Section 5- Maintenance & Troubleshooting; Electric Shock; Hot Parts - MAC TOOLS MW145 Owner's Manual

SECTION 5- MAINTENANCE & TROUBLESHOOTING
~a
WARNING
ELECTRIC SHOCK
can
kill.
Do
not
touch live electrical
parts.
Turn Oft welding
power source,
and disconnect
input power before inspecting, maintaining,
or
;ervicing.
HOT PARTS
can cause severe
burns.
Allow cooling period before maintaining
or
servicing.
MOVING PARTS
can cause
injury.
Keep away from moving
parts.
Keep away from
pinch points such
as
drive rolls.
Maintenance and troubleshooting to be
performed
qualified
persons.
swarn8 2 2/93
Table 5-1. Maintenance Schedule
Time Maintenance
Before each
use.
Tighten
all connections. Check gun and clean nozzle.
After each
spool
of wire. Blow out
gun
liner. Clean and check wire drive
parts;
replace
as necessary.
Every 3 months. Tape
or
replace cracked cables;
clean and
tighten
connections.
Replace
unreadable labels.
Every 6 months. Blow out
or vacuum
inside of unit.
5-1. Overload Protection
WARNING
READ
Sectio
SAFETY
n
5 befor
BLOCKS at start of
e
proceeding.
Figure 5-1. Overheating
A. Overheating
~I
~
-*
T~
+
~5
minutes
When overheated,
thermostat
opens,
output stops,
and cooling
fan keeps running.
Let fan
run
for
15 minutes.
Start welding.
ssblO.1
1/94
-.
Ref.
ST-8O1
021
.
OM-173 123 Page 11