Tweco A80-A120 CutMaster - Manual (Page 78)

CUTMASTER A80, A120
SERVICE Manual 0-5119
5-6
5.06 Power Supply Basic Parts
Replacement
!
WARNING
Disconnect primary power to the system before
disassembling the torch, leads, or power supply.
This section describes procedures for basic parts
replacement. For more detailed parts replacement
procedures, refer to the Power Supply Service Manual.
A. Cover Removal
1. Remove the upper and lower screws which
secure the cover to the main assembly. Do not
loosen the lower screws inside the cut out slots
in the bottom of the cover.
Art # A-08429
Lower
Screws
Lower
Screws
Slots
Upper
Screws
2. Carefully pull the Cover up and away from the
unit.
B. Cover Installation
1. Reconnect the ground wire, if necessary.
2. Place the cover onto the power supply so that
slots in the bottom edges of the cover engage
the lower screws.
3. Tighten lower screws.
4. Reinstall and tighten the upper screws.
C. Filter Element Assembly Replacement
The Filter Element Assembly is in the rear panel. For
better system performance, the filter element should
be checked per the Maintenance Schedule (Subsection
5.02), and either cleaned or replaced.
1. Remove power from the power supply; turn
OFF the gas supply and bleed down the sys-
tem.
2. Remove the system cover. See "A Cover Re-
moval" in this section.
3. Locate the internal air line and the fitting from
the filter assembly. Number 1 in the following
illustration.
4. Hold a wrench or similar tool against the lock-
ing ring on the filter assembly fitting, then pull
on the hose to release it. (Numbers 2 and 3 in
the following illustration).
Art # A-07989
1
2
3 4
5
6mm
5. Remove the fitting from the filter element as-
sembly by inserting a 6 mm hex wrench into
the internal hex fitting and turning it counter
clock-wise (left). Numbers 4 and 5 in the previ-
ous illustration.
6. Disconnect the input line from the filter ele-
ment assembly.