Manitowoc SN12, SN20 Model Nugget Ice Machines Installation, Use & Care Manual This manual is updated as new information and models are released. Visit our website for the latest manual. www.manitowocice.
Safety Notices Read These Before Proceeding: As you work on Manitowoc equipment, be sure to pay close attention to the safety notices in this manual. Disregarding the notices may lead to serious injury and/ or damage to the equipment. Throughout this manual, you will see the following types of safety notices: ! Warning Text in a Warning box alerts you to a potential personal injury situation. Be sure to read the Warning statement before proceeding, and work carefully.
Table of Contents Section 1 General Information Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model/Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flake/Chiplet/Nugget Commercial Ice Machine Warranty . . . . . . . . . . . . . . . .
Table of Contents (continued) THIS PAGE INTENTIONALLY LEFT BLANK 2 Part Number 000005544 12/09
Section 1 General Information Section 1 General Information Model Numbers Accessories This manual covers the following models: MANITOWOC CLEANER AND SANITIZER Touchless Sensor Activated Lever Activated SN012AT SN012A Self Contained Air-Cooled Self Contained Air-Cooled Nugget Ice Machine Nugget Ice Machine SN020A SN020AT Self Contained Air-Cooled Self Contained Air-Cooled Nugget Ice Machine Nugget Ice Machine Manitowoc Ice Machine Cleaner and Sanitizer are available in convenient 16 oz.
General Information Section 1 Model/Serial Number Location These numbers are required when requesting information from your local Manitowoc distributor, service representative, or Manitowoc Foodservice. Record the model and serial number of your ice machine in the space provided below. The model and serial number are listed on the OWNER WARRANTY REGISTRATION CARD. They are also listed on the MODEL/SERIAL NUMBER DECAL affixed to the ice machine head section and condensing unit.
Section 1 General Information Flake/Chiplet/Nugget Commercial Ice Machine Warranty Manitowoc Ice, Inc.
General Information Section 1 Residential Ice Machine Limited Warranty WHAT DOES THIS LIMITED WARRANTY COVER? Subject to the exclusions and limitations below, ManitowocFoodservice.
Section 2 Installation Instructions Section 2 Installation Instructions Ice Machine Dimensions These instructions are provided to assist the qualified installer. Check your local Yellow Pages for the name of the nearest Manitowoc distributor, or call Manitowoc Foodservice for information regarding start-up services. • The location must not be near heat-generating equipment or in direct sunlight.
Installation Instructions Electrical Service Section 2 Water Supply and Drains POTABLE WATER SUPPLY ! Warning All wiring must conform to local, state and national codes. Local water conditions may require treatment of the water to inhibit scale formation, filter sediment, and remove chlorine odor and taste. VOLTAGE Important If you are installing a Manitowoc water filter system, refer to the Installation Instructions supplied with the filter system for ice making water inlet connections.
Section 2 Installation Instructions WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS ! Caution Plumbing must conform to state and local codes. Location Water Temperature Water Pressure Ice Machine Fitting Ice Making Water Inlet 45°F (6°C) Min. 90°F (32.2°C) Max. 20 psi (137.9 kPA) Min. 80 psi (551.5 kPA) Max.
Installation Instructions Section 2 Before Starting the Ice Machine Installation Checklist X Checklist Item Is the Ice Machine level? Has all of the internal packing been removed? Have all of the electrical and water connections been made? Has the supply voltage been tested and checked against the rating on the nameplate? Is there proper clearance around the ice machine for air circulation? Has the ice machine been installed where ambient temperatures will remain in the range of 45° 110°F (7° - 43.
Section 3 Ice Machine Operation Section 3 Ice Machine Operation Component Identification ICE MACHINE HEAD SECTION ICE WIPER ICE CHUTE COVER HALL EFFECT SWITCH BIN COVER WATER RESERVOIR WATER RESERVOIR ICE STRAINER GEAR MOTOR BIN SELECTOR SWITCH BLUE LIGHT CONTROL BOARD ICE CHUTE DAMPER ICE CHUTE BIN COVER ICE CHUTE SPOUT THUMBSREWS DISPENSE ARM or TOUCHLESS SENSOR LOCATION ICE WATER ICE / WATER SELECTOR SWITCH OPTIONAL LEGS SCRAP ICE TRAY TOGGLE SWITCH Part Number 000005544 12/09 SCRAP
Ice Machine Operation Section 3 Operational Checks GENERAL Ice Production Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, a newly installed ice machine does not require any adjustment. Allow the ice machine to produce ice for 15 minutes before testing the dispense mechanism. This will insure a sufficient quantity of ice in the bin for dispensing.
Section 3 Ice Machine Operation Sequence of Operation 15 MINUTE TIME DELAY INITIAL STARTUP The 15 minute delay must be expired before the gearmotor or compressor will energize. The delay period starts when: Applying power and/or moving the toggle switch from OFF to ICE will start a 15 minute delay period. This delay period can not be overridden. With the water sensing switch closed (reservoir full of water) the gear motor will energize at the end of the 15 minute time delay.
Ice Machine Operation Section 3 Removal from Service/Winterization GENERAL Special precautions must be taken if the ice machine head section is to be removed from service for an extended period of time or exposed to ambient temperatures of 32°F (0°C) or below. ! Caution If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result. Damage of this nature is not covered by the warranty. Follow the procedure below. 1.
Section 4 Maintenance Section 4 Maintenance Cleaning and Sanitizing GENERAL EXTERIOR CLEANING You are responsible for maintaining the ice machine in accordance with the instructions in this manual. Maintenance procedures are not covered by the warranty. Weekly Clean and sanitize the ice machine every six months for efficient operation.
Maintenance Section 4 Manitowoc’s Cleaning Technology Manitowoc Flake/Nugget Ice Machines include technology that allows the initiation and completion of a cleaning cycle at the flip of a switch. This cycle will permit cleaning of all surfaces that come in contact with the water distribution system. Periodic maintenance must be performed that includes sanitizing the bin and adjacent surface areas, which are not contacted by the water distribution system.
Section 4 Maintenance PREVENTATIVE MAINTENANCE CLEANING PROCEDURE Ice machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to “Sanitizing Procedure” for removal of algae and slime. To initiate a cleaning cycle using Manitowoc’s Cleaning Technology use the following procedure. Step 1 To start a cleaning cycle, move the toggle switch to the CLEAN position. Water will flow through the water dump valve and down the drain.
Maintenance Section 4 PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/NUGGET ICE MACHINES Ice machines that are heavily scaled or have not been cleaned on a regular basis will need to run this procedure. Failure to do so may result in binding of the auger as the lime scale releases from the auger and evaporator barrel. Step 1 Remove panels and set the ICE/OFF/CLEAN toggle switch to the OFF position. Step 2 Remove all ice from the bin. Step 3 Turn off the water supply to the ice machine.
Section 4 Maintenance CLEANING PROCEDURE Ice machines that are heavily scaled or have not been cleaned on a regular basis will need to run the Heavily Scaled Cleaning Procedure before this one. Failure to do so may result in binding of the auger as the lime scale releases from the auger and evaporator barrel. Ice machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to the “Sanitizing Procedure” for removal of algae and slime.
Maintenance Section 4 SANITIZING PROCEDURE Ice machine sanitizer is used to remove algae or slime. It is not used to remove lime scale or other mineral deposits. Refer to the “Cleaning Procedure” for removal of lime scale or other mineral deposits. NOTE: Sanitizing must be performed on adjacent surface areas not contacted by the water distribution system. Always perform Disassembly for Cleaning and Sanitizing Procedure and a Cleaning Procedure before sanitizing the ice machine.
Section 4 Maintenance Component Disassembly For Cleaning/Sanitizing The ice machine must be disassembled cleaned and sanitized every six months. ! Caution 6. Remove front cover. A. Lift up on front cover. B. Pull forward to disengage keyhole slots. Do not mix Cleaner and Sanitizer solutions together. It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. 1. Turn off water supply to ice machine.
Maintenance 8. Lift out ice damper. Section 4 11. Loosen ice chute hose clamp. 12. Disconnect ice chute drain. Ice Chute Hose Clamp Ice Chute Drain 9. Lift out ice strainer ramp. 13. Lift up on ice chute to remove. The ice chute must be removed before the bin cover can be removed. 10. Turn ice wiper counterclockwise to remove. 14. The ice chute can be cleaned in place. If complete removal is desired use a phillips screwdriver to remove the Hall Effect Switch assembly from the ice chute.
Section 4 Maintenance 15. Remove three thumbscrews, then remove bin cover. 18. Remove ice dispensing wheel by lifting straight out. Remove Thumbscrews 16. Remove agitator bar and ice breaker on SN020. NOTE: Bar must be reassembled by inserting front edge into the paddle wheel, then lowering the back edge (rounded 90 angle) to prevent water leakage into the compressor compartment. Water Reservoir Cover Removal Push up on cover to snap off.
Maintenance Section 4 21. While components are soaking clean all foodzone surfaces of the bin. Rinse all areas thoroughly with clean water. Do Not Allow Solutions To Drain Through Center Hole CLEANING THE CONDENSER ! Warning Disconnect electric power to the ice machine and the remote condenser at the electric service switch before cleaning the condenser. Air-Cooled Condenser A dirty condenser restricts airflow, resulting in excessively high operating temperatures.
Section 5 Before Calling For Service Section 5 Before Calling For Service Checklist If a problem arises during operation of your ice machine, follow the checklist below before calling for service. Routine adjustments and maintenance procedures are not covered by the warranty. Problem Ice machine does not operate Blue light on dispenser spout is off Blue light on dispenser spout is on Gear Motor runs but compressor will not start.
Before Calling For Service Section 5 Safeguard Feature In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will stop when conditions arise that would cause major component failure. GENERAL The ice machine control board has safety features to protect the ice machine from severe failures. The ice machine will stop when conditions arise that would cause major component failure.
Section 5 Before Calling For Service SafeGuard Modes NO WATER During the Freeze cycle if the water sensing switch opens or remains open for more than 20 continuous seconds, 1. The ice machine will de-energize the compressor and gear motor immediately 2. Continuously flash the control board water OK light 3. Initiate a 15 minute Standby Mode After the 15 minute standby the ice machine will check the status of the water level sensor.
Before Calling For Service Section 5 NO ICE PRODUCTION The damper door (HES1) fails to open and close at least once during the first 8 minutes of compressor run time or The damper door fails to open and close at least once every 90 seconds during the freeze cycle 1. The ice machine will de-energize the compressor and gear motor immediately 2. Continuously flash the HES1 control board light 3. Initiate a 60 minute Standby Mode NO ICE PRODUCTION: The ice machine will start another 60 minute Standby Mode.
EC DECLARATION OF CONFORMITY We hereby declare that our products, ice machines and Multiplex refrigeration equipment comply with all the essential requirements of the listed EC - directives. Manufacturer: European Distributor: Manitowoc Ice, Inc. 2110 S. 26th Street, P.O. Box 1720 Manitowoc, Wisconsin 54221-1720 USA Representative of Manitowoc Ice. Inc.: Engineering Manager, (Printed name) Representative of European Distributor: Signature Model and Serial No.
© 2009 Manitowoc Continuing product improvements may necessitate change of specifications without notice. Part Number 000005544 12/09 Manitowoc Foodservice 2110 South 26th Street, P.O. Box 1720 Manitowoc, WI 54221-1720, USA Ph: 920-682-0161 Fax: 920-683-7589 Visit us online at: www.manitowoc.
