Commercial ice machine freezing up

A cafe or bar machine that is freezing up — ice that will not harvest, a solid sheet or block stuck on the evaporator, cubes bridged into one slab, or frost on the plate, a water line, or the bin — is often scale, low water flow, a room outside that model’s temperature range, or a blocked air path. Sometimes it is a harvest valve, a sensor, or the refrigerant circuit. This page is an owner checklist from public manufacturer manuals we opened on 2026-10-18. It is not a service procedure, not a bridge-thickness adjustment, and not a bid.

A machine that also stopped dropping ice for a power, bin-full, or filter reason lives on commercial ice machine not making ice. That page’s short thaw-and-restart note is the boundary. This page is the freeze-up itself. The clean interval, and cleaner versus sanitizer, live on how to clean a commercial ice machine. Cartridges and nickel-safe descaler live on water filters and descalers. Ambient limits, clearance, and water-line size live on installation requirements. A plated evaporator that has become a replacement lives on repair vs replace. Soft or off-tasting ice lives on cloudy or bad-tasting ice. Water on the floor lives on leaking water. A harvest click that is still normal lives on making noise. The condenser lives on air-cooled vs water-cooled.

Read the data plate, then that model’s current manual. The sentences below are the books we opened. A sibling cabinet can print a different bridge thickness, a different ambient floor, or no harvest-assist pin at all.

None of the ice-machine books opened for this page print the words “ice pick.” What they do print is thaw, the machine’s own harvest or water thaw, and a soft brush or cloth on a clean — not a scraper on the plate. That is the defrost section.

Three different “frozen” things

“Frozen up” on a service invoice is not one fault. From the bin door, separate these before you call.

• A sheet or a slab still stuck on the evaporator, and the machine has been running. That is a harvest that did not finish. Manitowoc’s undercounter owner manual (part 040005890, Rev 07, 08/22) calls the normal end of harvest a sheet that slides off when refrigerant gas warms the evaporator. Ice that is still on the plate is the thick-sheet row below.
• Cubes joined by a bridge that is too thick, or a slab frozen to the evaporator frame. Scotsman’s Prodigy modular cuber service manual (models including C0330, and Prodigy Plus) prints a normal bridge of 1/8 to 3/16 inch, and a shutdown cause of “ice bridge thickness too large, ice frozen to evaporator frame.” Ice-O-Matic’s Elevation Series CIM technical service manual (9/2025, CIM0320 through CIM2046) prints a different split: 3/16 inch on units under 400 lb, and 1/8 inch at 400 lb and above, measured across the middle of the slab. Those are not one thickness. A CIM0430A is a 430-class head on that manual’s own model-code key (its example is “4 × 10 = 400”). That puts it on the 400 and above side of the sentence, which is 1/8 inch, if you are using that key. We did not measure a slab. Do not turn the adjustment.
• Ice bridged in the bin, or cubes stuck together after they left the plate. Scotsman CU50 user manual, already cited on the not-making-ice page: level the pile with the scoop if it bridges up to the ice-level sensor while the rest of the bin is empty. The CU50 service manual says very hard water that has been softened “could result in white, mushy cubes that stick together.” That is ice in the bin, not a slab on the plate. The sensor-bridge note is the not-making-ice page. The mushy-cube sentence is the cloudy-ice page. This page does not repeat either procedure.

A flake or nugget machine that is grinding, or that has stopped turning an auger, is not this slab. Manitowoc’s flake and nugget handbook and the Ice-O-Matic GEM noise rows are already on making noise. We did not open a flaker “chip the cylinder” procedure, and we are not writing one.

What harvest is supposed to do

Harvest is how a cuber gets the ice off the plate. The method is not the same part on every brand. Naming the part is so the call is accurate. Testing the part is the stop line.

A harvest click, then a thump, with ice landing in the bin, is the normal sound already on the noise page. A click with no drop is this page.

What you can check before calling

Do these without opening a control box, without gauges, and without taking off a panel the owner manual does not assign to you. If the next step is a float, a bridge screw, a hot-gas valve, or a thermistor, stop. The “call a tech” section is the boundary.

1. Say which ice you are looking at

The useful call names the ice.

• One thick sheet still on the plate, and the bin is not the problem. Harvest did not finish.
• Cubes that dropped, then fused in the bin, or a pile bridged up to a sensor while the bin is otherwise low. That is the bin row, not a refrigerant call.
• Frost or ice on an incoming water line, with the plate clear. That is a cold line or a cold room. It is not yet a slab.
• White crust on the water path and a sheet that will not let go. That is scale. The clean is the next owner step the checklist allows.
• The machine is off the plate in some cells and empty in others, ice heavy at the bottom and thin at the top. Ice-O-Matic’s CIM book says a low charge or a restricted TXV can look like ice on the bottom and thin or no ice on the top. That pattern is a report. The pressures are the tech’s.

2. How to thaw it without tools

Turn ice making off and let the ice melt and fall. Then restart once. That is the owner defrost these books support.

• Manitowoc undercounter IOM. If ice is on the evaporator and the On/Off button is pressed, “the next cycle will have a thick slab of ice.” The note says press On/Off and allow the ice to melt off the evaporator, then start a new freeze cycle. The troubleshooting row for a thick sheet says the same correction twice: allow the ice to thaw and release, then restart. The two owner causes on that row are: the power button was turned off and on during the freeze and ice stayed on the evaporator, or the damper was opened and closed during harvest before the ice released. The same row’s other two lines are not an owner thaw: water trough too high (“adjust ice thickness float”) and long harvest cycles with a repeated safety-limit indication (“call for service”).
• The machine already has a thaw. On that Manitowoc book, a harvest that does not swing the damper inside 7 minutes starts a 170 second water thaw, then a second thaw. You do not add a kettle, a hose, or a heat gun on top of that cycle. If three of those long harvest-and-thaw cycles happen in a row, safety limit 2 stops the machine.
• Hoshizaki KM-350 / 520 / 660 service manual. Freeze-up diagnosis starts with one sentence to the technician: “Defrost and clean the icemaker prior to diagnosing freeze-up,” then fill out the freeze-up checklist. That defrost is the tech’s first step, not a pick. The same book says only qualified service technicians should service the appliance, and that repairs which open the refrigeration circuit must be done by properly trained and EPA-certified personnel. We are not walking through that checklist. It asks for head pressure, suction pressure, dip switches, and whether refrigerant was added.
• Ice-O-Matic CIM service manual, cleaning section. The clean starts by initiating a harvest so there is no ice on the plate and the sump is empty. The button in that book is press and hold POWER for 3 seconds (manual harvest, blue light flashing). That is this CIM book’s way to clear the plate before a clean. If that harvest does not drop the slab, stop. Do not hold the button as a way to cook the plate. The harvest chapter in that book says a harvest that runs too long can cause overheating or send liquid into the compressor.
• What not to put on the plate. Manitowoc’s undercounter clean says, once the descaler has stopped foaming, use a soft bristle brush, sponge, or cloth (not a wire brush) on the parts. That sentence is the soak, not a frozen slab. Ice-O-Matic’s CIM cabinet-care paragraph says do not use steel wool, abrasive sponge pads, wire brushes, or scrapers on the stainless and aluminum. That paragraph is the cabinet, not a procedure for a frozen evaporator. We are citing both because they are the tool lists those books print, and neither list is an ice pick. Hoshizaki’s freeze-up causes include an evaporator that is damaged. Ice-O-Matic says a slab that resists should be examined for loss of plating, pitting, mineral accumulation, or loose horizontal dividers, and a divider that has separated from the base means replace the evaporator. Scotsman’s general commercial service training deck 291-848 lists “damaged plate” under ice that is not releasing. A tool that punctures the plate is that damage. It is also a refrigerant leak. We will not describe how to find the leak.
• No added heat, and no time we invented. None of the thaw lines we read say to use a torch, a heat gun, a hair dryer, or boiling water. None of them print a minute count for “wait until it lets go.” Wait until the sheet is off the plate. Then restart once. If you would have to guess a clock, you are already at the call.

Scoop loose ice out of the curtain or the damper path before that restart, with the machine off. Scotsman’s Prodigy air-cooled chart: “ice jammed in between curtain and sump” is a false bin-full signal, and the printed correction is “clear ice away.” Manitowoc’s undercounter checklist: the damper has to be upright and able to swing freely. Clearing a loose chunk with the scoop is that sentence. Prying a slab off the plate is not.

Hoshizaki’s KM instruction manual says wait at least 3 minutes before restarting after a shutdown, “to prevent damage to the compressor.” That sentence is already on the not-making-ice page, from the instruction PDF retrieved 2026-10-05. We did not re-open that instruction PDF today. The service manual we did open uses a 3 minute wait in the long-storage blow-out, which is a different procedure. Do not flip the breaker every few seconds either way.

3. Water supply, filter, and the inlet you can see

A harvest that cannot get water, or a freeze that cannot get enough water, builds the wrong ice and then will not drop it.

• Manitowoc undercounter checklist, on shallow or incomplete cubes and on low capacity: water pressure 20–80 psi, and “water pressure is too low or water filter is restricted.” Hot incoming water is on both of those rows. The correction is a cold supply and a new filter, at that pressure. Above 80 psi the installation text in that book, already cited on the not-making-ice page, says get a regulator. We did not re-read the installation checklist today.
• Hoshizaki KM service manual, freeze-up, harvest cycle. The possible-cause list includes low water pressure, external water filters clogged, and a water line that is too small. The line-size cell on that list says minimum 1/4 inch nominal ID. The freeze-up checklist form in the same manual says 3/8 inch nominal ID copper tubing or equivalent. Those two cells disagree. Use the PDF that matches the serial. Do not average them into a 5/16 inch line. The same harvest list includes a clogged inlet-valve screen or orifice, and a float switch that is dirty or sticking. Cleaning that float is the service procedure (panels off, and a warning not to remove the lock nut). An owner does not pull it.
• Ice-O-Matic CIM service manual, the requirements page we read: incoming water 40–100°F, 20–80 psi, and the warning “connect to unheated potable water only.” A dirty water system, the evaporator chapter says, causes poor flow and improper ice. The inlet-valve troubleshooting on that book says check the supply and the filters for blockages before anyone calls the valve coil open. That coil test is the tech’s.
• Scotsman Prodigy, shutdown on maximum harvest time: incomplete ice formation, “check water distributor for partially plugged holes.” Long harvest includes a dirty evaporator, “de-scale water system.” Plugged holes are scale or debris. They are the cleaning guide, with the cleaner that model lists, or a tech visit. They are not a stronger acid. The filters page already says a hardware-store acid can damage plating.

Owner check: the ice-maker shutoff is open, the line is the cold potable line, and a filter gauge (if you have one) is not sitting at the bottom of its scale. If the cartridge is past the gallons or the months on its sheet, change that cartridge. Do not swap in a refrigerator filter. The filters page already says that starves pressure.

4. Scale on the plate

White crust, a sheet that will not release, and a harvest that keeps getting longer are the mineral pattern these charts name.

• Manitowoc undercounter: “ice machine does not release ice or is slow to harvest” — first cause, “ice machine is dirty,” correction “de-scale and sanitize.” An extremely dirty machine “must be taken apart.” That sentence is already on the cleaning guide. If the plate is crusted and the one clean does not finish, that is the tech visit, not more acid.
• Hoshizaki KM service, freeze-up: evaporator “scaled up” is cause 1 on both the harvest-cycle list and the freeze-cycle list. Spray tubes dirty or out of position are on both lists. Long harvest starts with the same scaled evaporator.
• Scotsman Prodigy: long harvest cycle, “dirty evaporator — de-scale water system.” The ice-thickness sensor, the same manual says, “will become coated with mineral scale,” and that coating “can cause changes in bridge thickness.” Removing that sensor, separating the metal tip from the plastic, and wiping it with scale remover is the service procedure printed there. The owner path is the clean the user manual assigns, not that sensor pull.
• Ice-O-Matic CIM: mineral accumulation is one reason a slab resists. The evaporator “should always have a nickel appearance.” A rust color after a thorough cleaning may mean the plating has come off, and a replacement may be required. A dull rainbow shimmer may mean an improper cleaner. “Only approved nickel-safe ice machine cleaner should be used.” The cabinet-care list also bans nitric, sulfuric, hydrochloric, carbolic, and acetic acids, non-food-grade vinegar, and chlorine bleach on the machine. The ounces stay in the manual. A plated evaporator that has already lost its nickel is the repair vs replace conversation.

5. Room temperature, and the air path

Hot and cold fail differently. Do not treat them as one “ambient” fault.

Owner check: is the cabinet next to a fryer, a dishwasher, or a closed closet, and is the water line actually cold? Move the boxes off the louver. Who brushes the coil is per book, and the not-making-ice page already splits CU50’s kickplate from a Hoshizaki coil behind a technician’s panel. A room you cannot warm above the book’s floor, or cannot cool under its ceiling, is an installation problem. The clearance numbers stay on installation requirements and air-cooled vs water-cooled.

6. Level, damper, and curtain

• Manitowoc undercounter, slow harvest: “ice machine is not level — level the ice machine.” The same checklist wants the damper upright and free to swing. If the cabinet was sealed to the floor, do not pry it up. That limit is already on the leak page.
• Scotsman Prodigy, maximum harvest time: “curtain out of position — check curtain for swing restriction.” A curtain that cannot swing will not tell the board the slab has fallen. Looking at a curtain you can see, with the machine off, is the owner check. An ohm test of the curtain switch is the chart’s next line, and it is the tech’s.
• Ice-O-Matic CIM installation text inside the 9/2025 service manual: level within 1/8 inch in all directions, then evaluate bridge thickness. That 1/8 inch is the CIM book. The leak page already says not to copy it onto a NEO.

7. One restart, and the light that means stop

Manitowoc’s undercounter safety-limit note: press On/Off off, then on, once. If the safety limit had stopped the machine, it restarts after a short delay. Let it run. If it stops again, call. The Service light on that touch pad is the safety-limit indication (red = needs service). We are not printing which of the three limits fired. The book sends that to its section 5, and the owner line is the one restart.

Hoshizaki’s service manual tells the technician to defrost and clean before diagnosing, and then to complete a freeze-up checklist that includes refrigerant pressures. That is not a second owner restart.

Scotsman’s Prodigy controller will already have waited 50 minutes and tried again, up to two automatic resets, before it wants a manual reset. If it has shut down after those tries, the reset is the tech’s, with the book, not a closer holding the power button.

What each freeze-up usually points to

“Usually” means the cause printed on the manual we cite, not a promise about your serial number.

Sensors and the harvest valve — what the owner does not test

These parts are why a thaw that does not stick is still a tech call the second time. The checks are in service manuals. We are not reprinting ohms, dip switches, or coil voltages.

• Water and ice-thickness sensors. Manitowoc’s undercounter book will not cycle into harvest if the harvest float is dirty (de-scale), if its wire is disconnected, or if it is out of adjustment. The six-minute freeze lock-in on that book is a wait, not a fault: harvest cannot start until it expires. Hoshizaki’s freeze-up list includes a float switch that is dirty, sticking, or defective, and a thermistor that is loose, disconnected, or defective. The thermistor check in that service manual is a resistance test in ice water (4.7 to 6.2 kΩ is the “normal range” sentence there). That test is the technician’s. Scotsman Prodigy’s ice-thickness sensor is what ends the freeze when water touches it; scale on it changes the bridge. CU50’s cycle is a thermistor on the evaporator outlet, not that sensor. Ice-O-Matic’s CIM low float is what starts harvest, and a separate thermistor watches sump water and stops the pump for 20 seconds at 38°F (anti-slush). Hoshizaki’s anti-slush, in the KM service manual, is the suction-line thermistor at 36°F (2.2°C) and a 10 second pump pause. Those are two temperatures and two sensors. Do not mix them.
• Harvest valve. Every cuber book above uses hot gas to warm the plate. A valve that does not open, or that stays open during freeze, is on the Hoshizaki freeze-up list, the Prodigy maximum-harvest list, the CU50 “does not harvest” list, and the CIM harvest chapter. Scotsman’s 291-848 training deck groups “ice not releasing” as lack of heat from a hot-gas or vapor valve that does not open or opens only partly, plus a dirty machine, an oversized cube, an undersized or partial cube, very cold conditions, a Prodigy harvest-assist failure, and a damaged plate. That deck is training, not an owner manual. The valve is still the tech’s.
• Refrigerant. Hoshizaki’s freeze-up list includes a low charge on both the harvest list and the freeze list. The checklist that goes with it asks whether the machine was leak-checked and whether refrigerant was added. Prodigy’s long-freeze row says add refrigerant and, if the cycle shortens, look for a leak. That sentence is a service diagnosis. We will not describe a manifold, a scale, or “topping off” the gas on the data plate. The plate’s refrigerant is already a repair vs replace topic.
• Harvest assist, the mechanical kind. Scotsman’s pin and Ice-O-Matic’s probe push the slab. Hoshizaki’s KM “harvest assist” in the book we opened is the water pump at the end of harvest. A pin that does not extend, or a pump-timer dip switch, is not an owner adjustment. The KM service notice says adjustment outside the factory default may damage the appliance.

Stop and call a qualified refrigeration tech

Stop when the next action is any of these.

• The slab is still on the plate after the one thaw-and-restart the Manitowoc checklist allows, or a CIM manual harvest does not clear the plate. Do not chip, pry, scrape, or heat it.
• A safety limit or a Service light that returns after one off/on. Manitowoc: call. Prodigy: a third failed harvest wants a manual reset with the book, not another cycle tonight.
• Any float, ice-thickness probe, thermistor, curtain switch, or harvest timer. The numbers above are how you tell the tech which book you mean. They are not a screwdriver procedure.
• The hot-gas valve, a harvest-assist pin or probe, a water-regulating valve, or the refrigerant circuit. Gauges and adding charge are out. Hoshizaki’s service manual says opening the refrigeration circuit is EPA-certified work.
• A plate that is pitted, rainbow-stained, rust-colored after a real clean, or missing a divider. Ice-O-Matic’s remedy line for a separated divider is replace the evaporator. That is a parts call, and it is the repair vs replace conversation if the tech says the plate is done.
• A water line you would have to replace because the two Hoshizaki cells do not match, or a room that cannot be brought inside the table. Check your local plumbing code and a licensed plumber before anyone reties the supply. This page is not that code.
• You do not have the manual that matches the data plate. A CU50 6-minute harvest maximum is not a Prodigy 3.5-minute maximum. A CIM 1/8 inch bridge is not a Prodigy 7/32 inch sensor gap. A Hoshizaki pump-at-the-end-of-harvest is not a Scotsman pin.

Tell the tech the model, the serial, whether the machine is air-cooled or water-cooled, what the ice looked like (slab on the plate, thick bridge, bin only, frost on the line), the room temperature if you measured it, the filter date, and whether you already let it thaw once. That is the useful call. It is not a quote, and it is not health-code advice.

What this page is not

• Not a service manual. No dip switches, no thermistor ice-bath procedure, no bridge-screw turns, no refrigerant pressures, no ounce table.
• Not the “no ice” page. Power, a full bin, and a dead compressor stay on not making ice. This page is the ice that froze and did not come off.
• Not the cleaning page or the filter page. Intervals and cartridges stay on how to clean and filters and descalers.
• Not the installation page. Clearance and the pre-delivery list stay on installation requirements. The temperature table here is only the cells that explain a freeze-up.
• Not a flake or nugget auger page. Grinding and a seized auger stay on making noise.
• Not a health-code or plumbing-code opinion. NSF listings and the installation manual are what you show an inspector.
• Not a review and not a price.

Sources

1. Manitowoc, undercounter ice machines owner/installation manual, part 040005890 Rev 07 08/22 — harvest: refrigerant gas warms the evaporator and the sheet slides off if it clears the damper; maximum harvest 7 minutes; if the damper does not open and close, a 170 second water thaw, then a second thaw; safety limit 2 stops the machine after 3 consecutive 7-minute harvest-and-thaw cycles; On/Off during freeze or harvest with ice still on the plate makes the next sheet a thick slab — allow the ice to melt off, then start a new freeze; thick-sheet checklist: thaw and restart, or adjust the ice-thickness float, or call for service on a repeated safety limit; slow harvest: dirty (de-scale and sanitize), air at least 40°F on air-cooled, level the machine, replace a water-regulating valve that leaks in harvest on water-cooled models; does not cycle into harvest: six-minute lock-in, dirty harvest float, wire, adjustment; low capacity: air not over 110°F, dirty condenser, blocked airflow, restricted filter, 20–80 psi; clean uses a soft bristle brush, sponge, or cloth, not a wire brush; Service light = safety limit; off then on once, call if it stops again (retrieved 2026-10-18). UYF-0140A is the directory head in the U140 class.
2. Hoshizaki, KM-350 / 520 / 660 M_J service manual, number 73230, issued 10-29-2018, revised 5-12-2021 — only qualified service technicians should service the appliance; ambient 45–100°F, stay above freezing, not outdoors, do not leave it on in sub-freezing temperatures; suction-line thermistor ends the temperature portion of harvest at 48°F / 3.9 kΩ; harvest assist on this book is harvest pump time; anti-slush at 36°F for 10 seconds; freeze-up section: defrost and clean before diagnosing, then the checklist; harvest freeze-up causes include scaled or damaged evaporator, dirty spray tubes, low water pressure, clogged external filters, water line minimum 1/4 inch nominal ID on that list, clogged inlet screen, dirty or sticking float, low charge, loose or defective thermistor, defective hot gas valve; the checklist form in the same manual says 3/8 inch nominal ID. Both cells are printed above. Thermistor check 4.7 to 6.2 kΩ is a service test and is not an owner procedure. Opening the refrigeration circuit is reserved for EPA-certified personnel (retrieved 2026-10-18). KM-520MAJ is in this manual. KM-81BAK is a different family.
3. Hoshizaki service bulletin SB03-0003 (27 June 2003) — many freeze-up calls are low water flow during harvest, dirty evaporators, or defective bin controls or float switches; harder cases are why the checklist exists. The GPM and line-size blanks on that 2003 form are not copied here. The 2021 KM service checklist is the form we quoted for KM-350 / 520 / 660 (retrieved 2026-10-18).
4. Scotsman, Prodigy series modular cuber technical service manual, models including C0330, includes Prodigy Plus — do not make the bridge too thin or the machine will not harvest; bridge adjustments are not warranty; sensor-tip gap 7/32 inch; illustrated bridge 1/8 to 3/16 inch; max harvest 3.5 minutes, then off 50 minutes, two automatic resets, then a manual reset; shutdown on maximum harvest time: bridge too small, bridge too large and frozen to the frame, purge valve, plugged distributor holes, curtain restriction, curtain switch, very cold ambient, hot gas valve not opening, harvest-assist probe, damaged evaporator; long harvest: dirty evaporator (de-scale), no harvest assist, bridge too big, very cool ambient; false bin full from ice jammed between curtain and sump (“clear ice away”); ice-thickness sensor scale changes bridge thickness. The sensor-cleaning steps are service and are not copied here (retrieved 2026-10-18). C0330MA-1 is the directory head in this family.
5. Scotsman, general commercial service training, form 291-848 — “ice not releasing,” any model on that page: hot gas or vapor valve not opening or opening partly, dirty machine, oversized cube, undersized or partial cube, very cold conditions, Prodigy harvest-assist failure, damaged plate. This is a training deck, not an owner manual (retrieved 2026-10-18).
6. Scotsman, CU50 service manual — defrost method on the system page: hot gas bypass with water assist; harvest until the suction-line thermistor is about 50°F, then a default 20 second timer; maximum harvest 6 minutes; “makes ice, does not harvest”: wrong cube size, hot gas valve does not open, water temperature very low, fan does not stop. Cube-size and harvest-time button sequences are not reprinted. Very hard water that has been softened “could result in white, mushy cubes that stick together.” Page dates in the copy cited on the leaking-water guide run from 2010 into December 2019. Confirm the copy that matches the serial (retrieved 2026-10-18). CU50 is the directory cabinet. It is not a Prodigy head.
7. Ice-O-Matic, Elevation Series CIM technical service manual, 9/2025, CIM0320 through CIM2046, read from the Webstaurant PDF — air-cooled ambient 50–100°F at 60 Hz (110°F at 50 Hz); remote −20–120°F on that requirements page; incoming water 40–100°F, 20–80 psi, unheated potable only; bridge 3/16 inch under 400 lb and 1/8 inch at 400 lb and above; low float starts harvest; harvest assist probe; hot gas valve; minimum harvest 20 seconds; maximum 5 minutes before serial 2106 and 7.5 minutes after; water pump assists at 5 minutes on boards after January 2023; anti-slush thermistor at 38°F for 20 seconds; a slab that resists: lost plating, pitting, minerals, loose dividers, and replace the evaporator if a divider has separated; nickel appearance; nickel-safe cleaner only; low charge or restricted TXV can ice the bottom and leave the top thin; cleaning starts with a manual harvest so the plate is clear (POWER held 3 seconds in that book); cabinet care: no steel wool, abrasive pads, wire brushes, or scrapers. Level 1/8 inch is in that same manual. The copy we opened was that retailer PDF of the OEM manual (retrieved 2026-10-18). CIM0430A is in this series.
8. Hoshizaki KM instruction manual’s “wait at least 3 minutes before restarting” sentence is the one already cited on not making ice, retrieved 2026-10-05. We did not re-open that instruction PDF on 2026-10-18. The CU50 user manual’s bin-bridge and 50°F notes are the same: cited on that page, not re-opened today.
9. Existing VenueIce pages this article points at instead of repeating: not making ice, how to clean, filters and descalers, installation requirements, repair vs replace, cloudy or bad-tasting ice, leaking water, making noise, air-cooled vs water-cooled.

If two sheets disagree, use the PDF that matches the serial.