Scotsman Ice Machine UF424 UN324: Maintenance and Cleaning

There are 4 areas of maintenance

• Ice making system

• Photo eye ice level control system

• Bin

• Air cooled condenser and filters

Ice making System: Remove Scale

• Remove front panel.

• Turn the machine off by pressing the on / off button.

• Empty the ice from the storage bin

• Remove the inner panel using the 4 thumb screws.

• Remove the top cover from the reservoir.

• Shut water supply off at the reservoir by turning the knob counterclockwise.

• Locate the evaporator drain in the ice machine compartment. Unplug it and drain the evaporator.

• Replug the drain.

• Mix a solution of 1.5qt/1.4L of warm water (900 F/320 C to 1100 F/430 C) and 4 ounces of Scotsman Clear 1 Ice Machine Scale Remover.

• Pour the cleaning solution into the reservoir until it is full (a squirt bottle may be necessary to fill reservoir with cleaning solution).

• Push the clean button. the machine will operate the auger motor for approximately 20 minutes. Then it will start making ice with the cleaning solution.

• Add remaining cleaning solution to the reservoir as ice is being made for the next 20 minutes. After the full 40 minutes (steps 11 & 12) the unit turn off.

• Drain the solution from the reservoir by removing the plug. Once drained, replace the plug.

• Pour clean water into the bin to melt any ice produced during the cleaning cycle.

• Mix a solution of 4oz/118ml of Scotsman Clear 1 ice machine scale remover and 16oz/473ml of potable water. Use this scale remover solution for the water reservoir cover, ice discharge chutes, the storage bin and the inner front cover.

Sanitize Water System

• Create a solution of sanitizer. Mix 4oz/118ml of NuCalgon IMS III and 2.5gal/9.5L of (900 F/320 C to 1100 F/430 C ) potable water to create a 200 ppm solution.

• Pour the sanitizing solution into the reservoir until it is full and wait 2 minutes.

• Turn on the water supply and press the ON /Off button to turn the ice machine on

• Operate the machine for at least 15 minutes.

• Drain the solution from the system by pulling the reservoir plug from the drain hose. Return plug when drained.

Photo Eye ice level control

• Mix solution of 4 ounces of Clear 1 Ice Machine Scale Remover and 1.5qt/1.4L of 900 F/320 C to 1100 F/430 C water.

• Remove sensors from inner cover by removing the white c-clip .

• Use cotton swab and cleaning solution to thoroughly clean photo sensors.

• Rinse sensors with clean water.

• Reinstall sensors in inner panel.

Bin

• Use the same cleaning mixture to thoroughly clean bin surfaces.

• Rinse with clean water.

• Use sanitizer mix on all bin surface areas and areas that may contact the ice.

Clean the air filter regularly.

• Remove the filter by sliding it to the right until it is clear of the ice machine.

• Remove dust and dirt by washing the filter in a utility sink.

• Reinstall filter in the ice machine.

The condenser fins require semi annual cleaning. Use caution to prevent damage to the condenser fins.

• Lightly brush dust from the condenser.

• Use a vacuum to thoroughly clean the condenser.