Sealing strip, Cable connections, System grounding – Hypertherm THC ArcGlide User Manual

Page 171

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ArcGlide THC Instruction Manual 806450

171

4 – Maintenance

Sealing strip

Apply oil to the sealing strip behind the carriage at every lubrication interval.

1. Remove the front panel to access the carriage and sealing strip.

2. Apply a few drops of ISO Grade 100 heavy hydraulic fluid (Shell Tellus™ 100 heavy hydraulic fluid is recommended)

to the sealing strip.

3. Install the front panel.

4. Use the UP/DOWN switch to move the carriage along length of the sealing strip and distribute the oil.

Figure 45

Cable connections

Examine all cables regularly for chafing or unusual wear. If the outside insulation has been cut or otherwise damaged,
replace the cable. In particular, examine the ohmic contact wire.

System grounding

Verify that all components of the system are individually grounded to a driven earth ground. See

Recommended

grounding and shielding practices on page 55. Examine the work lead (+) connection, particularly where the
work lead (+) connects to the cutting machine. This must be a good, clean connection because a poor connection can
interfere with arc transfer.

WARNING!

ELECTRIC SHOCK CAN KILL

Do not disconnect cables when the system power is turned ON.

Apply a film of oil

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