Systematics, Inc. West Chester, PA. 19380
19
CONNECTING TIG PACK OR MHG7
SPOOL GUN
CHANGING FROM STANDARD MIG OPERA-
TION TO TIG PACK OPERATION. ALUMI-
NUM CAN NOT BE TIG WELDED WITH THIS
UNIT.
1. Unplug the wire feed motor plug
from the function receptacle.
2. Unplug the torch selector cable
and the work cable from the
welder front panel.
3. Plug the TIG PACK torch power
cable into the negative (-) weld
connector and plug the work
cable into the positive (+) weld
c o n n e c t o r . T h i s p r o v i d e s
straight polarity current as
required for TIG welding.
4. Plug the TIG PACK torch switch
cord into the welder function
receptacle.
5. Attach the TIG PACK torch gas
hose directly to the gas regula-
tor/flowmeter and adjust the
flow to 20 C.F.H.
NOTE
Pure Argon is the shielding
gas to be used for TIG
welding.
6. Follow the operating instruc-
tions in the TIG PACK manual
(Form WC5223).
7. To change back to standard MIG
operation, reverse the proce-
dure.
CHANGING FROM STANDARD MIG OPERA-
TION TO SPOOL GUN OPERATION
All current model PBE machines
are equipped with bulkhead gas
fittings for quick and easy chan-
gover from standard MIG operation
to spool gun operation.
1. Remove the thread cap from the
"SPOOL GUN" fitting.
2. Unscrew the selector hose from
the "MIG TORCH" fitting.
3. Move the selector hose to the
"SPOOL GUN"
fitting and tighten.
4. Install the thread cap (removed
in step 1) on the "MIG TORCH"
fitting to prevent dirt and
other contaminants from enter-
ing the unused gas line.
5. Unplug the wire feed motor plug
from the function receptacle.
6. Plug the MHG7 spool gun control
cable plug into the welder func-
tion receptacle.
7. Remove the torch selector cable
from the welder positive (+)
weld connector.
8. Plug the MHG7 gun cable fitting
into the welder positive (+)
weld connector.
NOTE
Make sure the welder pri-
mary gas hose and regula-
tor/flowmeter are con-
nected to a cylinder of the
proper shielding gas - 100%
Argon for aluminum and 98%
Argon + 2% O2 for stainless
steel and 75% Argon + 25%
CO2 for steel welding.
9. Follow the operating instruc-
tions in the MHG7 manual(Form
WC5120).
10.To change back to standard MIG
operation, reverse the proce-
dure.
FIG. 20. BULKHEAD CONNECTIONS
BULKHEAD
FITTINGS
SELECTOR
HOSE
WIRE FEED
MOTOR
WIRE FEED
MOTOR
PLUG
(PLUGGED
INTO
FUNCTION
RECEPTACLE)
LABEL
THREAD
CAP
