Tweco FP-55 - Manual (Page 28)

SERVICE 5-2 Manual 0-2846
2. Unscrew the bowl on the bottom of the Filter/Regu-
lator Assembly. The filter element will be visible
and still attached to the main body of the Filter/
Regulator.
3. Grasp the filter element and unscrew it from the
Filter/Regulator body. The filter element will come
off with a spool and some additional pieces.
4. Note the correct assembly of the filter/spool then
remove the filter from the spool and either clean it
or replace it.
5. The filter element and spool, with the baffle ring in
place (teeth facing downward) can be screwed back
into the Filter/Regulator body by compressing the
spring on the spool. Tighten firmly by hand.
6. Reinstall the bowl.
7. Turn on the air supply.
C. Optional Single-Stage Filter Element
Replacement
NOTES
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 hous-
ing, dried, and reused. Allow 24 hours for Element
to dry.
1. Remove power from power supply.
2. Shut off air supply and bleed down system before
disassembling Filter to change Filter Element.
3. Disconnect gas supply hose.
4. Turn the Cover counter-clockwise and remove it
from the Filter Housing. The Filter Element is lo-
cated inside the Housing.
A-02476
Filter
Element
(Cat. No. 9-7741)
Housing
Cover
Barbed
Fitting
Spring
Assembled Filter
O-ring
Figure 5-2 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 re-
placement Filter Element open side first, as shown
in Figure 5-2.
7. Replace Housing on Cover.
8. Reattach gas supply hose.
NOTE
If unit leaks between housing and cover, inspect the
"O" Ring for cuts or other damage.
5.03 Common Faults
1. Insufficient Penetration
a. Cutting speed too fast
b. Torch tilted too much
c. Metal too thick
d. Worn torch parts
e. Cutting current too low
f. Non-Genuine Firepower Parts used
2. Main Arc Extinguishes
a. Cutting speed too slow
b. Torch standoff too high from workpiece
c. Cutting current too high