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Hoshizaki F-800MAH, Service Manual

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Hoshizaki F-800MAH Service Manual Download Page 11

11

2. CONTROL BOX LAYOUT

  

F-800MAH/-C

Note: The above component names are identical with the Wiring Label, but not with

the Parts List.

PRESSURE
SWITCH

CONNECTOR

START
CAPACITOR

RUN
CAPACITOR

WATER CONTROL
                  RELAY

FLUSH
TIMER

TRANSFORMER

GEAR
MOTOR
RELAY

GEAR
MOTOR
CAP.

FLUSH

ICE

FAN
MOTOR
CAP

GEAR MOTOR
PROTECT RELAY

STARTER

CONTROL
TIMER

FUSE
(GEAR MOTOR)

FUSE

POWER
SWITCH

FLUSH
SWITCH

CIRCUIT PROTECT
RELAY

Summary of Contents for F-800MAH

Page 1: ...Hoshizaki A Superior Degree of Reliability www hoshizaki com Models F 800MAH C F 800MWH C Modular Flaker Hoshizaki America Inc Number 73173 Issued 9 2 2009 SERVICE MANUAL...

Page 2: ...planation of the problem IMPORTANT Only qualified service technicians should attempt to service or maintain this icemaker No service or maintenance should be undertaken until the technician has thorou...

Page 3: ...0MWH C 15 3 SEQUENCE OF ELECTRICAL CIRCUIT 16 4 TIMING CHART 26 5 PERFORMANCE DATA 29 F 800MAH 29 F 800MWH 30 F 800MAH C 31 F 800MWH C 32 IV ADJUSTMENT OF COMPONENTS 33 1 ADJUSTMENT OF WATER REGULATIN...

Page 4: ...ENT OF EXPANSION VALVE 43 6 REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE WATER COOLED MODEL ONLY 44 7 REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR C P R REMOTE AIR COOLED MODEL ONLY 4...

Page 5: ...ing 198 lbs 90 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 1 6 HP Gear Motor ICE MAK...

Page 6: ...manent Connection W ATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet 3 8 18 NPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 1 6 HP Gear Motor ICE MA...

Page 7: ...90 kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 1 6 HP Gear Motor ICE MAKING WATER C...

Page 8: ...Permanent Connection WATER SUPPLY Inlet 1 2 FPT Cond Inlet 1 2 FPT DRAIN Outlet 3 4 FPT Cond Outlet 3 8 18 NPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 1 6 HP Gear Motor ICE...

Page 9: ...FORMATION 1 CONSTRUCTION F 800MAH C Water Supply Inlet Junction Box Condenser Fan Motor Compressor Drier Control Water Valve Bin Control Ice Chute Evaporator Expansion Valve Flush Water Valve Control...

Page 10: ...10 F 800MWH C Water Supply Inlet Junction Box Water Regulator Compressor Drier Control Water Valve Bin Control Ice Chute Evaporator Expansion Valve Flush Water Valve Control Box Gear Motor...

Page 11: ...but not with the Parts List PRESSURE SWITCH CONNECTOR START CAPACITOR RUN CAPACITOR WATER CONTROL RELAY FLUSH TIMER TRANSFORMER GEAR MOTOR RELAY GEAR MOTOR CAP FLUSH ICE FAN MOTOR CAP GEAR MOTOR PROT...

Page 12: ...TOR START CAPACITOR RUN CAPACITOR WATER CONTROL RELAY TRANSFORMER GEAR MOTOR RELAY FLUSH ICE GEAR MOTOR PROTECT RELAY STARTER CONTROL TIMER FLUSH SWITCH POWER SWITCH FUSE FUSE GEAR MOTOR FLUSH TIMER C...

Page 13: ...13 III TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERATION CIRCUIT F 800MAH C...

Page 14: ...14 F 800MWH C...

Page 15: ...15 2 WIRING DIAGRAM F 800MAH C F 800MWH C...

Page 16: ...16 3 SEQUENCE OF ELECTRICAL CIRCUIT a When Power Switch is moved to ON position and Flush Switch to ICE position water starts to be supplied to Reservoir...

Page 17: ...17 b When Reservoir has been filled Gear Motor starts immediately...

Page 18: ...18 c Compressor starts about 60 sec after Gear Motor starts...

Page 19: ...19 d Bin Control operates and about 6 sec later Compressor and Gear Motor stop simultaneously...

Page 20: ...20 e Low Water Except Water cooled Model...

Page 21: ...21 f Low Water Water cooled Model or Dirty Air Filter Air cooled Model Pressure Switch to OPEN Compressor and Gear Motor operates intermittently...

Page 22: ...22 g When Flush Switch is moved to FLUSH position Flush Water Valve opens and flushes Reservoir and Evaporator...

Page 23: ...23 h When Flush Timer operates for 15 min every 12 hours...

Page 24: ...208 230V are supplied to Circuit Protect Relay it protects the circuit from miswiring If the power supply is properly connected the contact of Circuit Protect Relay does not move even when the coil is...

Page 25: ...25 j When input voltage is too low Less than 70 Gear Motor Fuse 1 5A is blown causing the Compressor and Gear Motor to turn off immediately...

Page 26: ...26 4 TIMING CHART...

Page 27: ...27...

Page 28: ...28...

Page 29: ...9 261 64 242 gal day l day 100 61 231 59 221 55 206 EVAPORATOR OUTLET TEMP 70 16 9 17 8 17 8 F C 80 18 8 18 8 19 7 90 21 6 19 7 21 6 100 22 5 23 5 23 5 HEAD PRESSURE 70 221 15 5 221 15 5 221 15 5 80 2...

Page 30: ...6 22 6 21 6 F C 80 22 6 22 6 22 6 90 21 6 22 6 22 6 100 23 5 23 5 22 5 HEAD PRESSURE 70 265 18 6 267 18 8 266 18 7 80 267 18 8 266 18 7 265 18 7 90 266 18 7 266 18 7 265 18 7 PSIG kg cm G 100 267 18...

Page 31: ...242 gal day l day 100 61 231 59 221 55 206 EVAPORATOR OUTLET TEMP 70 16 9 17 8 17 8 F C 80 18 8 18 8 19 7 90 21 6 19 7 21 6 100 22 5 23 5 23 5 HEAD PRESSURE 70 221 15 5 221 15 5 221 15 5 80 254 17 8...

Page 32: ...1 6 22 6 21 6 F C 80 22 6 22 6 22 6 90 21 6 23 5 22 6 100 23 5 23 5 23 5 HEAD PRESSURE 70 265 18 6 267 18 8 266 18 7 80 267 18 8 266 18 7 265 18 7 90 266 18 7 266 18 7 265 18 7 PSIG kg cm G 100 267 18...

Page 33: ...are a thermometer to check the condenser drain temperature 2 Rotate the Adjustment Screw by using a flat blade screwdriver so that the pressure gauge shows 260 PSIG R 404A models F type or the thermom...

Page 34: ...ng procedures 1 Remove the Bolt and the Cutter Head 2 The Cutter Head has two holes one for fine flake and the other for coarse flake size The unit is shipped from the factory in the fine flake positi...

Page 35: ...2 Wait till water is supplied j Plug and Receptacle Control Box 1 Disconnected 1 Connect 2 Terminal out of Plug or Receptacle 2 Insert Terminal back in position 2 Water flow does not stop and the icem...

Page 36: ...drier 8 Bad contacts 8 Check for continuity and replace 9 Loose connections 9 Tighten 6 Gear Motor starts but Compressor will not start or operates intermittently a X2 Relay on Control Timer 1 Bad co...

Page 37: ...ondenser water temperature too warm 2 Get cooler 3 Condenser water pressure too low or off Water cooled model only 3 Check and get recommended pressure 4 Fan rotating too slow 4 See 3 1 a Fan Motor 5...

Page 38: ...se SCALE AWAY or LIME A WAY solution to clean periodically If the water is found hard by testing install a softener 2 Overflow from Reservoir Water does not stop a Water Supply 1 Water pressure too hi...

Page 39: ...AND RECHARGE R 404A 1 Attach Charging Hoses a Service Manifold and a Vacuum Pump to the system Be sure to connect Charging Hoses to both High side and Low side Access Valves IMPORTANT The vacuum leve...

Page 40: ...ible leak 2 BRAZING DANGER 1 Refrigerant R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 2 Refrigerant R 404A itself is not explosive or poisonous However when expo...

Page 41: ...equipment WARNING When repairing a refrigerant system be careful not to let the burner flame contact any electrical wires or insulation 5 Remove the Bolts and Rubber Grommets 6 Slide and remove the C...

Page 42: ...all other repairs or replacement have been made 1 Turn off the power supply and remove the panels 2 Recover the refrigerant and store it in an approved container if required by an applicable law 3 Re...

Page 43: ...lve using brazing equipment 5 Braze the new Expansion Valve with nitrogen gas flowing at the pressure of 3 4 PSIG WARNING Always protect the valve body by using a damp cloth to prevent the valve from...

Page 44: ...be using brazing equipment 4 Disconnect the Flare connections of the valve 5 Remove the screws and the valve from the Bracket 6 Install the new valve and braze the Capillary Tube 7 Install the new Dri...

Page 45: ...nd store it in an approved container 4 Remove the C P R using brazing equipment 5 Braze the new C P R with nitrogen gas flowing at the pressure of 3 4 PSIG WARNING Always protect the C P R body by usi...

Page 46: ...the Cutter 9 Remove the Rubber O ring and the Nylon Ring at the top of the Evaporator EXTRUDING HEAD 10 Remove the four Socket Head Cap Screws and lift off the Extruding Head 11 Replace the Bearing i...

Page 47: ...Screws securing the Evaporator with the Bearing Lower 19 Lift off the Evaporator BEARING LOWER AND MECHANICAL SEAL 20 The Mechanical Seal consists of two parts One moves along with the Auger and the o...

Page 48: ...n replacing the Evaporator a Braze the new Evaporator with nitrogen gas flowing at the pressure of 3 4 PSIG b Replace the Drier c Check for leaks using nitrogen gas 140 PSIG and soap bubbles d Evacuat...

Page 49: ...echanical Seal O ring Bearing Lower Bolt Washer Coupling Spline Rubber O ring Nylon Ring Bolt Washer Cutter Extruding Head Washer Socket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier...

Page 50: ...Turn off the power supply remove the panels and close the Water Supply Line Shut off Valve 2 Disconnect the Terminals from the Control Water Valve 3 Loosen the Fitting Nut on the Control Water Valve I...

Page 51: ...t 5 Remove the Drain Pipe from the Flush Water Valve 6 Connect the Drain Pipe to the new Flush Water Valve and place the valve in position 7 Connect the Hose to the Flush Water Valve and secure it wit...

Page 52: ...n the icemaker with the Water Supply Line Shut off Valve closed 2 Open the Drain Valve and blow out the water inlet line by using air pressure 3 Turn off the power supply 4 Remove the Front Panel 5 Mo...

Page 53: ...Water Supply Line Shut off Valve 4 OpentheDrainValveandquicklyblowthewatersupplylinefromtheDrainValvetodrain water in the Condenser 5 Follow the above steps 3 through 11 in Air cooled and Remote Air...

Page 54: ...Hoshizaki Scale Away or LIME A WAY Economics Laboratory Inc with 0 8 gal of water This is a minimum amount Make more solution if necessary Sanitizing solution 2 5 fl oz of IMS II Sanitizer or a 5 25 s...

Page 55: ...for about 10 minutes before the operation Then turn on the power supply and make ice using the solution until the icemaker stops icemaking 15 Remove the Front Panel 16 Move the Flush Switch to the FLU...

Page 56: ...and supply water to the Reservoir 14 Turn off the power supply when the Gear Motor starts 15 Drain out all water from the water line See 4 through 7 in STEP 2 16 Move the Flush Switch to the ICE posit...

Page 57: ...left on these parts they will rust 12 Replace the removed parts and the panels 13 Turn on the power supply and run the icemaker 14 Turn off the power supply after 30 minutes 15 Pour warm water into th...

Page 58: ...intenancearerecommended Consult with your local distributor about inspection and maintenance service Toobtainthenameandphonenumberofyourlocaldistributor call Hoshizaki Technical Support at 1 800 233 1...

Page 59: ...gged the icemaker s performance will be reduced Check the filter at least twice a month When clogged use warm water and a neutral cleaner to wash the filter 4 Condenser Except water cooled model Check...

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