Jettech Metal Products F18, F18-DP User Manual

4.7 (7)

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)

 

 

 

 

 

Jettech Metal Products F18, F18-DP User Manual

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

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