Preventive Maintenance Program
20 809490 Instruction Manual XPR
Examine the gas line connections
Spray all of the gas line connections with soapy water. If bubbles appear on a gas line, tighten or
replace it as necessary. See Part numbers for hoses, cables, and leads on page 32 for lengths and
part numbers.
Examine the hoses
Examine each hose for kinks or sharp bends that can restrict gas flow or cause damage to the hose.
If the cutting table uses a power track system to support the leads that go from the power supply to
the gas console or torch, look at the position of the leads in the track. Make sure the leads do not
twist or kink. This can cause a restriction.
Examine the cables
Examine all cables for scratches or unusual wear. If the outside insulation is cut or has any other
damage, replace the cable. See Part numbers for hoses, cables, and leads on page 32 for lengths
and part numbers.
Examine the ground connections
Make sure that all components of the system are individually grounded to a driven earth ground. See
the Installation and Grounding section of your system’s instruction manual.
Examine the table-to-workpiece connection
Examine the work lead (+) connection where the work lead (+) connects to the cutting table.
Make sure that there is no paint, oil, dirt, or rust on the workpiece. This type of contamination
prevents a clean metal-to-metal contact between the work lead and the cutting table or workpiece.
It can also cause arc-transfer problems.
CAUTION
Do not clean brass connections with ammonia-based cleaners. Ammonia causes brass to crack and
become brittle.
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