WHITE FIELD WINDING BLACK
WlDE BLADE WIRE
NUT
ii [ lllllll[BW ' _BLACK
POWER CORD
BRUSH #1
BRUSH #2
"==e3
SPDT SWITCH
BLACK
Circuit Diagram
Trouble Shooting of brake by qualified ser-
vice person only.
I. Check commutation at no load. If there is a heavy
sparking which follows the curvature of the commu-
tator: replace the armature
2 To continue trouble shooting, now unplug the power
cord
3. Install new brushes,especially if delayed come-in of
brake has been noticed before failure.
4 Check brake circuit for continuity: remove motor cap
and brushes, Use ohmmeter to check continuity from
brush terminal to brush terminal If open, locate
exact place using ohmmeter. As indicated by test,
tighten connection or replace field assembly or
replace switch
5. After repair, check direction of blade rotation vs
guard arrow.
25