a.
WASH LED on relay board turns
off.
2)
Dishwasher enters a dwell cycle.
Default is two seconds.
3)
Machine line voltage removed from
terminals DPS1 and DPS2.
D.
Rinse cycle begins.
1)
Control board energizes the fill/rinse
solenoid (1SOL) through the relay
board.
a.
FILL LED on relay board turns on.
2)
Control board energizes the rinse
feeder relay coil (1CR) through the
relay board. Relay 1CR N.O. contacts
4/2 and 8/6 operate (close).
3)
The RINSE icon and final rinse
temperature are displayed.
4)
Machine line voltage present at
terminals RPS1 and RPS2.
5)
Rinse cycle continues for the
programmed time. Default is 10
seconds.
E.
Rinse cycle completed.
1)
Control board enters seven second
sani-dwell. RINSE icon is displayed
until sani-dwell cycle is complete.
2)
Control board de-energizes the rinse
feeder 1CR through the relay board.
Relay 1CR de-energizes and 1CR
N.O. contacts 4/2 and 8/6 open.
3)
Control board de-energizes the fill/
rinse solenoid 1SOL through the relay
board. Rinsing stops.
a.
FILL LED on relay board turns off.
4)
Machine line voltage removed from
terminals RPS1 and RPS2.
5)
Tank temperature is displayed.
10. Tank Heat and Booster temperatures continue to
be monitored and maintained by the control
board through the relay board.
CONTROL and RELAY BOARD LEDs
CONTROL BOARD LEDs
CONTROL BOARD
DESCRIPTION
DOOR
On when door interlock 1LS is closed.
MICRO
Flashes at a rate of 1sec on, 1 sec off when machine is on.
WATER LEVEL
LOW - On when float switch 1FS is closed.
MID - Not used with SD3.
HIGH - Not used with SD3
RS485
Used with NAFEM Gateway.
RELAY BOARD LEDs
RELAY BOARD
DESCRIPTION
BOOSTER
On when triac Q3 (booster circuit) is gated on.
Booster heat on.
FILL
On when triac Q4 (fill circuit) is gated on. 1SOL on.
TANK HEAT AM
On when K9 is energized. Tank heat on.
EXT BSTR & VFC
On when machine is on.
WASH
On when K8 is energized. Pump motor on.
RINSE AID
On when triac Q2 (rinse feeder) is gated on. 1CR is energized.
SD3 Series - ELECTRICAL OPERATION
Page 21 of 37
F45576 (1015)
Summary of Contents for SD3 Series
Page 1: ...SD3 Series SD3 ML 130232 SERVICE and PARTS MANUAL F45576 1015 ...
Page 23: ...WIRING DIAGRAM 1 PHASE Fig 16 SD3 Series ELECTRICAL OPERATION Page 23 of 37 F45576 1015 ...
Page 24: ...WIRING DIAGRAM 3 PHASE Fig 17 SD3 Series ELECTRICAL OPERATION F45576 1015 Page 24 of 37 ...
Page 39: ...SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 2 2015 ...
Page 41: ...CONTROLS SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 4 ...
Page 43: ...CONTROL CABLES SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 6 ...
Page 45: ...CONTROL BOX SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 8 ...
Page 47: ...MOTOR AND PUMP SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 10 ...
Page 49: ...UPPER WASH ARM SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 12 ...
Page 51: ...LOWER WASH ARM SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 14 ...
Page 53: ...RINSE PIPING WITHOUT BOOSTER SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 16 ...
Page 55: ...RINSE PIPING WITH BOOSTER SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 18 ...
Page 57: ...BOOSTER PIPING SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 20 ...
Page 59: ...ELECTRIC BOOSTER TANK SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 22 ...
Page 63: ...DRAIN UNIT SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 26 ...
Page 67: ...DOOR ASSEMBLY SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 30 ...
Page 69: ...PANELS AND RACK SUPPORT SD3 DISHWASHER REPLACEMENT PARTS F 43302 Rev B October 2015 32 ...
Page 71: ...SD3 DISHWASHER REPLACEMENT PARTS FORM 43302 Rev B OCTOBER 2015 PRINTED IN U S A ...
