Follett MU155N Series User's Manual
Contents
1. 8 6 17 _ 9 10 2 12 5 A 5 Me cem 14 44 1 13 4 3 3 17 15 4 4 ma 16 Reference Description Part 1 Label Follett 502438 2 Top cover includes label and magnet 502905 3 Drain pan includes magnet 502903 4 Grille drain pan 502450 5 Cover electrical components 502902 6 Lid rear access includes magnet 502904 Not shown Cover ice storage under drain pan 502453 7 Label ice dispense cover push button 502623 8 Label water dispense cover push button 502617 9 Cover dispense chute push button operation includes button and label ice 502440 10 Cover dispense chute push button operation includes button and label water 502440 11 Chute focus clear plastic 502459 Not shown Push pin clear chute 502610 12 Switch push button operation for ice includes label 502441 13 Splash shield right hand unit 502612 Not shown Splash shield left hand unit 502613 14 Thumbscrew splash shield 10 32 x 1 2 501100 Not shown Panel access right hand and left hand units 502907 16 Panel wrap right hand unit 502909 Not shown Panel wrap left hand unit 502908 Not shown Panel rear motor support right hand unit 502586 Not shown Panel rear motor support left hand unit 502587 Not shown Clip Tinnerman 10 32 502621 Not shown Screw 10 32 x 1 2 502287 Not shown Legs 153mm adjustable to 229mm set of 4 502454 17 Switch water dispense push button operation includes label 502648 No2. Faulty solenoid Loose electrical connection Faulty auger motor Faulty run capacitor Loose electrical connection Faulty wheel motor Faulty run capacitor Power switch in OFF position or faulty Bin signal switches in OFF position or faulty Faulty bin thermostat Faulty transformer Icemaker related problem Faulty run capacitor oR ON Solution Turn power switch to ON position check connections Replace switch Replace transformer Check pan and reseat Replace switch Check connections 2 Check linkage oR cC Replace solenoid Check connections Check auger motor Check run capacitor Check connections Check wheel motor Check capacitor Check switch and replace if necessary Check switch and replace if necessary Replace bin thermostat Replace transformer Refer to icemaker Operation and Service Manual for diagnosing Check for power and bin signal on icemaker PC board If problems persist after following this basic troubleshooting guide call Follett s technical service group at 610 252 7301 13 Replacement parts Dispenser exterior unit with right hand RH tower Top view Front view right hand RH tower push button dispensing
3. Lift motor and mounting plate out front access opening OoahWND 11 WATER SWITCH WATER SOLENOID L2 Wiring di e iring diagrams on e Bik Ng wht L1 on AUGER MOTOR COUNTERCLOCKWISE ROTATION INterlock RELAY DISPENSE RELAY R3 R1 BLK At N Orn N Pur Pur Red Red Blk Wht 0 9 a117 a117 BS Mi UE a POWER PL2 3 Blu Blu WHEEL COUNTERCLOCKWISE ROTATION AUTOFILL R2 Pur Red Red Blk Wht M2 m PL3 2 PL3 3 AUTOFILL R2 TT Orn 6 Bik e 120 Volts S Wht AAAA AAAI Ti Red ES OI YR YN Yel LN 24 Volts DISPENSE SWITCH DISPENSE RELAY MU155N goes o Bm Yel FRIO B A Ri g ht h an d interlock relay dispenser white white white EN Yel TOP LID DRAINPAN REAR LID SWITCH SWITCH SWITCH DISPENSE RELAY Red bl Yel e 4 Blu zv e 6 9 DISPENSE SOLENOID AutoFill Timer AUTOFILL RELAY Red Blu B N rn Yel 18 MIN OFF Yel 5 SEC ON 3 o BIN T STAT IM_ 1 gt o o SWITCH NO 1 IM 2 3 00 SWITCH NO 2 E 5 E XI T d BIN SIGNAL BIN SIGNAL to to Ice Machine 2 Ice Machine 1 Orn AUGER MOTOR CLOCKWISE ROTATION DISPENSE RELAY Orn NI Pur Red Red Blk Wht 3 e Mi gt o PL2 1 PL2 2 U 55 Pur A Blu 4 Blu Left hand PL2 3 dispenser WHEEL CLOCKWISE ROTATION AUTOFILL R2
4. Condenser type A air cooled W water cooled Remote icemaker s capacity and refrigerant 400 400 Ibs 181kg day R404A 800 800 Ibs 363kg day R404A absence of manual fill unit N ice and water only no beverage rail or valves Approximate storage capacity in Ibs Dispenser configuration U undercounter Alternate voltage M 120V 60Hz A Important cautions e Storage area of dispenser contains mechanical moving parts Keep hands and arms clear of this area at all times If access to this area is required power to unit must be disconnected first Follett manual load dispensers can accommodate most cube cubelet ices up to 26mm x 26mm or Follett compressed nugget ice Crushed flake bagged nugget or congealed ice cannot be used Use of these ices can jam dispenser and void warranty Separate any waffle like sections of cubes before adding to dispenser For ice compatibility questions please call Follett customer service at 610 252 7301 Follett recommends use of an activated carbon filter for units equipped with icemakers Ice is slippery Maintain counters and floors around dispenser in a clean and ice free condition Ice is food Follow recommended cleaning instructions to maintain cleanliness of delivered ice Specifications Electrical requirements Each icemaker and dispenser requires separate circuit with electrical disconnect within 6m Equipment ground required Sta
5. Dispenser troubleshooting guide 22 eee eee 13 Replacement parts 000 c eee eee 14 Dispenser exterior 0 0 0 ees 14 Dispense assembly Ka Ka NN AN AA a NG ee I AA NA 15 HOPPET saser eiee d a AA 16 AUGE MOOT oaa ell ts ache See a e KAEN 8 GT a e a eu dels NG 17 Electrical components 244554000 anaana MPD AGANG NGABA WAL 18 Welcome to Follett Follett ice and water dispensers enjoy a well deserved reputation for excellent performance long term reliability and outstanding after the sale support To ensure that this dispenser delivers that same degree of service we ask that you take a moment to review this manual before beginning the installation of the dispenser Should you have any questions or require technical help at any point please call our technical service group at 610 252 7301 Before you begin e After uncrating and removing all packing material inspect the equipment for concealed shipping damage If damage is found notify the shipper immediately and contact Follett Corporation so that we can help in the filing of a claim if necessary Check your paperwork to determine which model you have Follett model numbers are designed to provide information about the type and capacity of Follett ice dispensing equipment Following is an explanation of the different model numbers in the U155 series MU155NR400AR Ps dispense chute location R right side L left side
6. 502478 502479 502480 501314 502912 501550 502482 501765 502913 Electrical components 14 Reference 1 OANooakW ND 9 10 11 13 14 Not shown 15 Not shown Not shown Not shown 437 6 15 2 Description Transformer 24V Relay dispense Relay auto fill Timer auto fill automatic fill units Strip terminal Tube water dispense stainless steel Bracket water solenoid Fitting outlet 1 8 MPT x 3 8 compression Valve solenoid water Fitting inlet plastic 1 4 barb Tubing water sold by the foot Switches power and icemaker Bracket switch mounting RH power and icemaker Bracket switch mounting LH power and icemaker Chute focus clear plastic Thermostat bin level Magnetic switch 1 one located under top cover 2 two located under electrical component cover Magnets 2 two located on drain pan 1 one located on top cover 1 one located on rear cover 18 d ba Part 502058 501826 501826 502471 502472 502356 502611 502562 502243 502637 502356 502209 502914 502906 502459 501432 502887 502888 FOUE TT 801 Church Lane e PO Box D Easton PA 18044 209091R00 Cool Ideas For Ice Management 610 252 7301 e FAX 610 250 0696 e www follettice com 4 02
7. O ON OD Putting unit back in service after quarterly cleaning Reassemble components For manual load units fill unit with an approved ice see caution statement on page 1 3 For automatic load units with R400A W R404A refrigerant icemakers turn bin signal switch es and dispenser power switch to ON position and allow storage area to fill 4 Push dispense button or lever to test that dispenser is functioning properly N Quarterly cleaning of icemaker system Units equipped with icemakers require cleaning of icemaker system at least every three months and more often if local water conditions dictate Failure to clean icemaker system will result in decreased performance and potential damage to icemaker Refer to Icemaker Operation and Service Manual Disassembly instructions for periodic cleaning Fig 1 Dispense chute cover removal 7 1 Remove top cover _ Front view 2 Push chute cover up vertically to slip off right hand unit holding tab 3 After clearing tab pull chute cover forward top cover endis to remove cover Dispense mechanism assembly removal drain pan 1 Remove top cover assembly 2 Remove chute cover see above 3 Remove auger motor assembly see above Bw 4 Remove quick release pins from the ice chutes and gates then unplug wires from solenoids 5 Lift dispense mechanism up and off auger tube Auger and auger tube removal Fig 3 Fig 2 1 Remove auger motor and dis
8. meets all requirements in this manual and cut counter as shown Block up area below counter cut out to support dispenser when lowered into place For automatic load dispensers disconnect ice transport tube from bracket in storage area of dispenser Since this tube must be reinstalled in bracket after dispenser is dropped into counter note how tube is held by bracket tabs before disconnecting 4 Carefully lower dispenser into counter until it rests on support blocks QI Adjust height from below with standard leg kit until dispenser flange rests flush with counter Apply a bead of NSF listed silicone sealant Dow Corning RTV 732 or equivalent approximately 6mm in diameter around perimeter of dispenser where it meets counter and smooth sealant to a 4mm radius Install a hard drain line maintaining at least a 6mm per 304mm run slope and insulate line to prevent condensation Excessive heat applied while sweating metal pipe may melt plastic fitting on dispenser PVC pipe is suggested Care must be taken in sweating any metal drain pipe used Make electrical connections in accordance with applicable wiring diagrams provided as well as NEC and local codes Provide disconnects within 3m of dispenser and icemaker for servicing Counter cut out lt 772mm 3mm _ 3mm 667mm 3mm 3mm oS Front of counter Installing remote icemaker automatic load units only Correct inst
9. with clear potable water 3 Wipe with Solution B to sanitize Periodic cleaning of dispenser Recommended daily cleaning of drain pan DO NOT run plastic parts drain pan dispense chute cover dispense wheel through a dishwasher 1 Remove all debris from drain pan 2 Pour 1 gallon 4L hot water into drain pan to keep drain lines clear Recommended weekly cleaning 1 Remove drain pan and grille and wash with Solution A Rinse thoroughly 2 Pour a solution of one cup 80z 237ml household bleach mixed with one gallon 3 8L hot water into drain pan to help prevent algae growth in drain lines Recommended quarterly cleaning every 3 months On push button units remove dispense switch from dispense chute cover before cleaning chute cover Turn power switch to OFF position and remove top from dispenser Remove ice from storage area Remove dispense chute cover chute auger motor assembly auger and auger tube page 10 Remove drain pan grille dispense wheel and cover plate page 11 Clean all components and bin storage area with Solution A rinse thoroughly with clear water and sanitize with Solution B Remove clean out plug from drain line tee on side opposite dispense tower and let bath drain Use a bottle brush to clean coil with Solution A then rinse and sanitize with Solution B Reinstall clean out plug in drain line tee Pour potable water into bath to submerge coil akWwWND
10. MU155N Series 120V 60Hz Ice and Water Dispensers Installation Operation and Service Manual Automatic load units with one icemaker o o I o 8 0 Automatic load units with two icemakers Following installation please forward this manual to the appropriate operations person BOLUE TT 801 Church Lane e PO Box D Easton PA 18044 209091R00 Cool Ideas For Ice Management 610 252 7301 FAX 610 250 0696 e www follettice com Table of contents Welcome to Follett 0 00 00 ee 3 Before VOU DEIN PEPPER 3 Specifications 0 0 eee 3 Electrical requirements llli eee 3 Plumbing and clearance requirements 0055 4 Field wiring diagrams nesana aanas noorena ne ee c 5 Installation procedures 00 cece eee eee 6 Installing dispenser in counter 22000000 eee eee 6 Installing remote icemaker 200 20 eee eee eee 7 citis e wie tuk ie aaa E Ae ANAN ee E eee 8 User Information aana aaan ee 8 Cleaning Procedures 2 2 8 Disassembly for cleaning ic aae oco aca i aote Rocha dro o 10 Service information sellers 11 Disassembly for service eas ero a o ie e awe hob nici 11 Wiring diagrams ck se TET AS TET D TLEDI 1 tee fee ak 12
11. Pur Red Red Blk Wht 1 NC 7 M2 2 9 PL3 2 PL3 3 AUTOFILL R2 Orn Blu T Blu 6 9 PL3 1 Right or left hand dispenser 12 LEGEND TERMINAL STRIP CONNECTION PIN and SOCKET CONNECTION lt Before calling for service 1 Check that there is ice in dispenser and that congealed cubes are not causing a jam 2 Check that circuit breaker and switches are in ON position 3 Check that drain pan rear lid and top are on securely If ajar dispenser will not operate When the top is off auger does not operate even though the solenoids do 4 Check that all drains are clear Note For units equipped with Follett compressed nugget icemaker see Icemaker Operation and Service Manual for service and troubleshooting information Dispenser troubleshooting guide Symptom Ice does not dispense Auger motor does not run Wheel motor does not run Ice does not dispense Auger motor runs Wheel motor runs Gate does not open Ice does not dispense Auger motor does not run Wheel motor runs Ice does not dispense Auger motor runs Wheel motor does not run No ice in dispenser oR WP N D O Ww Possible cause Power switch faulty or in OFF position loose connection Faulty dispense switch Faulty transformer Drain pan ajar Faulty drain pan safety switch Loose electrical connection Linkage problem between solenoid and gate
12. allation of remote icemaker s is critical to proper performance of icemaker and dispenser Check to make sure bin signal on icemaker control board is switched to 24 volt connection Refer to installation manual packed with icemaker for important details on ice transport tube run ventilation requirements and other installation requirements Failure to comply with instructions will void warranty 1 Position icemaker in desired location 2 Push one end of ice transport tube s through hole s provided in side of dispenser 3 Route tube into ice tube bracket inside dispenser and engage bracket tabs in holes located in end of ice transport tube s See drawings below 4 Proceed with ice transport tube installation from dispenser to icemaker in compliance with instructions contained in icemaker installation manual packed with icemaker Ice tube retainer bracket ice tube thermostat bb c thermostat Front view Tabs in ice tube retainer bracket engage holes in ice tube and hold tube in place 25mm ice tube Side view 7 To start up and operate dispenser 1 Follow detailed cleaning instructions in service manual before operating dispenser 2 For manual load units remove front drain pan or rear lid and fill storage area with compatible ice Follett manual load dispensers can accommodate most cube cubelet ices up to 26mm square and Follett compressed nugget ice Crushed flake nugg
13. ating agitator Baffle under dispense wheel Drive bar under dispense wheel Motor vertical auger Motor wheel Seal wheel motor Spacer wheel motor Capacitor wheel motor Agitator rotating 534mm long Plate wheel motor mounting Agitator stationery Bracket ice tube double tube Ice transport tube sold by the foot Ice transport tube 10 ft Ice transport tube 20 ft Insulation transport tube sold by the foot Coil plain water Tubing water sold by the foot Cover blank ice entry Gasket ice entry Plate ice entry 2 holes 16 left hand unit shown Part 502491 502492 501696 502487 502488 501681 501684 501682 502476 502560 501333 501768 501782 502484 502615 502490 502497 500366 502522 502523 501176 502461 502356 502674 502672 502673 Auger motor side view top view 6 9 5 o Reference Description Auger motor drive assembly vertical includes all items below Motor vertical auger includes gearbox and capacitor Chain auger drive 35 40p Sprocket 35 22T 5 8 bore Sprocket 35 12T 5 8 bore Drive shaft Bearing auger upper and lower Cover and bearing chain drive includes 501314 Capacitor 25mf 270V Key Woodruff Washers thrust 4 Mounting plate auger motor includes 501314 OMAN OA BARON k O Part 502953 502476 502477
14. either one or two Follett remote icemakers These icemakers may be located up to 6m away from the dispenser As water freezes to the inside walls of the icemaker evaporator a rotating stainless steel auger removes ice and carries it to the top of the evaporator assembly where it is compressed and extruded through an outlet port The extruded ice is then pushed through the tube to the storage compartment of the dispenser A level fill circuit maximizes fill in the storage area by rotating the wheel at intervals until the bin is completely filled When the bin is filled a bin stat shuts the icemaker off to avoid overfilling of the bin The icemaker will restart after 20 minutes if the bin is calling for ice Cleaning and sanitizing procedures N Warning Always disconnect power before cleaning dispenser Using solutions below clean and sanitize storage area and beverage lines before starting up unit and on a routine basis as noted below Solution A Prepare a cleaning solution 200 ppm of available chlorine content of Ecolab Mikro chlor Cleaner or equal chlorinated detergent Cleaning solution temperature must be at 75 125 F 24 to 52 C Solution B Prepare a sanitizing solution 50 ppm of available chlorine content of Ecolab Mikro chlor Cleaner or equal chlorinated detergent Sanitizing solution temperature must be at 75 125 F 24 to 52 C Cleaning bin before use 1 Wipe storage area with Solution A 2 Rinse thoroughly
15. et bagged or congealed ice cannot be used Use of these ices can jam dispenser and void warranty Separate any waffle like sections of cubes before adding to dispenser For questions about ice compatibility call Follett s customer service group at 610 252 7301 3 Turn power switch located on control box to ON position 4 For automatic fill units follow detailed instructions in icemaker installation section of installation manual then turn icemaker bin signal switch es located on control box to ON position and begin to make ice 5 When dispenser has at least 153mm of ice in storage area press PUSH FOR ICE lever or button to ensure that dispenser is operating properly Note If additional start up information is needed call Follett Corporation at 610 252 7301 User information How the dispenser works Follett s MU155N series ice and water dispensers are available in manual load configurations using ice from another source or automatic load configurations fed from one or two Follett 400 Ib 181kg day remote icemakers In all models ice is stored below the counter in the dispenser storage area When the dispense lever or button is pushed the dispense motor is activated This causes the wheel assembly in the storage area to turn moving ice to the vertical auger assembly which carries ice up to the dispense chute where it drops by gravity into the container In automatic load units ice is manufactured in
16. n min min pan drain Automatic load units with 1 icemaker Le Automatic load units with 2 icemakers O Field wiring Electrical connection Circuits required MU155NR400A W icemaker and dispenser 120V 60HZ 2 circuits required hard wiring Cord and plug connection provided for bin signal MU155NR800A W icemaker s and dispenser 120V 60HZ 3 circuits required hard wiring Cord and plug connection provided for bin signal Field wiring diagrams Automatic load units IMPORTANT Field wiring diagram is intended to aid electrician or technician in understanding how equipment works Electric supply 120V 60Hz Electric supply ttl 120V 60Hz ER Ka MU155N R400A W Naga Ts dispenser ice machine GND m Tr o T Lis L2 h t T Lf ee ent Junction box GND i Electric supply 120V 60Hz p essea ees L2 EN optional second E R400A W Dag In 44 L1 GND rg o a Junction box L2 B Los L1 beh best dissidiis Connections to complete Junction box Installation Installing MU155N dispenser in counter All MU155N dispensers must be installed level in both directions and supported from N below with 153 229mm adjustable legs provided or channels installed on site DO NOT hang dispenser on flange of counter 1 Check that dispenser location
17. ndard electrical 120V 60Hz Model Icemaker Dispenser number amperage amperage MU155NR400A W 11 0 amps 4 0 amps MU155NR800A W 11 0 amps ea 2 4 0 amps 3 Plumbing Dispenser 3 4 PVC slip joint for hopper drain 3 4 PVC pipe nipple for beverage drain pan 3 8 ID red line tubing for water in Note Drains should be hard piped and insulated Maintain at least 6mm per 304mm run slope on drain line run Icemaker Refer to Icemaker Installation Manual packed with icemaker for installation instructions Clearance and access information e 1296mm above counter e 305mm on side opposite tower below counter Counter front or rear panel must be removable for service access to both sides of dispenser and icemaker s if any e Below counter access to drain clean out required on utility side of dispenser See Icemaker Installation Manual packed with icemaker s for clearance requirements for automatic load dispensers Side view Front view 696mm I 305mm k 305mm omy A Oo o 553Mm 8 8 5 1 1 1264mm 153mm min Ly water i 712mm connection o hopper drain 432mm o o o E Y Y K 661mm 9 I 480mm ke 480mm 4J 305mm 794mm beverage mi
18. pense mechanism assembly see above Dispense assembly top view 2 Pull auger upward to clear auger tube right hand unit 3 Lift auger tube upward to clear dispenser top 4 Slide tube and bearing plate through auger tube gasket solenoid Dispense wheel removal 1 Remove drain pan assembly and bin access cover 2 Remove center thumbnut and threaded rod on dispense wheel assembly and lift wheel out front access opening d Auger motor assembly removal 1 Remove top cover quick 2 Remove one thumbnut on rear of motor bracket release ice chute 3 Lift motor bracket up and unplug electric pin quick disconnects 4 Remove motor assembly 10 Fig 3 side view front view auger dispense wheel auger motor side view stationary agitator rotating agitator wheel motor auger bearing plate aaa UE baffle plate wheel motor mounting plate Service Disassembly instructions for service requirements only NOT required for any cleaning procedure Dispense wheel motor removal Fig 3 Remove drain pan bin access cover and dispense wheel Remove stainless steel baffle plate under dispense wheel Remove two screws holding wheel motor bracket on bin Lift plate and motor up Unplug electric quick disconnects from motor
19. t shown Plug 2 lead male 502333 Not shown Plug 2 lead female 502334 14 Dispense assembly side view Dispense assembly side view right hand unit shown top view Reference Description Part 1 Gate dispense 502455 2 Linkage pin gate solenoid 502456 3 Pin quick release 141mm dispense gate 502102 4 Solenoid includes linkage pin 501961 5 Dispense mechanism assembly right hand unit 502458 Not shown Dispense mechanism assembly left hand unit 502496 6 Spring dispense mechanism 1 per side 501950 7 Chute ice 502457 8 Wrap dispense mechanism 502607 9 Bushing Ni liners 501249 10 Screw 8 32 x 5 16 502625 11 Pin spring 502624 15 Hopper side view Reference 1 Not shown 2 Not shown Not shown 3 4 Not shown 5 6 Not shown Not shown Not shown 7 8 9 Not shown Not shown Not shown Not shown Not shown 10 11 Not shown Not shown Not shown 4 i l E a E o S Ei K pm HE 2 n 4 oo Description Auger LH unit black stamped with 1 Auger RH unit gray stamped with 2 Plate auger bearing Tube auger right hand unit Tube auger left hand unit Wheel dispense includes stud and rot
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