Jettech Metal Products F18, F18-DP User Manual
18
F
T chn l Man
e
& P
ica u
F18-D
al
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
20532
Terminal block
1 888 275 4538 - 611
F-18
514 737 9701 - 611
FAX 514 737 2792
Electrical component location - Top view
20570
Wash thermostat
20596
Rinse Thermostat
20104
Contactor relay
20067
Start relay
20567
Capacitor
20044
Power
switch
(F-18)
20010
Lens
20042
Light
20548
Door
switch
20108
Thermometer
Front of dishwasher
20519
Start cycle
switch
20058
Pressostat
20518
Timer
20010
Lens
20042
Light
3
POWER SWITCH
1 888 275 4538 - 611
514 737 9701 - 611
FAX 514 737 2792
Power Button
Dark Blue
Brown wire
TL- Power Switch
PS- Pressure Switch
SW2- Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TC- Start Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
20500
F-18 DP
Light Blue wire
Gray wire
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
Drain Pump By-pass switch
Brown wire
Pink Wire
Red wire
Power Switch Location
4
PRESSOSTAT 20058
1 888 275 4538 - 611
514 737 9701 - 611
FAX 514 737 2792
TL- Power Switch
PS- Pressure Switch
SW2- Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TC- Start Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
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
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.
1 888 275 4538 - 611
514 737 9701 - 611
To water solenoid valve
(red wire)
Adjustment (min-max)
Adjustment water level
Clock-wise for higher level
To heaters and timer
(white 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,
continuous work.
7
THERMOSTAT 20596
Green paint
1 888 275 4538 - 611
514 737 9701 - 611
FAX 514 737 2792
TL- Power Switch
PS- Pressure Switch
SW2- Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TC- Start Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
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
190F +/- 2190F +/- 2
From pressostat (white)
1
G
8
2
1
C
Nc
3
No
3
To Wash thermostat
(blue)
2
To contactor
(red)
THERMOSTAT 20570
Orange paint
1 888 275 4538 - 611
514 737 9701 - 611
FAX 514 737 2792
TL- Power Switch
PS- Pressure Switch
SW2- Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TC- Start Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
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
160F +/- 2160F +/- 2
2
From rinse thermostat (blue)
1
3
2
G
9
1
C
Nc
3
No
To ready light
(small black)
To wash heater element
(Large black)
CONTACTOR RELAY 20104
1 888 275 4538 - 611
514 737 9701 - 611
FAX 514 737 2792
TL- Power Switch
PS- Pressure Switch
SW2- Drain Switch
CR1 + CR2 - Micro Relay Switches
M1 + M2 + M3: Timer Cam Switches
TC- Start Switch
MP - Door Switch
TB - Thermostat
TV - Thermostat
CCB - Booster Contactor Contacts
ELB - Solenoid Coil
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
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