Engineered for Ease UnderCounter Ice Machines Installation, Operation and Maintenance Manual , Caution Original Document Part Number: 040005890 Rev 05 12/19 Read this instruction before operating this equipment.
Safety Notices Safety Notices Read these precautions to prevent personal injury: • • • • • nWarning Follow these precautions to prevent personal injury during installation of this equipment: Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death. Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty.
n Warning Follow these refrigeration system requirements during installation, use or repair of this equipment. • • • • • • This equipment contains high voltage electricity and refrigerant charge. Installation and repairs are to be performed by properly trained technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure. The technician must also be certified in proper refrigerant handling and servicing procedures.
Table of Contents Safety Notices Safety Notices.................................................................................................................... 3 Section 1 General Information Model Numbers................................................................................................................. 7 Shipping Weight............................................................................................................... 7 How to read a model number..............................
Table of Contents (continued) Section 4 Maintenance Interior Cleaning and Sanitizing........................................................................................ 17 General........................................................................................................................... 17 Cleaning and Sanitizing Procedures.................................................................................. 17 Remove Parts for Cleaning........................................................
Section 1 General Information Model Numbers HOW TO READ A MODEL NUMBER This manual covers the following models: Self-Contained Air-Cooled UDF0140A UYF0140A URF0140A UDP0140A UYP0140A UDF0190A UDP0190A UYF0190A UYP0190A UDF0240A UDP0240A UYF0240A UYP0240A UDF0310A UYF0310A URF0310A UDP0310A UYP0310A Shipping Weight Model Family U0140 U0190 U0240 U0310 Self-Contained Water-Cooled Nominal production @70/50 0140-Produces~140#/day 0190-Produces~190#/day Ice machine 0240-Produces~240#/day series U-Undercoun
General Information Section 1 Accessories Warranty Contact your Manitowoc distributor for these optional accessories: For warranty information visit: BIN CASTER Replaces standard legs. • Warranty Coverage Information • Warranty Registration ARCTIC PURE WATER FILTER SYSTEM Engineered specifically for Manitowoc ice machines, Arctic Pure water filters are an efficient, dependable, and affordable method of inhibiting scale formation, filtering sediment, and removing chlorine taste and odor.
Section 2 Installation Location of Ice Machine The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. Series Ice Machine U140 U190 U240 U310 Ice Machine Heat of Rejection* Air Conditioning** Peak 2400 2900 2200 2600 2800 3300 3800 6000 • The location must be indoors. • The location must be free of airborne and other contaminants. • The air temperature must be at least 40°F (4°C), but must not exceed 110°F (43°C).
Installation Section 2 Electrical Service VOLTAGE The maximum allowable voltage variation is ±10% of the rated voltage on the ice machine model/serial number plate at start-up (when the electrical load is highest). The 115/1/60 ice machines are factory pre-wired with an 8' power cord and NEMA 5-15P-plug configuration. The 208-230/1/60 and 230/50/1 ice machines are factory pre-wired with an 8' power cord only, no plug is supplied.
Section 2 Installation Water Service/Drains WATER SUPPLY Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, remove chlorine, and improve taste and clarity. DRAIN CONNECTIONS Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and storage bin: • Drain lines must have a 1.5 inch drop per 5 feet of run (2.5 cm per meter) and must not create traps.
Installation Section 2 Before Starting the Ice Machine Water/Drain Connections All Manitowoc ice machines are factory-operated and, normally, new installations do not require any adjustment. A. Potable Water Inlet B. Potable Water Outlet C. Bin Drain Starting the ice machine and completing the Operational Checks are the responsibilities of the owner and operator. Adjustments and maintenance procedures outlined in this manual are not covered by the warranty. D.
Section 3 Operation Touch Pad Features DELAY The touch pad offers a series of pressure sensitive buttons to control ice machine operation and provide operational status. Pressing the Delay button will start a delay period. The ice machine will finish the freeze and harvest cycle and then start the delay period.
Operation Section 3 Ice Making Sequence of Operation Harvest Cycle NOTE: The On/Off button must be depressed and the ice damper must be closed before the ice machine will start. Any remaining water is purged down the drain as refrigerant gas warms the evaporator. When the evaporator warms, the sheet of cubes slides off the evaporator and into the storage bin. If all cubes fall clear of the ice damper, the ice machine starts another freeze cycle.
Section 3 Operation SAFETY LIMITS Safety limits are stored and indicated by the control board. The number of cycles required to stop the ice machine varies for each safety limit. Safety limits can be reset by pressing the On/Off button and starting a new ice making cycle. A safety limit is indicated by an energized Service Light on the touch pad. Refer to Section 5 if you receive a safety limit indication.
Operation Section 3 THIS PAGE INTENTIONALLY LEFT BLANK 16 Part Number:040005890 Rev 05 12/19
Section 4 Maintenance Interior Cleaning and Sanitizing GENERAL Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires more frequent cleaning and sanitizing, consult a qualified service company to test the water quality and recommend appropriate water treatment. The ice machine must be taken apart for cleaning and sanitizing. Step 1 Press the On/Off button after ice falls from the evaporator at the end of a harvest cycle.
Maintenance Section 4 Step 5 Mix a solution of cleaner and warm water. Depending on the amount of mineral buildup, a larger quantity of solution may be required. Use the ratio in the table below to mix enough solution to thoroughly clean all parts. Solution Type Water Cleaner 1 gal. (4 l) Mixed with 16 oz (500 ml) cleaner ,Caution Do not immerse electrical connectors or motors for any components in water, cleaner, or sanitizer solutions.
Section 4 Maintenance REMOVE PARTS FOR CLEANING Thumbscrew & Thermistor Bracket A. Remove the ice thickness and harvest float switch. Pull forward on the bottom of the bracket until clear of the tab, then slide bracket upward to remove the bracket and float switch as an assembly. NOTE: At this point, the component can easily be cleaned. If complete removal is desired, follow the wires to the bulkhead grommet (exit point) in the back wall.
Maintenance Section 4 PREVENTATIVE MAINTENANCE CLEANING This cleaning procedure can be performed between the biannual cleaning and sanitizing cycles. This procedure does not require removing the ice from the bin. CLEANING THE CONDENSER A dirty condenser restricts airflow, resulting in excessively high operating temperatures. This reduces ice production and shortens component life. Step 1 Press the On/Off button after ice falls from the evaporator at the end of a Harvest cycle.
Section 5 Troubleshooting Checklist If a problem arises during operation of your ice machine, follow the checklist below before calling service. Routine adjustments and maintenance procedures are not covered by the warranty. Problem To Correct Replace the fuse/reset the breaker/turn on the main switch/plug power cord into receptacle. Ice machine does not operate. Ice machine needs to be turned on. Press the On/Off button to start ice making. Damper in open position (down).
Troubleshooting Section 5 Problem Low ice capacity. Possible Cause The condenser is dirty. High air temperature around ice machine (aircooled models). Inadequate clearance around the ice machine. Objects stacked around ice machine, blocking airflow to condenser (air-cooled models) Hot incoming water. To Correct Clean the condenser. Air temperature must not exceed 110°F (43°C). Provide adequate clearance. Remove items blocking airflow. Connect the ice machine to a cold water supply.
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