Miller S-74 Boom w/Drive Panduan Pemilik - Halaman 21
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5-1. Routine Maintenance
3 Months
Replace
unreadable
labels.
Replace
cracked
parts.
6 Months
Blow out or vacuum
inside. During heavy
service, clean
monthly.
5-2. Troubleshooting
Trouble
Wire feeds, shielding gas flows, but
electrode wire is not energized.
Wire feeder is on, display does not light
up, motor does not run, gas valve and
welding power source contactor do not
pull in.
Electrode wire feeding stops or feeds
erratically during welding.
Motor runs slowly.
Wire feeder power is on, displays light
up, but unit is inoperative.
SECTION 5 − MAINTENANCE
Clean and
tighten
weld
terminals.
Check
14-pin cord.
Or
Check interconnecting cord connections. If secure, check cord for continuity and repair or replace
(see Sections 4-6 and 4-7).
Check and reset circuit breaker at welding power source.
Check gun trigger connection. See gun Owner's Manual.
Check gun trigger. See gun Owner's Manual.
Readjust hub tension and drive roll pressure (see Section 4-11).
Change to correct size drive roll (see Table 6-1).
Clean or replace dirty or worn drive roll.
Incorrect size or worn wire guides.
Replace contact tip or liner. See gun Owner's Manual.
Remove weld spatter or foreign matter from around nozzle opening.
Have Factory Authorized Service Agency check drive motor or motor control board PC1.
Check for correct input voltage.
Check welding gun trigger leads for continuity, and repair leads or replace gun.
!
Disconnect power before maintaining.
Repair or
replace
cracked
weld
cable.
Check gas
hose and
fittings.
Clean
drive rolls.
!
Disconnect power before troubleshooting.
Remedy
Check gun
cable.
OM-252 045 Page 17