Power Supply Basic Parts Replacement - ESAB Cutmaster 120 Manual De Instrucciones

ESAB CUTMASTER 120
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 NOTE 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.
Upper
Screws
Lower
Screws
Slots
Lower
Screws
Art # A-08429
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.
5-6
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 system.
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 locking
ring on the filter assembly fitting, then pull on
the hose to release it. (Numbers 2 and 3 in the
following illustration).
1
Art # A-07989
2
4
3
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 previous
illustration.
SERVICE Manual 0-5398
6. Disconnect the input line from the filter element
7. Remove the filter element assembly through the
8. Install the new or cleaned assembly by reversing
9. Turn ON the air supply and check for leaks before
Optional Single-Stage Filter Element
Replacement
These instructions apply to power supplies where the
optional Single-Stage Filter has been installed.
The Power Supply shuts down automatically when the
Filter Element becomes completely saturated. The
Filter Element can be removed from its housing, dried,
and reused. Allow 24 hours for Element to dry. Refer
to Section 6, Parts List, for replacement filter element
catalog number.
1. Remove power from power supply.
2. Shut OFF air supply and bleed down system
5
3. Disconnect gas supply hose.
4. Turn the Filter Housing Cover counter-clockwise
Manual 0-5398
assembly.
rear opening.
NOTE!
If replacing or cleaning just the filter
element refer to the following illus-
tration for disassembly.
Filter Element
Art # A-07990
these procedures.
reinstalling the cover.
before disassembling Filter to change Filter Ele-
ment.
and remove it. The Filter Element is located
inside the Housing.
SERVICE
ESAB CUTMASTER 120
Housing
Filter
Element
(Cat. No. 9-7741)
Spring
O-ring
(Cat. No. 9-7743) Assembled Filter
Cover
Barbed
Fitting
Art # A-02476
Optional Single-Stage Filter Element Replacement
5. Remove the Filter Element from the Housing and
set Element aside to dry.
6. Wipe inside of housing clean, then insert the
replacement Filter Element open side first.
7. Replace Housing on Cover.
8. Reattach gas supply.
NOTE!
If unit leaks between housing and
cover, inspect the O-ring for cuts or
other damage.
5-7