Instruction manual

38
PREVENTIVE MAINTENANCE / CW-18 CIRCLE WELDER, CONT’D.
Refer to CW-18 Electrical Component Chart. (Pg. 14)
NA-3 Wire Feeder Assembly Item #1:
Check brushes for wear. Brushes should be replaced when their length is less than 1/4 inch.
Replace strain relief on wire if pulled out of motor housing.
Brush Holder & Support Item #4:
Inspect brush holder. Make sure constant tension is being applied on the brushes. Brushes
should move freely within the brush holder. Check brushes for arc build-up. If brushes are pitted
they will need replaced. Remove the brushes and sand them to ensure a smooth contact sur-
face. Make sure all fasteners are tight.
NA-3 Wire Feed Control Item #6:
Open control box, use an air hose to blow out dust and dirt. Check all wires for breaks and
replace if necessary. Check all electrical connectors and plugs. If an electrical component fails
refer to NA-3 Wire Feeder Control electrical component chart for replacement parts or return for
service.
Small Brush Retainer Assembly Item #7:
Inspect black brush holders for cracks and replace if needed. Check and make sure all wires
are soldered properly to the holders. Replace the brushes when their length is less than 1/2 inch
long. Remove the brushes and sand them to ensure a smooth contact surface. Make sure all
fasteners are tight.
Terminal Block Item #8:
Inspect the plastic terminal strip and make sure it is not cracked, replace if necessary. Make
sure all terminal connections are tight. Make sure all ground wires are connected to the mount-
ing screws of the terminal strip.
M-14 Rotation Control Item #12:
Open control box use an air hose to blow out dust and dirt. Check all wires for breaks and re-
place if necessary. Check all electrical connectors and plugs. If an electrical component fails
refer to CWO-6210-CW18 Rotation Control electrical component chart for replacement parts or
return for service.
EVERY TWELVE MONTHS:
Refer to CW-18 Exploded View Parts List. (Pg. 12)
Transmission 5:1 Assembly Item #18:
Inspect for excessive wear and tear. Keep the transmission assembly clean and lubricate with
Lubriplate #630-AA.
P.M. Motor Assembly Item #21:
Bodine gear motor lubrication. Fill gear motor to oil level indicator with worm gear oil conforming
to AGMA#5EP compounded (SAE#90) oil or Bodine lubricant (#L-23). Do not overll.
2” Bearing With Fasteners Item #22:
Do not grease the bearing, it is greased for life by the manufacturer. If the grease tting has not
been removed and plugged we suggest that you do so now. Earlier models may not have been
plugged at time of assembly.
NA-3 Wire Feeder Assembly Item #36:
Apply graphite grease to the gear teeth. Inspect the drive roll portion of the assembly, clean
as necessary. Do not use solvents on the idle roll because it may wash the lubricant out of the
bearings. Do not apply grease to the drive rolls.