F18 & F18-DP
Technical Manual
May 2004 Rm
INDEX
PAGE 3 OVER VIEW OF TOP CONTROL PANEL PAGE 4 DOOR SWITCH 20548
PAGE 5 POWER SWITCH 20044, 20500 PAGE 6 PRESSOSTAT 20058
PAGE 7 WATER LEVEL SYSTEM PAGE 8 SOLENOID VALVE 20569 PAGE 9 THERMOSTAT, RINSE 20596 PAGE 10 THERMOSTAT, WASH 20570 PAGE 11 CONTACTOR RELAY 20104 PAGE 12 START SWITCH 20519 PAGE 13 START RELAY 20067
PAGE 14 TIMER 20518
PAGE 15 TIMER SEQUENCE
PAGE 16 ELECTRICAL DIAGRAM
PAGE 17 OVERVIEW OF THE BASE
PAGE 18 WASH SYSTEM/PLUMBING
PAGE 19 WASH SYSTEM (cont.)
PAGE 20 WASH PUMP 20240
PAGE 21 DRAIN PUMP 40229
PAGE 22 HEATER ELEMENTS 20080, 20088 PAGE 23 FILL CYCLE AND HEAT CYCLE PAGE 24 HEAT CYCLE (cont.)
PAGE 25 WASH CYCLE
PAGE 26 WASH CYCLE (cont.)
PAGE 27 DRAIN CYCLE
PAGE 28-31 CHEMICAL PUMP ADJUSTMENT PAGE 32 ELECTRICAL SCHEMATIC
2
F-18 |
1 888 275 4538 - 611 |
514 737 9701 - 611 |
|
FAX 514 737 2792 |
Electrical component location - Top view
20532 Terminal block
20567 Capacitor
20044
Power
switch
(F-18)
|
|
|
|
20570 |
|
|
|
|
Wash thermostat |
|
|
|
|
20596 |
|
|
|
|
Rinse Thermostat |
|
|
|
|
20104 |
|
|
|
|
Contactor relay |
|
|
|
|
20067 |
|
|
|
|
Start relay |
|
|
|
|
20058 |
|
|
|
|
Pressostat |
|
|
|
|
20518 |
|
|
|
|
Timer |
20010 |
20548 |
20108 |
20519 |
20010 |
Lens |
||||
Lens |
Door |
Thermometer |
Start cycle |
20042 |
20042 |
switch |
|
switch |
Light |
Light |
|
|
|
|
Front of dishwasher
3
POWER SWITCH
|
TLPower Switch |
|
PSPressure Switch |
|
SW2Drain Switch |
|
CR1 + CR2 - Micro Relay Switches |
|
M1 + M2 + M3: Timer Cam Switches |
|
TCStart Switch |
|
MP - Door Switch |
|
TB - Thermostat |
|
TV - Thermostat |
|
CCB - Booster Contactor Contacts |
|
ELB - Solenoid Coil |
Power Button |
20500 |
F-18 DP |
|
Dark Blue |
|
|
Light Blue wire |
Brown wire |
|
|
Gray wire |
Drain Pump By-pass switch
Brown wire
Pink Wire
Red wire
1 888 275 4538 - 611
514 737 9701 - 611 FAX 514 737 2792
PD - Soap Pump
BR - Micro Relay coil
BCB - Booster Contactor coil
RV - Wash Tank Heater Element
RB - Booster Tank Heater Element
DP - Drain Pump
MT - Timer Motor
MPL - Wash Pump Motor
LL - Indicator Light - Power
LC - Indicator Light - Wash Cycle
LP - Indicator Light - Temperature Ready CA - Capacitor - wash pump
20044
F-18
Power Switch Location
4
PRESSOSTAT 20058
TLPower Switch
PSPressure Switch
SW2Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TCStart Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
1 888 275 4538 - 611
514 737 9701 - 611 FAX 514 737 2792
PD - Soap Pump
BR - Micro Relay coil
BCB - Booster Contactor coil
RV - Wash Tank Heater Element
RB - Booster Tank Heater Element
DP - Drain Pump
MT - Timer Motor
MPL - Wash Pump Motor
LL - Indicator Light - Power
LC - Indicator Light - Wash Cycle
LP - Indicator Light - Temperature Ready CA - Capacitor - wash pump
Back of dishwasher
Pressostat Location
5
Water Level System
1 888 275 4538 - 611
514 737 9701 - 611
The dishwasher water level is control by a pressure switch or pressostat. A cup (grey plastic cylinder, #10528) located at the back of the unit will keep an air pocket which will be pressurized as the water level increases. The air pressure (approximately 2 inch water column) activates a switch through a rubber tube that connects from the air trap to the pressostat.
During the fill cycle, the water solenoid gets its signal from the pressostat. When the pressostat is satisfied, it cuts the signal to the solenoid valve and sends power to the thermostats and the timer
When trouble shooting this system, all components must be considered.
Beginning with the pressostat which is adjustable.
Making sure the connection to the tube is air tight.
The tube may have an invisible crack which allows air to escape. The air trap may be broken or the threads may have a crack also.
Adjustment (min-max)
Adjustment water level
Clock-wise for higher level
To water solenoid valve |
To heaters and timer |
|
(white wire) |
||
(red wire) |
||
|
||
|
from power switch |
|
|
(grey wire) |
6
Fill System & Rinse System
The dishwasher fill and rinse systems is practically the same system as they both used the same circuit. The only difference is what is sending the signal to the water solenoid valve.
During the fill cycle, the water solenoid gets its signal from the pressostat. When the pressostat is satisfied, it cuts the signal to the solenoid valve and sends power to the thermostats and the timer.
During the Rinse cycle, the water solenoid valve is getting its signal from the timer. When the time has completed the rinse cycle than the solenoid is de-energized.
Because the detergent pump and the drain pump (if so equipped) are connected in parallel with the water solenoid valve, they will all work at the same time. Why are they connected this way? Simple, the detergent pump is connected this to inject detergent whenever new water comes into the dishwasher. The detergent does not mix with the rinse system so it does not contaminate the rinsing process with detergent.
The drain pump will work whenever the water solenoid opens and this is to avoid overflow problem should the pressostat becomes defective and the unit get stuck in a fill cycle. Here it si important to keep in mind that this scenario will only work if the dynamic (flow) water pressure does not
exceed 25 PSI and the unit is capable of totally draining within 1 minute. If any of those two factors exceeds the limits then you can have an overflow situation.
The water solenoid valve will send water through the booster first and then water will travel to the spray-arms as shown in the diagram below. The solenoid valve will fail under specific condition. High pressure(>2.0 bar: >30 PSI) , high temperature(>60C:>140F), debris in water,
7
THERMOSTAT 20596
Green paint
TLPower Switch
PSPressure Switch
SW2Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TCStart Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
1 888 275 4538 - 611
514 737 9701 - 611 FAX 514 737 2792
PD - Soap Pump
BR - Micro Relay coil
BCB - Booster Contactor coil RV - Wash Tank Heater Element
RB - Booster Tank Heater Element
DP - Drain Pump
MT - Timer Motor
MPL - Wash Pump Motor
LL - Indicator Light - Power
LC - Indicator Light - Wash Cycle
LP - Indicator Light - Temperature Ready CA - Capacitor - wash pump
190F190F +/+/-- 22
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
1 |
|
|
|
Nc |
||
|
|
||||||
From pressostat (white) |
C |
3 |
|
||||
|
|
|
No |
||||
3 |
To Wash thermostat |
||||||
1 |
(blue) |
|
|
|
|
|
|
2 |
|
|
|
|
|
||
|
|
|
|
|
|
|
|
G |
To contactor |
||||||
(red) |
|
|
|
|
|
8
THERMOSTAT 20570
Orange paint
TLPower Switch
PSPressure Switch
SW2Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TCStart Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
1 888 275 4538 - 611
514 737 9701 - 611 FAX 514 737 2792
PD - Soap Pump
BR - Micro Relay coil
BCB - Booster Contactor coil RV - Wash Tank Heater Element
RB - Booster Tank Heater Element
DP - Drain Pump
MT - Timer Motor
MPL - Wash Pump Motor
LL - Indicator Light - Power
LC - Indicator Light - Wash Cycle
LP - Indicator Light - Temperature Ready CA - Capacitor - wash pump
160F160F +/+/-- 22
|
|
|
|
|
2 |
|
||
|
|
|
|
|
|
|||
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
||
|
1 |
|
|
Nc |
||||
|
|
|||||||
|
C |
3 |
|
|||||
|
|
No |
||||||
|
|
|
|
|||||
From rinse thermostat (blue) |
|
|
|
|
|
|||
3 |
To ready light |
|||||||
1 |
(small black) |
|||||||
2 |
||||||||
|
|
|
|
|
|
|
||
G |
To wash heater element |
|||||||
9 |
||||||||
(Large black) |
|
|
|
|
|
CONTACTOR RELAY 20104
TLPower Switch
PSPressure Switch
SW2Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TCStart Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
1 888 275 4538 - 611
514 737 9701 - 611 FAX 514 737 2792
PD - Soap Pump
BR - Micro Relay coil
BCB - Booster Contactor coil RV - Wash Tank Heater Element
RB - Booster Tank Heater Element
DP - Drain Pump
MT - Timer Motor
MPL - Wash Pump Motor
LL - Indicator Light - Power
LC - Indicator Light - Wash Cycle
LP - Indicator Light - Temperature Ready CA - Capacitor - wash pump
10