MAC TOOLS MW13O - Read Safety; Troubleshooting

4-3.
Gun
Maintenance
4-4.
Troubleshooting
READ
SAFETY BLOCKS at
start
of
Section
4
before
proceeding.
Trouble
Remedy

-~
Secure
power
cord
plug
in
receptacle.
 

Motor
fuse
Fl
open,
replace
fuse.
 
-~
Replace
building
line fuse
or
reset
circuit
breaker
if
open.
 
-~
Secure
gun
trigger
leads
or
repair
leads, or
replace
trigger
switch.
 


-~
Thermostat
TPI
open
(overheating).
Allow fan
to
run:
the
thermo-


-~
stat
will
close
when
the
unit
has cooled.

-~
Connect
work
clamp
to
get
good
metal
to
metal
contact.
 
-~
Replace
contact
tube.


-

-~
Connect
unit
to
proper
input
voltage
or
check
for low line
voltage.
J

.J
Section
2-3
4-lB
 
2-5
4-lA
Figure
3-2
4-3
2-3
does
not
feed.
does
not
feed:
fan

and
pilot
light
feeds.

FLYING
METAL
CHIPS
AND
DIRT
can
cause
injury
and
damage
equipment.

Point
gun
away
from
people
and
in
a
safe
direction when
blowing
out
with
compressed
air
READ
SAFETY
BLOCKS
at
start
of
Section
4
before
proceeding.
Tools
Needed:
3/8
in.
5/16
in.
swarr~lC
109
Turn
OFF
and
unplug
unit.
1
Wire
Spool
Cut
welding
wire off
at contact
tube.
Retract
wire
onto
spool
and
se
cure.
3
4
5
2
Gun
Securing
Nut
Disconnect
trigger
leads. Loosen
nut
and
remove
gun
and
trigger
leads.
6
3 Nozzle
4
Contact
Tube
5
Head
Tube
6
Liner
Collet
Disassemble
gun
as
shown.
7
Liner
Pull
liner
from
this
end.
Blow
gun
casing
out
with
compressed
air.
Insert
new
liner
into
gun
casing
until
even
with
end
of
head tube.
Install collet
onto
liner.
Install
contact
tube
and nozzle.
Insert
gun
into
feeder
and mark
where
liner
touches
drive
roll.
Re
move
gun
and
cut
liner
off. Rein
stall
gun
so
that
liner
is
as
close
as
possible
to
drive rolls
without
touching.
Thread
welding
wire
(see
Section
2-6).
Close
door.
Figure
4-3.
Gun
Maintenance
Ret. 5T-
155
506
/
Ret. ST.
155
509
OM-154
404
Page
8