Hypertherm HT200LHF-200 Volt HySpeed - Manual (Page 86)

OPERATION
HySpeed HT2000LHF
Instruction Manual
4-33
7
Changing the Water Tube
Problems and causes you may find with a defective or improperly installed water tube:
• Short electrode life: The water tube is not screwed in tightly.
• Flow switch interlock shutting down the system: Water flow is restricted due to a loose water tube.
• Humming or rattling sound coming from the torch: The water tube is bent or loose.
If you suspect a problem with the water tube, you may need to replace it.
1. Disconnect the power supply from the power source.
2. Remove all consumables from the torch (see
Changing Consumable Parts
).
3. Look for any damage or bends in the water tube.
4. Remove and replace the water tube by using the water tube wrench supplied by Hypertherm –
Fig. 4-8.
When installing the water tube, do not overtighten it!
Tighten by hand only.
Figure 4-8 Changing the Water Tube
WARNING
Always disconnect the power supply
from the main power source before
inspecting or changing the torch parts.