Hoshizaki Ice Machine DCM-751BAH(-OS) DCM-751BWH(-OS): Cleaning and Sanitizing Checklist

Cleaning Prep:

• 1. Close the water supply line shut-off valve and dispense all the ice from the storage bin.

• 2. Move the control switch to OFF, pause momentarily, then move the control switch to DRAIN*. Allow the icemaker to drain for 5 minutes. A momentary pause is necessary to de-energize the control board, otherwise there is a delay of several minutes before the drain valve will open. *If left on DRAIN for 10 minutes or more a 2-beep alarm will sound every 5 seconds. Move the switch out of DRAIN to clear the alarm.

• 3. Move the control switch to OFF. Remove the Front Panel and Top Panel. Move the power switch to OFF.

• 4. Dilute Hoshizaki Scale Away with warm water (see Table below). Remove the Storage Bin Cover**, Spout B, then Spout A. Pour cleaning solution into the Extruding Head until the Evaporator Assembly and the Reservoir are full and the solution overflows into the Drain Pan. Replace Spout A & B, and the Storage Bin Cover. Allow the icemaker to soak for 10 minutes. **Use a 15mm socket to easily remove thumb screws.

• 5. In bad water conditions, a more thorough soaking may be required. Follow Step 4, then place a clamp on the Reservoir hose that will block the flow to the evaporator assembly. Pour additional cleaning solution over the Extruding Head until the Evaporator Assembly is full. Allow to soak. Otherwise, continue to Step 6.

• 6. Move the power switch to ON. Replace the Top Panel and Front Panel†. Move the control switch to ICE. Make ice using the cleaning solution until it stops † Be sure to keep the microswitch mounted on the Bin Top dry.

• 7. Move the control switch to OFF, pause momentarily, then move the control switch to DRAIN. Allow the icemaker to drain for 5 minutes.

• 8. Move the control switch to OFF, pause momentarily, then move the control switch to ICE. Open the water supply line shut-off valve to supply water to the icemaker.

• 9. After the gear motor starts, move the control switch to OFF, pause momentarily, then move the control switch to DRAIN. Allow the icemaker to drain for 5 minutes.

• 10. Move the control switch to OFF. Move the power switch to OFF

• 11. Close the icemaker water supply line shut-off valve.

Step 12: Sanitizing

• Dilute 5.25% chlorine bleach‡ with warm water (see Table above) ‡ Use bleach without additives.

Step 13: Sanitizing

• Remove the storage bin cover, spout B, then spout A

• Pour the sanitizing solution over the extruding head until solution starts to overflow into the drain pan

Step 14: Sanitizing

• Clean, rinse, and replace spout A, spout B, and the storage bin cover

• Allow the icemaker to soak for 10 minutes

Step 15: Sanitizing

• Move power switch to ON, replace the panels

Step 16: Sanitizing

• Move the control switch to ICE

• Make ice with the solution until it stops, dispose of ice

Step 17: Sanitizing

• Move the control switch to OFF, pause momentarily, then move it to DRAIN

• Allow the icemaker to drain for 5 minutes

Step 18: Sanitizing

• Move the control switch to OFF, pause momentarily, then move it to ICE

• Open the icemaker water supply line shut-off valve

Step 19: Sanitizing

• After the gear motor starts, move control switch to OFF, pause momentarily, then move it to DRAIN

• Allow the icemaker to drain for 5 minutes

Step 20: Sanitizing

• Move control switch to ICE

• Allow the icemaker to run for 30 minutes, then clean and sanitize the dispensing components – Step 21

Step 21: Clean Dispenser Components

• Dilute Hoshizaki Scale Away with warm water (see Table). Move the control switch to OFF.

Step 22: Sanitize Dispenser Components

• Remove the Front Panel and Top Panel, move the power switch to OFF.

Step 23: Clean Dispenser Components

• Remove the Storage Bin Cover**, Bin Control Assembly (snap pin, shaft, and actuator), Spout B, Spout A, Spout Gaskets, Spout Cover, Ice Dispensing Spout**, and then the Water Dispensing Nozzle. Place in bin with cleaning solution.

Step 24: Clean Dispenser Components

• Remove Motor Bracket Thumbscrews** first from the vertical plane and then from horizontal plane. One hand should hold the agitator or dispensing auger, while the other hand pulls the corresponding Agitating Motor or Dispensing Motor out the front of the icemaker. Now remove the Agitator and Dispensing Auger from the ice storage bin and place them in the bin with cleaning solution.

Step 25: Clean Dispenser Components

• Soak the parts removed in Steps 23 – 24 (except the motors) in cleaning solution for 15 minutes.

Step 26: Clean Dispenser Components

• Wipe the exterior of optical-sensors or push buttons with the cleaning solution and then a clean damp cloth. Wipe the ice shutter (located above the ice dispensing spout) thoroughly with a clean cloth.

Step 27: Sanitize Dispenser Components

• Dilute 5.25% chlorine bleach with warm water and place it in another bin (see Table below)

Step 28: Sanitize Dispenser Components

• Soak the parts removed in Steps 23–24 (except the motors) in sanitizing solution for 15 minutes. Rinse all the parts thoroughly with clean water

Step 29: Sanitize Dispenser Components

• Reassemble and replace all parts removed in Steps 23-24 (except storage bin cover)

Step 30: Sanitize Dispenser Components

• Pour warm water into the storage bin to melt any remaining ice

• Clean the storage bin liner and cover with dish soap and a damp cloth. Rinse thoroughly with clean water

• Replace the storage bin cover

Step 31: Sanitize Dispenser Components

• Move the power switch to ON, then replace top and front panels

Step 32: Sanitize Dispenser Components

• Move control switch to ICE, to start the automatic icemaking process

Step 33: Sanitize Dispenser Components

• Set dispense mode switch to preference (portion or continuous)