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Hoshizaki RELIABILITY IS A BEAUTIFUL THING DCM-270BAH-OS, Руководство по обслуживанию

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40

28) Assemble the removed parts in the reverse order of which they were removed

WARNING

Be careful not to scratch the surface of the O-ring, or it may cause water leaks.
Handle the mechanical seal with care not to scratch nor to contaminate its
contact surface.

29) Check for water leaks.

WARNING

After assembling the extruding head, be sure to check that the auger does not
come into contact with the inner surface of the evaporator and that there is not
any abnormal noise from the bearing.

30) Turn on the power supply.

31) Move the ice making switch to the “ON” position.

Содержание RELIABILITY IS A BEAUTIFUL THING DCM-270BAH-OS

Страница 1: ...Hoshizaki A Superior Degree of Reliability www hoshizaki com Models DCM 270BAH OS Cubelet Icemaker Dispenser Hoshizaki America Inc Number 73110 Issued 2 10 2004 Revised 5 26 2005 SERVICE MANUAL...

Страница 2: ...assistance HOSHIZAKI provides this manual primarily to assist qualified service technicians in the service and maintenance of the dispenser Should the reader have any questions or concerns which have...

Страница 3: ...ther 25 V Removal and Replacement of Components 26 1 Service for Refrigerant Lines 26 a Refrigerant Recovery 26 b Evacuation and Recharge R 404A 26 2 Brazing 27 3 Removal and Replacement of Compressor...

Страница 4: ...IGHT Net 152 lbs 69 kg Shipping 170 lbs 77kg CONNECTIONS ELECTRIC Cord Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT ICE MAKING SYSTEM Auger type HARVESTING SYSTEM Direct Driven Auger 80W...

Страница 5: ...oshizaki Cubelet Ice Dispenser model DCM 270BAH OS includes water supply freezer condensing storage dispensing and control assemblies Note Adjustable Legs Minimum height 4 Maximum height 5 3 Do not ad...

Страница 6: ...the rotating auger carries the ice upward to the end of the auger where excess water is pressed out of the ice as the ice is extruded and broken into cubelet ice compressed ice and then pushed out int...

Страница 7: ...7 III Technical Information 1 Water Circuit and Refrigerant Circuit...

Страница 8: ...270BAH OS air cooled Note Pressure data is recorded first 5 minutes in freezing cycle The data without marks should be used for reference We reserve the right to make changes in specifications and de...

Страница 9: ...9 3 Wiring Diagram...

Страница 10: ...10 4 Sequence of Electrical Circuit POWER ON WATER STARTS TO BE SUPPLIED TO RESERVOIR AGITATIONTIMERON 2SEC...

Страница 11: ...11 RESERVOIRFILLSUP GEARMOTORTURNSON...

Страница 12: ...12 COMPRESSORSTARTS 60 SEC AFTER GEAR MOTOR...

Страница 13: ...13 ICEMAKINGCONTINUES STARTCAPACITORTAKEN OUTOFCIRCUIT...

Страница 14: ...14 BINCONTROLTRIPS COMPRESSORSTOPS 90SECONDSLATER...

Страница 15: ...15 GEARMOTORSTOPS 60SECONDSAFTER COMPRESSOR...

Страница 16: ...16 DISPENSEICE BINCONTROLSTILLTRIPPED...

Страница 17: ...17 FLUSHSWITCHACTIVATED...

Страница 18: ...18 FLUSHTIMERACTIVATED...

Страница 19: ...19 AGITATIONTIMERACTIVATES GEARMOTOR...

Страница 20: ...en d Timer 1 Bad contacts 1 Check for continuity and replace 2 Coil winding opened 2 Replace 3 Loose connections 3 Tighten 4 Defective 4 Replace 3 a Compressor 1 Motor winding opened or grounded 1 Rep...

Страница 21: ...closed or restricted 2 Open b Water Valve 1 Clogged filter 1 Clean 2 Coil winding opened 2 Replace c Float Switch 1 Contacts fused 1 Replace 2 Clogged 2 Clean d Water Control Relay 1 Bad contacts term...

Страница 22: ...tor stops compressor intermittently 1 Check condenser and fan motor e Inside Wall of Evaporator 1 Scale on inside wall of freezing cylinder 1 Remove auger use Hoshizaki Scale Away or LIME A WAY soluti...

Страница 23: ...ver may cause the sensors to malfunction The sensors will work with most shades colors of cups with a sensing distance of 45 to 65 mm In certain water conditions the lenses of the sensor may become sc...

Страница 24: ...sor to K5 PIN 6 W BR or BK on sensor 5 VDC 5 VDC Lead 1 Lead 2 Dispense Non Dispense K2 PIN 8 DBU to K4 PIN 2 LBU 24 VAC 0 VAC K5 PIN 7 RED to K5 PIN 9 BK 5 VDC 5 VDC K5 PIN 7 RED to K5 PIN 8 WH 5 VDC...

Страница 25: ...se a Fan Motor 1 Bearings worn out 1 Replace 2 Fan blade deformed 2 Replace fan blade 3 Fan blade caught on foreign object 3 Remove the object b Compressor 1 Bearings worn out or cylinder valve broken...

Страница 26: ...rant access valves one on the low side and one on the high side line Using proper refrigerant practices recover the refrigerant from these two access valves and store it in an approved container Do no...

Страница 27: ...frigerant access valves and disconnect the hoses and service manifold 10 Cap the access valves to prevent a possible leak 2 Brazing DANGER 1 Refrigerant R 404A itself is not flammable at atmospheric p...

Страница 28: ...they use the same lubricant 1 Turn off the power supply and unplug the dispenser 2 Remove the panels 3 Remove the terminal cover on the compressor and disconnect the compressor wiring 4 Recover the r...

Страница 29: ...ier IMPORTANT Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made 1 Turn off the power su...

Страница 30: ...onnect the expansion valve using brazing equipment 6 Braze the new expansion valve with nitrogen gas flowing at a pressure of 3 4 PSIG WARNING 1 Do not heat the wall Place a steel barrier for protecti...

Страница 31: ...nels 3 Recover the refrigerant and store it in an approved container 4 Remove the control box cover and disconnect the terminals 5 Remove the pressure switch using brazing equipment 6 Braze the new pr...

Страница 32: ...e control water valve inlets and remove the control water valve Do not lose the packings inside the fitting nut 6 Remove the water supply hose from the control water valve 7 Install the new control wa...

Страница 33: ...lush water valve 7 Remove the flush water valve from the frame or bracket 8 Connect the new flush water valve back onto the frame or bracket 9 Connect the tube from the plastic tee to the new flush wa...

Страница 34: ...ly 2 Close the water supply line shut off valve 3 Remove the panels 4 Flush water out of the system 5 Cut the float switch leads at the wire connectors 6 Turn and unfasten the flanged top and remove t...

Страница 35: ...the top panel 3 Remove the bin control switch from the storage bin cover Twist then pull up 4 Cut the wire leads and remove switch 5 Assemble the replacement switch reversing the procedure used to re...

Страница 36: ...panels 5 Remove the storage bin cover 6 Remove the agitator drip ring drip plate and shutter assembly 7 Remove the three socket head cap screws and lift off the storage bin assembly 8 Install the new...

Страница 37: ...nd unplug the dispenser 4 Remove the top panel 5 Remove the storage bin cover 6 Rotate the agitator counterclockwise and lift off 7 Rotate the drip ring about 30 degrees clockwise and lift off 8 Insta...

Страница 38: ...te Replacing the bearing requires a fitting tool If one is not available replace the whole extruding head Auger 9 Lift up and turn the auger until it comes off If the area in contact with the bearings...

Страница 39: ...Remove the four hexagon bolts securing the housing to the gear motor 22 Remove the mechanical seal fixed on the housing Note The mechanical seal consists of two parts One moves along with the auger an...

Страница 40: ...chanical seal with care not to scratch nor to contaminate its contact surface 29 Check for water leaks WARNING After assembling the extruding head be sure to check that the auger does not come into co...

Страница 41: ...ing air or carbon dioxide Shut off the ice dispenser until the proper ambient temperature is resumed 1 Close the water supply line shut off valve 2 Move the ice making switch located on the control bo...

Страница 42: ...ce making switch located on the control box to the FLUSH position 4 Press the ICE push button and remove all ice from the storage bin 5 After water has drained out through the drain pan move the power...

Страница 43: ...43 Fig 5 Fig 4...

Страница 44: ...clean warm water carefully onto the bin liner agitator drip ring and into the reservoir through the opening in the center of the storage bin to melt the ice and rinse out the cleaning solution 16 Move...

Страница 45: ...e bin to melt the ice and rinse out the sanitizing solution Be careful not to wet the bin control switch on the storage bin cover 7 Remove the bin control switch from the storage bin cover and immerse...

Страница 46: ...off oil or dirt build up 2 Air Filter See Fig 6 A plastic mesh air filter removes dirt or dust from the air and keeps the condenser from getting clogged As the filter gets clogged the ice dispenser s...

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