MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines Installation, Operation and Service Manual After serial number K39863 Please visit https://www.follettice.com/technicaldocuments for the Operation and Service manual for your unit. MCD425A/W_S R425A/W MCD425A/W_T MFD425A/W_T P425A/W Welcome to Follett Follett equipment enjoys a well-deserved reputation for excellent performance, long-term reliability and outstanding after-the-sale support.
Contents Welcome to Follett. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check your paperwork to determine which model you have. Follett model numbers are designed to provide information about the type and capacity of Follett equipment. Following is an explanation of the different model numbers in the 425 series.
Specifications Electrical §§ Each ice machine and dispenser requires a separate circuit with electrical disconnect within 10 ft (6 m). §§ Equipment ground required. §§ Standard electrical – 115 V, 60 Hz, 1 phase. §§ Connect to a dedicated 15A circuit. §§ Maximum ice machine amperage – 11A each. §§ Cord and plug provided on ice machine.
§§ Water regulating valve is factory set at 300 (±10) PSIG head pressure. §§ Readings within 10% of table values should be considered normal. Compressor data Locked rotor amps 58.8A Compressor current draw Air-cooled Ambient air temperature 60 F/15.6 C 70 F/21.1 C 80 F/26.7 C 90 F/32.2 C 100 F/37.8 C Amperage 6.3A 6.5A 6.7A 6.9A 7.1A High-side pressure (psi) 190 220 250 290 330 Low-side pressure (psi) 27 29 31 33 36 50 F/10 C 60 F/15.6 C 70 F/21.1 C 80 F/26.7 C 90 F/32.2 C 5.
Dimensions and clearances §§ Entire front of ice machine must be clear of obstructions/connections to allow removal. §§ 12" (30.5 cm) clearance above ice machine for service. §§ 6" (15.3 cm) minimum clearance between exhaust side of ice machine and any adjacent equipment. §§ MCD425A & R425A – 18" (45.7 cm) minimum, 10 ft (3 m) maximum clearance between discharge and air intake grilles. MCD425A/W_T MFD425A/W_T MCD425A/W_S R425A/W Front view — top mount Front view — air-cooled C F B 4.81" (12.
Cleaning Follett ice machines and dispensers, and their associated cleaning and sanitizing procedures, are designed for use with potable water sources. The presence, or suspected presence, of infectious agents may call for additional measures, including the replacement of components and more comprehensive disinfection measures. Follett recommends that these cleaning and sanitizing procedures be reviewed with the appropriate infectious agent subject matter experts to assure complete remediation.
CAUTION! §§ Wear rubber gloves and safety goggles (or face shield) when handling SafeCLEAN Plus solution. §§ Use only Follett approved cleaners. §§ Do not use solvents, abrasive cleaners, metal scrapers or sharp objects to clean any part of the dispenser. SafeCLEAN Plus Solution: Follow the directions on the SafeCLEAN Plus packaging to mix 1 gal. (3.8 L) of Follett SafeCLEAN Plus solution. Use 100 F (38 C) water.
Service Ice machine Operation (all models) Follett’s ice machine consists of four distinct functional systems: §§ Harvesting system §§ Water system §§ Electrical control system §§ Refrigeration system These 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.
Water system The water level in the evaporator is controlled by a fill solenoid (Fig 1) and level detecting sensors. Water sensing rods (Fig. 2) extend down into the reservoir at the end of the evaporator assembly. The system works via electrical conductivity as follows: One of the longest probes is a common. When water is between any of the other probes and the common, the PC board will sense the activation.
Electrical system ATTENTION! To prevent circuit breaker overload, wait 15 minutes before restarting this unit. This allows the compressor to equalize and the evaporator to thaw. Normal control board operation The PC board indicator lights provide all the information necessary to determine the machine's status.
Relay/triac output indication Each relay on the board has an indicator light associated with its output. For example, when the relay for the water feed solenoid is energized, the adjacent indicator light glows green. Flushing logic Off cycle: At the completion of off-cycle time delay, the machine checks for a cumulative one (1) hour of ice making time since the last off-cycle flush.
Electrical control system schematic BLACK #26 L1 L2/N GND DISP WHITE #25 GRN-YEL #24 BLACK #23 BLACK #23 BLACK #51 BIN CONTACT CLOSURE P2 N N N N N N N N ICE AUX P15 P16 T1 BLACK #01 L1 WATER AUX COMPRESSOR N D1 D2 D3 L1 D4 D5 K1 D16 L1 HI PRS P14 P1 S1 D19 MODEL SELECT D6 D7 D8 D22 P6 D9 P21 P9 P20 6 2 5 1 PROGRAM D21 D18 K3 D37 D20 P19 S2 P10 SERIAL COMM CURRENT SENS P3 D17 P17 WATER LEVELS D10 D11 D12 RESET POWER LOW BIN MAKING ICE SLEEP CYCLE TIME DELA
Note: The operation stage descriptions that follow are based on the unit containing the split-phase gear motor. Normal operation – Stage 1 Power is supplied to L1 of the control board, the POWER LED light begins flashing. The ice level bin thermostat in the dispenser is closed and calling for ice, supplying contact closure to the control board. The LOW BIN LED will be on. The control board will now go through the start-up sequence.
Normal operation – Stage 2 When continuity is seen between B and C, the water valve de-energizes, the AUGER output (P4) comes on along with the MAKING ICE LED. The auger gearmotor’s start windings are energized through a current style start relay that is pulled in by the initial high current draw of the gearmotor. T.O.L. Fan 1 Start Relay Drain Valve 4 OR put Compressor Electrical Box WHITE Capacitor In se WHITE 5 PSC: Start winding energized through capacitor.
Normal operation – Stage 4 One second (1 s) after the fan comes on, the COMPRESSOR output comes on. The compressor circuit uses both run and start capacitors along with a potential start relay. The start capacitor in energized through the normally closed contacts of the start relay. T.O.L.
Normal operation – Stage 6 Once the bin thermostat control opens, the LOW BIN LED goes out. The compressor and gear motor outputs turn off, the MAKING ICE LED goes out and the TIME DELAY LED comes on. . T.O.L.
Normal operation – Stage 8 When the dwell time of 20 minutes has expired, the TIME DELAY LED goes off. If 5 seconds of ice has been dispensed and the SLEEP CYCLE LED (Symphony Plus only) is off, the ice machine will go through the normal start-up sequence when the bin level control signals the control board for ice. T.O.L.
Self-flushing (when enabled) At the completion of the 20 minute time delay, the machine checks for a cumulative one hour of ice making time since the last off-cycle flush. If the cumulative ice making time exceeds one hour, the machine will energize the drain valve P19 for 60 seconds to drain the evaporator. It will then refill with water, flush again, refill and begin making ice if the LOW BIN LED is on.
T.O.L.
High gearmotor amps – Stage 2 If the restart is successful the board will continue to monitor the current draw on P4 for 60 minutes looking for a second high amps (above 3A) occurrence. If the ice machine runs without problems for 60 minutes and no additional torque errors occur, the ice machine will continue normal operation. T.O.L.
Loss of water During operation, the water level cycles between the normal low (D) and normal high (C) water probes - the fill valve (P21) cycling on and off. If continuity is not detected between the common probe (B) and normal low (D) within 10 seconds, the LOW WATER and TIME DELAY LEDs will come on and the machine will shut down for the one hour time delay period. After the time delay, the fill valve will re-energize and wait for continuity between the common probe and normal high before restarting.
High refrigerant pressure Should the refrigeration pressure rise above 425 psi, the high pressure switch contacts will open. The board sees the open circuit and the HIGH PRESSURE and TIME DELAY LEDs will come on, the machine shuts down. After the one hour time delay, the machine will attempt to restart. If the pressure has fallen below the reset point of 295 psi and the board see the contacts closed, the machine will resume normal operation.
Refrigeration system (all models) All service on refrigeration systems must be performed in accordance with all federal, state and local laws. It is the responsibility of the technician to ensure that these requirements are met. Recharging ice machine to other than factory specifications will void the warranty.
R404A ice machine charge specifications Model Charge Refrigerant type MCD425A, MFD425A, R425A, P425A (air-cooled) 15 oz. (425 g) R404A MCD425W, MFD425W, R425W, P425W (water-cooled) 9 oz. (255 g) R404A Refrigerant replacement requirements 1. 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.
Evaporator disassembly Note: The upper bearing, lower bearing and auger assemblies must be replaced as assemblies. The bottom and top bearing assemblies cannot be field assembled to factory specifications. 1. 2. 3. 4. Press CLEAN switch. Wait for LOW WATER light to illuminate. Turn OFF power. Remove top bearing insulation and compression nozzle insulation. 5. Disconnect vent and drain tube from nozzle. 6. Disconnect compression nozzle from evaporator. 7. Disconnect evaporator water feed line. 8.
6. Lower bottom bearing assembly into evaporator mounting base. 7. While maintaining firm 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 to 70 in/lb. (Fig. 5). Note: Clamp must be oriented as shown in order for the insulation to be placed properly. 10. Place auger in center of evaporator and rotate to mate with drive pin. 11.
Replacement parts Air-cooled skins assembly (MCD425A_S, R425A) 8 7 6 2 9 3 1 4 5 10 11 Reference # Description Part # 1 Gasket, duct 502781 2 Duct (including gasket) 01068188 3 Front panel 01068204 4 Spacer, base 01068220 5 Panel, right side 01068238 6 Panel, left side and rear (1 piece) 01068246 7 Bushing 01026152 8 Panel, top 01068253 9 Tube, drain 01016948 10 Fitting, water 01065375 11 Fitting, drain 00109728 28 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Mach
Water-cooled skins assembly (MCD425W_S, R425W) 10 9 8 7 4 1 5 6 1 2 3 Reference # Description Part # 1 Fitting, condenser 00195966 2 Fitting, water 01065375 3 Fitting, drain 00109728 4 Panel, front 01068261 5 Spacer, base 01068220 6 Panel, right side 01068238 7 Tube, drain 01016948 8 Panel, left side and rear (1 piece) 01068246 9 Bushing 01026152 10 Panel, top 01068253 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines 29
Louvered docking station (MCD425A/W_T) 4 3 2 1 Reference # Description Part # 1 Louver, front 01006154 2 Cover, front 01068279 3 Tube, drain 01055185 4 Lovered docking station 01068287 30 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines
Electrical components 1 2 3 4 Reference # Description Part # 1 Capacitor, run 00997759 2 Relay start, compressor, 115 V, 60 Hz 00997726 3 Board, control circuit, 115 V, 60 Hz 01064708 4 Switch, clean 01229418 Not shown Bin thermostat (MCD425A/WBT, MCD425A/WHT, MFD425A/WBT and MFD425A/WHT only) 500514 Not shown Board, stand off control (8 required) 00903005 Not shown Relay, power to contact closure 01020734 Not shown Jumper, bin signal 01069095 Not shown Cord and plug, power
Evaporator 17 27 FOOD SERVICE 2 23 24 FLAKER COMPONENTS 1 25 3 3 4 4 30 17 HEALTHCARE 5 15 19 26 18 1 28 20 7 6 8 FLAKER 32 10 12 11 16 18 22 31 9 21 29 13 32 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines 13
Evaporator Reference # Description Part # 1 Coupling, vee band, includes nut 502735 2 Bearing assembly, top 502736 3 Loop, ice compression, beveled (see below for Flaker-specific components) 502110 4 Auger (see below for Flaker-specific components) 502737 5 Evaporator (includes insulation jacket, 502740) 01064658 6 O ring, bearing housing 500496 7 Bearing assembly, bottom (includes O rings and condensate shield) 502738 8 O ring, mounting base 501063 9 Shield, condensate 500744
Air-cooled ice machines 23 9 22 6 16 12 11 8 7 1 10 5 18 13 19 14 4 2 15 4 4 17 21 20 3 34 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines
Air-cooled ice machines Reference # Description Part # 1 Drier 502724 2 Condenser coil, A/C 01067461 3 Reservoir mounting bracket, a/c 01072909 4 Reservoir (includes lid, gasket, fasteners, clean and vent tubing, cleaning cup) 01230622 5 Bracket, electrical box 01068170 6 Evaporator (see page 32 and 33 for complete breakdown) — Not shown Tubing, polypropylene, reservoir supply (sold by foot) 502079 7 Valve, expansion, thermal 502726 8 Drain pan, evaporator 00181990 9 High pres
Water-cooled ice machines 23 15 7 16 22 1 16 11 13 12 21 14 6 5 9 8 10 18 17 19 4 3 3 20 2 36 3 MCD425A/W, R425A/W, MFD425A/W, P425A/W Ice Machines
Water-cooled ice machines Reference # Description Part # 1 Drier 502724 2 Valve, water regulating (includes Iso-washer) 500537 Not shown Iso-washer (for water regulating valve) 501810 3 Reservoir (includes lid, gasket, fasteners, clean and vent tubing, cleaning cup) 01230622 4 Reservoir mounting bracket 01068162 Not shown Tubing, polypropylene, reservoir supply (sold by foot) 502079 Not shown Fitting, reservoir, plastic 1/4" stem x 1/4" push-in 00121699 5 Evaporator (see page 32 and
Water treatment accessories for Symphony ice and water dispensers Reference # Description Part # Standard capacity filter system Not shown 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), one per ice machine 00130229 Not shown Follett FL4S primary replacement cartridge 00130245 Not shown Water filter cartridge – primary, carton of 6 00954297 Not shown Everpure
Dispenser models Replacement ice machine model Dispensers with top mounted ice machines 50CT425A & 50HT425A P425A 50HT425W & 50HT425W P425W 25CT 425A & 25HT425A P425A 25CT425W & 25HT425W P425W 110CT425A P425A 110CT425W P425W Dispensers with remote ice machines 25CR425A & 25HR425A R425A 25CR425W & 25HR425W R425W 50CR425A & 50HR425A R425A 50CR425W & 50HR425W R425W 110CR425A R425A 110CR425W R425W All U150/VU155 series with air-cooled ice machines MCD425AVS All U150/VU155 series with
Warranty Registration and Equipment Evaluation Thank you for purchasing Follett ® equipment. Our goal is to deliver high value products and services that earn your complete satisfaction by delivering high-value products and services backed by outstanding customer and technical support. Please review the installation instructions thoroughly. It is important that the installation be performed to factory specifications so your equipment operates at its maximum efficiency.
