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Operation
1. Check that the spray pipes, curtains, and scrap screens are in place and clean.
2. Check that the overflow drains are closed.
3. Check the chemical supplies. Turn on the detergent dispenser switches.
4. Turn on the exhaust vent system (if applicable), and make sure it is operating.
5. Close the door(s). Push the power switch ON, light will illuminate.
Machine will begin to fill via the fill valve and the final rinse piping.
6. When the tanks are full, wait until the wash tank has reached the proper temperature.
Check the wash tank temperature gauges located on the control cabinet. Minimum wash
temperatures are:
• MD-44 160°F/71°C to 175°F/79°C
• MD-66 160-175°F/71-79°C
• Final Rinse for all models is a minimum of 180-195°F/82-91°C.
• Prewash for MD-66 model has no temperature rating.
7. Push the Green start button. The cycle light illuminates indicating the dishwasher
is ready for automatic operation.
8. Pre-scrap wares to remove large food particles and load wares into the dish racks.
DO NOT OVERLOAD RACKS.
9. Pegged racks are for plates and/or trays. Flat racks are for bowls and/or silverware.
Spread silverware evenly in a single layer in a flat rack or upright (loosely packed) in a
cutlery rack/cylinder.
10. Push a dish rack into the load-end of the dishwasher until it contacts the idle pump
switch lever, the conveyor and pumps will start.
11. The dishwasher will run for 90 seconds to wash, rinse and move the dish rack out
of the unload-end of the dishwasher.
12. Inserting another dish rack into the machine before the first rack exits will keep the
dishwasher running until the last dish rack exits the machine.
13. Check the final rinse pressure and temperature as the racks pass through the final
rinse. This final rinse pressure MUST be 20-22 psi [137.8-145 kPa] and the final rinse
temperature MUST be a minimum of 180-195°F/82-91°C .
14. The pumps and the conveyor drive will automatically stop after the last rack exits
the machine.
15. The machine may be stopped at any time during the cycle by pressing the red STOP
pushbutton. The green light or LED will go out.
16. Check the interior of the dishwasher for any dish racks still in the machine.
These dish racks must be washed again to ensure they are washed and sanitized
completely.
17. To restart, push the green START pushbutton and push another dish rack into the
dishwasher load-end until the pumps and conveyor start again.
18. Repeat steps 7-10 until all wares are washed.
Operation