User Manual Model: MDT3 and MDT4
Contents
1. Water Level Sensor The water level sensor may not shut the ice machine off when the reservoir goes dry if there is a film of mineral scale on the probe tip 1 Remove the top panel 2 Remove the reservoir cover 3 Pull the water level probe up and out of the reservoir 4 Carefully wipe the tip of the probe with a clean cloth Ice machine cleaner may be needed Note The tip is made of glass Clean Water Level Sensor Water 5 Reinsert the water level sensor in the reservoir Reservoir 6 Replace the reservoir cover and the top panel Coupling Use the grease zerk on the side of the coupling to add grease once per year Bearing and Water Seal The top bearing should be checked every time the machine is cleaned Unscrew the cap and check A visual check can determine if corrosion is occurring If worn or corroded have the bearings and water seal changed Also check for water leaks from the bottom of the evaporator If there is a leak the bearings and water seal must be replaced The gear reducer will also need to be checked for water infiltration April 2010 Page 11 MDT3F amp MDT4F User Manual Dispense Area Sanitation 1 The spout may be removed by taking out the two mounting screws Wash and sanitize it 2 The sink grill may be removed for washing and sanitizing 3 The sink should be flushed with hot water and wiped clean with sanitizer 4 The splash panel requires special attention to cl2. in the bin When the user holds a container in front of the glass sensor and below the ice chute the dispense drive motor rotates the vane and the ice There is a slot in the base of the bin located just above the vend spout and glass filler lever When the ice moves over that slot some of the ice on the bottom of the bin falls thru the slot into the chute and fills the container ON OFF Control Flaked ice is produced by the ice maker until ice builds up between the electric eyes When the electric eyes can no longer see each other they send a signal to the control board to shut the machine off The refrigeration compressor stops but the auger drive motor will continue to operate for about 2 minutes to clear the evaporator of ice Water Control Because water is such an important requirement for making ice a water level sensor has been placed in the reservoir If the water supply to the machine should fail the water level sensor will send a signal to the control board to shut down the machine Refrigeration The refrigeration system uses a hermetic compressor specifically designed for R 134a forced draft air cooled condenser capillary tube and vertical flaked ice evaporator Inside the evaporator is a slowly rotating auger The auger is supported by bearings at each end and there is a face type water seal above the bottom bearing The auger is driven by a 1 10 HP direct drive gear reducer The auger drive motor h
3. to the wall and spaces the base of the dispenser away from the wall 4 Bottom Fittings Cover Fastened to the bottom wall bracket to hide the utility connections 5 Junction box cover Installation Check building wall for the strength required to support a machine of this weight and size Note that if at least 6 of space is not left above the machine cleaning and most service of the machine will require removal of the machine from the wall mounts All utilities are to be routed thru the base The back panel is not used when the machine is hung from the wall Top Case Hanger Bracket 1 Remove back panel 2 Place top hanger bracket on the inside of the frame and position it in line with the pre punched holes in the frame 3 Fasten the bracket to the frame with four 20 screws from the kit Top Wall Bracket 1 Hold the bracket on the wall where it will be mounted 2 Mark the positions of the holes in the bracket onto the wall 3 If needed drill pilot holes for the fasteners 4 Secure the bracket to the wall with fasteners of sufficient strength to hold up the dispenser Connect all internal utilities Route tubes and wires out the bottom Junction box cover Install on the junction box Bottom Wall Bracket 1 Lift up and hang the dispenser from the top wall bracket 2 Position the bottom wall bracket so that the molding on the dispenser base bottoms in the cha
4. A ee at se Si pry ta me ee vera wel SRY A a ere ace Page 12 Service Diagnosis oer fone See k sa Rt hm VaR Gee Ge cay ge oy an cmt SP tae Cae gi O ser et tae Gee em oe Man pat Ue pee oper sums oa Page 13 Service Diagnosis Circuit Board E E owe SY iat co Sa aes Ge va a Samy es a Gy ce ome ol UY coy 77a Page 14 Note this symbol when it appears A WARNING It marks a possible hazard November 2008 Page 1 MDT3F amp MDT4F User Manual Specifications Scotsman ice machines like the MDT3F or MDTA4F are designed to be installed indoors in a controlled environment The minimum and maximum operating conditions are e Minimum Air Temperature 50 F e Maximum Air Temperature 100 F e Minimum Water Temperature 40 F e Maximum Water Temperature 100 F e60 Hz voltage may vary between 104 and 126 volts e Water Pressure may vary between 20 and 80 psi Operating the machine outside these conditions constitutes misuse and voids the warranty SIDE EXHAUST 6 00 IN 15 24CM 7 MINIMUM CLEARENCE BOTTOM SIDE AIR INTAKE 6 00 IN L 15 24 CM MINIMUM CLEARENCE Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance They meet or exceed the standards of UL NSF and CUL Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way including
5. NAL CODES This Unit MUST BE GROUNDED Electrical Power JUNCTION BOX INTERNAL Remove Back Panel To Expose Junction Box November 2008 Page 4 MDT3F amp MDT4F User Manual For The Plumber Drains The dispenser requires a gravity drain The pitch on the drain tubes must be at least Y4 inch fall per foot of horizontal run On long horizontal runs a vent at the back of the cabinet will improve draining and is recommended There are two drains to connect A sink drain a ID plastic tube and the bin drain a ID plastic tube Install rigid tubing between the machine and the building drain Route the drains separately to the building drain Water supply FOLLOW ALL APPLICABLE LOCAL STATE AND NATIONAL CODES Connect cold potable water to the machine The inlet water fitting is a 1 4 male flare located on a wall inside the cabinet A hand valve near the Water Inlet Fitting 1 4 location is Male Flare recommended A water filter is also a good idea Follow all local codes Strainer or Filter Water Supply Bin and Reservoir Overflow Drains Sink Drain o o oa Building Drain Typical November 2008 Page 5 MDT3F amp MDT4F User Manual Wall Mount Kit KWB4 Contents 1 Top Case Hanger Bracket Attaches to the frame of the dispenser 2 Top Wall Bracket Mounts to the wall and engages the top case hanger bracket to support the dispenser 3 Bottom Wall Bracket Mounts
6. Scotsman Installation and User s Manual for Ice Maker Dispenser Models MDT3F12 and MDT4F12 MDT3F amp MDT4F User Manual Introduction Purpose of this manual To provide detailed The MDT3F and MDT4F are combination ice installation and operation instructions to give makers and dispensers The refrigeration system insights into how the machine works and to list is air cooled using R 134a as a refrigerant The possible causes for basic problems control system uses electric eyes as a bin control and a water level sensor as the water safety control As ice is made it fills a plastic storage bin When ice is needed a motor rotates a stainless steel vane inside the storage bin and sweeps the ice into the spout New Table of Contents Specifications a 9a os ae PRIMAL a A GEE Gare Way 4s Ge NTRS Gem ay TNT A ue xe ge on ae ce See oe Page 2 To The Installer E A e E a a Te Page 3 For The Electrician CC A Page 4 For The Plumber A A A A A O io dee tac Page 5 Wall Mount Kit KWB4 RR A ee ay A Page 6 Final Check List 8 Initial Start Up O A E mw Sem ah 7 ay Ss wee Tea Wess a ae BY AG came A he E Page 7 User Operation A Or IN E E A E A AE A oe Page 8 Mechanical Operation ara a ao e ARAS AA Rd AA AAA E a Page 9 Maintenance se a a A TA E AO We we Gor Wir SEE oe gt car ETE Page 10 Inspection k w aR Sete ets ee BS ee eter Ss Oe A ae gt ESS RT Hee ee tap a Sy ee er Ge we Page 11 Dispense Area Sanitation ies Si Wee cae ee et ene
7. as a speed operated switch on it that will keep the compressor from operating if the auger motor is not turning at full speed Water System Water flows from the building supply to the reservoir and to the electric solenoid valve Water from the reservoir is used to make ice Water the flows thru the solenoid is dispensed The bin sink and reservoir overflow all have drains Ice Vending Dispensing takes place when the touch free sensor s infrared beam bounces back to the sensor from a container placed directly in front of the sensor and under the ice chute When the beam is reflected back it signals the circuit board to connect power to the dispense drive motor and ice is then moved over the slot in the base of the bin where it falls by gravity thru the chute into the container If the Water switch is On water is also dispensed at the same time Dispensing continues until the beam is no longer reflected back to the sensor Touch Free Sensor November 2008 Page 9 MDT3F amp MDT4F User Manual Maintenance Although the ice in this dispenser is completely untouched the water and ice vending systems will need to be periodically sanitized and de mineralized The air cooled condenser will also need to be kept clean Schedule the sanitation cleaning and de mineralization on a regular basis to keep the ice clean and the machine operating efficiently Twice per year is the standard recommendation Sanitatio
8. ean it ePush and release the Cleaning Switch located to the left of the ice spout This disables the Touch Free Sensor so the splash panel may be cleaned without vending ice or water eWash the splash panel and wipe with sanitizer eRe push the clean switch or allow 2 minutes to pass for the Touch Free system to reset Push Touch Free Sensor Disable Button Before Wiping Splash Panel Pour Hot Water Into Sink Regularly To Keep Drain November 2008 Page 12 MDT3F amp MDT4F User Manual Service Diagnosis PROBLEM POSSIBLE CAUSE PROBABLE CORRECTION No ice is dispensed No ice in bin due to eNo electrical power Check restore power Recheck ce needs vs machine eOveruse i capacity eWater supply turned off Check water filter hand valve float valve eBin controls dirty Check amp clean bin control electric eyes e Water sensor dirty Check amp clean water sensor eControl system malfunction Check control system e Auger drive motor open Check auger drive motor e Centrifugal switch open Check centrifugal switch e Auger does not turn Check coupling amp gear reducer No refrigeration Check refrigeration system Ice in bin but will not dispense Drive motor does not turn Check replace vend system Check that cleaning switch has been released Check replace dispense motor eVend system does not work e Dispense motor open e Dispense outp
9. emove the left side panel 3 Remove the control box cover November 2008 Page 14 SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills IL 60061 800 533 6006 www scotsman ice com 17 3281 01 Revised April 2010
10. fter about 15 seconds the machine should start 7 Let the machine operate listen for any unusual noises If needed reposition tubing amp panels to eliminate vibration After the unit has been operating for about 10 minutes there should be enough ice in the bin to test the dispense system 8 Using a container place in in front of the glass sensor and below the ice chute See that ice is dispensed the bin drive motor continues to run as long as the container is in place 9 Move the water switch rocker switch on the front panel to ON Place the container in front of the glass sensor and under the ice chute Both water and ice should be dispensed 10 Pour water into the sink and check that the drain does not leak but drains the water rapidly 11 Explain to the user the maintenance requirements and operation of the machine 12 Fill out the Warranty Registration and Customer Evaluation form Mail it to Scotsman 13 Leave the service manual with the owner user and explain who should be called if service is needed April 2010 Page 7 MDT3F amp MDT4F User Manual User Operation The MDT3F and the MDT4F are automatic ice vending machines All either requires is cool air clean water and an adequate supply of electrical power To Vend Ice Place a container in front of the Touch Free sensor and below the ice spout Hold it there until the container is full of ice Do NOT overfill the container or a build up
11. in top interior spout ice vane and bin bottom with the sanitizing solution Pour some down the bin drain 17 Reassemble the bin bottom vane and bin cover 18 Wash the sink area with the sanitizing solution and pour sanitizing solution down the sink drain 19 Replace all panels and reconnect water and electrical power Air Cooled Condenser 1 Disconnect electrical power 2 Remove top panel 3 Remove right and left side panels 4 Use pressurized air to blow the lint from the outside of the condenser in towards the fan motor A vacuum cleaner hose placed on near the fan motor should pick up most of the dust Check for interior dirt If needed use coil cleaner to de grease the condenser 5 Replace all panels and reconnect electrical power November 2008 Page 10 MDT3F amp MDT4F User Manual Inspection Photo Electric Eyes The photo electric eyes used to see the ice build up in the top of the bin cover must be clean to get a good look at the ice If clouded by mineral scale the eyes will cause the ice machine to shut off and stay off To clean the photo electric eyes 1 Remove the top panel I 2 Pull both of the photo electric eyes out of their Te rubber grommets 2 lt 2 3 Wash both eyes with a clean cloth dipped in Scotsman Ice Machine Scale Remover Clean Photo Electric 4 Wash the eyes off with clean water Eyes 5 Replace the eyes in the grommets 6 Replace the top panel
12. n and Cleaning Water System This ice machine requires periodic sanitation and de mineralization 1 Vend all ice from the machine 2 Remove top and right side panels 3 Unplug or disconnect electrical power 4 Shut off water supply 5 Drain reservoir 6 Mix 8 ounces of Scotsman Ice Machine Scale Remover and 3 quarts of hot 95 F 115 F potable water Scotsman Ice Machine Cleaner contains acids AWARNING These compounds may cause burns If swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water Keep out of the reach of children 7 Pour the water into the reservoir 8 Wait 15 minutes for the cleaner to dissolve the minerals inside the evaporator 9 Plug in the machine or reconnect electrical power 10 As the machine operates pour in the balance of the cleaning solution 11 Reconnect water supply operate the machine for 15 more minutes then switch it off 12 Repeat steps 3 11 except substitute a locally approved sanitizing solution for the cleaner A possible sanitizing solution may be obtained by mixing 1 ounce of household bleach with 2 gallons of clean warm 95 F 115 F water 13 Unplug or disconnect electrical power 14 Remove bin top pour in warm potable water to melt out any ice 15 Pull out the vane and bin bottom from the bin 16 Thoroughly wash the bin s interior b
13. nd any options planned for This machine is air cooled and blows air out the lower left side of the cabinet Do not install the machine where the side to side air flow might be blocked Cooling Air Flow Cooling Air Flow N A Warm Air Exhaust The machine will require electrical power water and a drain Follow all local codes Rough in the utilities before placing the machine into position see For The Electrician and For The Plumber Water Quality The quality of the water supplied to the machine will directly affect the purity of the ice and the reliability of the machine While the condition of the water supplied to a building is normally out of the control of the user water can be treated at the point of use There are two major types of water impurities suspended solids those that are carried along with the water and may be filtered out and dissolved solids those that are part of the water and have to be treated A water filter is always a good idea but does require regular maintenance to change the cartridge In some water conditions water treatment may be required Generally this means a polyphosphate feeder of some kind Water softeners are not recommended General Installation Place the machine in its final location Remove the top right and left side panels 1 Remove two screws at the bottom of the front panel 2 Disconnect wires from water switch 3 Remove
14. nnel of the wall bracket 3 Secure the bracket to the wall Bottom Fitting Cover 1 Connect electrical power water inlet bin drain and sink drain of the dispenser thru the bottom of the case 2 Secure bottom fitting cover to the bottom wall bracket with the four sheet metal screws provided in this kit Top Case Bracket eA LEA A 16 00 Wall Brackets 26 34 Bottom Cover Secure With Screws November 2008 Page 6 MDT3F amp MDT4F User Manual Final Check List amp Initial Start Up 1 Is the machine located indoors where the temperature limitations are not exceeded 2 Is there at least 6 clearance on both sides of the cabinet for adequate air flow 3 Is the water supply adequate and has a shut off valve been installed 4 Is the cabinet level 5 Have all of the electrical and drain connections been made Initial Start Up 1 Remove 2 screws at the bottom of the front panel 2 Disconnect wires at water switch 3 Remove screws and the top and side panels 4 Open the water supply shut off valve 5 Watch the water fill the reservoir Check that water flows in and fills the reservoir near to the mark molded into the side of the reservoir Check that the float shuts off the water flow when the tank is full Check for leaks Tighten hose clamps as needed 6 Plug the unit in or switch on the electrical power A
15. of ice in the sink or a back up of ice in the spout will occur To Vend Ice and Water Switch the Water Switch to ON Place a container in front of the Touch Free sensor and below the ice spout Water and ice will be dispensed into the container below the spout Note The water is NOT cooled it is the same temperature as the building supply water Daily Maintenance Pour hot water into the sink to flush out any debris or build up Wipe the cabinet off wash the sink and grill to keep minerals from accumulating Caution Unless the touch free sensor is de activated by pushing the Cleaning Switch in ice and or water may be dispensed during cleaning The Cleaning Switch is a button located to the left of the ice chute that temporarily shuts off the sensor for cleanup of the splash panel Pushing the button in will disable the sensor for 2 minutes pushing the button in again will return the sensor to normal operation Water Switch Glass Sensor Touch Free Disable Switch November 2008 Page 8 MDT3F amp MDT4F User Manual Mechanical Operation General The machine makes stores and dispenses ice It also dispenses water The ice making portion of the machine produces flaked ice at about 32 F The ice falls thru a chute into the dispensing bin Above the cylindrical bin is a dispense drive motor and electric eyes The drive motor is connected to an ice vane
16. the use of parts and of other components not specifically approved by Scotsman Scotsman reserves the right to make design changes and or improvements at any time Specifications and designs are subject to change without notice 23 63 IN 6 00 IN 60 11 CM 15 24 CM 2 21 IN 5 61 CM RIGHT SIDE FLARE WATER 127310 INLET o 32 32 CM 7 03 IN D 17 86 CM 3 97 IN b A 10 08 CM 19 72 IN 50 09 CM 2 06 IN 23 89 IN 5 22CM 77 OPTIONAL WATER INLET DRAINS amp ELECTRICAL 60 67 CM 4 57 IN 1 14 00 IN 35 56 CM E o G Litem A43IN E OM az Specifications Model Number Dimensions Basic Refrigerant Min Max Fuse W xD xH Electrical Charge Circuit Size R134a Ampacity MDT4FA 1A 14 x 23 x 34 115 60 1 14 oz 15 1 20 MDT4FA 6A 14 x 23 x 34 230 50 1 14 oz 7 5 15 MDT3FA 1A 14 x 23 x 34 1115 60 1 12 oz 9 4 15 MDT3FA 6A 14 x 23 x 34 230 50 1 12 oz 5 3 15 November 2008 Page 2 MDT3F amp MDT4F User Manual To The Installer A professional installation of any product is critical to the long term satisfaction of the user The ice maker dispenser is designed to be installed either on a counter or using a wall hanging kit hung from a wall Determine the location from the anticipated use a
17. two screws at the front of the top panel Lift the top panel and remove it 4 Remove screws from the sides top and bottom of the side panels and from the splash panel 5 Pull the side panels back and off the machine Plumbing connections may be made thru holes in the back of the cabinet or thru the base e Route the sink drain to the back of the cabinet Route the bin drain to the back panel e Route the electrical power cord from the junction box inside the cabinet thru the back panel e Route the inlet water line thru the back panel or base to the flare fitting inside the cabinet After all plumbing and internal wiring has been done replace the side and back panels Level the unit front to back and left to right The machine does not require sealing to the counter due to the gasket on the base April 2010 Page 3 MDT3F amp MDT4F User Manual For The Electrician Electrical connections Check the nameplate for voltage and current requirements An electrical cord is not supplied Connect the MDT3F or MDT4F to a separate electrical circuit Wiring to the machine must conform to all codes A licensed electrician may be required in some situations Remove the back panel to make the electrical connection The electrical connection is made on the terminal strip in the junction box inside the machine Replace the back panel when the electrical connections are complete FOLLOW ALL APPLICABLE LOCAL STATE AND NATIO
18. ut shaft broken Check replace output shaft Ice in bin motor turns vane Ice jammed up Advise owner manager to instruct users e Users held cup against dispense spout and jammed unit eBin bottom slot not over spout Check bin bottom position e Ice will not slide down bin wall Check bin interior wall for rough bin out of round texture or out of round Check water level check suction e Wet ice in the bin from high and discharge pressures water level or high suction pressure November 2008 Page 13 MDT3F amp MDT4F User Manual Service Diagnosis Circuit Board ao qee NADELEN SIA ire pa pa nani a op pa po pa e a e o o o o a 3 o a 73 LL on ew Explanation of Indicator Light Position On Name and Meaning of Board Light or Reset On at all times when the master switch is ON and machine is 1 Power connected to electrical power ON Normal On when ice level is low unit making ice 2 Bin Empty ON Needs Ice Normal 6 minute off delay start To prevent short cycling the 3 Off Timer machine will not restart after any shut off except power to the ON Unit cycling off board until 6 minutes have passed On when water level is low in the reservoir 4 No Water ON Trouble To check the electrical system first check the lights on the circuit board 1 Remove the top panel 2 R
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