MC825 Series Icemaker with Remote Condensing Unit
Contents
1. ia CA rt 60 HZ F ELECTRICAL BOX POWER SWITCH o i WTR PROBE PWR i L WATER K aba SENSOR UN 3 O COMPRESSOR VEERO DONEO IO oy a 14 lE O 2 SWITCH 7 39 i TE tl Ka EW A B aT Im oo TNT I i I j j i j I T BLUE E i i EE i 5 PURPLE a Ww i gt l I LAAN i z i w o OF 3 i m mT i gt WTR PROBE E3 i l 1 GEAR MOTOR AOA YELLOW WHITE 17 Normal operation Stage 2 Gearmotor start The water sensor verifies water in the float The Water OK LEDs WTR comes on At the same time the gearmotors come on lighting the Drive LEDs DR The gearmotor start windings are energized through a current relay The B E and WTR LED remain on 115 VAC 60 HZ WHITE POWER SWITCH ELECTRICAL BOX 3 YELLOW 3 YELLOW saa WHITE YELLOW PURPLE2. BLUE BLACK YELLOW BLUE eee RED i Solenoid Valve YELLOW WHITE i Sa PIA aulowy How o O WTR PROBE PWR m O DR oc O 2M O 6M O ND O wr O BT an BE O WHITE BLACK BLACK SIGNA SWITC WHITE IF 21 WATER SENSOR Normal operation Stage 6 Off cycle When the dwell time of 20 minutes has expired the B T LEDs go off The icemaker will go through the normal start up sequence when the bin level control signals for ice The WTR LED will remain on as long as the water sensor in the float reservoir senses water MB a BR BG BA RA ee NO NA AAS
3. O and WIR YELLOW 2 3 YELLOW PURPLE BLACK WHITE YELLOW O BT O BE ig Haw COMPRESSOR SWITCH RED WHITE o WTR PROBE Ea 12 Pyne BE Ip si WHITE BLACK SIGNA SWITC Lr BLACK WHITE YELLOW Solenoid Valve i 19 Normal operation Stage 4 Ice bin full The ice level control opens the B E LED goes out After a 10 second delay the LEDs C go off de energizing the relays which closes the liquid line solenoid valve The refrigeration system will pump down and turn off by the low pressure control Should the ice level control not remain open for 10 seconds the icemaker will continue to run The BT LEDs come on The gearmotors continue to run for 60 seconds The purpose of this function is to drive the remaining ice out of the evaporator and to boil off any refrigerant remaining in the evaporator 115 VAC oa bn a a a 60 HZ i ELECTRICAL BOX if POWER i SWITCH o g
4. Drive LEDs DRV lit on both boards 20M 60M or 2ND LED lit 1 No output on drive terminal DRV 2 Inoperative gearmotor Icemaker tripping on overload protection 1 Replace control board 2 Test replace gearmotor Refer to torque out troubleshooting Problem No ice production both gearmotors are running Step 1 Check circuit board LEDs on evaporator units Evaporators are iced up no ice production 1 Float reservoir empty 2 Air bubble in water supply line water in reservoir but not in evaporators 1 Check for defective water sensor WTR LED remains on when float reservoir is empty 2 Purge air from line No compressor LED C on primary board Compressor switch in off position Turn switch to on Both compressor LEDs C are lit suction line not cold 1 No power on fan terminals FAN on either control board 2 Contacts 4 amp 7 on either relay not closing when fan terminals FAN are energized 3 Defective liquid line solenoid valve coil 1 Replace defective board 2 Replace defective relay 3 Replace valve and or coil 25 Step 2 Check outdoor condensing unit Condensing unit not No power to unit running Low pressure control defective or incorrectly set Refrigerant leak Check that circuit breakers disconnect are on Check control adjust or replace Identify and repair leak Compress
5. Check system 1 Low refrigerant charge pressures 2 Low pressure control defective or incorrectly set 3 Tripping head pressure control 1 Check for leaks repair evacuate and re charge refrigeration system 2 Check control adjust or replace 3 Clean condenser check fan motor 26 Problem evaporator unit leaks water Step 1 Check evaporator unit Water overflowing evaporator drain pans 1 Drain lines clogged 2 Float level in reservoir set incorrectly or valve defective 3 Ice transport tubes not insulated 1 2 3 Clear drain lines Adjust float or replace reservoir assembly Insulate tubes Water leaking from bottom of evaporator O ring seal is broken Replace bearing housing O ring Problem Torque out 20M LED comes on at startup 1 Gearmotor does not run draws approximately 7 to 8 amps 2 Gearmotor does not run draws approximately 13 to 14 amps 3 Gearmotor runs briefly draws approximately 10 to 11 amps Gearmotor starting relay is defective Replace relay Gearmotor is locked Replace gearmotor Gearmotor starting relay is defective Replace relay Icemaker makes ice then 20M LED comes on 1 Mineral build up on evaporator surface 2 Kink in ice transport tube 3 Ice transport tube ruptured internally 4 Worn evaporator bearings 5 Bin level control remains in closed position 6 Bin t
6. dispenser 23 Status lights DR _IfON DRV terminal is energized C If ON COMP and FAN terminals are energized If ON overcurrent has occurred on gearmotor 20M in past 20 minutes 7 If ON overcurrent has occurred on gearmotor but 60M i j successfully restarted in the past 60 minutes 2ND If ON overcurrent has occured on gearmotor twice and has shut down If ON water sensor detects water WTR If OFF water sensor does not detect water If BLINKING water sensor detected loss of water B T If ON delays restart of IM for 20 minutes B E If ON bin stat indicates need for ice a BAGAY Recognizes Compressor Recognizes conductivity switch 24V to 120V through closed terminals bin signal from See Diagnostic sequence no water above See Diagnostic sequence motor over current condition above Service procedures Evaporator disassembly Fig 11 1 Disconnect power to icemaker and shut off water to icemaker 3 Drain evaporator and float tank 4 Disconnect plastic tubing from evaporator water inlet drain pan stub compression nozzle tubing and reservoir overflow tubing from secured clip 5 Disconnect ice transport tube from compression nozzle 6 Remove nut and upper vee band coupling from top of evaporator 7 Lift top bearing assembly straight up with a slight rotating motion and remove 8 Remove ice compression loop located at top of auger 9 Lift auger straight up and out of evaporator
7. 15 3 7 Part 500504 502920 502921 502922 502924 00109728 502925 502724 502726 502830 00106534 00107045 00112847 502220 502079 00107060 501191 00110536 501966 501753 501754 00107052 Control box Reference N Description Control board Relay Switch rocker Miscellaneous Description Not shown Not shown Not shown Not shown Not shown Not shown Not shown Transport tube 10 ft 3m for units with remote I M Transport tube 20 ft 6 1m for units with remote I M Transport tube sold by the foot Transport tube insulation sold by the foot Follett QC4 FL4S water filter system includes FL4S primary cartridge and head coarse pre filter and head pressure gauge flushing valve assembled and installed on mounting bracket Follett FL4S primary replacement cartridge Everpure coarse pre filter cartridge 30 Part 00106690 501369 502209 Part 502522 502523 500366 501176 AFSYSTMFL43 AFCARTFL4S AFPRECART Evaporator Reference Description Xa BB ON Oo 8 9 10 11 12 13 14 16 17 18 19 20 21 22 23 All above Not shown Not shown Coupling vee band includes nut Bearing assembly top Loop ice compression beveled Auger Evaporator includes insulation jacket 502740 O ring bearing housing Bearing assembly bottom includes O rings and condensate shield O ring mounting base Shield condensate Screw Allen 1 4 20
8. 5 13mm MTG HOLES Installation Icemaker performance is very sensitive to the quality of installation To ensure proper performance ease of service and warranty coverage it is critical that you follow the requirements detailed in this manual If you cannot meet these requirements or have questions call our technical service group immediately at 800 523 9361 or 610 252 7301 System layout Condenser unit 8 204mm N i 60 24 1524mm 610mm Discharge air a 4 Air flow V 8 a Clearances Installation Specifications Outdoor ambient temperature range 20 F 130 F 7 29 C 54 4 C Indoor ambient temperature range 50 F 90 F 10 C 32 C Evaporator 12 305mm 6 153mm Refrigeration line elevation specifications Condenser unit 6 153mm Installations with condenser unit above indoor unit ald Maximum line require a suction line S trap at the bottom of the rise instal 35 ft F required 10 7m Installation with condenser unit elevations above 20 ft 6 1m om T require an additional S trap at the midpoint of the rise 6 1m Maximum line rise must not exceed 35 ft 10 7m Maximum line set length must not exceed 100 feet 30 5m Max line drop must not exceed 15 ft 4 6m Condenserunit Note Th
9. 10 Remove nut and lower vee band coupling from bottom of evaporator 11 Lift evaporator to clear bottom bearing assembly 12 Loosen hex head bolt in side of mounting base with 5 16 wrench and lift lower bearing assembly 13 Remove condensate shield 14 Remove 4 Allen head machine screws holding mounting base to gearbox 15 If replacing evaporator remove compression nozzle from evaporator port Evaporator reassembly Fig 11 Clean gearmotor boss output shaft and shaft well Install drain pan and evaporator mounting base Fill gearmotor shaft well with food grade grease Install condensate shield and seat against gearmotor boss Install bearing O ring in groove in evaporator mounting base Lower bottom bearing assembly into evaporator mounting base NG oo BO NS While maintaining a slight downward pressure on bottom bearing assembly tighten hex head bolt with a 5 16 wrench 8 Position evaporator over lower bearing assembly and align grooves with pins in bearing assembly 9 Install vee band clamp and nut and tighten to 70 in Ib 10 Place auger in center of evaporator and rotate to mate with drive pin 11 Install ice compression loop orienting loop 12 Install upper bearing and seal assembly rotating bearing to slip pin into auger slot 13 Install upper vee band clamp and nut and tighten to 70 in lb 14 If evaporator was replaced reinstall compression nozzle ON New evaporator Gearmotor replacement
10. BLACK WHITE o b WTR PROBE PWR 7 EF o DR po oc COMPRESSOR O 2 O 2 SWITCH O 60M O ND p G o lo O O mor rw Para o F amimi j j RED WHITE B ti 2 o a WTR PROBE O o CJ O O O O O PWR WHITE WATER SENSOR WHITE BLACK BLACK YELLOW WHITE 18 Normal operation Stage 3 Refrigeration start Seconds later the C LEDs come on and the coils of both of the relays are energized closing their normally open contacts This completes the circuit to the coil of the liquid line solenoid valve The valve opens increasing the pressure in the suction line The low pressure control then starts the condensing unit As the gearmotors reach normal speed the current relays re open dropping out their start windings The icemaker is now in normal icemaking mode 115 VAC 60 HZ BLACK POWER SWITCH o mmk ELECTRICAL BOX BLACK WHITE 2 3 1 fi 1 1 i i 1 WTR PROBE t PWR DR oc O 20M O 60M
11. PA 18040 USA Toll free 800 523 9361 e 610 252 7301 00108647R03 Innovative solutions inspired by ice Fax 610 250 0696 e www follettice com 03 05
12. 1 Disassemble evaporator as described above 2 Disconnect the wire connectors 3 Remove 4 screws holding gearmotor mounting plate to base of icemaker and lift gearbox and motor clear of icemaker Fig 12 1 4 Remove machine screws holding mounting plate to motor Fig 12 2 5 Install new motor in reverse order 24 Fig 11 Fig 12 Troubleshooting Problem No ice production evaporator gearmotors not running or only one gearmotor running Step 1 Check circuit board LEDs on evaporator units Indicator Possible cause Corrective action Power LEDs PWR not on No power to evaporator unit Check that unit is plugged in circuit breakers are on Bin signal LEDs BE not on 1 Defective bin thermostat 2 Dispenser bin signal switches turned off 1 Check ice level control 2 Return to on position Water OK LED WTR on primary board not on 1 No water in float reservoir 2 Sensor incorrectly installed 3 Sensor defective 1 Check water supply to reservoir 2 Check that both sensor probes are in the reservoir water 3 Test sensor by jumping out sensor connection on board Bin timer BT LEDs on Bin timer BT LED on and water OK LED WTR on primary board flashing Normal shutdown on bin thermostat Plugged water filter or water strainer Allow 20 minutes to make sure icemaker restarts Verify integrity of water supply
13. 60Hz 1 phase Max fuse 30 amps Minimum circuit ampacity 17 6 amps Weight Evaporator plumbing Evaporator unit Water 3 8 push in water inlet 130 Ibs 59kg Drain 3 4 MPT Condenser unit Note Drains should be hard piped and insulated Maintain at 265 Ibs 102kg least 1 4 per foot 1cm per 31cm run slope on drain line run Evaporator connections Ice tranport tube outlet remote only Low pressure refrigerant line suction line High pressure refrigerant line liquid line Bin thermostat cord Power cord Water line 3 8 OD tubing Drain 3 4 MPT Ice transport tube outlet remote only Low pressure refrigerant line suction line Ice transport tube outlet remote only High pressure refrigerant line liquid line Power cord Water line 3 8 OD tubing Drain 3 4 MPT NG High pressure line liquid line Power connection Low pressure line suction line System details Remote mount Evaporator Unit Top mount evaporator unit evaporator unit Evaporator unit plug configuration Front view Side view Side view NEMA 5 15 24 25 18 00 14 00 616mm fb 458MM 4 serice k 838MM service loop loop 17 00 432mm Condenser unit Condenser unit Rear view Top view WIDTH MAX W Rt LENGTH MAX 25 5 L 648mm BHE 30 75 A i 781 mm
14. for credit under the following conditions 1 The equipment is new and unused 2 A return authorization number has been issued by customer service within 30 days after shipment 3 Follett receives the equipment at the factory in Easton PA within 30 days after the issuance of the return authorization number 4 The equipment must be returned in Follett packaging If the packaging has been damaged or discarded Follett will forward at the customer s expense new packaging Note Return freight charges are the responsibility of the customer If equipment is returned and is damaged because of improper packaging Follett Corporation will not be held responsible Credit will be issued when The equipment has been inspected by Follett and deemed suitable to be returned to stock Note A 15 restocking charge will be deducted from the credit If the cost to return the product to stock exceeds 15 the actual cost will be deducted Welcome to Follett Follett icemakers enjoy a well deserved reputation for excellent performance long term reliability and outstanding after the sale support To ensure that this icemaker delivers that same degree of service we ask that you take a moment to review this manual before beginning the installation Should you have any questions or require technical help at any point please call our technical service group 800 523 9361 or 610 252 7301 Before you begin After uncrating and removing all pac
15. 1 3 WTR PROBE a i PWR WATER cq ete SENSOR a O c COMPRESSOR DONE Rae ee O SWITCH sp RED PURPLE YELLOW WHITE O WTR PROBE E9 PWR YELLOW BIN SIGNAL CORD O oO WHITE BLACK WHITE AN O BT SIGNA n E SUG LIP 3 Ir BLACK YELLOW 1 Solenoid Valve 1 MUN _ a YELLOW Songet ae WHITE 20 Normal operation Stage 5 Off cycle time delay The B T LEDs will remain on for 20 minutes The icemaker will not start while the B T LEDs are on To restart the icemaker for troubleshooting purposes depress both reset buttons to clear the control boards 115 VAC 60 HZ POWER SWITCH 3 wri YELLOW PAA AA AA AA ee a PURPLE YELLOW _ OF D Q PROBE ES PWR O DR oc O 20M O tom O No wr Clo at Gma E Lie COMPRESSOR SWITCH RED
16. 2 3 4 5 pumps down The condensing unit shuts off on the low pressure control The 20M LED is turned on After 20 minutes the 20M light is turned OFF and the machine goes through the normal start up described above If the restart is successful the 60M light is turned ON and remains ON for 60 minutes This alerts the user to a problem in the drive system If the icemaker runs without an overcurrent condition during the 60 minute period the 60M LED will go out and the icemaker will continue normal operation If the restart is unsuccessful or if the board detects another 3 amp current during the 60 minute period the 2ND light is turned ON and the machine shuts down and can only be started by pressing the reset button Diagnostic sequence no water If the water level in the float reservoir drops too low three things happen The WTR light is turned OFF 2 The ice machine shuts down 3 The BT light turns ON If water is restored the WTR light will flash the BT light will turn OFF after 20 minutes and the machine goes through the normal start up described above The flashing light can be cleared by pressing the reset button J WTR PROBE RESET o BIN LOW V p C O O HP SW LF VOLTAGE BIN PWR O os Oc SL O 60M a Om O BT a bin thermostat on storage bin
17. 5 100 ft 22 9 30 5m 10 Ibs 4 5kg 100 ft 30 5m Consult factory 10 Insulate entire suction line including shut off valves to prevent condensation 11 Adjust the condenser unit low pressure control set points to a cut in of 30psi and a cut out of 10psi Pressure adjustment 1 Startup and test ee Turn cut in adjusting screw Fig 7 1 Fig 7 clockwise until indicator points to 30psig on cut in scale Cut in MUST be adjusted first Turn cut out adjusting screw Fig 7 2 counter clockwise until indicator points to 10psig on cut out scale Do NOT adjust high pressure cut out adjusting screw Fig 7 3 Control is preset cut out to cut out at 450psig scale Plug evaporator unit in Turn dispenser power ON if applicable Turn condenser unit power ON Check to make sure unit makes ice Put a piece of ice on bin thermostat and verify that the evaporator unit shuts OFF Restart icemaker Operation Preventive maintenance Periodic cleaning of Follett s icemaker system is required to ensure peak performance and delivery of clean sanitary ice The recommended cleaning procedures that follow should be performed at least as frequently as recommended and more often if environmental conditions dictate Cleaning of the icemaker system in most cases should be performed by your facility s maintenance staff or a Follett authorized service agent Regardless of who performs the cleaning it
18. 8c a Remove ice compression nozzles Fig 9 1 Soak in Solution B b Descale drain pans Fig 9 2 by grasping firmly an gently bending up and down Vacuum residue out c Inspect all drain lines Clean as necessary with Solution B 9 Turn bin signal switch Fig 8 1 on electrical box of icemaker OFF 10 Drain Solution B through float evaporator drain line Fig 7 1 Rinse evaporator by filling reservoir Fig 7 2 with potable water and draining evaporator through float evaporator drain line Fig 7 1 three times Reinsert hose to hose clip and plug into end of drain line Fig 7 1 11 Connect ice transport tubes Fig 9 3 directly to evaporator outlet ports without ice compression nozzle Fig 9 4 Note If bin will not be cleaned at this time place a large pan in the storage area to catch ice or connect a separate ice transport tube to evaporators and divert ice into a separate container 10 12 13 14 15 16 17 18 19 20 21 22 23 24 Fill reservoir Fig 7 2 with Solution A Turn bin signal switch Fig 8 1 on electrical box of icemaker ON to allow gearmotor to run Wait 10 minutes Turn compressor switch ON Fig 8 3 Keep reservoir Fig 7 2 full of Solution A while making ice for 20 minutes Turn compressor switch OFF Fig 8 3 Rinse ice compression nozzles Fig 9 1 with water and reinstall Drain any remaining sanitizing solution from reservoir through fl
19. A nian ee SANA AK AA es 60 HZ i ELECTRICAL BOX i t 1 i 1 POWER H i 1 O i asta WTR PROBE 1 PWR i 1 i z i WHITE 3 CJ WATER i SENSOR WHITE O DR i 4 L 3 pag O COMPRESSOR T i 0 O 2m 1 Hina alas ail Waaa i LIZ E O O 6M SWITCH T TAi mg ppa H 8m 1 1 foi A B aa cl 1 NpQe ar T GO B z g BLUE Olfe le A 9 i i ig WW i m PURPLE m ze he 1 KU 1 De Ll WHITE i Ini r SK i me 3 T E ou ot o 5 x N m i Bar Pa Si 1 1 a N 2 O 1 MM i W oO 1 gt WTR PROBE ES H O PWR i GEAR MOTOR WHITE o lt N WHITE O DR E O ZN i 1 3 RESET O C 5 a i Po Uae OB Sa T z 3 J b gt i ao Kab 25 Hom Fw l N O O 6 1 me war ex BET 1 1 I H 1 1 a i o x a S ga BLUE i Ip 2 3 LI a i 1 1 7 tt l ma RED T Ll Il I 1 KO 1 Aji t 1 INpi 1 1 1 1 USO EE a 1 i i i i i DI i E e E EA 1 i 1 i Ea Ce Solenoid Valve l i l Z i I gt oi i i GEAR MOTOR i H Hd APAR MOTOR 22 Diagnostic sequence motor over current condition If either of the circuit boards senses a current over 3 amps five things happen The DR LED goes out the DRV terminal is de energized and the gearmotor shuts down The C LED goes out the FAN terminal is de energized cutting power to the coil of the relay The relay contacts open cutting power to the coil of the solenoid valve and the condensing unit 1
20. MC825 Series Icemaker with Remote Condensing Unit Slee are eb Installation Operation and Service Manual www follettice com Remote condensing unit Evaporator unit Following installation please forward this manual to the appropriate operations person BOLLE 801 Church Lane e Easton PA 18040 USA Toll free 800 523 9361 e 610 252 7301 U Innovative solutions inspired by ice Fax 610 250 0696 e www follettice com 00108647R03 Table of contents Welcome to Follett Corporation NAAN AA AA 3 Specifications MA PAA PAA APP PAPA 3 Installation 171111111511xxfqiqiqiqiqiqiqiqiqcqicqiqi 5 System layout 2 0 a 5 Condenser unit installation 1712725xx x qi1fqfqi1q fqfqiqjiqiqiqcji6qc 5 Evaporator unit installation 11777722 2 6 Installing to ice storage and transport bin top mount eee eee e eee ee eee e eee eens 6 Installing to VU155 or VU300 series dispenser e eerste e eee eter eee e teens 7 Refrigeration Iine ingtall aton aask are Rac ee ere yee nea nen irr urna ay ace Pacer eee mean 9 System startup 0 0000 00000000 9 Operation ss ssessesessosesssssasevsa sisati DARE U NA ANAKAN AG da cet EL NAK BELA PAL tales 10 CICANING crccatdesretecersnshadessieodatans Ei EE a AKA NA
21. NANA ANAN 10 Weekly exterior evaporator unit care aaa 10 Recommended semi annual evaporator unit cleaning aaa 10 SERVICE KINAT sie die dics NG see EEE EEE EAE EEE Sore Wee aude aes ee END ELENA awa 12 Condenser Unit operation 6 cscce esc ee esc es eee cence eee ee eens eee n scents eeeneies 12 Evaporator unit operation 12 Technical specifications AA AA APP 13 Refrigeration system diagram a aaa 13 Evaporator unit wiring diagram BATO E TTE E EE E EE E 14 Condensing unit wiring diagram ssssssssessssessss PAA kamen 14 Water system diagrams iss Esa as RAR NAA GATA AGARAN AABANGAN AA 15 Harvest system diagram 4 15 Refrigerant CHANGES asana manmanan mana saa Daranak animes aba eara T16 Evaporator unit electrical control system operation s aaa 17 Service procedures cece cece ee ee eee PA a Evaporator disassembly sistuscastied Nana a NGPA NEE AG atie KARE ENNA AA ARNAN E 24 Evaporator reassembly kapi ual pag T Satsagnine eal de eat 2A Gearmotor replacement sete dna isha lajh dis iard AA wee a Aa ea earn aoe 24 Troubleshooting 644 2405 icon dscneas cecaeh a a NAAN a NAA 25 Replacement parts essecssrriserideikotrin radinio rianan e inou LIB NARANASANG EEA 28 Follett Corporation Equipment Return Policy Follett equipment may be returned
22. bes may NOT have dips may NOT have bends of less than 6 153mm radius and may NOT have splices joints Cut insulation off tube where tube enters grommet Slide end of tube without insulation through grommet and run to evaporator port Install a section of insulation on tube from grommet to evaporator port Slip supplied hose clamp over free end of tube Pull insulation back from free end of tube 10 Push tube on evaporator port 11 Position clamp behind lip on evaporator port and tighten clamp 12 Connect bin thermostat twist lock cord to dispenser plug Install refrigeration line Note The installer of the refrigeration line set must be USA Government Environmental Protection Agency EPA certified in proper refrigerant handling and servicing procedures A qualified person must perform all roof or wall penetration Do not form unwanted traps in refrigeration lines A service loop is not considered an oil trap Never coil excess refrigeration tubing The compressor oil rapidly absorbs moisture Minimize the exposure of the refrigeration system by not releasing the condenser unit or evaporator unit holding charge until all line connections are finished and the system is ready for evacuation To prevent oxidation of the copper purge line set and condenser unit with dry nitrogen while brazing For lines longer than fifty feet add one additional pound of R404A refrigerant for every 25 feet of line run up to 100 feet see refrige
23. e four systems work together to accomplish the production and harvesting of ice A problem in any one of these systems will result in improper operation of the entire ice production cycle When troubleshooting the icemaker it is important to analyze the entire system operation to determine which system is not functioning properly then pinpoint the component within that system that is malfunctioning Determine what corrective action must be taken before making any adjustments or replacing any components The icemaking process The Follett icemaker uses a stainless steel jacketed evaporator and operates on a continuous freezing cycle Water is supplied to the evaporator from the water reservoir where the water level is controlled by a float valve This valve also shuts off the water supply when the icemaker is not running When the icemaker is running a layer of ice forms on the interior surface of the evaporator This ice is continuously removed by a slowly rotating 12 RPM auger The auger carries the ice upward into the cavity formed by the top bearing housing and the compression loop where it is compressed to remove excess water When the ice reaches the desired hardness it rotates within the cavity and is forced through a discharge port and compression nozzle and into the ice transport tube The discharge tube and compression nozzle are slightly restricted to further compress the ice and produce the desired hardness As the formation of ice continu
24. e service loop is not included when calculating the Siasii length rise or drop of the tubing run required Water pressure 10 psi 70 psi N wi Cat Water temperature 50 F 90 F 10 C 32 C E tor unit level Install condenser unit pas o ssd Mount condenser unit 1 Level unit E ondenser unit 2 Securely attach base of unit using holes found in base plate Maximum line a 15 ft N TI 4 6m Electrical connection Refer to wiring schematic located in condenser unit electrical box Note Electric disconnects required within 10 ft 3m for all hard wired connections Note Install in accordance with NEC and local electrical codes Install evaporator unit Installation overview The evaporator is designed to be installed in the following applications 1 Ice storage and transport bins top mount Fig 1 1 2 VU155 or VU300 series ice and beverage dispensers Fig 1 2 Installation checklist The following are used for all installation applications Locate and level unit Routing and mounting ice transport tubes Routing and mounting bin thermostat Plumbing for water Plumbing for drain Routing and connecting refrigerant lines Start up and testing aai a a NG a Fig 2 Installing to Ice storage and transport bins top mount Mount evaporator unit 1 Verify bin top is level Note Do NOT weld or permanently attach evaporator unit Removal may be necessary for service 2 Position icemake
25. ervice valve with service port 13 Evaporator unit wiring diagram WATER SENSOR SIGNAL COMPRESSOR SWITCH N N N i N MOvId l N N N N N N N LL Novid HE 3LIHM EEEE mg Tong ga 00000000 HEN o fo 00000000 o ENE ga O U i i Ke o 2 25 o CJ O m 0 Blue ELECTRICAL BOX T LP PURPLE 4 HP MOT13A MOT13A bual pressure contro Crankcase heater Fan Orange Black Black Black Blue L2 QO GND L1 Condensing unit wiring diagram GEAR MOTOR 115 VAC 60 HZ L 14 Refrigeration charges R404A icemaker charge specifications Line Run Charge 0 50 ft 0 15 2m 8 Ibs 3 6kg 50 75 ft 15 2 22 9m 9 Ibs 4 1kg 75 100 ft 22 9 30 5m 10 Ibs 4 5kg 100 ft 30 5m Consult factory Refrigeration replacement requirements Non contaminated refrigerant removed from any Follett refrigeration system can be recycled and returned to the same system after completing repairs Recycled refrigerant must be stored in a clean approved storage container If additional refrigerant is required virgin or reclaimed refrigerant that meets ARI standard 700 88 m
26. es ice in the transport tube is pushed through the tube to the storage compartment in the ice dispenser or ice storage bin A solid state control board located in the electrical box of the icemaker controls the normal operation of the icemaker and monitors gearmotor torque This control board will shut down the icemaker should an over torque condition occur It is very important that you familiarize yourself with the operational sequences detailed in this manual before attempting to service the icemaker 12 Technical specifications Refrigeration system diagram High side service valve with service port Condenser unit Low side service valve CH with service port g Compressor Condenser Head control valve 215 PSI S Check valve Receiver i 14 pounds Filter drier with sight glass IT SINE NE NE NE AH EH NE NE NE NE NENE NENA Low side service port Evaporator unit XU XU NUT NUT NUT NUT NUT NUT NUT NY NUT Low side J Low side refrigeration service valve line run with service port High side E refrigeration line run Thermostatic o expansion valve High side Sight glass Filter drier service port High side Solenoid valve s
27. hermostat capillary tube incorrectly mounted 1 3 5 6 Clean evaporator with liquid icemaker cleaner Eliminate kink and check that tube routing complies with installation guidelines Replace ice transport tube Inspect bearings for roughness binding replace if necessary Replace ice level control Ensure that ice contacts capillary tube before backing up in ice transport tube Refer to dispenser manual for proper mounting 27 Replacement parts Panels Reference OANDOOARWND Description Cover top Panel rear Panel right side Panel left side Panel front remote Panel front top mount Base evaporator unit Grommet ice Cover electrical box 28 Part 00110452 00110460 00110478 00110486 00110494 00110502 00110510 501921 00110528 Evaporator unit Reference ot shown OMDNOOAZWNH 15 Not shown Not shown Not shown Not shown Not shown 16 8 9 Description Float amp reservoir Strainer water Valve water shut off Clip shut off valve Fitting water inlet Fitting drain Elbow water Filter drier Expansion valve Insulation TXV Insulation TXV bulb Sight glass Coil solenoid valve 13 16 11 12 Ice compression nozzle Reservoir water line Service valve Evaporator water feed line Y fitting water feed line Drain line evaporator Elbow drain line Tee drain line Solenoid valve 29 4 14
28. is the operator s responsibility to see that this cleaning is performed according to the schedule below Service problems resulting from lack of preventive maintenance will not be covered under the Follett warranty Weekly exterior evaporator unit care The exterior may be cleaned with a stainless cleaner such as 3M Stainless Steel Cleaner amp Polish or equivalent Recommended monthly cleaning of condenser air cooled icemaker only Solution A Sanitizing solution Prepare 1 gallon 3 8L of 200ppm 5 25 Sodium Hypochlorite solution mix 1 oz household bleach to 2 gallons water or equivalent Solution temperature must be at least 120 F 48 9 C Solution B Ice machine solution Following manufacturer s instructions prepare one 7oz packet of Follett SafeCLEAN Ice Machine Cleaner or equivalent Solution temperature must be at least 120 F 48 9 C 1 Remove evaporator unit panels required to gain access to water reservoir components Fig 7 and electrical control box Fig 8 Turn compressor switch OFF Fig 8 3 Dispense all ice from dispenser Shut OFF water valve Drain water from reservoir through float evaporator drain line Fig 7 1 Reinsert hose into hose clip Fig 7 3 Remove water reservoir lid and fill reservoir Fig 7 2 with Solution B a bh O N D 7 Restart icemaker and allow gearmotor to run with the compressor off for 15 minutes 8 While waiting 15 minutes follow step 8a through
29. king 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 Important cautions 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 Should local codes require a hard wired connection and or shielded wiring eliminate the cord s and plug s and follow the appropriate field wiring diagram on the following page Always disconnect power before cleaning dispenser Failure to remove all sanitizing solution may result in health hazard MC825RVR Icemaker configuration R Satellite fill T Top mount Application B Bin H Harmony V Vision Condenser type R air cooled remote condensing unir N air cooled no condensing unit for connection to parallel rack system Icemaker capacity and refrigerant 825 611 Ibs 277kg day R404A Icemaker model series MC Maestro Chewblet Specifications Electrical Refrigeration Separate circuit and equipment ground required Liquid line 3 8 Evaporator unit Suction line 5 8 Standard electrical 120V 60Hz 1 phase Max fuse 15 amps Note A rack system requires a reserve Condenser unit capacity of 8000 BTU hr at 2 F 17 C evaporator temperature Standard electrical 220V
30. nsure correct installation Call factory for assistance if you are unable to meet these requirements Note VU155 or VU300 series dispenser consult dispenser manual for proper transport tube mounting in dispenser manual or contact Follett technical service 1 Push one end of the supplied ice transport tube s through hole s provided in side of dispenser 2 Route tube into ice tube bracket inside dispenser and engage bracket tabs in holes located in end of ice transport tube s Fig 5 Fig 5 Ice tube retainer bracket Fig 4 If connecting an MC825 evaporator unit to a manually filled Correct installation U U Incorrect installation No dips No joints No bends of less than 6 153mm 1 25mm ice tube retaining bracket ice tube ice tube Fig 6 Bin thermostat capillary tube mounting Front view VU155 Front view VU300 ice tube retaining we bracket thermostat thermostat tabs in ice tube ice tube ice tube ice tube retainer bracket retaining engage holes in ice bracket thermostat tube and hold tube in place ONO 9 Verify bin thermostat capillary tube is mounted correctly Fig 6 Run tube from dispenser to icemaker and cut to length Note Tu
31. oat evaporator drain line Fig 7 1 Fill reservoir Fig 7 2 with 120 F 49 C water Empty water through float evaporator drain line Fig 7 1 Repeat 3 times Turn ON water to icemaker Turn compressor switch ON Fig 9 3 Replace reservoir cover and any panels removed to clean icemaker Make ice for 15 minutes to flush any remaining solution from system remote icemakers with long transport tubes may take longer to flush out Discard this and all ice made during sanitizing Replace float reservoir lid and evaporator unit panels Fig 10 Service Condenser unit operation The condensing unit is weatherproof and equipped to operate in ambient temperatures from 20 F 130 F T 29 C 54 4 C A dual pressure control provides compressor protection from excessive head pressures pumps the refrigeration system down and shuts the condensing unit off when the solenoid valve on the evaporator unit is closed Low ambient operation Reliable operation at low ambient temperature is achieved with a pumpdown cycle a crankcase heater and a head pressure control valve As the ambient temperature falls and the head pressure decreases the valve maintains a minimum head pressure of 215 psi by bypassing discharge gas around the condenser to the receiver to increase the pressure at the condenser outlet This backs liquid refrigerant up in the condenser to reduce the area available for condensing which increases the head press
32. or not Defective starting relay running Defective starting capacitor Defective run capacitor Defective compressor Problem Low ice production Step 1 Check evaporator unit Replace relay Replace capacitor Replace capacitor Replace compressor Bubbles in sight 1 Mineral build up on evaporator surface glass and or incorrect system pressures Dirty condenser coil Restricted airflow to condenser High outdoor temperature Defective condenser fan Low refrigerant charge DAA ON 7 Insufficient refrigerant charge for low ambient operation 8 Defective head pressure control valve 9 Inefficient compressor 10 Faulty expansion valve s ak Clean evaporator with liquid icemaker cleaner Clean condenser Remove obstruction Verify ice production capacity Replace condenser fan Check for leaks repair evacuate and re charge refrigeration system 7 Check system charge oOo ON 8 Replace head pressure control valve 9 Replace compressor 10 Replace expansion valve Problem Outdoor unit cycles frequently during off cycle Step 1 Check evaporator unit Suction pressure rises 1 Leaking liquid line solenoid valve during off cycle 2 Excessive leak back through compressor valves 1 Replace solenoid valve 2 Replace compressor Problem Outdoor unit cycles intermittently during run cycle Step 1 Check condensing unit
33. r on bin a If new storage bin and icemaker position icemaker with connections facing rear of bin b If using existing bin place supplied gasket 2 5 64mm from front of bin Position icemaker with utility connections facing rear of bin Routing and mounting ice transport tubes Ice transport 1 Remove icemaker top panel and louvered side panel tubes 2 Remove transport tubes Route tubes from inside bin through gasket and connect to evaporator port Fig 2 3 Tighten hose clamp to secure tubes to ports Fig 3 Routing and mounting bin thermostat 1 Insert thermostat through clamps on transport tube as shown Fig 3 Plumb for water and drain 1 Connect drain to 3 4 MPT fitting in rear of unit 2 Connect potable water supply plastic or copper tubing to 3 8 push in connector in rear of unit transport tubes thermostat capillary tube Bin top Installing to VU155 or VU300 series ice and beverage dispensers Mount evaporator unit Note Locate unit within 20 ft 6 1m of dispenser 1 Level unit 2 Securely attach base of unit using holes found in base plate Note Do NOT weld or permanently attach evaporator unit Removal may be necessary for service 3 Remove front panel of evaporator unit Routing and mounting ice transport tubes Fig 4 Incorrect ice transport tube installation can result in wet ice and dispensing problems Follow guidelines below to e
34. ration charge table Consult factory for line runs beyond 100 feet It is recommended that both liquid and suction lines are run and insulated together for the first 15 feet from the condensing unit This protects the system from sub cooling loss and or liquid slugging the compressor oar wh N Make line set run from the condenser unit to the evaporator unit in accordance with all specifications found in the Installation specifications section Braze all connections Do not overheat shut off valves on condenser unit or evaporator unit Pressurize line sets and check for leaks Bleed off line set Open the liquid line valve and suction line valves on evaporator unit Energize liquid line solenoid valve Valve can be energized by supplying electrical power to evaporator unit and filling float reservoir and evaporators with water Do NOT connect power to condensing unit until evacuation is complete and vacuum has been broken with R404A refrigerant Open the liquid line valve then the suction line valve on the condenser unit Evacuate refrigeration system to 500 microns or less Verify system holds vacuum for 30 minutes with the pump off and the system isolated Add 8 Ibs R404A to refrigeration system for up to 50 ft 15 2m line length See chart below for line length longer than 50 ft 15 2m R404A icemaker charge specifications Line Run Charge 0 50 ft 0 15 2m 8 Ibs 3 6kg 50 75 ft 15 2 22 9m 9 Ibs 4 1kg 7
35. ure to maintain the 215 psi set point A check valve is installed in the liquid line between the receiver and the condenser to prevent liquid migration from the receiver to the condenser during the off cycle The crankcase heater works in conjunction with a continuous pumpdown cycle to prevent accumulation of liquid refrigerant in the compressor oil during the off c This prevents compressor damage due to a flooded compressor start The low pressure control will start the condensing unit anytime the low side pressure rises above the 30 psi set point and pump the refrigerant out until the pressure falls to 10 psi The crankcase heater which is energized whenever the condensing unit has power keeps the compressor oil warmer than the coldest location in the system This minimizes off cycle refrigerant migration If power to the condensing unit is interrupted after the system is charged the compressor should not be started unless the crankcase heater has been energized for at least four hours immediately prior to compressor startup However the compressor can safely be started during the refrigeration system charging process without the warm up period once sufficient refrigerant is in the system to maintain a positive pressure on the suction side of the compressor Evaporator unit operation Follett s icemaker consists of four distinct functional systems 1 Refrigeration system 2 Electrical control system 3 Water system 4 Harvesting system Thes
36. ust be used In the event of system contamination for example a compressor burn out refrigerant leak presence of non condensibles or moisture the system must be repaired evacuated and recharged using virgin or reclaimed refrigerant that meets ARI standard 700 88 Follett Corporation does not approve of recovered refrigerants Improper refrigeration servicing procedures will void the factory warranty Evaporator unit electrical control system operation The wiring diagrams which follow illustrate the circuitry of Follett icemakers used with ice dispensers Both normal operation of the icemaker Stages 1 6 and non normal diagnostic sequences showing torque out Stages 7 9 for use in troubleshooting icemaker problems are shown Normal operation Stage 1 Start up Power is supplied to L1 on the control boards The ice level control in the storage bin is closed completing the circuit between the terminals of the low voltage bin signal connection The control boards will now go through the start up sequence Less than 30 seconds will elapse as the water sensor located in the float reservoir checks for water in the reservoir The Bin Empty LED B E will be on The high voltage bin signal connection is used on all Follett ice dispenser applications The high voltage terminals respond to applied voltage of 24 to 240 volts from the dispenser
37. x 1 2 set of 4 Mounting base evap includes 501063 Bolt mounting base Gearbox amp motor assembly Compression nozzle with double drain Drain pan evaporator Clamp compression nozzle and screw Tubing compression nozzle drain s sold by foot Bracket drain hose Insulation jacket evaporator Relay start gearmotor Drip cover gearmotor Mounting base gearbox Evaporator amp gearmotor assembly Grease Chevron SRI 2 140z Oil gearmotor pint 31 Part 502735 502736 502110 502737 502725 500496 502738 501063 500744 501080 502733 502227 502730 502220 502727 502226 500680 502739 502740 502742 502744 502729 502743 501111 502775 Condensing unit Top View fl 11 Side View Reference Description Part 1 Compressor 00110544 Not shown Starting capacitor 00110569 Not shown Run capacitor 00110577 Not shown Starting relay 00110585 2 Crankcase heater 00123042 3 Head pressure control valve 00110619 4 Check valve 00110650 5 Filter drier sight glass 00123059 6 Receiver 00110627 7 Receiver service valve 00110692 8 Service valve suction line 00110643 9 Condenser 00110668 10 Condenser fan motor 00110601 Not shown Condenser fan blade 00123067 11 Condenser fan guard 00123075 12 Shroud 00120170 BOLLAEVTT 801 Church Lane e Easton
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