Electrical Path Circuit Schematics
Timer Sequence Chart
The timer sequence charts are used in conjuction with the wiring diagrams to trace the circuitry during the
time cycle. The timer contacts and the operation or component that each contact controls are listed down
the left side of the chart. The phases of the complete cycle are shown across the bottom of the chart. The
timer switch increments are numbered across the top of the chart. The solid horizontal bars in the chart
denote when the various contacts are closed during the cycle.
To use the timer sequence chart to trace the circuitry:
1. Locate the particular part of the cycle on the sequence chart.
2. Determine which timer contacts are closed during that particular step of the cycle by noting the solid
vertical bars in that step across the chart.
3. Draw in the gap of the respective contacts on the wiring diagram with a soft dark pencil, to illustrate
the contacts are being closed.
4. Similarly, determine which switch contacts are closed, by the switch chart, and illustrate them as closed
on the wiring schematic.
5. The circuitry during the particular step of the cycle may then be easily traced on the wiring diagram,
since all contacts and switches are then properly illustrated as being open or closed.
Start Circuit
Power travels into the control trough on L1 &L2. 240VAC goes to a Control Transformer that steps the volt-
age down to 120VAC for the controls. 120VAC then travels thru the 1.5 amp Circuit Breaker and travels on
the white/red wire to the Coin Accumulator Transformer where it is stepped down to 12VAC. This 12VAC
powers the Coin Accumulator Board via the gray wire. With the board now powered up, the insert coins
light will be illuminated and it’s ready to count coins.
120VAC is also supplied to the Main Timer Start and On-Off Contacts on the white/red wire. The Start
Contact is closed before the machine has been started so 120VAC travels through the Start Contact and is
sup plied to the Coin Accumulator Board Start Relay. The S4 Coin Switch counts the quarters and sends a
signal to the Coin Accumulator Board. When the coin count is satisfied, the Coin Accumulator Board closes
the Start Relay and sends a short 120VAC signal on the orange/white wire to the Rapid Advance Timer
Motor. This timer motor starts advancing the Main Timer to the preselected starting position. A few sec-
onds after the Coin Accumulator Board sends the start signal to the Rapid Advance Timer Motor, the Coin
Accumulator Start Relay opens, the display goes blank and the On-Off Contact in the Main Timer closes to
ensure that the S1 Door Switch is closed (showing that the door is locked). The On-Off Contact also pro
vides 120VAC to the On Light on the red wire. With the S1 Switch closed the Door Lock Solenoid is now
powered with 120VAC via the white/red wire. The Door Lock Solenoid pulls in, locking the door and closing
the S2 and S3 Switches. The S2 Switch is a backup to the S1 Switch so that the adjustment on S1 isn’t as
critical. The S3 Switch provides 120VAC to Timer Contact RA-3 to power the Rapid Advance Motor again
and the Main Timer is allowed to advance on to the preselected start position. The blue wire furnishes the
neutral for the controls.
Fill Circuit-Warm
120VAC is supplied to the controls through the S1, S2, and S3 Door Switches. The On Light and the Door
Lock Solenoid (discussed in Start Circuit) will remain on throughout the cycle. The Lock Thermoactuator
Contact in the Main Timer is closed and provides the neutral side to operate the Thermoactuator. 120VAC
is provided.to the Lock Thermoactuator on the orange wire from the S3 Door.Switch. The Drain Contact in
the Main Timer is closed and pro vides 120VAC to the Drain Valve on the brown/yellow wire which closes
the valve. The Wash Contact in the Main Timer is closed and provides 120VAC to the Reversing Timer and
the Reversing Timer Motor on the blue/black wire. This will start the Reversing Timer operating which will
alternately open and close the Micro Switches that provide the direction of tumble for the wash basket.
The Wash Light Contact in the Main Timer is closed and provides 120VAC to the Wash Light. The orange
wire coming from the S3 Door Switch provides power to the Wash Water Contact in the Main Timer.
120VAC connects. from the Wash Water Contact to the Wash Temperature Contact via an internal timer
connection. With 120VAC on the orange wire & neutral on the orange/yellow wire, the Coin Accumulator
Board turns on the Time Remaining Light & starts counting down in minutes. (If delay fill kit is installed,
time count down is stopped during fill.)
27
Part # 8533-031-001 6/22
26
Part # 8533-031-001 6/22
Section 3:
Electrical
Wiring Diagrams &
Schematics
Machine
Mounting
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring
Parts
Data
Coin
Handling
Maintenance
