Clean your Scotsman ice maker every six months to prevent scale buildup, mold, and cloudy ice

A Scotsman ice maker needs cleaning twice a year — more often if you have hard water. Scale (mineral deposits) builds up inside the machine and slows ice production, while bacteria and mold can grow in the water lines and storage bin. The cleaning process takes about two hours and uses a commercial ice machine cleaner, which you can buy online or from restaurant supply stores.

You do not need to call a technician for routine cleaning, though you should if the machine stops making ice after you clean it or if water leaks during the process. The machine does most of the work itself — once you add cleaner to the water line, an automatic cycle dissolves the buildup inside.

Key Takeaways

  • Scotsman ice makers should be cleaned every six months, or more often if your water is hard or the ice looks cloudy.
  • You will need a commercial ice machine cleaner (not vinegar or household cleaners), a bucket, and about two hours of time.
  • The cleaning cycle runs automatically once you add cleaner to the water line — you do not manually scrub internal parts.
  • After the cleaning cycle finishes, you must run several batches of ice and throw them away before the machine is safe to use again.
  • If water leaks, the machine will not turn back on, or ice production does not improve after cleaning, call a Scotsman service technician.

What you need before you start

Gather these items before you begin: a commercial ice machine cleaner (Scotsman sells its own brand, or you can use Affresh or similar products made for ice machines), a bucket large enough to catch water, a wrench or socket set to fit the water inlet connection, and a clean cloth. Do not use vinegar, bleach, or household cleaners — they can damage the machine's internal seals and leave residue that contaminates ice.

Check your Scotsman model number on the front or back of the machine. Different models have slightly different access points, and knowing your model helps you find the exact water inlet location in your manual. If you do not have the manual, Scotsman's website has downloadable PDFs for most models. Keep the manual nearby while you work so you can reference it if you get stuck.

Shutting down and disconnecting the water line

Turn off the ice maker at the power switch on the front of the machine. Wait five minutes for the compressor to stop running — you will hear it quiet down. Then turn off the water supply valve behind or below the machine. If you cannot find it, turn off the main water valve to your building.

Place a bucket under the water inlet connection (usually a small brass fitting on the back or bottom of the machine). Use your wrench to loosen the connection and let any remaining water drain into the bucket. Do not remove the connection completely — you will reattach it later. Wipe up any spilled water with a cloth so the area stays dry while you work.

Running the cleaning cycle

Open the access panel on the front or side of your Scotsman machine — the exact location depends on your model. You will see a small opening where water enters the system. Pour the commercial cleaner directly into this opening according to the bottle's instructions (usually 16 to 32 ounces, depending on your machine size). Close the access panel.

Turn the machine back on at the power switch. The cleaning cycle will start automatically and run for about 15 to 20 minutes. You will hear water flowing and the machine working harder than normal. Do not interrupt this cycle. The cleaner dissolves scale and mineral buildup inside the evaporator and water lines. When the cycle finishes, the machine will pause and the ice bin will be empty.

Flushing the system and reconnecting water

Once the cleaning cycle stops, reconnect the water inlet line by hand-tightening the brass fitting, then use your wrench to snug it firmly — do not over-tighten. Turn the water supply valve back on. The machine will begin making ice again.

Let the machine run and make three to four full batches of ice. Throw away all of this ice — it will contain residual cleaner and is not safe to use. After you discard the fourth batch, the ice should be clear and safe. If the ice still looks cloudy or smells like cleaner, run one more batch and discard it.

Cleaning the storage bin and exterior

While the machine is running its flushing cycles, remove the ice storage bin (usually a plastic or stainless steel tray that slides out from the front). Rinse it thoroughly with warm water and a cloth, paying attention to corners where mold can hide. If you see black or pink spots, scrub them with a soft brush and a little mild dish soap, then rinse completely.

Wipe down the exterior of the machine with a damp cloth. If your Scotsman has a stainless steel finish, use a cloth dampened with a small amount of white vinegar to restore shine — vinegar is safe on the outside, just not inside the water system. Dry the exterior with a clean cloth to prevent water spots.

What to do if something goes wrong

If water leaks from the connection you just reattached, turn off the water supply when ready and let the machine dry for 30 minutes. Then reconnect the fitting again, making sure it is hand-tight before you use the wrench. Leaks usually mean the connection was not tight enough, not that the machine is damaged.

If the machine will not turn back on after cleaning, check that the power cord is plugged in and the outlet has power. If the outlet works but the machine does not, the cleaning cycle may have triggered a safety shutoff. Unplug the machine for five minutes, then plug it back in and turn it on. If it still will not start, or if ice production does not improve after you run the flushing cycles, contact a Scotsman service technician — something inside may have been damaged during cleaning, though this is rare.

Frequently Asked Questions

Can I use vinegar to clean my Scotsman ice maker?

No. Vinegar can corrode the internal copper tubing and damage rubber seals inside the machine. Always use a commercial ice machine cleaner made for your machine type. Vinegar is safe on the exterior stainless steel, but never pour it into the water system.

How often should I clean if I have very hard water?

If your water has high mineral content, clean every three to four months instead of six. You will notice ice production slowing down or ice looking cloudy — these are signs that scale is building up faster than normal. A water softener can reduce how often you need to clean.

What if the ice still looks cloudy after I throw away four batches?

Run one or two more batches and discard them. Cloudy ice usually means residual cleaner or minerals are still in the system. If ice remains cloudy after six batches, the evaporator may need professional descaling — contact a Scotsman technician.

Do I need to clean the ice bin every time I clean the machine?

Yes. The bin collects bacteria and mold over time, especially in warm or humid environments. A quick rinse with warm water takes five minutes and keeps the bin sanitary. If you see visible mold or discoloration, scrub it with a soft brush and mild soap.

Can I drink the ice from the first batch after cleaning?

No. Always throw away at least three to four batches after cleaning. Even though commercial cleaners are food-safe in small amounts, you want to be certain no residue remains. The ice from the fifth batch onward is safe to use.