Voltage is variable on both the hot and neutral sides due to action of the
speed control pc circuit.
b. Timer Circuit. (Use the same reference as with the armature circuit.)
(1) The 120v is on the black wire to fuse F-1 and from F-1 to S-1. The lid is
closed, closing the lid interlock switch. From S-1, through the white/tan wire, to J2-5, pc
board to J3-7, red wire, to S3-1. Select time on the timer, closing S3-1 and S3-3 points.
120vac will be on the black wire at the timer motor.
Change reference to F-1 (120vac, hot side).
(2) The common line is white wire to S-1. Close S-1 and 120vac will be on
the red wire to S-4 and the black wire to J2-11, pc board, J3-1, jumped to J3-2, using a
white/black wire. From J3-2 through the pc board, run to J3-5 and the white wire to the
other side of the timer motor.
c. Brake Circuit.
Reference lead at neutral (common lead).
Do not hold S-2 closed after armature comes to a complete stop as the
armature will begin to accelerate in reverse.
(1) The path for voltage/current flow will be the black wire to the fuse, to
S-1, the white and tan wire to J2-5, J2-4, through R-18, to J2-2, to J5-3. From J5-3,
yellow wire, to S-2, brown wire, to J5-2, to J1-5, and yellow wire to the brush and to the
Reference at F-1 (120vac, hot side).
(2) The neutral side is as follows: white wire to S-1, and red wire to the lid
interlock, black wire, to J2-11, to J3-1. The white/black wire to J3-2, to J1-2, and the
white wire to the field windings. From the field winding, the black wire to Jl-3, J5-6, and
purple wire to S-2. Red wire at S-2 to J5-8, J1-6, and the brown wire to the brush and
to the motor.
d. Tachometer Circuit. The outputs from the pc board tachometer, tachometer
pick-up pc board, and lid solenoid are as follows:
Tachometer-J3-15 to J3-13, 0-57 millivolts direct current (vdc).
(2) Tachometer pc Board-Reference at J4-6. Test at J4-2 +1.2 vdc.
Reference at J4-6. Test at J4-4 +0.6mvdc or -mvdc.