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18 Inch Stainless Steel Tub Dishwasher 

The stainless steel tub 18 inch under counter and portable 
dishwasher offers a completely new wash system, door 
hinge and spring assembly, with the addition of a separate 
drain pump, and an all new water overflow system. This 
manual will describe how to service, diagnose, and repair 
or replace components on this unit. 

Timer 

An electrical mechanical timer controls all operations and 
functions on this unit. The user can select a number of 
different cycles depending on the needs of the load to 
be cleaned. This model also has the flexibility to offer a 
rinse only and a plate warmer setting along with up to a 
three hour delay wash setting. The timer controls all of the 
electrical operation of the dishwasher for any of the cycles 
selected. The sequence of the different cycles can be 
found in the cycle chart supplied with the product and a 
copy also found in this manual. 

To assist in determining problems with the timer, or 
timer operation, the use of the product wiring diagram 
and the cycle sequence chart will help in determining 
when contacts open or close for the different electrical 
components. 

Testing the timer

1.    Check power to the product at the junction box, 

then at the door switches mounted on the door 
latch assembly. 

2.    Set the timer to the Heavy Wash setting. Check for 

power from both door switches to the timer to make 
sure the timer disconnect block is locked in to the 
timer properly.  

3.    All of the following checks should be done with the 

power disconnected and using an ohm meter for 
safety.

4.    Use the wiring diagram and the sequence chart 

to check for proper opening and closing of the 
different contacts in the timer.

5.    After all needed checks have been completed, 

power can again be applied and the operation of 
the timer motor can be checked. The timer motor 
will start after the knob is moved from the off 
setting.  

6.     It is best to advance the timer with the door open. 

When the high temperature wash cycle is selected, the 
timer advances the cycle up to the main wash section of 
the wash cycle, then near the end of this section, or when 
the indicator on the timer knob is straight down and again 
just before the plate warmer location, the timer will pause, 
but the wash motor will continue to spray water.

During this pause the heater will increase the wash water 
temperature until a control thermostat located on the 
under side of the tub closes. This restarts the timer motor 
and the cycle continues. The length of time for this option 
can vary depending on incoming water temperature and 
the make up of the dish load.   

The no heat dry option disconnects power to the heater 
once the timer reaches the dry section of a wash cycle.  
This option only removes power to the heater in the dry 
cycle and does not affect any other heater operations.

The selector switch is a multi function push button type 
switch.  When a pad is pressed a red plastic flag will 
appear in the window above the pad to show it has been 
pressed. This flag is not a light but will show as red. The 
selection of these options can be made at any time up to 
the point in the cycle they will affect the operation of the 
cycle.  

This will reduce burning of the timer contacts.

7.    Return the timer to the Heavy Wash setting, close 

the door and allow the timer to advance.  Referring 
to the sequence chart will tell the length of time 
between advancements of the timer.  

If a timer contact fails to open or close as shown in the 
sequence chart, or a burnt contact is found, the timer will 
need to be replaced.

If the timer does not advance automatically according to 
the sequence chart, the timer will need to be replaced.

Selector Switch

The selector switch allows the user to change a cycle  by 
adding or subtracting options as they so desire. There is 
an option for a high temperature wash and /or a no heat 
dry. 

Содержание FMB330RGB0

Страница 1: ...5995498770 September 2007 2007 18 Inch Built In Dishwasher Service Manual ...

Страница 2: ...2 ...

Страница 3: ...s in the Mount Assembly 8 Heater 8 Tub and Door Attachments 8 Air Gap 8 Sump 9 Delivery Tube 9 Door Hinge and Door Springs 9 Door Seal 9 Tub Rollers 9 Vent 10 Table of contents Disassembly and Service 11 Outer Door Panel 11 Console 11 Timer 11 Door Latch 11 Selector Switch 11 Vent Housing and Vent Grate 12 Dispenser 12 Lower Spray Arm 12 Upper Rack 12 Center Spray Arm 12 Door Seal 12 Water Valve 1...

Страница 4: ...mer motor will start after the knob is moved from the off setting 6 It is best to advance the timer with the door open When the high temperature wash cycle is selected the timer advances the cycle up to the main wash section of the wash cycle then near the end of this section or when the indicator on the timer knob is straight down and again just before the plate warmer location the timer will pau...

Страница 5: ... switches 1 Disconnect power to the unit for safety 2 When checking a switch always remove one wire from the switch 3 Now check the switch for continuity with the latch closed then for no continuity with the switch open If door is open the door switches are open Actuator Door strike Latch in the closed position Actuator Cam Detergent and Rinse Aid Dispenser The detergent and rinse aid dispenser co...

Страница 6: ...and lock the cover Once the cycle reaches the main wash the timer applies power to the wax motor actuator The plunger of the wax motor extends pressing down on a pivot arm attached to the latch for the cover This releases the cover to dispense the detergent At the same time on the opposite end of this pivot arm a pin rides up in the actuating arm for the rinse aid dispenser it exits through a diff...

Страница 7: ...sembly then to an air chamber on the front of the sump As the water level in the tub rises air trapped in the sump air chamber applies pressure on the pressure switch which Lower Spray Arm The lower spray arm turns in a clockwise direction spraying up into the lower rack The arm is attached to the spray arm support with a locking ring To remove hold the arm and turn the lock clockwise When reinsta...

Страница 8: ...se the control thermostat After the thermostat closes the timer advances on to the next cycle The time needed for this to occur can vary depending on incoming water temperature and load Safety Thermostat The safety thermostat is a normally closed thermostat wired in series with the heater that will open if the temperature in the tub raises over 190 This thermostat only disconnects power to the hea...

Страница 9: ...ed out and raised to a higher hole location If the tension is too great it can be lowered To make spring adjustments the dishwasher will have to be pulled forward to access the pins hinge arm spring locator pin Door seal The door seal seals the area between the tub and the inner door panel to prevent water leaks The door seal around the tub is all one piece and presses into a channel formed around...

Страница 10: ... top of the tub passes out the vent This allows outside air to enter the tub from the right hand side through the air gap This air flow speeds the water evaporation which in turn forces more steam and moisture out the vent If the customer selects heated dry the added heat increases the steam pressure and allows for faster drying of the load There is a gasket around the vent housing and the vent ho...

Страница 11: ...e door latch until last Timer 1 Disconnect power to the dishwasher 2 Remove outer door panel 3 Remove knob from timer by pulling straight off timer shaft 4 Remove console 5 Press in on locks for the disconnect block and pull block from timer 6 Remove two timer mounting screws Ground wire has a locking terminal press down on lock to remove terminal Door Latch 1 Disconnect power to the dishwasher 2 ...

Страница 12: ...g down from top of rack until lock clicks There is a gasket inside the spray arm and locking in place will be tight make sure spray arm is fully locked to delivery tube Door Seal 1 To remove the door seal pull free from the channel around the tub 2 Locate the inside of new seal Go to the end of the seal one side will be shaved off This is the inside 3 Find center of seal Push center of seal into c...

Страница 13: ...Complete repairs in reverse order 1 Disconnect power to dishwasher 2 Remove as much water as possible from sump 3 Remove toe kick and outer door panel 4 Turn off water supply to dishwasher then place protection under water line that attaches to the water valve to catch water that will be in the line as supply line is removed from the water valve 5 Access repair per note above or remove unit from u...

Страница 14: ...nect power to dishwasher 2 Loosen dishwasher and pull forward to access door spring 3 Pull pin out of side frame to release top of spring 4 Remove outer door panel 5 Remove screws and nuts holding inner door panel to hinges close and latch inner door panel 6 Remove locking clip from both hinge pins and slide hinge assemble from product Mounting pin Frame 7 Reassemble in reverse order making sure l...

Страница 15: ...nals have locks press down on lock to remove terminal 9 Replace drain pump in reverse order Figure below shows all components of the dishwash er with the unit laying on it s back Wash motor and pump Assembly 1 Disconnect power to dishwasher 2 Remove as much water as possible from sump before starting this repair 3 Remove toe kick and outer door panel 4 Turn off water supply to dishwasher then plac...

Страница 16: ...there is protection for the floor before unit is laid down 8 Remove hoses from sump The hose from the pressure switch which is mounted to the air chamber of the sump is removed easier if it is pushed from the sump and not pulled off by the hose 9 Disconnect the disconnect for the thermostats 10 Carefully remove thermostat mount from sump 11 Install thermostats on new sump Make sure there is Therma...

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Страница 25: ...NOTE WHEN HI TEMP OPTIO Service Information ...

Страница 26: ...EN HI TEMP OPTION IS SELECTED THE TIMER WILL PAUSE UNTIL WASH TEMPERATURE IS REACHED ...

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