BUG-O Systems CWP-18 - Manual (Page 39)

39
PREVENTIVE MAINTENANCE / CW-18 CIRCLE WELDER, CONT’D.
Refer to CWP-18 Electrical Component Chart. (Pg. 16)
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.
Rotation Control Item #12:
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 CBP-1550
Rotation Control electrical component chart for replacement parts or return for service.
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 re-
placed. Remove the brushes and sand them to ensure a smooth contact surface. Make sure all fasteners
are tight.
Small Brush Retainer Assembly Item #7:
Inspect black brush holders for cracks and replace if needed. Check and make sure all wires are sol-
dered 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 mounting screws of the
terminal strip.