UniFlow Maxx Ice UIM225NB Ice Cube Machine Instruction Manual

UniFlow Maxx Ice UIM225NB Ice Cube Machine

Technical Information

Component Information

Ice Maker Installation

REMOVE PACKAGING MATERIALS

• To remove any remaining tape or glue, rub the area briskly with your thumb. Tape or glue residue can also be easily removed by rubbing a small amount of liquid dish soap over the adhesive with your fingers. Wipe with warm water and dry.
• Do not use sharp instruments, rubbing alcohol, flammable fluids, or abrasive cleaners to remove tape or glue. These products can damage the surface of your ice maker.
• Leave lowermost foam panel in place until after the adjustable feet are attached.

Cleaning before use

After you remove all tape and glue from the machine, clean the inside of your ice maker before using it. See “Interior Cleaning” in the Cleaning and Maintenance section.

Installing the adjustable feet

At least two persons are required to install the adjustable feet. You will find four adjustable feet packed in the ice storage bin. To install, tilt one side of the unit and screw in two adjustable feet, as illustrated. (IMPORTANT: Do not tilt the unit more than 45º) . Then tilt the other side and screw in the remaining two feet.

Ice Maker Installation

INSTALLING THE STABILITY BRACKETS

This operation requires at least two persons. If you wish to install the ice maker in a free-standing mode rather than enclosed, it is necessary to attach the two metallic stability brackets that can be found packed inside the ice storage bin. Keeping the machine tilted to the right, but not more than 45˚, attach one bracket to the center of the underside of the ice maker with two screws (supplied). See illustration below. Set the unit back on its four feet, then tilt it forward in order to screw in the second bracket on the underside of the unit opposite the first bracket. Level the ice maker. This operation will stabilize it for free-standing operation.

LOCATION REQUIREMENTS

This ice maker should be installed by qualified personnel.

NOTICE

1. Before setting the ice maker inside a cabinet, connect the water supply pipe correctly. Untie the drain hose, insert it into the drain, and connect the power supply line.
2. Do not kink or pinch the power supply line between the ice maker and wall or cabinet.

Installation Clearance

• To ensure proper ventilation for your ice maker, the front of the unit must be completely unobstructed
• When installing the ice maker under a counter, follow the recommended spacing dimensions shown Allow at least 6” (150 mm) clearance at rear, and 1” (25 mm) at the sides and at the top for proper air circulation The installation should allow the ice maker to be pulled forward for servicing if necessary
• Choose a well-ventilated area with temperatures above 40oF (4 4oC) and below 110oF (43 3 OC ) This unit MUST be installed in an area protected from the elements, such as wind, rain, water spray or drips
• The unit should not be located next to ovens, grills or other sources of high heat
• Installation of the ice maker requires a cold water supply inlet of 3/8” (9 5 mm) soft copper tubing with a shut off valve
• The ice maker requires a continuous water supply with a minimum pressure of 15 Spig and a static pressure not to exceed 80 Spig The temperature of the water feeding into the ice maker should be between 40oF(4•4oC) and 90oF (32oC) for proper operation

Ice Maker Installation

• IT IS STRONGLY RECOMMENDED TO USE A WATER FILTER. A FILTER, IF IT IS OF THE PROPER TYPE, CAN REMOVE TASTE AND ODORS AS WELL AS PARTICLES AND CAN PROLONG THE LIFE OF THE MACHINE.
• The ice maker must be installed with all electrical and water connections in accordance with state and local codes
• The unit should be located on a firm and level surface. It is important for the ice maker to be level in order to work properly If needed, you can adjust the height of the ice maker by rotating the feet See the Leveling the Ice Maker section

ELECTRICAL REQUIREMENTS

Before you move your ice maker into its final location, it is important to make sure you have the proper electrical connection A standard electrical supply (115 VAC, 60 Hz, 15 A), properly grounded in accordance with the National Electrical Code and local codes and ordinances, is required The ice maker should always be plugged into its own individual electrical outlet It is  recommended that a separate circuit, serving only your ice maker, be provided Use receptacles that cannot be turned off by a switch or pull chain The fuse (or circuit breaker) size should be 15 amperes

Recommended grounding method

For your personal safety, this appliance must be grounded It is equipped with a power supply cord having a 3-prong grounding plug To minimize possible shock hazard, the cord must be plugged into a mating 3-pronged and grounding-type wall receptacle, grounded in accordance with the National Electrical Code and local codes and ordinances If a mating wall receptacle is not available, it is the personal responsibility of the customer to have a properly grounded, 3-prong wall receptacle installed by a qualified electrician.

LEVELING THE ICE MAKER

Once the ice cube machine is set in its enclosure, if the base is not level, you can adjust the feet by rotating the under block (see below) until the machine is level .It is important for the ice maker to be leveled, or water may not flow properly through the evaporator (ice mold) Ice production will be lower than normal, and operation will be noisy.

Adjust the height of the under block of the adjustable foot, rotating it to the right (counter- clockwise) to lower that side of the ice maker Turning the under block to the left (clockwise) raises that side of the ice maker.

Water Supply

The water supply should be ready at the point of installation The water supply pressure should be a minimum of 15 Spig with a static pressure not more than 80 Spig (A wall outlet directly behind the ice maker will make installation easier ) We strongly recommended the use of a water filter. A filter, if it is of the proper type, can remove taste and odors as well as particles and can prolong the life of the machine.

IMPORTANT

1. All installations must be in accordance with local plumbing code requirements Professional installation is recommended
2. Water inlet fitting: 3/8” FPT (Female Pipe Thread); drain line connection: 1/2” FPT.
3. Make certain you have a suitable water supply hose and suitable drain hose, and that the hoses are not pinched, kinked or damaged during installation
4. Check for leaks after connection

Tools required: 3/8” open-end wrench, Phillips screwdriver

Connecting the water line:

1. Turn off main water supply
2. Find a water supply line near the installation location The distance should be less than the length of the water supply hose
3. A shut-off valve must be installed to the main water supply
4.  Connect the water supply hose to tap and water inlet valve. Tighten firmly by hand, then one-half turn with wrench
5. Connect one water drain hose to ice maker drain line connection. Tighten firmly by hand, then one-half turn with wrench
6. Turn on main water supply and tap Check for water supply connection leaks Tighten every connection (including connections at the water inlet).

INSTALLATION TYPES

This ice cube machine has been designed to be enclosed (as under a cabinet) It can also be free- standing (using the supplied stability brackets) or built-in (sealed to the floor). In every case, there must be adequate air space around the unit for ventilation purposes

Enclosed Installation

An enclosed installation will allow you to install the ice cube machine under a counter or in a kitchen cabinet provided the required clearance space around the ice maker is respected You must follow the stated instructions for

1. a Electrical requirements
2. b Water supply

Free-standing Installation

The ice cube machine can be installed to be free-standing in any place you desire provided you have access to a water supply This installation has the same requirements as an enclosed installation, plus you must also follow the stated instructions for Installing the Stability Brackets

Built-in Installation

If this method of installation is chosen, it will still be necessary to allow adequate ventilation space around the unit The following additional items must be observed

1. Place the ice cube machine in front of the installation location Raise the machine and place it on the floor or on a platform depending on your installation requirements.
2. The water supply line must be plumbed before connecting to the ice maker
3. Turn on the main water supply and tap Check for water supply connection leaks Tighten every connection (including connections at the water inlet)
4. If the electrical outlet for the ice maker is behind the cabinet, plug in the ice maker
5. Push the ice maker into position
6. Seal all around the cabinet to the floor with an approved caulking compound.

Operation

FINAL CHECK LIST BEFORE OPERATION

1. Have all packing materials and tape been removed from the interior and exterior of the ice maker?
2. Did you clean the ice storage bin?
3. Have the installation instructions been followed, including connecting the machine to water and electricity?
4. Has the machine been leveled?
5. Is the ice cube machine in a site where the ambient temperature is between 40 º F(4.4º C) and 110 º F (43.3º C) and the water temperature between 40 º F (4 .4º C) and 90 º F (32º C) all year round?
6. Has the water supply pressure been checked to ensure a minimum of 15 psig with a static pressure not to exceed 80 Spig?
7. Is there a clearance of at least 6” (150 mm) at the rear, 1” (25 mm) at the top and sides for proper air circulation?
8. Has the power supply voltage been checked or tested against the nameplate rating? And has proper grounding been installed for the ice cube machine?
9. Is the ice cube machine plugged in ?
10. Have you turned on the main water supply and the tap?
11. Have you checked for leaks at all water supply connections?

OPERATING METHOD

1. Turn on the water tap, letting the water enter the water tank, then press ON/OFF button in front panel to turn on the unit The LCD scree n lights
2. After about 3 minutes, the ice maker will automatically proceed to the ice-making stage, and the sound of flowing water will be heard. The words of “Making ice” displays on the LCD screen.
3. When the batch of ice has been fully formed, ice will automatically fall into the ice storage bin The words of “Harvesting Ice” displays on the screen
4. When the ice storage bin is full, the sheet of cubes will not fall completely and will hold the bin full probe open The machine is in the bin full mode, and the words of “Bin Full” d isplays on the LCD screen The unit stops working
5. The unit starts making ice again automatically approximately 3 minutes after ice cubes are removed As ice is removed, the bin full probe swings back to operating position.

HOW THE MACHINE MAKES ICE

Press the ON/OFF button in front panel to turn on the unit, then the LCD screen lights. After about 3 minutes, the machine will automatically go into the ice-making stage. There are two distinct cycles: Freeze and Harvest. During the Freeze cycle, water flows to the evaporator surface In the Harvest cycle, the ice is released and water enters the machine A complete cycle can take 15 to 40 minutes, depending on ambient temperature and operating conditions.

• Freeze: During the Freeze cycle the compressor is pumping refrigerant, the fan motor is blowing air, and the water pump is circulating water. When the batch of ice has been fully formed, the ice maker stops the Freeze cycle and begins the Harvest cycle.
• Harvest: During the Harvest cycle the compressor is still operating, power is supplied to the water purge valve and hot gas valve. The water purge valve opens and allows the water pump to purge the water remaining in the water tank, removing all impurities and sediment. This allows the machine to make clear ice cubes and keep mineral build-up at a minimum.Then the water pump stopped. The hot gas valve opens, diverting hot refrigerant gas into the evaporator. The gas warms the evaporator, causing the cubes to slide as a unit off the evaporator and into the storage bin. The Freeze cycle will restart when all the cubes drop into the bin.

HOW THE MACHINE USES WATER

The ice cube machine begins with a fixed charge of water that is contained in the water tank. As the water flows to the freezing evaporator surface, the water will freeze and stick to the ice cube molds. During the ice-making process, fresh water enters the water tank continuously as the water from the trough freezes continuously on the evaporator.

NORMAL SOUNDS

Your new ice cube machine may make sounds that are unfamiliar to you. Most of the new sounds are normal. Hard surfaces like the floor and walls can amplify the sounds. The following describes the kinds of sounds that might be new to you and what may be causing them.

• Rattling noises may come from the flow of the refrigerant or the water line. Items stored on top of the ice cube machine can also make noises.
• The high-efficiency compressor may make a pulsating or high-pitched sound.
• Running water may make a splashing sound.
• You may hear air being forced over the condenser by the condenser fan.
• During the Harvest cycle, you may hear the sound of ice cubes falling into the ice storage bin.

PREPARING THE ICE CUBE MACHINE FOR LONG STORAGE

If the ice cube machine will not be used for a long time, or it is to be moved to another place, it will be necessary to drain the system of water.

1. Shut off the water supply at the main water source
2. Disconnect the water supply line from the water inlet
3. Shut off the power supply at the main electrical power source
4. Screw off the water tank screw nut and drain out water completely, tighten the nut after finishing. Dry the tank.
5. Remove the ice from the ice storage bin. Dry the bin.
6. Leave the door open to allow for circulation and to prevent mold and mildew.
7. Leave the water supply line and power cord disconnected until ready to reuse.

Cleaning and Maintenance

Periodic cleaning and proper maintenance will ensure efficiency, top performance, and long life. The maintenance intervals listed are based on normal conditions. You may want to shorten the intervals if you have pets or there are other special considerations.

WHAT SHOULDN’T BE DONE

Never keep anything in the ice storage bin other than ice: objects like wine and beer bottles are not only unsanitary, but the labels may slip off and plug up the drain.

WHAT SHOULD BE KEPT CLEAN

There are 4 things to keep clean:

1. The exterior
2. The interior
3. Water distribution tube
4. The ice-making system cleaning

EXTERIOR CLEANING

The door and cabinet may be cleaned with a mild detergent and warm water solution such as 1 OZ of dishwashing liquid mixed with 2 gallons of warm water. Do not use solvent-based or abrasive cleaners. Use a soft sponge and  rinse with clean water. Wipe with a soft clean towel to prevent water spotting. Clean stainless steel with a cloth dampened with a mild detergent and warm water solution. Never use an abrasive cleaning agent.

INTERIOR CLEANING

The ice storage bin should be sanitized occasionally. Clean the water tank before the ice cube machine is used for the first time and reused after stopping for an extended period of time. It is usually convenient to sanitize the trough after the ice-making system has been cleaned and the ice storage bin is empty.

1. Disconnect power to the unit.
2. Open the door. Perform steps 4 in preparing the ice cube machine for long storage section to let the water drain out of the water tank.
3. Using a sanitizing solution made of 1 ounce of household bleach and 2 gallons of hot water (95º to 115ºF), wipe  down the water tank and the inside of the ice storage bin with a clean cloth. To clean hard-to-reach corners, apply the sanitizing solution with a spray bottle.
4. Rinse thoroughly with clear water. This completes the routine interior cleaning of the unit.
5. Reconnect the power.
6. The ice scoop should be washed regularly. Wash it just like any other food container.

WATER DISTRIBUTION TUBE CLEANING

When you find that the ice cubes are incompletely formed or the output of ice cubes is low, the water distribution tube may be blocked. Turn off the machine. Unscrew the four screws holding the top panel and remove the panel. You will see the water distribution tube. Rotate the water distribution tube so that the holes in it are facing up . Using a toothpick or similar tool, dredge the holes, then rotate the water distribution tube back to its original position. If the tube is badly blocked, clean it as follows:

1. Shut off the water and power supplies.
2. Disconnect the water hose from the distribution tube.
3. Gently take out the distribution tube.
4. With a brush, clean the tube with a dilute solution of warm water and a mild detergent such as dishwashing liquid. After removing the dirt and lint from the surface, rinse the tube with clean water.
5. Replace the distribution tube.
6. Reconnect the water supply and power supply lines.
7. Re-attach the top panel.

ICE-MAKING SYSTEM CLEANING

Minerals that are removed from water during the freezing cycle will eventually form a hard, scaly deposit in the water system. Cleaning the system regularly helps remove the mineral scale buildup. How often you need to clean the system depends on how hard your water is or how effective your filtration may be. With hard water of 15 to 20  grains/ gallon (4 to 5 grains/liter), you may need to clean the system as often as every 3 months.

1. Press the ON/OFF button to turn off the machine .
2. Remove all ice cubes from the storage bin. If ice is being made, initiate harvest or wait for cycle
3. Keep the ice maker connected to the water supply. Pour 8 oz. of Nickel-Safe Ice Maker Cleaner Solution into the water tank.
4. Press the ON/OFF button to turn on the machine, the LCD screen lights Within 3 minutes, press the CLEAN button The machine will run the automatic Clean mode.
5. The cleaning cycle will continue for 30 minutes unless you press ON/OFF button(you can press the power switch to stop the cleaning cycle any time during the 30 minutes). After cleaning, the LCD screen will display the words of “OFF” The cleaning process stops.
6. The dirty water must be drained out completely. Perform steps 2 and 3 in the Interior Cleaning section.
7. Repeat steps 3 to 6 above three times to rinse the ice-making system completely. NOTE: Do not add Ice Maker Cleaner Solution to the water trough during the rinses.
8. If you want to make ice cubes after cleaning, turn off the power switch, drain off the waste water, then turn on the power switch. The next ice-making cycle will begin.
9. Discard the first batch of ice.

CONDENSER CLEANING

The air-cooled condenser should be vacuumed once or twice per year to remove any lint that may have been drawn into it .

1. Unplug the ice maker or disconnect power
2. Gently pull off the bottom louver
3. Remove dirt and lint from the condenser and the air filter with brush attachment of a vacuum cleaner Use a pointed tool like a toothpick to remove any lint that adheres to the condenser fins.
4. Reassemble the air filter and the bottom louver
5. Plug in the ice maker or reconnect power

Control Panel (located at the left top side of front panel)

You will find the control panel at the left top side of front panel. This control panel offers four pressure sensitive buttons and a LCD display screen.

1. ON/ OFF Button. Powers the ice machine.
2. Bin Full Process: When the words of “Bin Full” display, the ice storage bin is full of ice or something is obstructing the bin full probe. The unit will stop working. when ice cubes are taken out of the ice storage bin, releasing the bin full probe, the words of “Bin Full” will flash for 3 minutes. The unit will then restart and returns to the ice making mode.
3. Making Ice Process: When the words of “Making Ice” display, the unit is working in the Ice Making mode controlled by a temperature probe on the evaporator and a fixed timer.
4. Harvesting Ice Process: When the words of “Harvesting Ice” display, the unit is working in the Ice Harvest mode controlled by a temperature probe on the evaporator and a fixed timer.
5. Clean Button: When this button is pressed, the unit enters the Cleaning mode. the screen will display “Cleaning”. To stop the Cleaning mode, just press the ON/OFF button.
6. Mode Button: Recommended for service technician only. When this button is pressed, the unit can be changed from ice Making mode to Ice Harvest mode or vice versa. You can judge the mode from the display contents on the screen.
7. Water Fill Process: When the words of “Water Fill” display, there are three minutes for water inlet and self-checking. After three minutes, the machine will start to make ice automatically.

OPERATION OF THE CONTROL PANEL

1. When the unit is plugged in, only the word of “OFF” displays on the LCD screen.
2. Press the ON/OFF button, the LCD screen lights. If normal, only the words of “Water Fill” and “3 Min To End” displays on the LCD screen. The ice maker will start to make ice automatically when the words of “3 Min To End” changes to “0 Min To End”.
3. After three minutes, the ice maker will start to make ice automatically. The words of “Making Ice” displays on the LCD screen.
4. When the ice machine runs in ice harvest process, the words of “Harvesting Ice” will display on the LCD screen.
5. When the ice storage bin is full of ice cubes or there is something obstructing the bin full probe, the words of “Bin Full” will display on the LCD screen. The unit stops working.
6. When ice cubes are removed from the ice storage bin, clearing the bin full probe, the machine will judge the status for three minutes. During this period, the LCD screen will display the words of “Bin Full Release” and “3 Min To End”. “Bin Full Release” flashes until the words “3 Min To End” changes to“0 Min To End”. At this time, the ice maker will start to make ice automatically.
7. TO CLEAN THE MACHINE, turn off the machine first, then turn it on.
   • During “Water Fill” process, press the “CLEAN” button, the ice maker will start the cleaning process, the words of “Cleaning”, “Add chemical” and “30 Min To End” display on the LCD screen.
   • At the first one minute, the words of “Add chemical” flash to remind pouring the Ice Maker Cleaner Solution into the water tank until the words of “30 Min To End” changed into “29 Min To End”, the words of “Add chemical” disappear and the water pump runs, the ice maker goes into cleaning process.
   • The ice-making system cleaning cycle will continue until the words of “30 Min To End” changed into “0 Min To End”, the cleaning process stops and the ice machine is in suspend mode.
   • You can press the ON/OFF button to stop the cleaning cycle any time during the cleaning mode.
   • If you want to make ice cubes after cleaning, press the ON/OFF twice, the next ice-making cycle will begin.

Additional Functions

1. Draining Function: press the “Clean” button and hold for 6 seconds, the machine will go into the draining water mode automatically. The words of “Purging Water” appear on the LCD screen. The words disappear after 3 minutes and the draining process stops.
2. Self-checking Function: when the ice maker runs, the control board will check the condenser probe, evaporator probe, high condenser temperature, water shortage, long freeze, long harvest and bin full probe function, if one of them defaults, the exclamation mark will appear and blink on the left bottom corner of the LCD screen. At this time press “ADJUST” button, the cause of default will appear on the LCD screen.
3. Purging cycle interval Optional Function: during “Water Fill” process, press and hold the “CLEAN” button and “ADJUST” button together for at least 3 seconds. The unit will enter the “Purging Optional” process, the words of “Purging Optional” and “20 Cycle” (Note: The cycle number may display other number) appear on the LCD screen. During this period, you can press the “MODE” or “CLEAN” button for the desired purging cycle interval. You can choose any purging cycle interval from 0 to 20. After 10 seconds without any operation, the unit will automatically memorize the current status and return to the previous process.

ICE BRIDGE SIZE ADJUSTMENT GUIDE

1. Press the “ ADJUST” button, the unit will enter the Ice Size Adjustment mode and the words “Ice Adjust” display on the LCD Screen.
2. While in the Ice Size Adjustment mode, press the “Clean” button or the “Mode” button for the desired ice size.

SMALLER ICE SETTING

By pressing the “Clean” button, you can decrease the size of the ice bridge. The words of “-6 Minutes” indicate the  smallest ice size.

LARGER ICE SETTING

By pressing the “Mode” button, you can increase the size of the ice bridge. The words of “+10Minutes” indicate the largest ice size. After 10 seconds without any operation or press the “ADJUST” button again, the unit will automatically memorize the current state and return to the previous mode.

Troubleshooting

BEFORE CALLING FOR SERVICE

If the unit appears to be malfunctioning, read through the OPERATION section of this manual first. If the problem persists, check the Troubleshooting Guide on the following page The problem may be something very simple that can be solved without a service call.

Troubleshooting Guide

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UniFlow Maxx Ice UIM225NB Ice Cube Machine-FAQs