How to Properly Clean Your Scotsman Ice Machine: Solutions for Unit Storage & Preventative Maintenance

Correctly sanitizing your Scotsman ice machine has a number of advantages, such as preventing future maintenance issues and ensuring your machine is able to be shut down for an extended period of time without issue. It can also help minimize the spread of COVID-19 when you increase the frequency of your cleanings (standard is six months).

When sanitizing your ice machine, you will need to create a cleaning solution using a sanitizer and warm water (the exact amount depends on the model you are cleaning and is stated in the steps below). The National Chemicals ice machine cleaner can be used on all makes and models of ice machines, and is safe to use on ice holding bins, cooling trays, water trough, curtain, distribution tubes, and more.

After following the steps below, don't forget to disinfect all areas on your ice machine that have human and ice contact, such as the bin door, gaskets, ice scoop, and ice scoop holder. This can be done using the cleaning solution as well.

If you are preparing your unit for a long period of disuse, you will follow these instructions exactly until the last step (or the second-to-last step if you have a Scotsman Meridian (HID) Ice and Water Dispenser), where it instructs you to turn the machine back on to resume ice production.

Sanitizing a Scotsman Prodigy Plus Modular Cuber

1. Open door on bottom left of front panel next to the indicator lights to access power buttons.
2. Press and hold the red off button until you can hear the machine shut down and the green status light goes out.
3. Melt or remove all ice from the storage bin.
4. Remove the two screws holding the front panel in place and remove the front panel.
5. Using the thumb screws, remove the evaporator cover.
6. Prepare 2 gallons of sanitizing solution.
7. Push and release the yellow clean button on the controller. The yellow clean light will blink and the display will show “C”. The machine will then go through a harvest cycle, drain the reservoir, and then begin to refill.
8. Wait until the display blinks (AD1) and then pour the sanitizing solution directly into the reservoir until it is full. The unit will then circulate the sanitizer, drain, and flush. This process will take 35 minutes and then the machine will turn off and the display will show “O”.
9. Use the sanitizing solution to thoroughly wash and rinse the following ice machine components: evaporator cover, water level sensor, ice thickness sensor, water distributor, curtain, and splash panel. Please refer to your user manual for disassembly instructions.
10. Reinstall all parts removed for additional sanitizing in step 9.
11. Reinstall the front panel.
12. Using the remainder of the sanitizing solution, thoroughly wash all interior surfaces of the ice storage bin.
13. Pour any excess sanitizing solution into the bin and allow it to drain.
14. Open the door to access the power buttons. Push and release the green off button to resume ice production.

Sanitizing a Scotsman Prodigy Plus Modular Nugget/Flaker

1. Open the door to access the power buttons
2. Press and hold the red off button until you hear the machine shut down and the green status light goes out.
3. Melt or remove all ice from the storage bin.
4. Remove the two screws holding the front panel in place and remove the front panel.
5. Using the lever or knob located on water reservoir, shut the water supply off.
6. Drain the water reservoir and evaporator by using the gray drain hose.
7. Remove the reservoir cover.
8. Prepare 3 gallons of sanitizing solution.
9. Pour the sanitizing solution directly into the water reservoir until full.
10. Using the lever or knob located on water reservoir, turn the water supply on.
11. Push and release the green on button.
12. Allow the machine to operate for 20 minutes.
13. Press and hold the red off button until you hear the machine shut down and the green status light goes out.
14. Use the sanitizing solution to thoroughly wash and rinse the following ice machine components: reservoir cover, upper and lower ice chute, chute cover, and bin level sensors. Please refer to your user manual for disassembly instructions.
15. Reinstall all parts removed for additional sanitizing in step 14.
16. Discard all of the ice made during the sanitizing process.
17. Using the remainder of the sanitizing solution, thoroughly wash all interior surfaces of the ice storage bin.
18. Pour any excess sanitizing solution into the bin and allow it to drain.
19. Reinstall the front panel.
20. Open the door to access the power buttons. Push and release the green off but ton to resume ice production.

Sanitizing a Scotsman Meridian (HID) Ice and Water Dispenser

1. Remove upper front panel and lower splash panel, disconnecting the wiring harnesses to the sensors to fully remove the lower splash panel.
2. Press and release the on/off button on the controller so the display shows “O”.
3. Use the lever or knob located on the water reservoir to shut the water supply off.
4. Drain the water from the ice making system by pulling the gray hose located at the drain basin. Once drained, return gray hose to drain basin plug.
5. Remove the reservoir cover.
6. Raise the reservoir to the upper position by loosening the thumbscrew, raising the reservoir, and then re-tightening the thumbscrew.
7. Vend all of the ice out of the ice dispenser and discard by pressing the Dispense Ice button on the controller.
8. Prepare 2 gallons of sanitizing solution.
9. Pour sanitizing solution directly into reservoir until reservoir is full.
10. Operate the machine for 10 minutes by pressing and releasing the on/off button. The display will show “F”. At this time the ice machine will begin making ice with the sanitizing solution. Keep the reservoir full while the machine is making ice by topping off the sanitizer when the water level in the reservoir drops.
11. After operating the machine for 10 minutes press and release the on/off button. The display will display “O”.
12. Vend all of the ice out of the ice dispenser and discard by pressing the Dispense Ice button on the controller.
13. Unplug the machine or disconnect electrical power.
14. Use the sanitizing solution to thoroughly wash and rinse the following ice machine components: reservoir cover, ice discharge chute cover, ice sweep, bin cover, ice outlet cover and thumb screws, agitator, rotor, and the ice and water discharge chutes. Please refer to your user manual for disassembly instructions.
15. Reinstall the parts removed for additional sanitizing in step 14.
16. Using the sanitizing solution, thoroughly wash and rinse all inside surfaces of the ice storage bin, ice discharge chute, metal area below the ice sweep, bin cover, sink, and drip tray.
17. Pour the remainder of the sanitizing solution through the bin drain and sink drain and then rinse with clean water.
18. Drain the water from the ice making system by pulling the gray hose located at the drain basin. Once drained, return gray hose to drain basin plug.
19. Lower the reservoir to its original position by loosening the thumbscrew, lowering the reservoir, and then re-tightening the thumbscrew.
20. Use the lever or knob located at water reservoir to turn the water supply back on. Allow the reservoir to fill. Once full, drain the reservoir by pulling the gray hose located at the drain basin. Once drained, return gray hose to drain basin plug. Repeat the process for a second rinse.
21. Reconnect electrical power.
22. Press and release the on/off button so the display shows “F” and ice making restarts.
23. Reinstall the upper front panel and lower splash panel.

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