
system operation. Adjust them if needed.
6. Before you supply power to the cutting system, always complete all inspection and maintenance
tasks.
Examine the consumable parts, torch, and torch receptacle
Remove the torch and consumable parts
1. Remove the power from the cutting system. See Remove the power from the cutting system on
page 234.
2. Loosen the torch coupler nut to release the torch from the torch receptacle.

The torch and consumables can be hot. Wear gloves to protect your
hands.
3. Put the torch and torch receptacle on a surface that is:

Clean

Dry

Oil-free
4. Turn the shield cap counter-clockwise to release and remove the shield.
5. Turn the nozzle retaining cap counter-clockwise to release and remove the nozzle and swirl ring.