Quick answer: Hoshizaki’s minimum is cleaning and sanitizing at least once a year for cube machines, and at least twice a year for flakers and cubelet or dispenser units, with hard water or heavy use pushing it higher. It is a two-step job: a scale remover to strip mineral buildup, then a sanitizer to kill mold and slime.
Hoshizaki sets its cleaning minimum by machine type rather than one number for the whole lineup, which is the detail most owners miss (the breakdown is below). The job uses two Hoshizaki-approved chemicals: a scale remover that dissolves the lime built up on the water system, and a separate sanitizer that kills the bacteria, mold, and pink slime (usually Serratia marcescens) that grow in the food zone. Whatever the interval, the standard behind it is the same: the FDA Food Code holds a food-contact surface to “clean to sight and touch,” and an ice-machine interior is one.
Key facts
- Interval by machine type: at least once a year for cube makers, at least twice a year for flakers and cubelet or dispenser units.
- Hard water or heavy use shortens it from those minimums.
- Two chemicals: a scale remover first, then a sanitizer. Never mix them.
- The manual is the authority. Cubers, flakers, and nugget machines each have their own cleaning path.
- Discard the first batch or two of ice after the clean.
How often should you clean a Hoshizaki ice machine?
Hoshizaki sets the minimum by machine type: at least once a year for cube makers, and at least twice a year for flakers and cubelet or dispenser models. Hard water or heavy use shortens the interval from there. Those are floors, not targets, so a machine on hard water or a heavy bar service often needs it more often. NSF/ANSI 12 certifies the design, not the current state; a certified machine still grows biofilm once the interval slips.
Why does Hoshizaki set the interval by machine type?
A flaker or a dispenser earns the twice-a-year minimum because it keeps ice in contact with more internal surfaces than a cube machine does, and a dispenser adds a customer-touched chute on top of that. More wetted surface and more continuous contact give biofilm more places to grow, so those units get the shorter interval even when the ice still looks fine. Give them the twice-a-year clean on the calendar rather than waiting for a sign.
Why does a Hoshizaki need two different chemicals?
The scale remover strips the mineral buildup off the water lines and evaporator; the sanitizer kills the biofilm on the wet surfaces, and a flaker or dispenser has more of those than a cuber does. Run the scale remover first so the sanitizer meets clean metal, keep the two chemicals apart, and wear gloves and eye protection with both. The sanitizer is the step that keeps slime from coming back. More on the health stakes: is mold in an ice machine dangerous?
How do you clean a Hoshizaki ice machine?
Hoshizaki builds several ice types (cubers, flakers, nugget) and the cleaning path differs between them, so the unit’s own manual is the authority. The basic sequence is the same:
- Empty the bin so no ice is contaminated during the clean.
- Put the machine into its wash or clean mode and add the scale remover at the manual’s dilution. Let it circulate through the water system.
- Drain, then follow the flush and rinse steps the model calls for.
- Remove the accessible food-zone parts, the water tank, float, and water tubes, and hand-clean them to clear scale from the small openings.
How do you sanitize and finish?
Run or apply the sanitizer per the model, then wipe the bin and food-zone surfaces with sanitizer solution and let them air dry. Reassemble, restart, and throw away the first batch or two of ice.
Common questions
How do you clean a Hoshizaki ice machine? Clean and sanitize at least once a year for cube machines, and at least twice a year for flakers and cubelet or dispenser units, with hard water or heavy use pushing it higher. It is a two-step job: a scale remover to strip mineral buildup, then a sanitizer to kill mold and slime.
How often should you clean a Hoshizaki ice machine? Cube makers: at least once a year. Flakers, nugget, and cubelet or dispenser units: at least twice a year. Hard water or heavy use pulls both shorter.
Why do flakers and dispensers need cleaning more often than cube machines? They wet more internal surface and, on a dispenser, add a customer-touched chute, so biofilm has more room to grow.
Do you have to use Hoshizaki’s own chemicals? Use a proper ice machine scale remover and sanitizer at the labeled strength, following the dilution in your model’s manual. Do not substitute bleach for the sanitizer or vinegar for the scale remover, and never mix the two chemicals.
When an ice machine slowly drops its output, scale on the evaporator is the usual reason, and a full clean brings it back. ProToCall handles the descale and sanitize on the right interval for your machine type and your water, so a flaker or dispenser gets the twice-a-year attention it needs. Call 866-297-5082 or put it on ProCare 360. For the brand-specific steps on other machines, see Scotsman and Manitowoc cleaning.