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Model 315I (UC Ice Maker)

1. Figure 5 3 Door Gasket Removal 3757320 Revision B August 2005 Component Access Removal Model 3151 UC Ice Maker Door Removal The door is held in place by screws that pass through the top and bottom hinges into the face of the door To remove the door the door panel will need to be removed first With the door closed extract the door mounting screws from the top and bottom hinges two each hinge and pull the door from the unit See Figure 5 4 NOTE To remove the door with the hinges see Hinge Removal below Hinge Removal Two screws at each hinge secure the hinges to the unit To remove the hinges open them fully and extract the hinge mounting screws See Figure 5 5 Bin Thermostat Control Knob Removal The bin thermostat control knob fits over the shaft of the bin thermostat To remove the knob pull it straight for ward off of the control shaft See Figure 5 6 Control Panel Assembly Removal The control panel assembly has a flange at the bottom that sits behind the lower cabinet face plate Adhered to the top rear of the control panel are two halves of dual lock fastener pads similar to velcro which mate up with the other halves of the dual lock fastener pads adhered to the bottom flanges of the upper cabinet face plate To remove the control panel assembly the bin thermo stat control knob needs to be removed first Then pull the t
2. ila Note The unit must be leveled prior to installation gt lt 1 8 1 30m gt There are four leveler legs on a model 3151 one at WATER each corner To level the unit turn the leveler legs INLET SHUT OFF counterclockwise to raise the unit or clockwise to lower VALVE it See Figure 2 3 FILTER 24 60 9 LOCATE DRAIN WITHIN 2 DIA AREA 23 BACK FROM FRONT OF UNIT ee ore 151 4 38 7 MIN A UP TOP VIEW A NOTE All UP ess eee i i i T T ist mast Figure 2 3 Unit Leveling local Installation Instructions codes Model 3151 Gravity Drain Model 1 Place ice maker in front of installation location Level unit as described above cm MIN WATER 2 Remove door with hinges kickplate lower stainless WATER FILTER steel face plate control knob and control panel TT bu SANE 3 Route inlet water line through back of compressor Cp area to front of unit keeping tubing towards left side essa 4 Route tube from drain waste receptacle through back of compressor area to front of unit 1 4 keeping tubing towards left side 1865 pus 9 NOTE If using a long horizontal run more than 5 FRONT VIEW feet the drain should be vented at back of unit 5 Plug power cord into wall outlet 6 Push maker into installation position 7 Cut inlet water line to required length NOTE It is recommended to flush
3. 7 gt Bottom Cover Figure 2 11 Hinge Cover Installation Model 3151 UC Ice Maker Initial Start Up When the installation is complete and all electrical and water hook ups have been checked be sure to remove all tape and packing materials before initial start up Follow the instructions below for initial start up 1 Pull the control knob from the ice machine control shaft See Figure 2 12 2 Remove the control face plate by pulling the top for ward to disengage the velcro strips then lift up See Figure 2 12 3 Remove the inner control access panel by extract ing the three screws then lower the panel slightly and pull forward See Figure 2 12 4 Locate the cycle timer and rotate the shaft clock wise until the cam is in the harvest cycle position switch button out See Figure 2 13 5 Turn the water supply ON 6 Make sure there is power to the unit then place the ice machine control knob on the control shaft and turn the ice machine control knob to the NORMAL position pointing straight down See Figure 2 14 7 Allow the unit to run for approximately one hour then check the size of the ice cubes NOTE To confirm proper cube size see Cube Size Control Adjustment in the Maintenance Cleaning amp Adjustment section of this manual If cube size is incor rect follow the Cube Size Control Adjustment proce dures on that page 8 After adjusting the cube s
4. C water Using a clean soft cloth wipe down the interior of the storage bin with the sanitizing solution See Figure 4 1 and pour some of the solution down the bin drain Rinse the interior of the storage bin with clean hot water and allow it to air dry before restarting the unit NOTE It is recommended that cleaning sanitizing the ice storage bin be performed immediately after the ice making system has been cleaned See next page Sanitize ice storage bin with solution of 1 ounce bleach 2 gallons hot water and clean soft cloth Figure 4 1 Cleaning Sanitizing Ice Storage Bin 3757320 Revision B August 2005 CAUTION Never keep anything in the ice storage bin that is not ice Objects such beverage containers may be unsanitary and their labels might fall off which could plug the drain Cleaning the Ice Scoop The ice scoop should be cleaned regularly to keep it sanitary Clean the scoop with dish soap and warm water as you would any other food container Cleaning the Condenser The condenser is located at the right side of the com pressor area behind the kickplate and it looks similar to the radiator on a car To clean the condenser follow the directions below 1 Remove the kickplate by extracting the two mount ing screws one at each side and pull the kickplate down and forward 2 With a brush attachment vacuum the face of the condenser off while
5. EEUU 5 2 CAUTIONS ia 5 2 Exterior 996 5 3 1441542 5 3 Door Panel Mounting 2 5 3 Door Gasket dst cia 5 3 Ip 5 4 FING m 5 4 Bin Thermostat Control 5 4 Control Panel Assembly Inner Control Access Panel Bin Trim Upper Cabinet Face Plate Bin 5 5 Decor Trim 5 5 Lower Cabinet Face 5 6 Hinge Mount Support 5 6 Rear Panel e vti 5 6 Cabinet ertet er 5 6 Components in Bin Area 5 7 Bin Thermostat Bracket seen 5 7 Curtain amp Curtain Stiffener sues 5 7 Cube aie etit e eae ias 5 7 Spray Jet ASSEMDIVY 5 7 O RING amp Spray seen 5 8 Circulating Spray Pump HOSES 5 8 Reservoir Drain Hose 2 2 10 00 000 5 8 O Ring Stainless Steel Drain Nipple 5 8 Components Behind Panels amp Shell 5 9 Inlet Water Valve
6. There are two operational cycles of the icemaker Ice Making Freeze Cycle Harvest Cycle The ice making freeze cycle happens when water from the reservoir is sprayed into the ice cube molds at the bot tom of the evaporator and the water freezes into cubes The harvest cycle is when the ice cubes are released from the cube molds and fresh water enters the reservoir The complete process takes approximately 30 minutes for each batch of ice 1 Freeze Cycle 1 Harvest Cycle 1 Batch of 8 Cubes Ice Making Freeze Cycle During the ice making cycle the compressor pumps refrigerant through the system the condenser fan draws air over the condenser and the circulating spray pump sprays water into the cube molds The refrigerant running through the evaporator absorbs heat from the water being sprayed into the cube molds and the water begins to freeze The heat that the refrigerant absorbs from the water is carried in the refrigerant back to the compressor and then through the condenser where the heat is transferred from the refrigerant to the air being drown over the condenser tubing by the condenser fan This warm air is discharged out through the louvered kickplate When the cube molds become cold enough the ice machine s timer begins to turn When the timer turns far enough it stops the ice making freeze cycle and begins the harvest cycle NOTE The Water System During Ice Making Freeze Cycle The water system initially fills the reser
7. er Before removing the condenser capture the refrigerant from the sealed system Then cut the compressor dis charge line and drier inlet line approximately one inch from the condenser inlet and outlet ports Disconnect the control box from the top of the condenser Disconnect the fan shroud from the back of the con denser and lift the condenser off of the base assembly See Figure 5 32 Component Access Removal Compressor Y b lt lt N Grommet Compressor Bracket Figure 5 31 Compressor Removal Fan Shroud Switch Box Gasket Condenser Figure 5 32 Condenser Removal 3757320 Revision B August 2005 Component Access Removal Model 3151 UC Ice Maker 3757320 Revision B August 2005 5 16 Model 3151 UC Ice Maker Parts Lists SECTION 6 PARTS LISTS amp EXPLODED VIEWS Parts Lists Part A28861023 02386701 03381401 13082801 13093501 A37814001 03381301 02385701 13093601 A37886021 02386601 03381801 Model 3151 UC Ice Maker Description Cabinet Shell Support Hinge Mount Screw 8 32X3 8 Fill 8 Gasket Decor Trim Seal Bin EPS Sheet Face Plate Upper Cabinet Screw 10 24X5 8 Hd 4 Trim Ring Bin Gasket Door Door Hinge Top RH Bottom LH Screw 10 24X1 2 10 3757320 Revision
8. extract the panel mounting screws and pull the panel from the unit See Figure 5 11 Cabinet Shell Removal The cabinet shell is secured to the rest of the unit with screws along the bottom of both sides of the unit screws at the top and bottom of the bin opening and mounting screws for some of the exterior components To remove the cabinet shell the rear panel kickplate control knob control panel assembly inner control access panel door hinges bin trim ring upper cabinet face plate bin seal and lower cabinet face plate must be removed first Then extract the screws at the bot tom and top of the bin opening Extract the screws along the bottom of both sides of the unit and lift the cabinet shell up off of the base frame See Figure 5 11 3757320 Revision B August 2005 5 6 Lower Face Plate Figure 5 10 Lower Cabinet Face Plate Removal Rear Panel Cabinet Shell Panel Mount Supports bo Base Frame Figure 5 11 Hinge Mount Support Bracket Rear Panel amp Cabinet Shell Removal Model 3151 UC Ice Maker Component Access Removal COMPONENTS IN BIN AREA i Bin Thermostat Bracket Removal Push brack The bin thermostat bracket is a hollow cylindrical tube et back which holds the bin thermostat control bulb The brack lift front up et fits into holes one each in the front wall and rear wall pull forward of the bi
9. gt 5 TECHNICAL SERVICE 7 B SUB ZERO i AND FARTS MANUAL Q 2 SS Q SS eS ZS S S SI 5 9 5 E Undercounter Ice Maker e SU m m gt SE SK 5 55 RA 69 2 25 SS Q ES dI 2 I m SI 9 A Q SS SS 5 7 9 DZ SS I QUIS d 9 S K OOOO NINININI NINININI NINININI NINININI NINININI NINININI NINININI NINI NINININI NINININI DSB IVR VR OIRO co c P N m 2 o m m N m A 5 gt Z lt z N e e a gt 2 02 m 2 m 2 lt m c Qj N Revision August 2005 Model 3151 UC Ice Maker General Information SECTION 1 GENERAL INFORMATION 1 1 3757320 Revision August 2005 General Information INTRODUCTION Model 3151 UC Ice Maker This Sub Zero Technical Service and Parts Manual Job Aid Part 3757320 for the Model 315W is a compilation of information provided by the Scotsman Company and has been reprinted by Sub Zero Freezer Company Inc with the permission of the Scotsman Company This manual will provide the most recent service information about the model 3151 This information will enable th
10. High Side Filter Drier Grommet Washer 3 8 Clip 6 7 3757320 Revision B August 2005 Parts Lists Model 3151 UC Ice Maker 3757320 Revision B August 2005 6 8 Model 3151 UC Ice Maker Troubleshooting Guide SECTION 7 TROUBLESHOOTING GUIDE Troubleshooting Guide Model 3151 UC Ice Maker TROUBLESHOOTING GUIDE This section of the manual contains the Troubleshooting Guide which will help the Service Technician troubleshoot a model 3151 How to Use the Troubleshooting Guide The list below indicates how the Troubleshooting Guide is arranged Identify the description of the problem that the unit is experiencing from the list and go to the page indicated To the left of the problem description is a letter Locate that letter in the left column of the Troubleshooting Guide The center column will identify the possible caus es for the problem And the information in the right column will explain what tests to perform in order to determine if what you are checking is the cause and or what action to take to correct the problem Troubleshooting Guide Layout Page Ice machine does not operate i 7 3 Ice machine operates but will make 7 3 C Ice machine operates makes but cubes do not release from mold 7 4 D Ice machine operates makes ice but does not fill bin sss 7 5 Cube too DIG
11. assembly from the bottom by extracting the screws from the base assembly legs will allow easier access to the compres sor Before removing the compressor capture the refriger ant from the sealed system Then disconnect the elec trical leads from the compressor With a a tube cutter cut the suction and discharge lines approximately one inch from compressor ports remove the clips and lift the compressor off of the base assembly See Figure 5 31 Condenser Removal The condenser is attached to the base assembly with screws that pass up through the base into the the bot tom side flanges on the condenser The control box is attached to the top of the condenser with screws that pass through the top side flanges of the condenser into the sides of the control box The condenser fan shroud is attached to the back of the condenser with screws passing through the shroud into the rear side flanges of the condenser A styrofoam gasket is sandwiched between the fan shroud and the condenser to prevent air leaks around the shroud The inlet port of the con denser is attached to the compressor discharge line The condenser outlet leads to the high side filter drier To access the condenser remove the control panel inner access panel upper and lower face plates back panel and unit shell NOTE Separating the top of the base assembly from the bottom by extracting the screws from the base assembly legs will allow easier access to the condens
12. gasket bushing assembly is positioned at the Electrical base of the circulating spray pump motor The circulat ing spray pump is inserted down through a hole in the back of the bin assembly Two screws are inserted down through the flanges at the base of the pump motor then into screw anchors The anchors are inserted into mounting holes on either side of the pump As the screws are tightened down into the anchors the anchors expand at the bottom to hold the pump in posi tion The circulating spray hoses are attached to the pump inside the bin To access the circulating spray pump remove the rear panel Before removing the circulating spray pump disconnect the power to the unit Then disconnect all hoses from Figure 5 22 Circulating Spray Pump Removal the pump inside the ice storage bin Disconnect the electrical leads from the pump motor Remove the pump mounting screws and lift the pump and the gas ket bushing assembly up out of the hole in the back of the storage bin See Figure 5 22 3757320 Revision B August 2005 5 10 Model 3151 UC Ice Maker Component Access Removal Bin Level Control Thermostat Removal Control Box Face Plate The bin level control is mounted to the right side of the control box face plate with screws Two wires are con Bin Level Control nected to the back of the control The control capillary tube is inserted into a plastic sleeve and routed out the back of the control
13. ie 3 2 Refrigeration System sees 3 2 3 3 Electrical System eter eren 3 3 Operational Cycles 3 4 Ice Making Freeze Cycle 2 3 4 Harvest Cycle eet 3 5 What to Expect from the Model 3151 3 6 ao 3 6 rp c 3 6 R n TING 3 6 Page Section 4 Maintenance Cleaning amp Adjustments 4 1 Maintenance 8 Cleaning ii 4 2 The Five Things to Keep 4 2 Cleaning Outside of 4 2 Cleaning amp Sanitizing Ice Storage Bin 4 2 Cleaning Scoop wu 2 4 2 Cleaning 2 4 2 Cleaning Ice Making 4 3 Winterizing the Ice Machine 4 4 Adjustments iii 4 5 Cube Size Control Adjustment 4 5 Bin Level Adjustment 4 6 Harvest Cycle Timer 4 6 Section 5 Component Access and Removal 5 1 Component Access and 5 2 Warnings
14. it separates Now use a tube cutter to Filter Drier cut the drier inlet tube approximately one inch from the drier See Figure 5 28 Figure 5 28 High Side Filter Drier Removal 3757320 Revision B August 2005 Component Access Removal Model 3151 UC Ice Maker Evaporator Assembly Removal The evaporator assembly consists of the evaporator heat exchanger assembly and hot gas line from the gas valve The evaporator cube mold sits inside the top of the reservoir insert The evaporator platen cover is placed over the evaporator and a piece of tape is placed over the cover to keep it in place To access the evaporator assembly remove the control panel inner access panel upper and lower face plates back panel unit shell insulation bag tube retaining clip and evaporator platen cover Before removing the evaporator assembly capture the refrigerant from the sealed system Then use a file to score and separate the capillary tube approximately one inch from the filter drier Use a tube cutter to cut the suction line approximately one inch from the com pressor Cut the hot gas line approximately one inch from the hot gas valve and lift the assembly out of the reservoir insert and off of the back of the bin assembly See Figure 5 29 Hot Gas Valve Removal The inlet of the hot gas valve is attached to a T con nection off of the compressor discharge line The out
15. oie ea 5 9 Harvest Cycle Timer eene 5 9 Terminal Board rotto daa 5 9 Hot Gas Solenoid Coil seen 5 10 Drain Pump Pressure Switch 315IP Only 5 10 3757320 Revision B August 2005 General Information Model 3151 UC Ice Maker Circulating Spray eene 5 10 Bin Level 2 2 1 0 0 00000000000000000 nnne 5 11 Cube Size CONTO Livin 5 11 Reservoir Fill Tube esses 5 12 Drain Pump Assembly 315IP Only 5 12 Condenser Fan Assembly 5 13 5 13 Evaporator Assembly 00000009000 5 14 Hot Gas Valve nnn 5 14 COMPIOSS OF pi 5 15 CONAN Oia essa ade 5 15 Section 6 Parts Lists amp Exploded Views 6 1 Cabinet 6 2 Major Assemblies 6 3 Condensing sia ea aaa 6 4 Reservoir saren eee n oaa aeu na Ra Ra FER E en dpa 6 5 Donee YR 6 6 GOMPIOSSOM ives iii 6 7 Section 7 Troubleshooting Guide 7 1 Troubleshooting Guide 7 2 How to Use the Troubleshoot
16. the spinner The stem of the jet base passes down through the a notch in the cube chute a hole in the reservoir and an O ring then is threaded into the spray bar assembly tubing Reservoir To remove the nozzle and access the spinner unscrew the nozzle counterclockwise off of the jet base To remove the jet base or the spray jet assembly use a 5 8 wrench to unscrew the stem of the jet base from e the spray bar assembly tubing See Figure 5 14 A Assembly gt Cube Chute Figure 5 14 Cube Chute amp Spray Jet Assy Removal 5 7 43757320 Revision August 2005 Component Access Removal Model 3151 UC Ice Maker O Ring and Spray Bar Assembly Removal The spray bar is a copper tubing assembly with one inlet port and two outlet ports The inlet fits inside the circulating spray pump discharge tube An O ring is positioned at the top of each spray bar outlet port The jet base stems pass down through the reservoir wall and the O rings and then screw into the outlet ports sandwiching the O rings which seal the connection NOTE The use of a mirror will help in the following removal procedures To remove an O ring extract the appropriate jet base and pull the O ring from the top of the spray bar tubing To remove the spray bar assembly extract both spray jet assemblies or jet bases and remove the O rings With a pliers depress the ends of the hose clamp at the spr
17. 21310 13060900 18877621 03153101 A37732001 A28921001 Description Spacer Nut Screw Bushing Gasket 14 1 2 Compressor Complete Screw 4 Top Base Plate Bottom Base Plate Model 3151 UC Ice Maker Parts Lists RESERVOIR Item Part Description Item Part Description 1 02247921 Curtain 8 13061708 O Ring 2 A24155001 Curtain Stiffener 9 02270401 Spray Bar Assy 3 03140416 Screw 10 05059301 SS Nipple 4 02184100 Nozzle 11 13061701 O Ring 5 A09543000 Spinner 12 02192301 Bin Insert 6 02184000 Jet Base 13 A22532000 Bin Insert Assy 7 22518000 Cube Chute 6 5 3757320 Revision B August 2005 Parts Lists Model 3151 UC Ice Maker CONTROL BOX 12 Item Part Description Item Part Description 1 A25981001 Terminal board 7 12121312 Bushing 2 03140307 Screw 8 03140317 Screw 3 12198021 Timer and Switch 9 02224206 Spacer 4 11050321 Cube Size Control 10 02224205 Spacer 5 11040721 Bin Level Control 11 03140317 Screw 6 12290721 Water Valve includes fittings 12 12121304 Bushing 12241031 Coil only for above valve 13 03163802 Screw 3757320 Revision B August 2005 6 6 Model 3151 UC Ice Maker Parts Lists COMPRESSOR Item Part 18877621 18877651 18877652 18877654 02349001 18470028 03140708 03160000 Description Compressor Complete Includes all parts listed below Relay Overload Cover
18. AS 2 i i gm i i HOLIMS 3UNSSINA 08 _ _ ONLVINIHOS H H A LINSUIO le 109 6 EET is c j AVIR pl i YOLON O dnd YOLOW GION310S GION370S SV9 10H L Li IVYLNAN 201 201 201 201 201 201 lt e ill c 9 AA QVOTHIAD 1 i a YOLOW n 9 c AVAdS B va LM NA ya 2 3 O E o L ONNAN J e AHH eee S 201 H A 601 ayog M gt op Lana ce om Le C 9 a na ESE JOYINOD 1051409 vaH ia Lan gt 376 3809 L V Pasas e SV9 10H 1 09 51 Li TONS a avanan 9 Hill gt N e LI 0 3 0 O 3757320 Revision B August 2005 9 3 Wiring Diagrams Schematics Model 315I UC Ice Maker 43757320 Revision B August 2005 9 4
19. B August 2005 6 2 Item 02385901 02385902 A37854001 03163803 A37822001 02386602 A37855001 02385801 A37819021 03381701 03141807 A37815001 03381601 02224302 03140407 A37858001 03141908 02270101 03140408 A29102001 03143100 03160801 12163807 A26787001 08066401 02398801 Description Cover Upper Hinge Door RH Cover Upper Hinge Door LH Bracket Panel Mount Top Screw 8 32X3 8 2 Bracket Panel Mount Hinge Top LH Bottom RH Bracket Panel Mount Bottom Knob Bin Thermostat Control Panel Assy Dual Lock Fastener 2 Screw 10 24X1 2 Flat Hd 4 Face Plate Lower Cabinet Screw 8X1 2 Black 2 Kickplate Screw 6 3 Panel Inner Control Access Screw A B Flat Hd 2 Spacer 1 Screw Thread Forming 9 Rear Panel Screw 10 6 Leveler Leg 4 Power Cord Insulation in bag Scoop Filler Kickplate Model 3151 UC Ice Maker Part 02227401 13067401 A34816001 02348920 A36699020 13089901 13067416 13067415 13067415 02177502 02053401 02171900 A30625001 13068700 03140414 03142204 A36930020 02332301 13061713 03139405 12256903 12256902 12256901 02349001 2 Description Platen Cover Tube Requires 37 Bin Thermostat Bracket Evaporator Does NOT Parts Lists MAJOR ASSEMBLIES include accumulator amp tubing Item Part Evaporator As
20. Description 22 22 020000000050000 1 5 Components 1 5 Section 2 Installation Information 2 1 Pre Installation Considerations 2 2 2 2 Water Supply aided mrt ct eet ooi oben 2 2 Water QUalV cti i etna 2 2 aa 2 3 2 3 Possible Need for Unit 22 2 3 Moving the Unit 2 99 9 2 3 Unit DIMON SIONS soii iii 2 3 Pre Installation Specifications Model 3151 2 4 Installation iii 2 4 EA IE 2 4 Installation Instructions Model 3151 2 4 Pre Installation Specifications Model 315IP 2 5 Installation iss Ue a Abe sli 2 5 Installation Instructions Model 315IP 2 5 Kickplate Grille Adjustment 2 6 Reversing Door Swing i 2 6 Stainless Steel Door Panels 2 7 Door Panel Installation seen 2 7 O O 2 8 90 Door Stop Installation 2 8 Hinge Cover Installation 2 8 Initial Start egies 2 9 Section 3 Theory of Operation 3 1 Operating Systems
21. EZER INC 3151 0000000 JULY 2005 115 60 1 3 6 5 0 oz 30 10 215 n MADISON WI PRODUCT SERVICE 800 222 7820 Lower serial tag on unit tray behind kickplate MODEL NUMBER 3151 SUPPLY VOLTAGE 115 60 1 SERIAL NUMBER 0000000 REFRIGERANT 134a 5 0 07 SUB ZERO d 3757320 Revision B August 2005 General Information Model 3151 UC Ice Maker MODEL DESCRIPTION There are two 3151 models with different drainage configurations the Model 3151 and Model 315IP The model 315115 a gravity drain model that requires a drain tube that is pitched down from the outlet at the back of the cabinet directly to the sanitary sewer drain The model 315IP has a built in drain pump that will pump water to a drain point maximum 10 rise COMPONENTS FEATURES DOOR GASKET CURTAIN 76 o cl PS RESERVOIR MJ BIN THERMOSTAT SENSING TUBE ICE SCOOP Mv CONTROL FACE PLATE 4 CONTROL KNOB KICKPLATE 3757320 Revision B August 2005 1 6 Model 3151 UC Ice Maker Installation Information SECTION 2 INSTALLATION INFORMATION Installation Information Model 3151 UC Ice Maker o PRE INSTALLATION CONSIDERATIONS To properly make and store ice the model 3151 requires access to air potable water 115 volts AC electricity and a drain The ice machine must be installed indoors in a controlled environm
22. H OF CHILDREN To clean the ice making system follow the instructions below 1 Turn ice machine control knob to OFF See Figure 4 3 vr 3 Pour four ounces Figure 4 3 Control Turned OFF 2 Scoop all ice out of storage bin and either discard it or save it in an ice chest or cooler See Figure 4 4 Figure 4 4 Empty Bin of Ice Machine Cleaner part 3119034306 into ice maker water reservoir See Figure 4 5 Figure 4 5 Pour Cleaner into Reservoir Turn ice machine control knob to ON and allow to run for approxi mately two hours four ice making cycles See Figure 4 6 Figure 4 6 Control Turned ON for Two Hours Turn ice machine control knob to OFF then pour hot 95 35 C 115 F 46 C water into ice storage bin to melt ice that has been produced See Figure 4 7 Figure 4 7 Pour Hot Water into Bin Clean bin liner of mineral scale by mixing a small amount of ice machine cleaner with hot water Using a clean soft cloth wipe down bin liner with this solution then rinse with clean hot water Clean sanitize ice storage bin as described earlier Turn ice machine control knob to ON and replace ice removed in step 2 3757320 Revision B August 2005 Maintenance amp Cleaning Model 3151 UC Ice Maker Winterizing the Ice Machine The instructions below are for those unit
23. I et 7 5 F Qubes are too small d ideo ri dr testa Musae d denda qaa golden ie 7 5 Cubes are partially formed ragged edges e 7 5 3757320 Revision B August 2005 7 2 Model 3151 UC Ice Maker Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST ACTION Ice machine does not The ice machine control is turned to Turn ice machine control to ON or operate the OFF position NORMAL position Circuit breaker switch tripped off or Reset circuit breaker replace fuse If it fuse is blown happens again check for electrical short in appliance Ice machine is unplugged Check outlet Plug unit in Loose or disconnected wiring of ice See Wiring Diagrams and Schematics machine section of manual and check for voltage at appropriate points Repair wiring Bin thermostat open a Bin full ice touching thermostat sens ing tube This is normal b Room ambient temperature too low below 50 F 10 C Advise customer c Bin thermostat defective stuck open Replace thermostat Cycle timer contacts open Check replace timer B Ice machine operates No water in reservoir House water supply turned off Turn but will not make ice water supply on Check water supply line for kinks or restrictions If supply line has a filter it may be clogged and or need changing Check screens in water valve for clogs Clean screens or replace valve Check for loose or disconnected wiring
24. Revision B August 2005 Water Quality There is no such thing as pure water All water including potable water supplied by municipalities con tains some impurities Water absorbs impurities from the air as it rains and or as it flows through the the ground Some of the impurities are solid particles referred to as suspended solids and can be removed from the water with a fine particle water filter Other impurities are chemically bonded to the water mole cules referred to as dissolved solids and cannot be fil tered out Ice made by the model 3151 will a lower mineral content than the water it is made from What makes this possible is the fact that anything dissolved in water lowers the water s freezing point Because of this purer water will freeze first in the ice making molds Most of the impurities or minerals will wash into the reservoir where they may form hard deposits known as scale The model 3151 dilutes this concentration of min erals by over filling the reservoir during the harvest cycle with the excess water flowing down the drain with most of the impurities Approximately three quarts of water flow into the unit each cycle Approximately one quart of that rinses the reservoir and goes down the drain carrying the impurities Some impurities will inevitably remain sticking to parts of the ice machine causing malformed ice cubes This build up of mineral scale can shorten the life of
25. Thickness 5 8 Minimum Door Panel Weight 15 16 Maximum Door Panel Installation NOTE For stainless steel panel skip to step 4 1 Place door panel face down on a protected surface making sure to not damage front of panel 2 Position plastic drilling template provided with unit on back of door panel flush with upper edge and side of door panel See Figure 2 8 NOTE The size of the panel shown in Figure 2 8 is just large enough to cover the door Actual door panel sizes may vary depending on design installation varia tions 3 Once proper position for mounting hardware has been located mark hole locations remove drilling template from door panel and drill pilot holes for mounting hardware NOTE The location of the door handle should also be determined at this time It is recommended that the position of the door handle be centered top to bottom and towards the side of the panel opposite the hinges It may be necessary to countersink the handle mount ing holes so the screw heads do not interfere with the panel fitting flush with the door 4 Remove handle side door panel mounting bracket from face of door and attach it to door panel with 8 x 1 2 screws provided with unit See Figure 2 9 5 Install door panel on door by engaging tabs of han dle side bracket with slots in face of door 6 Insert the 8 x 1 2 screws provided with unit through top and
26. all An air gap will likely be required between the ice maker drain tube and the drain waste receptacle A stand pipe with a trap below it would be acceptable for the drain waste receptacle The model has a built in drain pump that will pump water up to a drain point maximum 10 rise NOTE Poor drainage with either model will cause a high rate of ice melting in the ice bin NOTE All plumbing must meet local codes Moving the Unit When the unit is moved into the house or if it needs to be removed from the house for service purposes it rec ommended to use a hand truck or dolly Be sure to position the dolly on the side of the unit and securely tape the door shut so it does not open while transport ing the unit Unit Dimensions 1 8 15 1 8 H 21 3 8 1 29 1 8 33 7 8 minimum 1 1 8 15 1 8 1 4 NOTE This diagram shows front view side view and top view of the model 315 19 3 4 Though the unit is 15 wide there must be a minimum of 1 8 clearance on each side of the unit Be sure to reference the Pre Installation Specifications on the following pages 3757320 Revision B August 2005 Installation Information Model 3151 UC Ice Maker o PRE INSTALLATION SPECIFICATIONS INSTALLATION Model 3151 Gravity Drain Model Leveling Model 3151 amp 315IP
27. ation position es 8 Cut inlet water line to required length oca codes NOTE It is recommended to flush the inlet water line ai at this time by turning water supply on and letting the i water drain into a bucket 333 4 85 r em 9 Place flare nut onto inlet water line then flare end DRAIN TUBE of tube 10 Attach flare nut to water valve inlet ES DES 11 Turn water supply on and check for leaks 12 Switch unit on and pour a couple of quarts of water into ice storage bin The pump should start up and pump water out Check for leaks 13 Replace all parts removed in step 2 WATER 151 4 FILTER 38 7 Mi Securing the Unit Model 3151 amp 3151 FRONT VIEW Once the icemaker is installed secure the unit to the cabinet by inserting two 8 x 1 2 flat head screws sup plied with the unit through the holes in the flange of each hinge See Figure 2 4 Low ice LEVEL CONTROL Flat Head Screws Figure 2 4 Securing Unit to Cabinet 2 5 3757320 Revision B August 2005 Installation Information Model 3151 UC Ice Maker Kickplate Grille Adjustment The Kickplate Grille can be adjusted up or down to complete the built in design To adjust the grille loosen the two mounting screws and move the kickplate grille up or down to the desired location then retighten the screws See Figure 2 5 Adjus
28. ay bar inlet and pull the spray bar from the the circu lating spray pump discharge tube See Figure 5 15 Circulating Spray Pump Hose Removal There are three hoses connected to the circulating spray pump nipples The bottom hose is the pump inlet hose leading from the reservoir bottom nipple The second hose up is the spray discharge hose leading to the spray bar assembly The top hose on the pump leads to the top center reservoir nipple The purpose of the top discharge hose is to bypass the spray discharge hose if it were to become clogged or air locked NOTE The use of a mirror will help in the following removal procedures To remove a pump hose depress the ends of the hose clamp on the hose and pull the hose off of the nipples and or spray bar assembly See Figure 5 15 Reservoir Drain Hose Removal The reservoir drain hose fits between the top right reservoir nipple and the ice bin drain fitting NOTE The use of a mirror will help in the following removal procedures To remove the drain hose pull it off of the top right reservoir nipple and the drain fitting See Figure 5 16 O Ring and Stainless Steel Drain Nipple Removal The stainless steel drain nipple is inserted through the back of the top right reservoir nipple up to the nub on the nipple An O ring is then placed over the stainless nipple inside the reservoir NOTE The use of a mirror will help in the following removal procedures To remove the stainless stee
29. bottom panel mounting brackets into panel then snug but do not tighten screws 7 Close door and align door panel with surrounding cabinetry then open door and tighten panel mount ing screws Installation Information CAUTION When the reveal on the hinge side of the door panel is less than 1 4 use caution when closing the door as severe finger pinching may occur Flush with Top and Side of Panel Figure 2 8 Door Panel Drilling Template amp Panel Right Hand Door Panel Left Hand Door Panel Figure 2 9 Holes Drilled with Handle Side Bracket 3757320 Revision B August 2005 Installation Information Model 3151 UC Ice Maker Side Panels Side panels for a model 3151 must be securely fastened to adjacent cabinets or to the floor and wall NOTE Side panels should never be attached to the appliance If side panels are fastened to the floor or wall the use of L brackets is recommended hardware not included with the unit For installation and possible service pur poses the area that an L bracket will sit on the floor should be routed out so the bracket sits flush with the floor 90 Degree Door Stop Installation Certain installations may require the door of the model 3151 to stop at 90 instead of the full 115 A 90 door stop pin is supplied with the unit To install the 90 door stop pin follow the instructio
30. box up through a grommet in the base assembly up the back of the bin assembly and into the back of the cylindrical bin thermostat bracket To access the bin level control remove the control panel inner access panel and back panel Before removing the bin level control disconnect the power to the unit Then extract the control box face plate mounting screw and pull the face plate forward Extract the control mounting screws Disconnect the electrical leads from the control At the back of the unit pull the control capillary tube from the thermostat brack et then pull the capillary tube with the sleave from the grommet in the base assembly At the front of the unit pull the control body capillary tube and sleeve forward out of the control box See Figure 5 23 A Ng S Control Capillary Tube NI Figure 5 23 Bin Level Control Removal Cube Size Control Evap Thermostat Removal The cube size control is mounted to the left side of the control box face plate with screws Three wires are connected to the back of the control The control capil lary tube is routed out the back of the control box up through a grommet in the base assembly up the back of the bin assembly then inserted into a tube attached to the evaporator To access the cube size control remove the control panel inner access panel upper and lower face plates back panel unit shell insulation bag tube r
31. customer e Check for water leak at reservoir Repair or replace parts f Check for torn or mis positioned cur tain causing water leak into bin Reposition or replace curtain Check replace control See Cleaning the Ice Making System instructions in Maintenance Cleaning and Adjustment section of manual 7 5 3757320 Revision August 2005 Troubleshooting Guide Model 3151 UC Ice Maker 3757320 Revision B August 2005 7 6 Model 3151 UC Ice Maker Technical Data SECTION 8 TECHNICAL DATA 8 1 3757320 Revision B August 2005 Technical Data Model 3151 UC Ice Maker BIN CAPACITY AND ICE PRODUCTION 26 lbs 18 30 Ibs Bin Storage Capacity Ice Production 24 Hours WATER VALVE FLOW RATE SEALED SYSTEM INFORMATION Refrigerant Charge 134a Approximate Low Side Pressure at End of Freeze Cycle 1 5 psi Approximate High Side Pressure at End of Freeze Cycle 125 150 psi ELECTRICAL INFORMATION Unit Average Running Amperage N 3 N 4 amps Compressor Horse Power 1 8 hp Compressor LRA Locked Rotor Amps 18 5 amps 11 13 ohms 2 4 ohms 6 9 watts 2069 ohms 3 watts 4800 ohms 3 watts 480 ohms 15 watts 960 ohms 180 watts 80 ohms Drain Pump Watts Resistance 150 watts 96 ohms Cube Size Control Cut in Cut out Temps NORMAL setting 6 F 14 C 12 F 11 C Compressor Start Winding Resistance Compressor Run Winding Res
32. e service technician to diagnose malfunctions perform necessary repairs and return a model 3151 appliance to proper operational status The service technician should read the complete instructions contained in this manual before initiating any repairs on a model 3151 IMPORTANT SAFETY INFORMATION Below are Product Safety Labels used in this manual The Signal Words used are WARNING or CAUTION When reviewing this manual please note these differ ent Product Safety Labels placed at the beginning of certain sections of this manual You must follow the instructions given in the boxes of the Product Safety Labels in order to avoid personal injury and or product damage The sample Product Safety Labels below illustrate the precautions that should be taken when the signal word is observed A WARNING INDICATES THAT HAZARDOUS OR UNSAFE PRACTICES COULD RESULT IN SEVERE PERSON AL INJURY OR DEATH CAUTION Indicates that hazardous or unsafe practices could result in minor personal injury and or product damage and or property damage In addition please pay attention to the signal word NOTE which highlights information that is especially important for the topic being covered TECHNICAL ASSISTANCE If you should have any questions regarding the 315W Series and or this manual please contact Sub Zero Freezer Company Inc ATTN Service Department Box 44988 Madison WI 53744 4988 Customer Service a
33. e to bottom left hinge mounting holes and insert two hinge mounting screws through hinge into mounting holes and tight en 7 Attach door to hinges with door mounting screws utilizing left hand door mounting holes NOTE Do not flip door Figure 2 7 Component Removal for Door Swing Reversal 8 Extract two screws which secure upper door panel mount bracket to top right of door then reattach bracket to top left of door utilizing left hand mount ing holes See Figure 2 7 9 Attach new hinge cover top hinge LH to top of door using the two mounting screws removed in step 2 above 10 Open and close door to check for proper operation 43757320 Revision B August 2005 2 6 Model 3151 UC Ice Maker Stainless Steel Door Panels Stainless steel door panels are available from local Sub Zero distributors dealers There are two sizes e 15 W x 30 3 8 x 3 4 T part FP315SS e 17 3 4 W x 30 3 8 x 3 4 T FP315SS 18 These panels can be installed as left hand or right hand swing and are equipped with stainless steel handles Custom Door Panel Specifications The door panel specifications listed below are for units installed in a standard 15 1 4 Wide x 33 3 4 High rough opening A minimum of 1 8 reveal should be allowed around the edge of the panel along with a 4 toe space Door Panel Width 15 Door Panel Height aes 30 3 8 Door Panel
34. ent Air The model 3151 uses a fan to take in room air through the front right side of the kickplate grille and discharge warm air out the left side of the kickplate grille See Figure 2 1 Airflow through the kickplate grille must never be obstructed Doing so will cause a decrease in performance and proficiency and possible damage to the ice machine The minimum air temperature the ice machine will oper ate in is 50 F 10 C and the maximum air temperature is 100 F 38 C Cool Air In Warm Air Out Figure 2 1 Condenser Air Flow Water Supply The model 3151 requires a continuous supply of potable water at no less than 20 p s i g of flowing pressure Static water pressure should not exceed 80 p s i g The minimum water temperature that the ice machine will operate with is 40 F 4 C and the maximum water temperature 100 F 38 C The roughed in water supply line should be a 1 4 O D copper tube connected to the house supply An easily accessible shut off valve should be placed between the supply and the appliance The shut off valve should not be behind the unit NOTE Self piercing valves should never be used as they are prone to clogging with minerals and sediment Regular saddle valves are available from local Sub Zero distributors dealers part 4200880 A line filter is required when the water supply has a high mineral content NOTE All plumbing must meet local codes 3757320
35. er fan motor Replace if defective Check operation of hot gas valve Replace valve and drier if valve is defec tive a Check for loose or disconnected wiring to compressor electricals Repair bad wiring b Check operation of overload and relay If defective replace a If power is at compressor and com pressor electricals are good but com pressor will not run replace compres sor and drier b Inspect sealed system for leaks restrictions or inefficient compressor by observing frost patterns and feel tubing for irregular temperatures Repair or replace components as needed See Cleaning the Ice Making System instructions in Maintenance Cleaning and Adjustment section of manual Lengthen harvest time setting at cycle timer if too short a Check for loose or disconnected wiring to hot gas valve Repair bad wiring d Check operation of hot gas valve it may be stuck closed Replace valve and drier if valve is defective Check operation of cube size control Replace control if defective NOTE Cube size control will not close if sealed system is low on freon Check sealed system too 3757320 Revision B August 2005 Model 3151 UC Ice Maker Troubleshooting Guide PROBLEM POSSIBLE CAUSE TEST ACTION D Ice machine operates makes ice but does not fill bin E Cubes are too big F Cubes are too small possibly white at bottom G Cubes are partially formed ra
36. etaining clip and evaporator platen cover Before removing the cube size control disconnect the power to the unit Then extract the control box face plate mounting screw and pull the face plate forward Extract the control mounting screws Disconnect the electrical leads from the control At the back of the unit pull the control capillary tube from the tube on the evap orator then pull the capillary tube from the grommet in the base assembly At the front of the unit pull the con trol body and capillary tube forward out of the control Figure 5 24 Cube Size Control Removal box See Figure 5 24 3757320 Revision B August 2005 Component Access Removal Reservoir Fill Tube Assembly Removal The reservoir fill tube assembly is attached to the water valve outlet port The tube is routed to the rear of the base assembly up through a grommet in the base assembly up the back of the bin assembly then hooked over the back edge of the evaporator To access the reservoir fill tube assembly remove the control panel inner access panel upper and lower face plates back panel unit shell insulation bag tube retaining clip and evaporator platen cover Begin removing the reservoir fill tube assembly by dis connecting it from the water valve outlet Then pull the tube from the grommet in the base assembly and unhook it from the back edge of the evaporator See Figu
37. gged edges Bin takes 24 36 hours for initial fill High room ambient temperature High water temperature Vents in kickplate obstructed Dirty condenser Bin drain restricted causing rapid melting in bin Cube size control set too cold Cube size control set too warm Not enough water Cube size control stuck closed caus ing rapid ice making cycles Spray jets partially clogged with min eral scale This is normal Heavy frequent ice con sumption by customer will slow the refill process Advise customer Ambient temperatures should not exceed 100 F 38 C Ice machine works best in ambient between 60 F 16 C 90 F 32 C Advise customer Water temperatures should not exceed 100 F 38 C Ice machine works best with 50 F 10 C 80 F 27 C water Advise customer Move clear obstruction Clean condenser Clean out bin drain and or check installa tion for kinks in drain line See Cube Size Control Adjustment instructions in Maintenance Cleaning and Adjustment section of manual See Cube Size Control Adjustment instructions in Maintenance Cleaning and Adjustment section of manual a Check water supply line for kinks or restrictions b If supply line has a filter it may be restricted and or need changing c Check screens in water valve for restrictions Clean screens or replace valve d House supply water pressure too low Pressure must be 20 80 p s i g con stant Advise
38. gle phase 15 amp delayed action fuse or circuit breaker The ice machine should be the only device using that circuit Line Voltage Power Ground Possible Need for Unit Removal Although the model 3151 has been designed to be serv iced in place in some cases it may be necessary to pull the unit out for service For that reason the area under the ice maker must be at the same level as the sur rounding finished floor and any decorative molding at top or bottom must be removable Also there must be a minimum of 1 8 clearance on each side of the unit CAUTION To avoid damage to the finished floor when the unit is installed or if the unit needs to be removed for service purposes the finished floor should be pro tected with appropriate material Figure 2 2 Power Cord amp Wall Outlet A WARNING ELECTRIC SHOCK HAZARD Plug into grounded 3 prong outlet Do not remove ground prong from power cord Do not use a two prong adapter Do not use an extension cord Failure to follow these instructions can result in fire electrical shock or death Drain There are two 3151 models with different drainage con figurations the model 3151 and model 3151 The model 315115 a gravity drain model that requires a drain tube that is pitched down from the outlet at the back of the cabinet directly to the sanitary sewer drain NOTE All horizontal runs of drain line must have a 1 4 per foot f
39. he accumu lator Accumulator Another pressure drop occurs as the cool vaporized refrigerant leaves the evaporator tub ing and enters the larger diameter accumulator tub ing Any liquid or vaporized refrigerant that may remain at this point is converted to gas The capillary tube is wrapped around the accumulator to give up heat to the refrigerant in the accumulator before it enters the suction line Suction Line The cool gas travels through the suc tion line which is also partially wrapped with the capil lary tube As this cool refrigerant gas travels through the suction line it too absorbs heat from the warm liq uid refrigerant traveling through Accumulator Capillary Tube gt _4 Hot Gas Valve the capillary tube This assures that it is a luke warm gas before it enters the compressor where the process begins again NOTE There is an additional component in the ice maker refrig eration system which is used dur ing the harvest cycle this compo nent is called the hot gas valve Its function is described below Evaporator Hot Gas Valve During a har vest cycle the hot gas valve inter rupts the flow of high pressure high heat gas from the compres Sor diverting it past the condens er filter drier and capillary tube directly to the evaporator This high pressure high heat gas closed AY Filter Drier 7 warms the evaporator so that the ice cubes release fr
40. he base into the fan bracket The condenser fan blade fits over the shaft of the motor A flat nut screws onto the motor shaft to hold the blade in place The fan motor electri cal leads pass through a grommet in the side of the control box and plug into the terminal board Fan Blade Fan Motor To access the condenser fan assembly remove the control panel inner access panel upper and lower face plates back panel and unit shell Before removing the condenser fan assembly discon nect the power to the unit Then disconnect the fan motor electrical leads from the terminal board Extract the fan bracket mounting screws from the bottom of the base assembly and lift the fan assembly off of the base plate The fan motor can then be removed from the bracket by extracting the motor mounting screws and the fan blade can be removed from the motor shaft by Figure 5 27 Condenser Fan Removal first removing the flat nut See Figure 5 27 High Side Filter Drier Removal The high side filter drier is attached between the con denser outlet and the capillary tube and is located at the rear of the base assembly To access the high side filter drier remove the back panel Before removing the high side filter drier capture the refrigerant from the sealed system Then use a file to score a line around the capillary tube approximately one inch from the filter drier Fatigue the capillary tube High Side at this point until
41. he ice machine timer continues turning and when it turns far enough it stops the harvest cycle and the freeze cycle begins again NOTE The Water System During Harvest Cycles During the harvest cycle approximately three quarts of water are added to the reservoir over filling the reservoir by approximately one quart The extra quart of water rinses the reservoir and goes down the drain carrying the mineral impurities Circulating Cubes Release Spray Pump Water Inlet From Molds i 29 Oi Circulating i mm gt i Weep Hole Eje Reservoir Hot Gas Valve Drain OPEN H Condenser Fan Inlet Water Valve Compressor y ON Figure 3 5 Harvest Cycle 3 5 3757320 Revision B August 2005 Theory of Operation Model 3151 UC Ice Maker WHAT FROM THE MODEL 3151 The model 3151 will release a batch of eight ice cubes approximately every thirty minutes At the same time the cubes fall into the bin water will be filling the reservoir and carrying the mineral impurities down the drain The cubes tapered cylinders approximately 1 1 4 in diameter at the widest end tapered down to 1 at the other end and are 1 1 8 high See Figure 3 6 When the machine is adjusted properly there should be a 1 4 indentation in the base of the cube The cubes will appear wet when fresh which is normal The cubes
42. hold the gasket in place screws To remove the decor trim gasket the control panel E Decor assembly door top hinge bin trim ring upper cabinet 22 1 Gasket face plate and bin seal must be removed first Then loosen the screws at top and bottom center of the bin opening and pull the gasket from the edge of the cabi net shell See Figure 5 9 Figure 5 9 Decor Trim Gasket Removal 5 5 43757320 Revision August 2005 Component Access Removal Model 3151 UC Ice Maker Lower Cabinet Face Plate Removal The lower cabinet face plate is attached to the cabinet with screws two screws pass through the bottom hinge and the face plate and two screws pass through the face plate on the handle side All four screws then attach to the bottom hinge mount support bracket To remove the lower cabinet face plate the door must be removed first Then extract the two screws on the handle side and pull the face plate forward See Figure 5 10 Hinge Mount Support Bracket Removal The upper and lower hinge mount support brackets are secured to the cabinet shell with screws To remove the hinge mount support brackets the door bin trim ring upper cabinet face plate bin seal and lower cabinet face plate must be removed first Then extract the bracket mounting screws See Figure 5 11 Rear Panel Removal The rear panel is held to the back of the unit with screws To remove the rear panel
43. ifreeze as this is unsanitary and may damage the appliance The antifreeze must be propylene glycol 11 Switch the unit to OFF prop the door open and dis connect power to the ice maker 3757320 Revision B August 2005 O Control Inner Control Access Panel Control Face Plate Knob Figure 4 9 Remove Control Knob Face Plate amp Access Panel Water Valve Ao Harvest Freeze 4 5 Timer Positions Figure 4 11 Rotate Timer Cam to Harvest Position Model 3151 UC Ice Maker Maintenance amp Cleaning ADJUSTMENTS There are three items that may be adjusted Cube Size Harvest Cycle Time and Bin Ice Level NOTE Cube Size and Harvest Cycle Time Adjustments should only be performed by a qualified technician Cube Size Control Adjustment The cube size control should only be adjusted to bring the cubes to the correct shape The actual overall size cannot be adjusted This adjustment should be per formed when the ice machine is in the harvest cycle or within the first ten minutes of the freeze cycle Follow the steps below to adjust the cube size Adjusting i 1 Open the door and remove the control knob the control face plate and the inner control access Figure 4 13 Turn Cube Size Adjustment Screw panel See Figure 4 12 Inner Control Access Panel Knob Face Plate Figu
44. ing Guide 7 2 Troubleshooting Guide Layout 7 2 E EN 7 3 Section 8 Technical Data Tables 8 1 Bin Capacity amp Ice 8 2 Sealed System Information 8 2 Electrical Information 8 2 Section 9 Wiring Diagrams amp Schematics 9 1 Model Sloan 9 2 Model 1 no nnnos 9 3 43757320 Revision August 2005 1 4 Model 3151 UC Ice Maker WARRANTY INFORMATION This page contains a summary of the 2 5 amp 12 Year Warranty that is supplied with every Sub Zero Appliance TWO FIVE amp TWELVE YEAR Warranty Summary Two year TOTAL PRODUCT warranty parts and labor Five Year SEALED SYSTEM warranty parts and labor Sixth through Twelfth year LIMITED SEALED SYS TEM warranty sealed system parts only ONE amp FIVE YEAR Non Residential Warranty Summary Example Office Yacht etc One Year TOTAL PRODUCT warranty parts and labor Five year LIMITED SEALED SYSTEM warranty sealed system parts only ONE amp FIVE YEAR Display Model Home Warranty Summary Display units sold three years after date of manufacture One Year TOTAL PRODUCT warranty parts and labor Five year LIMITED SEALED SYSTEM warranty sealed system par
45. into slots in the face of the door The top and bottom panel mounting brack ets are held to the front of the door with screws The panel is secured to the top and bottom brackets by screws that pass through the brackets into the back of the panel The upper door hinge cover is also mounted to the face of the door with screws To access these components the door panel will need to be removed Begin by opening the door and extract ing the door panel mounting screws from the bottom and top brackets Then slide the panel towards the hinge side to disengage the handle side bracket from the slots in the door With the door panel off remove the top and bottom panel mounting brackets and the upper door hinge cover by extracting their mounting screws from the face of the door Remove the handle side bracket from the back of the door panel by extracting the panel mounting screws See Figure 5 2 Door Gasket Removal The door gasket has a rib on its back side that fits into a channel in the door liner To remove the door gasket open the door and pull the gasket from the door liner See Figure 5 3 y Door Hinge Cover Top 2 2 1 p a fr J 1 Il poor 2 BW 22 LZ _ Bottom O gt Handle Side Bracket ye l Figure 5 2 Panel Mount Hardware amp Upper Door Hinge Cover Removal
46. istance Hot Gas Valve Coil Watts Resistance Cycle Timer Motor Watts Resistance Condenser Fan Motor Watts Resistance Water Valve Coil Watts Resistance Circulating Spray Pump Watts Resistance 3757320 Revision B August 2005 8 2 Model 3151 UC Ice Maker Wiring Diagrams Schematics SECTION 9 WIRING DIAGRAMS AND SCHEMATICS Model 3151 UC Ice Maker 24 Wiring Diagrams Schematics Model 3151 Wiring Diagram and Schematic poe 10 1 02 3718 39N9 601 YOLOM GIONS10S SV9 LOH QION310S 207 207 7 1 i 501 cernita 105633405 5 2 QVOTH3AO INIYUNI best j 201 201 201 YOLOWN AVYdS YOLOW yg ya LL AAA E E E aos E T e moo N lena na ra M 10 1 02 aa era 7 SV9 0 TOROS na NS AN 109100177 7 7 71 13 37 al OILVINIHOS 109 6 qvOT3Ao A M M L NM x b 09 SbL avanan annoauo TVYLNIN 9 2 3757320 Revision B August 2005 o houwoo 777 7 1 18263802 1 noo 01 13 31 Nia wwool q Hoon 5 L 4 cd ona lo Lacus 6 4 o pom ALI
47. ize control and or confirm ing cubes are the correct size replace the inner control access panel the control face plate and the control knob Installation Information Inner Control Access Panel Control Knob Control Face Plate Figure 2 12 Remove Control Knob Face Plate amp Access Panel A Harvest Freeze gt 7 2 Timer Positions Figure 2 13 Rotate Timer Cam to Harvest Position Control Knob Figure 2 14 Control Knob in NORMAL Position 3757320 Revision B August 2005 Installation Information Model 3151 UC Ice Maker 3757320 Revision August 2005 2 10 Model 3151 UC Ice Maker Theory of Operation SECTION 3 THEORY OF OPERATION 3 1 3757320 Revision B August 2005 Theory of Operation Model 3151 UC Ice Maker OPERATING SYSTEMS There are three operating systems in the icemaker Refrigeration System Water System Electrical System Refrigeration System The following components have been listed in the order of refrigerant flow with an explanation of their function as part of the refrigeration system Without delving too deeply into the operating cycles which will be covered later for our purposes the ice making cycle is used See Figure 3 1 Compressor The compressor creates a high side and low side pressure difference in the refrigeration system by c
48. l nipple the drain hose must be removed from the top right reservoir nipple first Then remove the O ring inside the reservoir and pull the stainless steel nipple out through the back of the reservoir top right nipple See Figure 5 16 3757320 Revision B August 2005 Circulating Spray Pump Spray Jet Assembly Spray Bar Assembly Figure 5 16 Drain Hose O Ring amp SS Nipple Removal Model 3151 UC Ice Maker COMPONENTS BEHIND PANELS AND SHELL Inlet Water Valve Removal The inlet water valve is attached to the left side of the control box with screws The inlet and outlet water lines are connected to the valve with compression fittings To access the inlet water valve remove the control panel and inner access panel Before removing the water valve shut off the water supply and disconnect power to the unit Then unplug the valve electrical leads With a wrench disconnect the inlet water line from the valve Extract the valve mounting screws pull the valve forward and disconnect the outlet water line See Figure 5 17 Harvest Cycle Timer amp Switch Removal The harvest cycle timer switch is attached to the timer The timer is attached inside the control box with screws and spacers Three wires are connected to the switch One electrical lead from the timer runs to the terminal board the other runs to the cube size control To access the cycle timer remove the con
49. let of the valve is attached to the hot gas line that runs up to the evaporator The hot gas solenoid coil is attached to the top of the hot gas valve body with a clip To access the hot gas valve remove the control panel inner access panel upper and lower face plates back panel and unit shell NOTE Separating the top of the base assembly from the bottom by extracting the screws from the base assembly legs will allow easier access to the hot gas valve Cut inlet and outlet tubes approximately 1 from hot gas valve body Before removing the hot gas valve capture the refriger ant from the sealed system Then disconnect the sole noid coil from the valve body With a a tube cutter cut the valve inlet and outlet tubing approximately one inch from the valve body and lift the valve off of the base assembly See Figure 5 30 Figure 5 30 Hot Gas Valve Removal 3757320 Revision B August 2005 5 14 Model 3151 UC Ice Maker Compressor Removal The compressor sits on the bottom plate of the base assembly Two U shaped compressor brackets are passed up through the base plate compressor grom mets and washers Cotter pin clips are attached to the compressor brackets over the washers and grommets to hold the compressor in place To access the compressor remove the control panel inner access panel upper and lower face plates back panel and unit shell NOTE Separating the top of the base
50. may also develop frost on the outside and look cloudy this is also normal The frost will disappear when liq uid is poured over the cubes Storage The ice storage bin is not refrigerated Instead it is heavily insulated much like an ice chest or picnic cool er If the ice bin were refrigerated the ice would freeze together into one large cluster of ice and would begin to evaporate This would yield ice that is of very poor quality and would be very difficult to remove from the machine The model 3151 will continue to operate until the ice builds up high enough to contact the bin thermostat sensor tube then it will shut off See Figure 3 7 NOTE The model 315IP will continue to pump the water from the melted cubes even when the unit is off The pump will only be on for a few seconds Run Time The amount of time that the model 3151 will run to replace melted ice without the door being opened is approximately two hours per day The amount of time that the ice machine will run to replace ice removed during use will depend upon how much ice is removed how often ice is removed how clean the ice machine is and how hot the ambient air and water supplied to the ice machine are An empty ice bin will usually take twenty four to thirty six hours to refill 3757320 Revision B August 2005 3 6 eat 1 4 Figure 3 6 Proper Cube Dimensions Ice Builds In Bin Until It Reaches Bin Thermos
51. moving the brush up and down See Figure 4 2 A CAUTION Do not bend the metal fins of the condenser doing so will restrict airflow through the condenser pos sibly causing mechanical failure of the ice maker 3 After the condenser is clean reattach the kickplate with the mounting screws With brush attachment vacuum face of condenser while moving brush up and Condenser Figure 4 2 Condenser Cleaning Model 3151 UC Ice Maker Cleaning the Ice Making System Maintenance amp Cleaning Though the water system flushes away mineral impurities during the harvest cycle some impurities will inevitably remain sticking to parts of the ice machine causing malformed ice cubes This build up of mineral scale can short en the life of the unit To keep the ice machine operating properly these impurities or minerals will have to be dissolved regularly with ice machine cleaner Sub Zero part 19034306 A WARNING THE ICE MACHINE CLEANER SOLD BY SUB ZERO CONTAINS ACIDS WHICH MAY CAUSE BURNS ALWAYS WEAR HEAVY RUBBER GLOVES AND EYE PROTECTION WHEN WORKING WITH ICE MACHINE CLEANER IF ICE MACHINE CLEANER CONTACTS SKIN FLUSH WITH WATER IF ICE MACHINE CLEANER CONTACTS EYES FLUSH WITH LARGE AMOUNTS OF WATER AND CONTACT PHYSICIAN IMMEDIATELY IF SWALLOWED DO NOT INDUCE VOMITING DRINK LARGE AMOUNTS OF WATER OR MILK CALL PHYSICIAN IMMEDIATELY KEEP ICE MACHINE CLEANER OUT OF REAC
52. mp Parts Warranty Claims Phone 800 222 7820 Technical Assistance Phone 800 919 8324 Customer Service amp Technical Assistance Facsimile 608 441 5887 Parts Warranty Claims Facsimile 608 441 5886 Service Department E Mail Address customerservice subzero com Office Hours 7 00 AM to 7 00 PM Central Time Monday through Friday This manual is designed to be used by Authorized Service Personnel only Sub Zero Freezer Co Inc assumes no responsibility for any repairs made on Sub Zero refrigeration units by anyone other than Authorized Service Technicians Information and images contained in this manual are the copyright property of Sub Zero Freezer Company Inc Neither this manual nor any information or images contained herein may be copied or used in whole or in part without the express written consent of Sub Zero Freezer Company Inc Sub Zero Freezer Company Inc all rights reserved 3757320 Revision B August 2005 1 2 Model 3151 UC Ice Maker General Information TABLE OF CONTENTS Page Section 1 General Information 1 1 1 2 Important Safety 9 1 2 Technical Assistance 1 2 Table of Contents 1 3 Warranty Information 1 4 Serial Number Tag Information 1 4 Model
53. n To remove the bin thermostat bracket push the bracket back into the hole in the rear bin wall until the front of the bracket clears the hole in the front wall Then lift the front of the bracket up and pull it from the hole in the rear wall See Figure 5 12 Figure 5 12 Bin Thermostat Bracket Removal Curtain and Curtain Stiffener Removal The curtain and curtain stiffener are held to the reser voir with screws that pass through the front of the reser voir and stiffener then into the bracket of the curtain Curtain To remove the curtain and stiffener extract the curtain mounting screws and pull the curtain and stiffener from Curtain the reservoir See Figure 5 13 Stiffener NOTE Screw Bottom edge Cube Chute Removal must angle to rear Reservoir The cube chute has two notches at its rear flange that front fit over the stems of the spray jet bases The spray jet bases are then tightened down to sandwich the rear flange of the chute between the bottom flat surface of the jet base and the reservoir wall Figure 5 13 Curtain amp Curtain Stiffener Removal S Cap Nozzle 9 To remove the cube chute loosen both spray jet bases Spray Jet a Spinner and pull the cube chute forward See Figure 5 14 Assembly Jet Base Spray Jet Assembly Removal A spray jet assembly consists of a cap nozzle spinner and jet base The nozzle screws onto the base capti vating
54. n trol box and plug into the terminal board To access the hot gas solenoid coil remove the control panel and inner access panel Before removing the hot gas solenoid coil disconnect the power to the unit Then unplug the coil electrical leads from the terminal board With a small flat blade screwdriver pull the clip off of the top of the hot gas valve body lift the coil off of the valve body and pull the electrical leads from the control box See Figure 5 20 Drain Pump Pressure Switch Removal 315IP Only Figure 5 20 Hot Gas Solenoid Coil Removal The drain pump pressure switch is attached to the pump bracket with screws Electrical leads are con nected to both sides of the switch and a pressure sensing hose leading from the drain pump inlet hose is fit over the pressure sensing port of the switch To access the drain pump pressure switch remove the control panel inner access panel and lower face plate Before removing the drain pump pressure switch dis connect the power to the unit and scoop all the ice cubes out of the storage bin Then unplug the electri dv cal leads from both sides of the switch Pull the hose Pressure LA Drain Pump Inlet Hose Pressure Hose from the pressure sensing port Extract the switch Switch mounting screws and pull the switch forward See Figure 5 21 Figure 5 21 Drain Pump Pressure Switch Removal Circulating Spray Pump Removal A rubber
55. ns below 1 Open door to approximately 80 2 Insert 90 stop pin down through holes in bottom hinge bracket See Figure 2 10 NOTE The stop pin must be driven down through the hole until the head of the pin makes contact with the bracket 3 Insert 90 stop pin up through holes in top hinge bracket NOTE The stop pin must be driven up through the hole until the head of the pin makes contact with the bracket 4 Check for proper door operation 3757320 Revision B August 2005 2 8 Hinge Cover Installation Adhesive and magnetic hinge covers are supplied with the unit It is very important to read the notes below before proceeding to the hinge cover installation instructions NOTES DO NOT attempt to install the hinge covers before the 90 door stop pins are installed if used If the 90 stop pins are installed it will be necessary to remove the knock outs from the hinge cover oppo site the head of the pin See Figure 2 11 Hinges must be free of dirt and grease before attempting to install the hinge covers 1 Remove backing paper from adhesive pads of upper and lower hinge covers then adhere covers to top and bottom of each hinge bracket as shown in Figure 2 11 The center hinge covers are magnetic Install them to center of each hinge bracket as shown in Figure 2 11 Figure 2 10 90 Door Stop Pin at Bottom Hinge Center Cover Hinge Bracket Top Cover
56. nts followed by com pressor area components An attempt has been made to arrange these procedures in such a way as to simulate which components would need to be removed first in order to gain access to other components When following a component removal procedure it may be necessary to reference another component removal procedure listed earli er in this section NOTE Before continuing please take note of the WARNINGS and CAUTIONS below A WARNING TO AVOID ELECTRIC SHOCK POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING AND OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC TRICAL COMPONENTS A CAUTION If removing or disconnecting door hinge assemblies remember they are spring loaded and may recoil quickly when released If working in the compressor area remember that compressor and tubing may be hot If working on or around the condenser remember that condenser fins are sharp 3757320 Revision B August 2005 5 2 Model 3151 UC Ice Maker Component Access Removal EXTERIOR COMPONENTS Kickplate Removal The kickplate is held in place with two screws one at each side To remove the kickplate extract the screws and pull the kickplate forward See Figure 5 1 Door Panel Mounting Hardware and Upper Door Hinge Cover Removal The handle side panel mounting bracket is attached to the back side of the door panel with screws The tabs of the handle side bracket then fit
57. om the cube molds Condenser Figure 3 1 Refrigeration System During Ice Making Cycle 3757320 Revision B August 2005 3 2 Model 3151 UC Ice Maker Theory of Operation Water System Circulating Spray Water Inlet The water system provides and recirculates the water Pump for ice production It also provides a means of drainage After the ice is produced the water system flushes the impurities and minerals that were in the water down the drain During routine cleaning the water system will circulate the ice machine cleaning solution See Figure 3 2 Cube Molds Electrical System Power for the refrigeration system and the water sys tem is provided by the electrical system The electrical system also controls the operational cycles of the ice maker The electrical schematic in figure 3 3 below illustrates the electrical system of a model 3151 during Inlet Water the ice making cycle Valve Figure 3 2 Water System During Ice Making Cycle NEUTRAL WATER HOT GAS TIMER SOLENOID SOLENOID MOTOR 115 60 1 CIRCUIT SCHEMATIC OVERLOAD LINE BIN LEVEL 21 _j CONTROL TIMER CUBE SIZE ________ SWITCH CONTROL Figure 3 3 Electrical Schematic of Model 315 During Ice Making Cycle 3757320 Revision B August 2005 Theory of Operation Model 3151 UC Ice Maker OPERATIONAL CYCLES
58. ompressing the refrigerant gas thus rais ing the pressure and temperature During the ice making cycle the compressor pushes this high pres sure high heat gas to the condenser Condenser The high pressure high heat gas travels through the condenser where the heat is dissipated by cooler air being drawn over the condenser tubing by the condenser fan This changes the gas into a high pressure warm liquid that then enters the filter drier Filter Drier The high pressure warm liquid travels through the filter drier which removes moisture from the refrigerant before it enters the capillary tube Capillary Tube The warm liquid refrigerant travels through the skinny capillary tube which is wrapped around the suction line and accumulator As the warm liquid refrigerant travels through the capillary tube it gives up heat to the cool vapor refrigerant in the accumulator and to the cool refrigerant gas travel ing through the suction line As the refrigerant in the capillary tube gives up heat the pressure drops so it is a low pressure cool liquid before it enters the evap orator Evaporator A dramatic pressure drop occurs as the low pressure cool liquid refrigerant leaves the small diameter capillary tube and enters the larger diameter evaporator tubing and the refrigerant begins to vaporize This vapor travels through the evaporator absorbing heat from the water being sprayed on the evaporator This cool vapor then enters t
59. op of the control panel forward to disengage the dual lock fastener pads and lift the panel up See Figure 5 6 3757320 Revision B August 2005 5 4 Mounting Screws ie Hinge Mounting Screws Figure 5 5 Hinge Removal Control Panel Control 7 Figure 5 6 Control Knob and Panel Removal Model 3151 UC Ice Maker Component Access Removal Inner Control Access Panel Removal The inner control access panel is behind the control panel assembly The access panel is held in place with three screws that pass through the panel into the unit cabinet shell one at top center of the panel and one at each side To remove the inner control access panel the control knob and control panel assembly must first be removed Then extract the three panel mounting screws and pull the top of the panel forward while lifting up See Figure 5 7 Bin Trim Ring Removal The bin trim ring fits into the opening of the upper cabi net face plate and extends into the bin area Tabs behind the outer flange on the trim ring hold the ring to the upper cabinet face plate and a bead of permagum is placed behind the outer flange of the trim ring to pre vent it from rattling To remove the bin trim ring flex it inwa
60. rd at the top and sides while pulling forward this will disengage the tabs from the upper cabinet face plate See Figure 5 8 Top Hinge Mount Support Bracket y p Bin Seal Upper Cabinet Face Plate amp Bin Seal Removal The bin seal is a 3 4 thick styrofoam sheet cut to approximately the same size and shape as the upper cabinet face plate The bin seal is sandwiched between the face plate and the cabinet The upper cabinet face plate is attached to the cabinet La Trim with screws two screws pass through the top hinge and Ring the face plate into the top hinge mount support bracket Upper Cabinet Face Plate two screws pass through the face plate at the upper corner on the handle side and one screw at each bot tom corner pass through flanges into the cabinet shell To remove the upper cabinet face plate and bin seal the control panel assembly door hinges and bin trim ring must be removed first Then extract the two screws at the upper corner on the handle side and the two screws at each bottom corner Now pull the face plate and bin seal forward See Figure 5 8 Figure 5 8 Bin Trim Ring Upper Cabinet Face Plate and Bin Seal Removal Decor Trim Gasket Removal The decor trim gasket fits over the edge of the cabinet shell at the opening of the bin screw at the Loosen top of the opening and one at the bottom of the opening these help to
61. re 4 12 Remove Control Knob Face Plate amp Access Panel 2 Locate the cube size adjustment screw See Figure 4 13 a To make the cubes fuller turn the screw clock wise approximately 1 4 turn This will increase the freeze cycle time b To shorten the freeze cycle time and decrease the fullness of the cubes turn the screw coun terclockwise approximately 1 4 turn 3 After the following freeze cycle the cubes should have responded to the the adjustment See Figure 4 14 for proper cube size If further adjustments are required perform the adjustments early in the freeze cycle TOO BIG CORRECT SIZE TOO SMALL 4 5 Figure 4 14 Ice Cubes 3757320 Revision B August 2005 Maintenance amp Cleaning Model 3151 UC Ice Maker Bin Ice Level Adjustment When the ice machine shuts off the ice level in the bin should be even with the metal tube inside the bin If vr the ice in the bin is too high or too low turn the ice machine control knob to adjust the bin thermostat PY accordingly See instructions below 1 To lower the ice level turn the control knob counter clockwise Usually 1 8 turn will be enough See Figure 4 15 2 increase the ice level turn the control knob clockwise Usually 1 8 turn will be enough See Figure 4 16 Harvest Cycle Time Adjustment The harvest cycle time is set at the factory for approxi mately three minutes which
62. re 5 25 Drain Pump Assembly Removal 315IP Only The drain pump assembly on the model 315IP sits on the pump bracket The pump is held in place with a cable tie that loops through two holes in the bracket and around the body of the pump The bracket is held to the base assembly with screws The pump inlet hose fits over the front port of the pump The outlet hose is attached to the top port of the pump To access the drain pump assembly remove the control panel inner access panel upper and lower face plates back panel and unit shell Before removing the drain pump assembly disconnect the power to the unit and scoop all the ice cubes out of the storage bin Then disconnect the inlet and outlet hoses from the pump cut the cable tie holding the pump to the pump bracket and pull the pump off of the bracket See Figure 5 26 3757320 Revision B August 2005 Model 3151 UC Ice Maker gt Unhook tube assy from evaporator Figure 5 25 Reservoir Fill Tube Removal Outlet Hose Inlet Hose Cable Tie Pump Bracket 5 12 Figure 5 26 Drain Pump Removal Model 3151 UC Ice Maker Component Access Removal Condenser Fan Assembly Removal The condenser fan motor is attached to the fan bracket with screws that pass up through the bracket into the motor body The fan bracket is attached to the base assembly with screws that pass up through t
63. s installed in homes left unoccupied for extended periods of time dur ing winter months If the ice maker is in a residence used year round these directions need not be followed 1 Clean the ice making system condenser and ice storage bin as described on the preceding pages Turn off the water supply to the unit 3 Locate the bottom hose that runs from the circulat ing spray pump to the reservoir Loosen the hose clamp on that hose and disconnect the hose from the reservoir See Figure 4 8 This will drain the reservoir 4 Pull the control knob from the ice machine control shaft See Figure 4 9 5 Remove the control face plate by pulling the top for ward to disengage the velcro strips then lift up See Figure 4 9 6 Remove the inner control access panel by extract ing the three screws then lower the panel slightly and pull forward See Figure 4 9 7 Locate the water valve and disconnect the inlet water line from the water valve See Figure 4 10 8 Locate the cycle timer and rotate the shaft clock wise until the cam is in the harvest cycle position switch button out See Figure 4 11 9 With the appliance operating blow air through the water valve with a tire pump or similar device This will purge the valve and water system of water 10 If winterizing a model 315IP with drain pump pour 1 2 gallon of RV antifreeze propylene glycol down the bin drain CAUTION Do not use automotive ant
64. should be adequate to release all the cubes and fill the reservoir If the timer needs to be adjusted follow the directions below 1 Disconnect electrical power to the unit WARNING ELECTRICAL SHOCK HAZARD POWER TO THE UNIT MUST BE DISCONNECT ED BEFORE ATTEMPTING THIS ADJUSTMENT 2 Remove the control knob the control face plate and the inner control access panel See Figure 4 17 3 Locate the timer and loosen the set screw that holds the two halves the timer cam together 4 Rotate one half of the cam to either open or close inner Control Control Control A the lower portion of the cam More open increases Access Panel Face Plate Knob harvest time less open decreases harvest time See Figure 4 18 Figure 4 17 5 Tighten the set screw and replace the control knob Remove Control Knob Face Plate amp Access Panel the control face plate and the inner control access panel 6 Reconnect power to the unit Timer Set Screw Figure 4 18 Loosen Set Screw 43757320 Revision B August 2005 4 6 Model 3151 UC Ice Maker Component Access Removal SECTION 5 COMPONENT ACCESS AND REMOVAL Component Access Removal Model 3151 UC Ice Maker COMPONENT ACCESS AND REMOVAL This section explains how to access and remove components in a model 3151 ice maker This section is arranged as follows Exterior components followed by the internal compone
65. sy Complete 22 A27028001 Reservoir Drain hose 23 A27027001 Tube 5 8 Requires 4 1 4 24 02172701 Tube 1 2 Requires 3 1 2 25 A36892020 Tube 1 2 Requires 3 5 8 cae 5 26 12250321 Fan Blade Spray Pump 27 02353201 Gasket 28 02336901 Screw 2 29 02352201 Speed Nut 2 30 02337401 Bin Assembly 31 13061708 Drain fitting foamed in bin 32 11050401 O Ring 33 05059101 Pal nut 34 02340601 Clip Hot Gas Valve 35 02281411 Coil Hot Gas Valve 36 6746001 Hot Gas Valve Body 37 A37334001 Drier 38 12258001 6 3 lt 28 38 Not shown Pump Wire Harness Description Tube Holder Copper Inlet Clamp Drain Pump Kit Complete To convert gravity drain model to drain pump model Drain Pump Only Drain Pump Kit Service Parts Impeller amp housing kit Inlet hose Elbow Check Valve O Ring Pressure Switch Hose Pressure Sense Barb Connector Clamp Plastic Hose Bracket Pump Discharge hose Wire Harness Pump 3757320 Revision B August 2005 Parts Lists Item Part 03140408 18371001 A28798001 12239601 02287101 18372901 18470028 03160801 02249701 A29015001 Description Screw 4 Fan Blade Fan Motor Bracket Fan Motor Fan Shroud Condenser Grommet Leg Leveler Clip Bracket 3757320 Revision B August 2005 Model 3151 UC Ice Maker CONDENSING UNIT Part 18875210 18875211 18875212 121
66. t Up or Down CAUTION Airflow through the kickplate grille must never be obstructed Doing so could cause damage to the ice machine Figure 2 6 Kickplate Grille Adjustment Reversing Door Swing Baar Mounting ee All model 3151 units are manufactured with the hinges FID Screws Upper on the right side of the door The door and hinges are ba m Door designed to be reversible so that the hinges can be m Panel moved to the left side of the door To reverse the door and pud Bracket swing from right to left follow the instructions below qa 1 Remove door panel if previously installed x Soy 2 Remove door hinge cover top hinge RH from top E of door by extracting the two mounting screws from Hinge E Mounting face of door See Figure 2 7 Holes 3 Remove door from hinges by extracting the four door mounting screws two at bottom hinge two at Door Hinge top hinge See Figure 2 7 Cover 4 Remove hinges from cabinet by extracting the four hinge mounting screws two each hinge 5 Extract the four filler screws from opposite left hinge mounting holes in cabinet See Figure 2 7 and insert them into right hand hinge mounting holes of cabinet Door 6 Move bottom right hinge to top left hinge mounting Mounting holes and insert two hinge mounting screws Screws through hinge into mounting holes and tighten Then move top right hing
67. tat Sensing Tube Figure 3 7 Ice Bin Storage Level Model 3151 UC Ice Maker Maintenance amp Cleaning SECTION 4 MAINTENANCE CLEANING AND ADJUSTMENT INFORMATION Maintenance amp Cleaning Model 3151 UC Ice Maker ICE MAKER MAINTENANCE amp CLEANING The ice maker should never be allowed to operate with out regular maintenance and cleaning Keeping the unit clean and maintained will keep it sanitary extend the life of the machine and keep energy consumption down Maintenance and cleaning should be performed approximately every six months Some water condi tions will dictate even more frequent cleaning of the ice making section just as some carpets and pets will dic tate more frequent cleaning of the condenser The Five Things to Keep Clean outside of cabinet and door ice storage bin ice scoop condenser The ice making system Cleaning the Outside of Cabinet and Door To clean the outside of the cabinet and door including the door gasket wipe off spills as they occur If any thing spilled dries onto the surface wash it off with a mild dish soap and warm water Cleaning Sanitizing the Ice Storage Bin Sanitizing the ice storage bin periodically is recom mended To do this the unit must be switched OFF and the storage bin emptied Then mix a sanitizing solution consisting of one ounce household bleach with two gallons of hot 95 35 C 115 F 46
68. the inlet water line at this time by turning water supply on and letting the water drain into a bucket 8 Place flare nut onto inlet water line then flare end of tube 9 Attach flare nut to water valve inlet 10 Cut drain tube to required length 11 Connect drain tube to bin drain fitting and secure it with a hose clamp 12 Turn water supply on and check for leaks 13 Replace all parts removed in step 2 3757320 Revision B August 2005 2 4 Model 3151 UC Ice Maker Installation Information PRE INSTALLATION SPECIFICATIONS INSTALLATION Model 315 Drain Pump Model Installation Instructions Model 315 Drain Pump Model 1 Place ice maker in front of installation location Level unit as described on previous page 2 Remove door with hinges kickplate lower stainless SHUT OFF gt 1 8 1 3cm gt VALVE steel face plate control knob and control panel 24 3 Route inlet water line through back of compressor 60 9 area to front of unit keeping tubing towards left side 4 Locate coil of 3 8 plastic drain tubing secured to back of unit 5 Route plastic drain tube to drain connection point 151 4 NOTE Often an air gap is required by local codes between the ice maker drain tube and the drain tacle TOP VIEW NOTE All 6 Plug power cord into wall outlet TTT TTT plumbing 7 Push ice maker into install
69. the unit To keep the ice machine operating properly these impurities or minerals will have to be dissolved regularly with an acid wash ice machine cleaner See Ice Making System Cleaning instructions in the Maintenance Cleaning amp Adjustments section of this manual If the local water supply has high levels of impurities or minerals a water filtering system may be needed A proper water filter can remove taste and odors as well as particles from the water before it reaches the ice machine In line water filters are the most common Other meth ods of water treatment for dissolved solids include reverse osmosis R O and polyphosphate feeders If a reverse osmosis system is used it should include post treatment to satisfy the water s aggressiveness Deionized water is not recommended Because water softeners exchange one mineral for another Sub Zero does NOT recommend their use for the ice machine Softened water may result in white mushy cubes that stick together Sub Zero suggests that if in doubt about the water qual ity of the local water supply a local point of use special ist be contacted for recommendations on water filtering or treatment Model 3151 UC Ice Maker Installation Information Electricity The model 315l is supplied with a three prong power cord to be plugged into a grounded wall outlet See Figure 2 2 The outlet should be on a branch circuit of 115 VAC 60 Hz sin
70. to water valve Repair bad wiring Check operation of water valve If defective replace Check for leaks in reservoir Repair leak No water spray from spray jets a Check for clogged spray jets See Cleaning the Ice Making System instructions in Maintenance Cleaning and Adjustment section of manual b Check for leaks in reservoir Repair leak c Check for loose or disconnected wiring to spray pump Repair bad wiring d Check operation of spray pump Replace if defective Continued on next page 7 3 3757320 Revision B August 2005 Troubleshooting Guide Model 3151 UC Ice Maker Hot gas valve stuck open Electrical problem at compressor Sealed system problem C Ice machine operates Mineral scale build up in ice making makes ice but cubes do system not release from mold Harvest time too short should be approximately 3 3 1 2 minutes Hot gas valve does not open during harvest cycle Cube size control will not close PROBLEM POSSIBLE CAUSE TEST ACTION B Ice machine operates No airflow through condenser a Check for obstructions in vents of kick but will not make ice plate Move clear obstruction Continued b Check for dirty condenser Clean con denser c Check for loose or broken condenser fan blade Repair or replace blade d Check for loose or disconnected wiring to condenser fan motor Repair bad wiring e Check operation of condens
71. trol panel and inner access panel Before removing the harvest cycle timer and switch disconnect the power to the unit Then unplug the electrical leads from the switch Extract the timer mounting screws and pull the timer forward Disconnect the timer electrical lead from the terminal board Extract the control box face plate mounting screw pull the face plate forward and disconnect the timer electrical lead from the cube size control See Figure 5 18 Terminal Board Removal The terminal board is attached inside the control box with screws To access the terminal board remove the control panel inner access panel and lower face plate Before removing the terminal board disconnect power to the unit Then extract the board mounting screws disconnect all electrical leads from the terminal board and pull the board forward See Figure 5 19 Outlet Electrical Plug Figure 5 17 Water Valve Removal Thickness Control Control Face Plate ycle Timer Figure 5 18 Cycle Timer Removal Terminal Board Figure 5 19 Terminal Board Removal 3757320 Revision B August 2005 Component Access Removal Component Access Removal Model 3151 UC Ice Maker Hot Gas Solenoid Coil Removal The hot gas solenoid coil is attached to the top of the hot gas valve body with a clip The electrical leads of the coil pass through a grommet in the side of the co
72. ts only Serial Number Tag Information General Information Warranty Details Total Product Parts includes but is not limited to the following Control Circulating Pump Switches Fan Motor amp Blade Drain Tube Wiring Water Valve Hot Gas Valve Door hinges Compressor Electricals etc Sealed System Parts include the following Compressor Condenser Evaporator Filter Drier Heat exchanger All Tubing That Carries the Freon NOTE Condenser Fan Motor Freon Solder and com pressor electricals are NOT considered sealed system parts Warranty Notes Sub Zero Freezer Company Inc assumes no liability or responsibility for Sub Zero products that have been altered in any way including the use of parts and or components not specifically approved by Sub Zero All warranties begin at the time of the unit s initial installation All Warranty and Service information collected by Sub Zero is arranged and stored under the unit serial num ber and or customer name Sub Zero requests that you have the model and serial number available when ever contacting the factory or parts distributor The serial number tag is located in two places one on the left wall of the ice bin and one on the unit tray See Diagram below Upper serial tag on left side of ice bin MODEL NUMBER SERIAL NUMBER A C SUPPLY VOLTAGE TOTAL LOAD AMPS REFRIGERANT 134a DESIGN PRESSURES LISTED TI9L FRE
73. voir with approximately two quarts of water During the ice making cycle water is taken from the reservoir and sprayed into the cube molds where it begins to freeze But due to the fact that water containing mineral impurities needs a lower temperature to freeze the impure water falls back into the reservoir and the purer water freezes in the cube molds This causes the water in the reservoir to become highly concentrated with mineral impurities towards the end of the ice making freeze cycle no Eme A p in ModS Removing Heat from Water ALLA y tl y PP n Spray Jets nf nf Water Tube VES Hot Gas Valve A CLOSED Condenser Fan ON Compressor y IL n 4 ON Inlet Water Valve CLOSED Figure 3 4 Ice Making Freeze Cycle 43757320 Revision August 2005 3 4 Model 3151 UC Ice Maker Theory of Operation Harvest Cycle During the harvest cycle the compressor is still operating but the condenser fan and circulating spray pump are switched off The hot gas valve opens interrupting the flow of warm refrigerant from the compressor to the con denser diverting it to the evaporator The water valve also opens pouring water over the top of the evaporator and into the reservoir The warm gas in the evaporator along with the water pouring over the top of the evaporator causes the ice cubes to release from the cube molds and fall into the bin T

Model 315I (UC Ice Maker)

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