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AM SERVICE TRAINING
Featuring the
AM-50BAE, AM-100BAE, AM-150BAF
AM -50BAE
AM-100BAE AM-150BAF
80047 www.hoshizakiamerica.com 5-20-04
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All AM models have similar sequence of operation. This manual is designed as a generic AM Training manual. The Hoshizaki AM series ice machine uses a horizontal evaporator design which forms a unique cube shape. 20mm 25mm The compact AM-50BAE unit is 14 7/8”w x 22 5/8”d x 33 1/2”h and is designed for counter-top, under-counter, or freestanding installations with up to 51 pounds of production
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A standard 120-volt power cord provides the WATER INLET CONNECTIONS electrical connection. The unit is designed to 3/8” Male flare operate on a separate 15-amp circuit. Inlet Water Line Connection st • 1 production units had a 3/4" BSP connection directly to the inlet water valve. (DO not connect with 3/4" FIP) 4A3207-01 • Fitting (4A3207-01) and gasket 413854-01 were used from May 1/2” FPT through July production. (Through August on the AM-100BAE a
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In the case of an AM-50 if a drain is not located in an area that will allow for the proper fall, there is an optional condensate pump available that can be installed directly into the unit. After removing the louvered rear panel the pump location is defined by the two metal tabs. This pump has a built in safety that will shut the AM-50 down in the event of a pump problem. This pump is available as an accessory through your local distributor. Simply follow the instructions
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The horizontal evaporator and water distribution system are unique to the (AM-50) Hoshizaki AM and IM series. The AM and the IM series are similar in the fact that they both make ice on a horizontal evaporator. The AM evaporator design however is different, as shown in the center picture. The moving IM water plate and associated parts are eliminated with this simple design. The AM-50BAE produces 24 cubes and .60 pounds per cycle. The AM-
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The AM series uses a combination thermistor and control board to control the THERMISTOR sequence of operation. When the toggle switch is placed in the “ON” position and the bin control calls for ice, the unit will begin in the initial harvest cycle. Starting Thermistor the unit in harvest allows the compressor to start in an unloaded condition, greatly extending the life of the compressor. This operation is common among all Hoshizaki cube icemakers. During the initial
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Throughout the freeze cycle, which normally last 14~33 minutes, depending on model and operating conditions, the unit will continue to circulate the water from the reservoir to the horizontal evaporator, through the spray tubes. When the temperature of the evaporator has reached approximately 26.6°F (-3°C) and the thermistor signals approximately 6.8KΩ the freeze completion timer will start and count down 8 minutes. The control board will then switch to normal
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The AM series uses a thermostatic bin control located on the right rear side of the ice storage compartment. This control will open when ice touches the sensing bulb and the unit will shut down This control includes a small heater to eliminate the control opening due to low ambient temperatures in the bin. Access the control by removing the wiring channel from the rear of the unit. The thermostatic bin control is factory set and should shut down the unit within 10 sec
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AM-50BAE: The control switch is marked “ICE- OFF-WASH” and is located on the lower right front of the unit. AM-100 & AM-150: The control switch is located on the control box which is located behind the front panel on the left hand side of the unit. If it is necessary to gain access to the control (AM-50BAE) box, the louvered panel must be removed. AM-50BAE: This can be done by removing the two screws from the lower portion of the front panel and
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CONTROL BOARD: A solid state board controls the AM operation. The control board is factory adjusted to produce consistent ice in all ambient conditions. “NO SEASONAL ADJUSTMENTS ARE REQUIRED” There are no adjustments needed, however there are two variable resistors on the control board. The first resistor VR1 is used to fine tune the harvest termination temperature adjustment when the control board is manufactured. The adjustment is sealed with red paint and shou
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Preventative maintenance for the AM is simple. Follow these steps to allow the unit to operate efficiently. 1. Clean the condenser once a year using a brush or vacuum. 2. Check and clean the inlet water valve screen as needed to assure proper water flow. *Remember that the original fitting is a 3/4” BSP and the use of a standard MPT fitting will damage the threads. In May of 2003, this fitting was changed to 3/8” male flare. After August and September of 2003, this fit
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Cleaning tips: • A detailed cleaning label is located on the back of the icemaker door of the AM- 50BAE or on the back of the bin baffle of the AM-100 & AM-150. More detailed instructions are included in the customers Instruction Manual or in the product Service Manual. This manuals can be viewed at www.hoshizaki.com • Always follow the cleaning instructions and use the recommended ice machine cleaner. The following instructions provide information on the disassembly
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Disconnect the suction tube that connects the pump motor to the sump tank. The AM-50BAE has a locking tabs that can (AM-50) be released by compressing both plastic tabs to unlock the joint in the direction of the black arrows and pulling the pipe clear to drain the Tank. AM-100BAE & AM-150BAF simply pull the pipe of the connector (AM-100 & AM-150) AM-50: Spread out the tabs on both sides to unlock the water tank, and pull it out toward you. Clean
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AM-50BAE: Lift off the ice chute from the front frame pipe and then from the rear frame pipe clean and sanitize the ice chute The AM-100 & AM-150: ice chute is incorporated into the water plate and will be removed as one assembly in the next step. Check to see if cube guide pulls out with sump tank (AM-50) Pull the discharge tube from the spray assembly. Remove the assembly by pulling it toward you. (AM-100 & AM-150) Remove the caps to clean and sani
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(AM-50) Refit the caps on the cleaning outlets to seal them off. (AM-100 & AM-150) AM-50: Slide in the spray assembly along the rails on the right and left brackets. Refit the discharge tube securely on the spray outlet. Note: A loose fitting may cause a water leak and improper water spray during freeze. (AM-50) AM-100 & AM-150: Slide the water plate along the mechanism base. Refit the (AM-1
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AM-50: Position and lock the ice chute on to the front and rear frame pipes by pushing the chute down until it clicks (AM-50) AM-100 & AM-150: Place the rear of the water tank on the water tank rest at the back of the storage bin. Use the thumbscrews to secure the front of the water tank to the mechanism base. (AM-100 &AM-150) AM-50: Slide in the water tank along the rails at the bottom of the right and left brackets until it clicks into place
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AM-50BAE: Refit the suction tube on to the water tank inlet by pushing the joint to lock it securely in the arrow directions. (AM-50) The AM-100 & AM-150 uses a simple push on suction hose. Note: A loose fitting may cause a water leak. (AM-100 & AM-150) Hook each separator on the rail and pull it hard toward you until it locks in place with a click. Refit all the separators in the same way. Refit the bin slope in its correct po
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