Hypertherm MAXPRO200 Preventive Maintenance Program - Manual (Page 16)

12 MAXPRO200 Preventive Maintenance Program Instruction Manual 808800
Inspect gas line connections
Check all supply gas line connections by spraying them with soapy water. If bubbles appear on a gas line, tighten the
connection or replace it as necessary. Refer to
Part numbers for MAXPRO200 cables, hoses, and leads on page 20 for
lengths and part numbers.
Inspect for hose restrictions
Check for hose restrictions as follows:
 Check each hose to verify that it has no kinks or sharp bends that can restrict gas flow or damage the hose.
 If the cutting table uses a power track system to support leads from the power supply to the gas console or torch,
check the position of the leads in the power track to ensure the leads do not twist or kink, causing a possible
restriction.
Inspect cables
Check all cables for scratches or unusual wear. If the outside insulation has been cut or otherwise damaged, replace the
cable. Refer to
Part numbers for MAXPRO200 cables, hoses, and leads on page 20 for lengths and part numbers.
Inspect the ground connections
Verify that all components of the system are individually grounded to a driven earth ground, as described in the
Installation and Grounding section of your system’s instruction manual (807700).
Inspect the table-to-workpiece connection
Check the work lead (+) connection, particularly where the work lead (+) connects to the cutting table.
To prevent arc-transfer problems, there should be no paint, oil, or dirt on the workpiece that would prevent a clean
metal-to-metal contact between the work lead and the cutting table or workpiece.
CAUTION!
Do not clean brass connections with ammonia-based cleaners. Ammonia causes brass to crack and
become brittle.