How to Verify a Cleaner or Sanitizer Is Approved for Your Ice Machine Before Purchase

Manitowoc ice machine cleaner and sanitizer · November 8, 2026

Why the chemical has to match the machine

A commercial ice machine makes ice from water that is mostly clean, so the dissolved minerals stay behind in the water trough or reservoir and build up as scale on the evaporator, the water distribution parts and the sensors. An acid descaler dissolves that scale. A sanitizer is a separate step that treats the food-contact surfaces afterward. The two jobs use different chemistry, and the machine’s metal and plastic parts tolerate each one differently.

That is why a bottle that says it cleans ice machines is not enough to buy on. The chemical has to be one the manufacturer’s cleaning procedure allows for your cuber, nugget or flake machine, and it has to be used at the dilution and contact time that procedure gives. Using the wrong product can leave residue on ice-contact surfaces or attack the evaporator, and it can give the manufacturer a reason to deny a warranty claim.

What each manufacturer says in its own documents

Read the wording in the documentation for your brand. The four brands do not word it the same way.

Manitowoc: several Manitowoc manuals say Manitowoc Ice Machine Cleaner and Sanitizer are the only cleaner and sanitizer approved for use with Manitowoc products. Newer manuals say the Manitowoc de-scaler and sanitizer are the only products approved for use in that machine. The manuals call for descaling and sanitizing at least every six months. If a machine needs it more often, they tell you to have a qualified service company test the water and recommend treatment.
Hoshizaki: the model-specific cleaning sheets name Hoshizaki Scale Away for the cleaning step. They give different quantities for different model series, in fluid ounces for some and as a dilution table for others. The sheets say to clean and sanitize at least once a year.
Scotsman: Product Application Bulletin 2019-01 names Scotsman Clear 1 as the recommended scale remover and describes it as a food-grade acid. Scotsman user manuals also warn that ice machine cleaner contains acids that can burn skin.
Ice-O-Matic: the cleaning steps in its manuals call for an approved nickel-safe ice machine cleaner, diluted as the manufacturer directs. The manuals also state that incorrect cleaners, sanitizers, and reverse-osmosis water without a neutral pH could void the warranty.

Read the product label against the cleaning procedure

Once you know what your manual allows, check the bottle. Look for these on the label and the safety data sheet:

Function. Is it a descaler, a sanitizer, or a combined product? Your procedure has separate steps, and a product for one step does not replace the other.
Dilution and contact time. The label directions should be compatible with the amount and soak time in your procedure. If your manual specifies a quantity of cleaner for your model, a differently concentrated product changes what that quantity does.
Food-contact use. A sanitizer for surfaces that touch ice should say so, and it should state whether a rinse is needed afterward. Where the product is EPA-registered, the registration number appears on the label.
Metal compatibility. Nickel-safe wording matters because the evaporator and other metal parts react to some acids. The Ice-O-Matic manuals note that low-mineral water can attack the evaporator and other metal.
Safety data sheet. The sheet lists the active ingredient. Never mix an acid product with a chlorine product, because the two react and release chlorine gas.

Match the procedure to your exact model, not just the brand

Brand-level approval is the starting point. The procedure itself varies by model family. Hoshizaki publishes separate cleaning sheets for its KM, DCM, F and FS series, and the quantities and steps differ between them. A modular cuber with a water pump and a spray-bar distribution system is cleaned differently from an extruded-nugget machine with an extruding head, where the instructions say to pour solution into the head.

Before ordering, record the model number and serial number from the data plate. Pull the cleaning or maintenance section of the service manual for that exact model. Confirm the revision, because chemical names and part numbers change between manual editions. Note whether your machine has a cleaning cycle or valve, since some models descale through a switch setting and others through a panel button or controller.

Also note any water treatment. If a filter cartridge or reverse-osmosis system feeds the machine, mention that to the manufacturer or service dealer. Ice-O-Matic’s pH note for RO water is one example of how water treatment affects which chemistry is safe.

Claims that do not establish approval

Be cautious with listing language such as works on all brands, universal ice machine cleaner, or commercial grade. None of these says your manufacturer’s procedure supports the product. A cleaner can do a good job on scale and still not be what your manual allows.

Third-party brands such as Nu-Calgon sell ice machine cleaners and sanitizers. Whether a given product is acceptable for your Manitowoc, Hoshizaki, Scotsman or Ice-O-Matic machine depends on that manufacturer’s wording and on what your service agreement or warranty requires. A product listing, a reseller’s compatibility chart or a reviewer’s comment is not that wording.

If your manual does not name a chemical, or the model is old enough that the manual is hard to find, contact the manufacturer’s technical support or your authorized service dealer. Ask them to confirm the product name in writing, and keep that reply with the machine records.

Check the bottle against the list when it arrives

Compare the product name on the received bottle with the name in your procedure. Pre-mixed and concentrate versions can share a brand. Scotsman’s safety data sheets, for example, cover a Clear 1 Pre-Mixed product as well. A pre-mixed bottle is not diluted like a concentrate, so a procedure written for one gives the wrong strength with the other.

Check that the size and form match the quantity the procedure calls for, and that the bottle is sealed and labeled. Keep descalers and sanitizers separate and never combine them. Descaling comes before sanitizing, and the machine should be rinsed as the procedure says before ice goes back into the bin. If the procedure is for a technician-only task, stop and book the service visit rather than improvising.

FAQ

Can I use any nickel-safe ice machine cleaner on my machine?

Nickel-safe wording is one compatibility point and does not make a cleaner approved for your machine. Check your manufacturer’s cleaning procedure for the product it names or the requirements it lists. Ice-O-Matic’s manuals call for an approved nickel-safe cleaner, while Manitowoc’s manuals name its own products as the approved ones.

Where do I find which cleaner my ice machine supports?

Open the cleaning, descaling or maintenance section of the manual for your exact model, using the model number on the data plate. Brands also publish cleaning sheets, service bulletins and product application bulletins. If the manual is unclear, ask the manufacturer or an authorized service dealer to confirm the product name.

Does the sanitizer need to be the same brand as the descaler?

Follow your procedure for each step. Manitowoc names its own de-scaler and sanitizer as the approved products, so with that brand you would use its products for both steps. For other brands, check what the manual says about the sanitizing step and check the label for food-contact use, concentration and rinse directions.