Service manual

MACHINE OPERATION

After the machine is operational and the tables are cleared, remove all packing material (heater supports)

then wash out the tanks, give attention to any installation debris left over. Now, ﬁ ll the machine by

turning on the master switch. The Conveyor will automatically ﬁ ll with water to an operational level.

IMPORTANT: Adjustment of the water diverter plate is required to ﬁ ll the tanks in proper sequence. It is

found inside the hood on the back wall at the top. Slotted holes allow movement side to side.

The rule: make sure the rinse tank always ﬁ lls last by adjusting the stream ﬁ lling the rinse tank to

approximately the size of a pencil. After the pump motors start, the machine will ﬁ ll once more to

compensate for the water used by the pumps. This is normal operation.

Place a rack at the opening of the soil side of the machine and push it in until it catches on the ﬁ rst dog. The

machine will take the rack through, operate the pumps, conveyor, heaters, ﬁ nal rinse and then exit the rack

and shut down until another rack is put into the machine.

WHAT TURNS THE MACHINE ON AND OFF

The conveyor motor, wash motor and rinse motor are all sequenced by the actual dish rack. There is no

timer or control unit that causes the machine to run. Everything is keyed off the dish rack. The sequence

bars located in the front tray track are used to tell the machine what to do. The reed switches are

normally closed (they always TURN ON THE MOTORS), when a magnet comes within ½” of the reed, it will

turn OFF. When the magnet swings away from the switch, the motor turns on. NOTE: an easy way to test

the reed switch is by placing a strong hand held magnet (automotive tool) next to the reed, if it turns off that

means the switch is good and the problem is alignment with the machine’s bar magnet.

The heaters are controlled by the thermostats and the level control switches. If there is no water in the

tanks when the machine is turned on, the level control switches will turn off the heaters and open the ﬁ ll so-

lenoid. When the tanks are full the switches will shut off the water and then turn on the heaters. If the

incoming water is hotter than the settings on the thermostats, the thermostats will shut the heaters down

until the water temperature drops below the set point. NOTE: To increase the temperature, turn the

thermostat center rod counter clock-wise. (turn left to increase temp)

The dish rack acts as 1/2 of the conveyor mechanism. The center dogs pull against the ladders of each

rack. If the rack or its ladder is damaged the conveyor system will work less effectively. Damaged or

broken racks should be replaced. They cause problems such as racks staying in the machine or riding back

a forth on the conveyor bar. Both of these problems will cause excessive water, chemicals, and energy use.

The rack is 1/2 of the conveyor system.

A test to see if the machine’s tray track and tables are set up right is to place a rack on the soil table then

push it through the machine and on to the clean table. It should slide easily across all points. If the rack

should stick between the two tray tracks, they will need to be moved wider apart. The track is attached at

three points, adjust all three to maintain alignment. (Never adjust the front tray track; always make the

adjustment to the rear tray track)

CAUTION:

Disconnect power to the machine before servicing and tag-out power.

Beware of moving gear and drive arm on conveyor.

Heaters will remain hot immediately after emptying of machine.

Turn machine off before opening for inspection.