Service manual introduction, Routine maintenance, Aintenance – Hypertherm Powermax900 Service Manual User Manual
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M
AINTENANCE
3-2
Service Manual
INTRODUCTION
This section provides service technicians with routine maintenance, theory of operation and
troubleshooting of the power supply. Also included in this section is the sequence of operation,
power board and control board test points, and the removal and replacement procedures for the
PAC125T trigger torch and PAC125M machine torch parts.
ROUTINE MAINTENANCE
Bowl Draining/Filter Element Cleaning
Moisture coming out of the torch can cause the torch to sputter and hiss. If there is moisture, purge
the lines. If moisture builds up in the bowl of the filter at the rear of the power supply, drain the bowl
and clean the filter element:
1.
Shut the gas supply off and disconnect the gas supply hose from the filter assembly
before proceeding.
2.
Remove the cap at the bottom of the filter bowl and turn the knurled drain valve to the right to
release water from the bowl.
3.
Unscrew the filter bowl.
4.
Unscrew the filter element. See
Powermax900 Field Upgrade Kits and Optional Parts in
Section 4 for part number information.
5.
Clean filter element with alcohol, then blow out with air from the inside of the filter element.
Clean the bowl with household soap only.
6.
Replace the filter element and filter bowl.
7.
Reconnect the gas supply hose.
Cap
Gas supply hose
connection
Filter Bowl
Filter element
Figure 3-1 Filter Assembly