Service Manual for Cube Ice Machine with storage - Ice-O
Contents
1. Follow All Local Codes This Unit Must Be Grounded Do not use extension cords and do not disable or by pass ground prong on electrical plug Plug the power cord into the proper power supply Installation check list e Has the machine been installed indoors in an environment suitable for it Have all of the shipping items and packaging been removed e Has the plastic covering the exterior panels been removed s the ice chute in the correct position s the clear plastic curtain hanging down and free to move e Has the water supply been connected and confirmed to not leak e Has a properly sized and sloped drain tube been attached Has the correct voltage power supply been connected Front view of freezing compartment right arrow points to Spray Platform under the Cube Deflector Push curtain back and check that it is in this position Left arrow points to Cube Deflector it must be positioned as shown it snaps onto front edge of reservoir Remove any packing materials Curtain Front view of freezing compartment arrow points to clear plastic curtain After checking spray platform pull curtain down to hang freely This is its normal position August 2014 Page 8 Service Manual for Models HISUOBO HISUO70 and HISU090 Control Panel and Adjustments Ice Bridge Thickness Adjustment Area ON OFF WASH MARCHE ARR T LAVAGE ENCENDIDO APAGADO LAVADO ON OFF LAVAGGIO EIN2. August 2014 Page 18 Service Manual for Models HISUOBO HISUO70 and HISU090 Anti Slush Slush in the reservoir restricts pump flow causes TEE EE excessively long freeze cycles and is something this a zs D 9 machine is designed to prevent aM It does that by shutting off the water spray to the evaporator at a critical time 4 RIS Kal CR SECH 1 a E Sh The critical time is when the water temperature is near fee E Sma the freezing point The controller measures the water mn H S a S P a be d temperature using a thermistor probe in the pump dnd discharge hose At the correct temperature it cuts sf AU a R power to the water pump for 30 seconds This allows E voc the water left on the evaporator surface to securely freeze to the evaporator surface When the pump restarts the freeze cycle will continue until harvest 011 012 O14 INSP 976 Di5 5 11 0699 01 GND The indication that the unit is in a anti slush mode is a light on the back of the controller Anti Slush Pump Light August 2014 Page 19 Service Manual for Models HISUOBO HISUO70 and HISUOSO Controller Self Test Control Board Self Test Routine Begin with unit unplugged and no ice touching the bin control 1 Remove top and back panels to access thermistor on suction line above accumulator 2 Remove the thermistor probe from the suction line 3 Shut water supply off 4 Remove front pane
3. Cubed ice machines of this type make ice that is more pure than the water supplied to it Since the ice has fewer impurities the water that remains in the reservoir has more The water system dilutes that concentration but eventually it does build up and need to be removed Over the years it has been determined that the typical scale removal frequency is about 2 times per year To remove scale from the water system Materials needed Food grade nickel safe scale remover for ice machines also known as ice machine cleaner e Sanitizer e Hand tools Clean bucket Clean cloths Rubber or plastic gloves 1 Remove front panel 2 Move master switch to Off wait a minute and then move it to On 3 When the freeze cycle begins blue light on switch the machine to Off 4 Remove and discard the Ice 5 Drain reservoir by pulling drain plug and return drain plug to its original position 2 Ice machine scale remover contains acids Acids can cause burns 3 If concentrated cleaner comes in contact with skin flush with water If swallowed do NOT 4 induce vomiting Give large amounts of water or milk Call Physician immediately Keep out of the reach of children 6 August 2014 6 10 11 12 13 14 15 Pre mix nickel safe ice machine cleaner with warm water according to label instructions on container Pour the solution into the reservoir by carefully adding it at the reservoir s
4. OFF WASH e R glage de l paisseur du pont de glace MARCHE ARRET LAVAGE Adjust by pushing the sign or sign on the ice bridge Ajuste del espesor del puente de hielo ENCENDIDO APAGADO LAVADO di i Regolazione spessore ponte di ghiaccio adjustment section of the control panel until the correct 52222 2 EIN AUS WASCHEN number of lights are on steady or blinking That is the factory setting The ice bridge may be adjusted further if needed but do NOT adjust too thin Ice must release as a unit O OOOO Harvest Cycle Time Adjustment Harvest Time Adjustment Adjust by pushing the or sign on the harvest time R glage du temps de r colte P Ajuste del tiempo de cosecha adjustment section of the control panel until the correct npassung aer Erntezel number of lights are on steady or blinking That is the factory i F Mod setting 2 lt 22 Modo de congelamiento Modalit congelamento Proper harvest time is when the ice falls into the bin and there Gefriermodus Timer On is about 10 seconds extra harvest time pump and fan are off Minuterie allum e C C Cron metro encendido before the freeze cycle restarts Timer attivato 17 3386 01 Timer eingeschaltet If the harvest time is too short to release the ice or if more water must be purged in high ambient conditions increase the time by pushing the sign on the harvest time adjustment
5. Press and hold lower left button and it will turn on each of the green LEDs one at a time Hold lower left button in until all of the green LEDs are tested 13 Press lower right button to test the EEPROM read and write The yellow Timer LED will turn on for 2 seconds if the EEPROM read and write operations were successful Power down the board to exit the test mode Test Results i ee mme switches ON light thermistor set WEE switches ON light thermistor set 10 Compressor fan motor and pump start Either compressor or pump do not start Check voltage to compressor or pump If no voltage to one or both replace controller 11 Water pump Pump does Replace stops not stop controller 12 All green LEDs Some do not Replace light up illuminate controller 13 Yellow Timer LED No timer Replace switches ON light controller If the controller passes all tests there is nothing wrong with it and the issue is in something else 1 Reattach evaporator thermistor to the suction line at the same place it was mounted and re insulate it 2 Reconnect water supply restart unit and return all panels to their original positions August 2014 Page 20 Service Manual for Models HISUOBO HISUO70 HISUOSO Service Diagnosis Possible Cause Probable Correction No ice No water to ice machine Check water filters check water pressure Pressure lower than 10 psi flowing may not fill reservoir enough No i
6. When blue freeze mode light is on suction line should begin to get cold If not confirm compressor is operating No ice in bin evaporator mold forms No heat for harvest ice does not Hot gas valve does not open Check water ice properly release valve if it adds water during harvest and the hot gas valve does not open replace the hot gas valve If both are not opening replace the controller Very cold water supply Increase harvest time Damaged evaporator Check plating and replace if needed No ice compressor is off Compressor relay not working Check current relay for proper operation replace if not working Compressor overload open will Check replace overload not reset Compressor windings open Check compressor windings replace compressor if motor is open Compressor overheated Check refrigeration system for proper charge Makes ice but ice is cloudy or not opray jets restricted by mineral Clean ice machine water system completely formed scale Lack of rinse water due to hot Harvest time affects how much water is room temperature used to rinse the reservoir if harvest time is short and mineral scale builds up fast adjust controller for more harvest time to add more rinse water August 2014 Page 22 Service Manual for Models HISUOBO HISUO70 HISU090 Service Diagnosis Possible Cause Probable Correction Makes ice but makes blocks or shells Ice bridge wrong size Adjust to proper size Evaporator thermist
7. 28 Electrical Sequence 14 115 60 1 Wiring Diagram 29 Components 15 Observe the Caution and Warning notices They are indicators of important safety information Keep this manual for future reference August 2014 Page 1 Service Manual for Models 50050 HISUO70 and HISUOSO Important Details The machine is designed for use indoors in a controlled environment It must be kept dry not overheated or subjected to excessive cold The water and power supply must be maintained or the machine will stop making ice There are limits to how hot or cold the room it s in can be e Minimum air temperature 50 F or 10 C e Maximum air temperature 100 F or 38 C There are also limits to how hot or cold the water supply can be Minimum water temperature 40 F or 4 5 C e Maximum water temperature 100 F or 38 C There are limits to the voltage supply to the unit voltages vary by model Voltage 0560 Water supply must be potable by the localities definition There are limits to the water pressure supplied to the unit e Maximum pressure static 80 psi or 5 5 bar Minimum pressure dynamic 15 psi or 1 bar A drain will be needed for melted ice and rinse water Warranty The warranty statement for this product is provided separately from this manual Refer to it for applicable coverage In general warranty covers defects in material or workma
8. 606 12 29752 64 13823 116 4093 168 1453 220 597 19 56995 65 13476 117 4006 169 1427 221 587 14 55296 66 13139 118 3921 170 1401 222 578 15 53653 67 12812 119 3838 171 1375 223 569 16 52065 68 12494 120 3757 172 1350 224 560 17 50529 69 12185 121 3678 173 1326 225 551 18 49043 70 11884 122 3601 174 1302 226 543 19 47607 71 11592 123 3526 175 1279 227 534 20 46217 72 11308 124 3452 176 1256 228 526 21 44872 73 11031 125 3381 177 1234 229 518 22 43571 74 10763 126 3311 178 1212 230 510 23 42313 75 10502 127 3243 179 1190 231 502 24 41094 76 10247 128 3176 180 1169 292 495 29 39915 77 10000 129 3111 181 1149 299 487 26 38774 78 9760 130 3047 182 1129 234 480 2f 3 669 79 9526 131 2985 183 1109 235 472 28 36600 80 9299 132 2924 184 1090 236 465 29 35564 81 9077 133 2865 185 1071 237 458 30 34561 82 8862 134 2807 186 1052 238 451 21 33590 83 8652 135 2751 187 1034 239 444 32 32649 84 8448 136 2696 188 1016 240 438 33 31738 85 8250 137 2642 189 998 241 431 34 30855 86 8056 138 2589 190 981 242 425 35 30000 87 7868 139 2537 191 965 243 419 36 29171 88 7685 140 2487 192 948 244 412 37 28368 89 7507 141 2438 193 932 245 406 38 27589 90 7333 142 2390 194 916 246 400 39 26835 91 7164 143 2343 195 901 247 394 40 26104 92 6999 144 2297 196 885 246 389 41 25395 93 6839 145 2252 197 871 249 383 42 24707 94 6683 146 2208 198 856 250 377 43 24041 95 6530 147 2165 199 842 44 23394 96 6382 148 2123 200 828 45 22767 97 6238 149 2082 201 814 46 22159 98 6097 1
9. Disconnect electrical power AWARNING Electrical Shock Hazard Disconnect electrical power before beginning Remove front panel Remove top panel Remove left side panel DI N Remove tape covering cap tube and pull cap tube out of the sensing tube Remove back cover of control box 7 Remove bin thermostat from control box and disconnect wires from it 8 Remove sheet metal air baffle from in front of compressor 9 Pull cap tube and bin thermostat from unit 10 Route new bin thermostat s cap tube thru notch in left side of unit and up to the hole in the left side of the bin 4 5 6 7 8 10 Remove front panel Remove top panel Remove right side panel Remove back panel Shut water off to unit Remove utility panel lower left corner viewed from the back Valve bracket is attached to panel Locate inlet water solenoid valve SA Invensys Push in collets to release inlet and outlet tubing connections 11 Insert cap tube into sensing tube 11 Disconnect electrical wires from valve 12 Connect wires to bin thermostat 12 Remove two screws holding valve to bracket and 13 Mount bin thermostat to control box pue OP ERR 14 Reinstall air baffle and control box back 10 ee EE ER py pening el into the replacement valve until they bottom out 15 Reinstall left side panel Be sure master switch is in the ON position 16 Reinstall
10. all panels 15 Re attach valve to bracket 16 Switch water on and check for leaks Correct as 17 Reconnect electrical power needed 17 Reconnect electrical power and confirm no leak 1 Disconnect Electrical Power while water valve is on 2 Pull unit out to get back access 18 Return all parts to their original positions August 2014 Page 26 Service Manual for Models HISUOBO HISUO70 HISU090 Controller The controller ships set for HISUO 70 and must be adjusted for other models Please review these instructions prior to installation 1 Disconnect electrical power 2 Remove front panel 3 Remove control box back cover 4 Disconnect all wires from controller squeeze standoffs together to release from bracket and remove controller from the ice machine Touch the metal base of the ice machine before touching the new controller to discharge static electricity Mount the new controller onto the sheet metal bracket of the control box Connect all wires per the wiring diagram y electrical power and adjust the controller per this table bin thermostat must be warm Model Ice Bridge Lights Ice Bridge Lights Harvest Lights Harvest Lights On Steady a On DL P HISUO5O o 0 o o of E HISUOTO HISUO90 2 1 j 83 0 9 Return control box back and front panel to their normal positions Ice Bridge Thickness Adjustment Ice Bridge Thickness Adjustment ON
11. front lip Move the master switch to the Wash position Wait 10 minutes Move the master switch to the Off position Drain the reservoir by removing drain plug and draining the solution into the bin Return the drain plug to its normal position Remove spray platform by removing cube chute and lifting spray platform up and off its connection If needed open platform and confirm all jets are open Rinse out any debris reclose and return it and the cube chute to the unit Be sure gasket is positioned correctly narrow side faces up toward jets Pour 2 5 quarts or 2 4 liters of warm 95 F 35 C to 115 F 46 C water into the reservoir by adding it at the reservoirs front lip Switch the master switch to Wash for 1 minute then switch it to Off Repeat step 11 Go to the next process to sanitize the machine Sanitize Water System after completing prior scale removal and stopping at the end of its steps 1 Page 12 Mix a 1 gallon or 4 liter solution of locally approved sanitizer and clean warm 95 F 35 C to 115 F 46 C water Use an EPA approved food equipment sanitizer at the solution mix recommended by the sanitizer manufacturer Pour about half of the sanitizer mix into the reservoir Remove the cube chute and spray platforms and wash them with the sanitizer then return them to the ice machine Move the master switch to the Wash position Circulate the sanitizer for 2 minutes Move the mast
12. pump spraying fan motor Master switch in Wash position Move switch to ON position and compressor off No ice pump spraying compressor Fan motor open no power or stuck Check blade for free rotation correct by on fan motor not turning clearing debris jamming blade or replace motor if blade is not jammed August 2014 Page 21 Service Manual for Models HISUOBO HISUO70 HISU090 Service Diagnosis Possible Cause Probable Correction No ice fan motor not turning No power to it Check controller Freeze NO terminal to COM for proper voltage If blue freeze light is on and no voltage replace controller Check fan pressure control if air temperature is over 70 degrees F the pressure control should be closed when in freeze mode Open windings Check motor for continuity replace if open Inlet water valve on all the time Low voltage to machine do not operate with wrong voltage No ice everything operating poor Spray platform leaking Check seams of spray platform be sure it is spray to evaporator sealed together No ice everything operating good Too much water Check inlet water valve for leaking thru and spray to evaporator overfilling reservoir replace valve if leaking No ice everything operating water in Hot gas valve not shutting off Check body of hot gas valve if hot replace reservoir is hotter than supply water valve No ice everything operating Not enough refrigeration Check suction line temperature
13. 2014 Page 4 Service Manual for Models HISUOBO HISUO70 and HISUOSO Cabinet Layout L 4 e 6000 06000 POWER CORD POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft DRAIN 3 4 OO 060 0600 e ee e oo e oe e eoooeoooeesee 0 0 4 020605 2 ouem con 7cm 2 75in 5 1cm 2 00in 8 2cm 3 23in 2 32cm 12 60in POWERCORD 60 1cm 23 67in POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft 50 8cm 20 00in 7 81 1cm 31 94in 95 4cm 37 56in LA E 68 9cm g p 27 13in E 1 2 E J 2 E T z E d T9 E SS T 4 15 2 AIR AIR 6 00in OUTLET INLET 42 5cm 48 3 16 75in 19 00in August 2014 Page 5 10 2cm 4 00in MINIMUM U
14. 50 2042 202 800 47 21569 99 5960 151 2003 203 787 48 20997 100 5826 152 1965 204 774 49 20442 101 5696 153 1927 205 761 50 19903 102 5569 154 1890 206 749 51 19381 103 5446 155 1855 207 737 August 2014 Page 17 Service Manual for Models HISUOBO HISUO70 HISU090 Controller Use When in a Freeze cycle or mode a blue light will glow The upper line of LED lights are indictions of the adjustment for Bridge Ele azar Shoe wm Thickness More lights more freeze M Im WA time and a bigger bridge The lower level line of LED lights are indicators of the adjustment for Harvest Time More lights more harvest time and more water rinse atment ickness CET ae DU Ge a da ponte 91920 ul Ajuste da esP WII 4 dl Risque Electrique Choc Couper toute Connexiong S les D A Le 11 imentat D pannag 1 AL MY 4 N WIPE dad aad Adis tay d a e 257 aura ES Unit in ice making mode freeze mode indicator light is on At the end of the freeze cycle a yellow Timer light will switch on indicating that there are 7 minutes left until Harvest p a d During the end of Harvest the Timer light may also switch on T Befor I Y ervicing umm V arr me Unit in ice making mode timer indicator light is on
15. AUS WASCHEN Ice Bridge Thickness Adjustment R glage de l paisseur du pont de glace Ajuste del espesor del puente de hielo Regolazione spessore ponte di ghiaccio Anpassung der Eisbr ckendicke 2 cleaning Harvest Time Adjustment R glage du temps de r colte Ajuste del tiempo de cosecha Regolazione orario di raccolta Anpassung der Erntezeit Freeze Mode 2 lt Mode de cong lation Modo de congelamiento Modalit congelamento Gefriermodus Timer On Minuterie allum e C Cron metro encendido Timer attivato Timer eingeschaltet 17 3386 01 Ice Thickness Diagram Ice Too Thin Ice Just Right Bridge Thickness Ice Too Thick Adjustment Indicator Lights Each push and release of the or button will change the lights that glow or blink indicating a change in ice size or harvest time Example pushing one time changes a blinking light to steady on type If the lights are on steady a single push of will add one more light to the right and it will blink There are 10 settings All 5 lights on steady is the maximum setting and one blinking light is the minimum Master Switch Move to ON left side depressed to make ice OFF centered to shut off and WASH right side depressed for use in Harvest Time Adjustment Area Indicator Light Area Freeze Mode light is ON when unit is in a Freeze cycle Timer On light is ON when trigger point temperature is reached in Freeze or Harve
16. Compressor dome is normally warm Drain water per cycle at standard harvest setting about 1 4 quarts at shorter setting drain water reduced to 1 quart Compressor amp draw 115 volt Freeze 5 minutes in 2 6 Overall Freeze cycle amps begin at 2 7 decline to 2 5 e Harvest 2 9 3 2 Drain water per cycle at standard harvest setting about 1 quart at shorter setting drain water reduced slightly Compressor amp draw 115 volt Freeze 5 minutes in 3 1 Overall Freeze cycle amps begin at 3 5 decline to 2 9 e Harvest 3 3 3 7 Drain water per cycle at standard harvest setting about 2 quarts at shorter setting drain water reduced to 1 7 quarts Drain water is directly affected by harvest time these numbers will vary with air and water temperature changes August 2014 Page 16 Service Manual for Models HISUOBO HISUO70 and HISU090 Thermistor Values Deg F Ohms Deg F Ohms Deg F Ohms Deg F Ohms Deg F Ohms 0 85325 52 18873 104 5325 156 1819 208 724 1 82661 53 18381 105 5208 157 1785 209 713 2 80090 54 17903 106 5093 158 1752 210 701 3 77607 99 17439 107 4981 159 1719 211 690 4 75210 56 16988 108 4872 160 1687 212 679 5 72896 57 16551 109 4766 161 1655 213 668 6 70660 58 16126 110 4663 162 1624 214 657 7 68501 59 15714 111 4562 163 1594 215 646 8 66415 60 15313 112 4463 164 1565 216 636 9 64400 61 14924 113 4367 165 1536 217 626 10 62453 62 14546 114 4273 166 1508 218 616 11 60571 63 14179 115 4182 167 1480 219
17. Ice O Matic Service Manual for Cube Ice Machine with storage models HISU050 50070 and HISUO90 Service Manual for Models HISUOBO HISUO70 and HISUOSO Introduction The design of this product is the result of years of experience in developing commercial ice cube machines It has been designed for simple operation in a wide range of locations Please follow the instructions for installation and maintenance to get the most use from this ice machine Table of Contents Performance 16 Important lt 2 Thermistor 17 lt 9 Controller Uee nananana nanana 18 Cabinet Layout 50050 and HISUO O A Anti Slush 19 Cabinet Layout HISUO90 5 Service Diagnosis 21 Component Location 6 Service Diagnosis 22 Connect the water supply Service Diagnosis 23 Connect the power 8 Removal and Replacement 24 Control Panel and Adjustments 9 Removal and Replacement 25 Initial Start 10 Removal and Replacement 26 Use and Operational Notes 11 27 Maintenance 12 Cabinet Removal for Service
18. O3SNVd L 8055384 gt 1315 TION LINN OLYIMOd TIY LOANNODSIC OL G3YINOIY C4CNNOYD 38 39 AVW SNV3IN TONN GO JNO NVHLIYOW ISAW LINN SIHL NOUT AND 35N4 WKY ONY NEIEN ET NI d3MOd AND Ch ES August 2014 Page 29 TOULNOD NOUT OD 1N38800 Am 83 035 1 Ajuo 2905 We SSNS V 10 6601 ICE O MATIC 11100 East 45th Ave Denver CO 80239 USA 303 371 3737 800 423 336 www iceomatic com
19. TILITY CLEARENCE Service Manual for Models HISUOBO HISUO70 HISU090 Component Location La O ucl C Q gt O Curtain Bin Thermostat DO 4 GA Condenser Fins Drain Plug 2 Bin Thermostat Adjustment Controller Control Area Condenser Fan August 2014 Page 6 Service Manual for Models HISUOBO HISUO70 HISUOSO Connect the water supply Plumbing information he water supply connection is at the back panel It is a 5 1 5 meter 1 4 inch 6 35 mm OD plastic tube e A hand actuated valve within site of the machine is required to isolate the unit when it s being serviced e The machine has a built in back flow preventer an air gap between the end of the water inlet hose and the top of the reservoir water no additional back flow preventer is needed e Water flow rate into machine is 25 94 LPM Units that are built into a cabinet Include a loop or coil of tubing between the water supply and the connection on the ice machine When the machine is pushed back into the cabinet the tubing will coil and not kink Potable Water Inlet Tube Drain Fitting 3 4 FPT Connection Information WARNING connect to potable water supply only Important Open the hand water valve to flush water through the connection point before connecting to the ice machine 1 Cut cable ties securing hose and power co
20. bin will restart the ice making process 13 Check for and correct any water leaks from the unit or drain system 14 Return the front panel to its normal position and secure it to the cabinet with the original screws Typical Cycle Times minutes Note First cycle after any restart will be longer than listed here 70 50 21 10 90 70 32 21 HISUO5O 28 30 34 37 HISUO 7O 16 18 23 26 50090 14 16 17 19 The time to fill warm storage bin from empty varies by cabinet temperature and cycle time but will take about 10 12 hours August 2014 Page 10 Service Manual for Models HISUOBO HISUO70 and HISUOSO Use and Operational Notes To use simply lift the door by its bottom edge and slide it up and into the top of the machine Use the scoop to remove ice and close the door No Step Do not stand on the machine Severe damage can occur The machine will make the most ice if it has plenty of room to breathe This is an air cooled product and This appliance is not intended for use by persons it must be able to take in room air and discharge including children with reduced physical sensory air heated by the ice making process Blockage of or mental capabilities or lack of experience and vents or exposure to excessive heat will reduce the knowledge unless they have been given supervision ice making and storage capacity The storage bin is or instruction concerning use of the app
21. ce nothing operating No power to ice machine Check power restore if needed Open contacts in bin thermostat Check cabinet temperature thermostat will be open if cabinet is too cold Advise user to operate unit in proper conditions Check bin thermostat contacts if open at bin temperature above 45 degrees F replace thermostat Master switch in OFF position Move switch to ON Transformer failure Check transformer output voltage must be 12 volts at J1 J2 of controller If correct line voltage is supplied but output is too low replace transformer Controller failure some lights Check controller use self test on prior visible page Controller failure 12 volts to it no Replace controller lights visible No ice compressor and fan on No or low water in reservoir Check water filters check water pressure pump not spraying water Pressure lower than 10 psi flowing may not fill reservoir enough Check inlet water solenoid valve for proper operation Check drain plug for leaks correct as needed Pump hose disconnected Check hose at spray platform and pump Pump motor not working Check voltage to pump If none and blue freeze mode light is ON wait 30 seconds If still none replace controller Pump motor overheated Check cabinet temperature if too hot relocate unit If not replace pump Voltage too high Pump jammed check inlet for debris remove and retry Pump failed replace pump No ice
22. ches on the freeze cycle continues for seven more minutes At that time the unit changes to the ice release or harvest cycle During the ice harvest the hot gas valve and inlet water valve are open while the pump and fan motors will stop The blue and yellow lights will go out Water will refill the reservoir 9 Within a minute or so the ice formed in the mold will fall down and slide into the ice storage bin The ice will release as a group so all of the ice formed will fall at once and the next freeze cycle will begin in a few seconds The timer light may switch on at the end of the harvest cycle 10 Check the thickness of the ice connecting the cubes to each other that connection is known as a bridge and it should be about 1 8 inch or 3 to 4 mm thick It is preset from the factory and should be satisfactory Adjustments If the ice bridge is too big or too small the thickness may be adjusted Note The bridge thickness adjustment is used to obtain the CORRECT size not to adjust to individual preferences Do NOT make the ice bridge too thick or too thin as either will reduce ice making capacity Do NOT attempt to adjust the machine to release individual cubes There is only ONE correct size 11 Ice making will continue until the ice level reaches the metal tube in the storage bin when ice contacts that tube the machine will stop making ice This can occur in any part of any cycle 12 Removing ice from the ice storage
23. er switch to Off Service Manual for Models HISUOBO HISUO70 and HISUOSO f 10 11 12 19 14 Drain the reservoir into the storage bin by removing the drain plug Return the drain plug to its normal position Wash all interior surfaces of the ice machine storage bin reservoir surface and inside of the door with the remaining sanitizer solution Pour any excess sanitizer down the ice machine bin drain Pour 2 5 quarts or 2 4 liters of warm 95 F 35 C to 115 F 46 C water into the reservoir by adding it at the reservoirs front lip Move the master switch to the Wash position for 1 minute then switch it to Off Drain the reservoir by removing the drain plug and draining the solution into the bin Return the drain plug to its normal position Move switch to the On position The machine will resume normal ice making Return the front panel to its original position and secure it with the original screws Cleaning the Condenser 1 2 3 Remove the front panel Switch the machine to OFF Vacuum the surface of the condenser fins carefully brush off any loose dirt If grease is imbedded use coil cleaner to wash it out Switch the machine to ICE Return the front panel to its original position August 2014 Page 13 Service Manual for Models HISUOBO HISUO70 HISUOSO Electrical Sequence Proper voltage must be supplied and the bin thermostat closed and calling for ice or the contro
24. kes ice but is loud Some noise is normal the fan Check for fan blade touching debris or pump and compressor all produce shroud sound Drain slots plugged clean water system Check that all panel fasteners are on tight Identify loud part and replace it Door binds opening or closing Roller or pin is broken Check replace door roller Bin overfills Bin thermostat does not open Replace thermostat August 2014 Page 23 Service Manual for Models HISUOBO HISUO70 HISU090 Removal and Replacement Curtain Curtain Top Edge 1 Remove front panel and switch unit Off Remove top panel e Cf 2 3 Remove evaporator cover wer Wane FT 4 Locate white curtain top at front of evaporator pull Y up on it and remove from the unit 5 Slide new curtain down in same place as original into the slot between the plastic evaporator frame and the front of the reservoir Push curtain down into the slot as far as it will go 6 Check that curtain hangs freely and reassemble the parts removed Curtain Top Edge Cube Deflector 1 Remove front panel 2 Shut unit off 3 Open door lift original cube deflector up twist slightly and pull forward out of the reservoir 4 Install new deflector in reservoir be sure deflector is snapped down at the front it fits tightly on the reservoir edge 5 Switch unit on and observe spray pattern be sure deflector is not interfering with water
25. l provide the means for containment There are no means for attachment to the cabinet Be sure to remove the plastic covering the exterior panels Qe if left on it will be much harder to remove later Air OUT August 2014 Page 3 Service Manual for Models HISUOBO HISUO70 and HISU090 Cabinet Layout POWER CORD POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft od OG GO OD OO 8 0 0 0 0 9 OO DO 8 e o DRAIN 0292020030020 3 4 14 6cm 6 9 0 0 0 0 6 4 5 8in 626 040 0 0 Pa e eo Oo 5 1cm 2 0in 8 2 lis 3 2in 34 5cm 13 6in 60 3cm 23 7i m POWER CORD POTABLE WATER INLET 1 4 OD PLASTIC TUBING 5ft n MM 38 1 15 0in 81 1cm 31 9in 95 4cm 37 6in E E pu SS J SEH 68 9cm E i 27 D SH EA ee S 9 E GE l A CLE AIR AIR 15 2cm OUTLET INLET 6 0in L 29 8cm 48 3cm 11 8in 19 0in August
26. l system will not have power Initial power up Moving the master switch from OFF to ON starts the machine in a harvest mode the compressor is operating with the inlet water solenoid valve and the hot gas valve energized water enters the machine at the top of the evaporator flowing down into the reservoir After a set time of 2 minutes the inlet water valve shuts off the hot gas valve closes and the pump compressor and fan motor start operation A blue light indicates the freeze cycle mode Early in the freeze cycle when the reservoir water temperature falls enough to cause the resistance of the water temperature thermistor to change to a pre set point the controller will shut the water pump off for 30 seconds When it is shut off a red light on the back of the controller will be ON As the freezing cycle continues the suction line temperature will fall changing the resistance of the thermistor attached to it At a pre set resistance a timer in the controller will start to finish the freezing cycle A yellow light switches on and the freeze cycle will continue for 7 more minutes The Harvest or Defrost mode begins The yellow and blue lights switch off The pump and fan motor switch off The hot gas valve and inlet water solenoid valve are switched on The compressor is on any time the unit is in ice making mode Harvest continues until the thermistor attached to the suction line warms up changing its resistance to a pre se
27. l to access control 5 Place evaporator thermistor probe in ice water ice water temperature should be 0 C or 32 F 6 Plug unit in master switch in the ON position 5 minutes or more after the freeze cycle starts check reservoir water temperature When it and the evaporator thermistor s ice water are at 32 F hold BOTH upper left button and lower right button in for at least 5 seconds then release the buttons 7 The green level LEDs will turn off and the yellow Timer LED will turn on for two seconds once you have entered the test mode 8 Press upper left button and the evaporator thermistor temperature test will begin The yellow Timer LED will turn on for 2 seconds if the evaporator thermistor temperature is 32 F 2 degrees 9 Press upper left again and the sump thermistor temperature test will begin The yellow Timer LED will turn on for 2 seconds if the sump thermistor temperature is 32 F 2 degrees Note Pressing repeatedly will toggle between testing the two thermistor temperatures 10 Press upper right button and the Freeze relay will close and the blue Freeze LED will turn on for 5 seconds Compressor fan motor and pump will start If not the controller has failed 11 Press upper right again and the Pump relay will switch the pump will stop and red LED on back side of the board will turn on for 5 seconds Note Pressing repeatedly will toggle between testing the two relays 12
28. liance by a insulated but not refrigerated so ice will melt during person responsible for their safety use That is normal and assures that fresh ice is available in the bin Children should be supervised to ensure that they do not play with the appliance The fan will make some noise during operation however rattles and other vibrations are not normal and should be attended to When the air temperature surrounding the machine is cold the fan might cycle on and off during the freeze mode If the machine is in a space colder than the minimums listed it will not switch on to make ice Minor adjustments may be made to compensate for local conditions by rotating the adjustment screw visible above the control area If in a cold room CW rotation changes the control to COLDER to fill the bin higher If installed at an altitude greater than 2000 ft or 610 meters above sea level the bin thermostat may need internal adjustment The adjustment screw is behind the front of the control accessed through a hole for it Bin Thermostat Altitude Adjustment Table Altitude ft Altitude meters Degree of adjustment 9 Typical Full Bin o tt cow 15 Joere 0 1000 11 CW 2000 6 CW 3002 9 CW August 2014 Page 11 Service Manual for Models HISUOBO HISUO70 and HISUOSO Maintenance Regularly vacuum the right side of the air cooled condenser with a brush to remove all loose dust and dirt Be careful not to damage the fins
29. low water to enter the machine properly 3 Locate the On Off Wash master switch 4 Move the switch to the On position 5 Ice bridge thickness and harvest time indicator lights will switch on They will not change unless the cube size or harvest times are manually adjusted The timer light will also be on 6 The unit begins to fill the reservoir with water Two streams of water can be seen behind the curtain The compressor and hot gas valve will be energized but the fan motor and pump will be off After a time the water will have filled the reservoir but will continue to fill and excess water will drain from the machine This is normal and helps the machine from forming excessive mineral scale 7 After 2 minutes the water and hot gas valves will close and the pump and fan motors will start A blue light in the control panel will glow indicating the beginning of the freeze cycle 8 Warm air will begin to blow out the left front of the machine and water will spray up at the inverted ice making mold It is normal for a small amount of water to drip from the ice making area When the water temperature reaches a pre set point the water pump will stop for about 30 seconds then resume Freezing then continues for many minutes until the temperature of the refrigeration system drops to a set point indicated by a yellow light glowing on the control panel In colder rooms the fan motor may turn on and off After the yellow light swit
30. m in cm in cm HISU050 115 60 1 15 38 23 60 3 31 94 81 1 HISUO70 115 60 1 15 38 23 7160 3 31 94 81 1 i HISUO90 115 60 1 20 51 23 7 60 3 31 94 81 1 8 ooo Unpacking and setup Location Remove all shipping and packing materials that may The unit can be built into a cabinet as the air flow i be in the ice storage bin is in and out the front The front of the machine must not be blocked Certain maintenance or The unit can be installed with or without legs The repair procedures will require removal of the top cabinet is equipped with small bumpers on the base back and side panels so plan ahead for service and to allow placement without legs An optional floor maintenance needs mounting kit is also available to fill the gap between the machine and floor if not using legs If using legs carefully tip the machine and install the legs by screwing them into the leg sockets in the bottom of the machine For reference the thread size is 5 8 11 If the machine has been tipped onto its side or back allow 1 hour before starting the unit for the oil in the refrigeration system to return to the compressor Place the machine in its intended location and level it front to back and left to right If using legs adjust their feet in and out to level the cabinet If legs are not used the bottom edges of the cabinet Air IN must be sealed to the floor If built into a cabinet the adjacent cabinet walls wil
31. nship It does not cover maintenance corrections to installations or situations when the machine is operated in circumstances that exceed the limitations printed above This is a commercial model if installed in a residence some commercial service companies may not be able to service it on site The manufacturer has designed and produced this machine with the finest in materials The manufacturer assumes no liability for units that have been altered in any way Alterations or part substitutions will void the warranty Specifications and designs are subject to change without notice Options There are two floor mounting kits available e KADA15A for 15 models e KADA20XA for 20 model k w EE Bottom of Cabinet showing bumper Cabinet height includes bumper August 2014 Page 2 Service Manual for Models HISUOBO HISUO70 HISUOSO Pre Installation Spacing This appliance is intended to be used in commercial No additional spacing is required at the top or sides applications including However suggested minimum side clearance for installation is 1 8 inch or 3 mm and suggested e Restaurant kitchens minimum top clearance is 1 4 inch or 7 mm Bars Allow 4 inches 100 mm minimum space at the back for the utility connections Do not block louvers at the Hotels front of the cabinet Dimensions and Electrical Model Electrical Width Depth Height w o legs Total Load volts Hz Phase in c
32. or out of Check thermistor resistance to chart calibration adjustment erratic replace if incorrect Poor thermal contact of evaporator Check clip holding probe must have metal thermistor to suction line to metal contact and covered with insulation Thermistor failure unit operating Check controller for all green lights blinking on timed cycles if all blinking change thermistor set Makes ice but does not hold bridge Evaporator temperature taking Refrigerant leak check refrigeration setting gradually increases over time longer to get to cut in point system Makes ice but does not fill the bin Bin thermostat opens and shuts Unit in cold room check conditions machine off before bin is full Thermostat out of calibration replace Unit at high altitude adjust compensation screw Fresh ice will be wet Water dripping spraying on it Check curtain may be torn or not in position Check that cube deflector is correctly positioned Makes ice but is slow cannot keep Air cooled condenser is dirty Clean condenser fins Up Too much water Slight leak from inlet water solenoid valve check replace valve Air flow to cabinet restricted Confirm nothing blocking front louvers unit cannot operate in a closet Room air hot Hot air slows ice making and increases bin meltage Restricted drain Water in bottom of bin melts ice correct drain so all water drains including the water from harvest cycle Ice on top of evaporator Ma
33. rd to unit 2 Connect to cold potable water using the necessary adapters for the 1 4 inch OD plastic tube f using compression fittings they require a ferrule or sleeve and insert e A female 3 8 compression adapter x 1 4 OD compression allows connection to a typical 3 8 OD compression angle valve Another connection method is by quick connect fittings Note Do not use a piercing type saddle valve to connect to the building s water supply Valves of that type restrict water flow and clog easily Connect the drain The drain connection is at the back panel The fitting size is 74 FPT 1 Connect rigid tubing to this fitting and vent it at the machine use an 8 inch or 200 mm vertical tube for the vent 2 Slope drain tubing down from the ice machine to the building drain and the slope must be at least 74 inch per foot or 20 mm per meter 3 Insulate the drain tubing to reduce condensation and is recommended for environments that have high humidity Due to the potential for leaks condensate pumps are not recommended August 2014 Page 7 Service Manual for Models HISUOBO 50070 HISUOSO Connect the power This is a cord connected unit and must be connected to its own dedicated power supply Check the dataplate on the back of the machine to confirm the voltage and per the dataplate use fuses or HACR circuit breakers Power Cord This 115 volt model is equipped with a cord and 5 15P plug
34. section of the control panel Operate the machine for another cycle to confirm that the adjustment was correct Note that too much harvest time will slightly decrease making ice capacity August 2014 Page 27 Service Manual for Models HISUOBO HISUO70 and HISUOSO Cabinet Removal for Service 1 Remove front panel 2 Remove top panel 3 Remove door 4 Drain water from reservoir 5 Disconnect water and drain and electrical power 6 Remove back and side panels 7 Pull bin thermostat cap tube from tube in bin 8 Remove evaporator cover 9 Remove screws holding evaporator to its frame lift evaporator up out of the Way Note Support evaporator as needed to prevent damage 10 Disconnect electrical wires from water pump 11 Remove thermistor from pump hose and reservoir 12 Disconnect bin drain 13 Disconnect water supply hose from evaporator platen 14 Lift bin with reservoir off of deck 15 Remove deck cover Remove Evaporator Screws Thermostat Cap Tube August 2014 Page 28 Remove Service Manual for Models 50050 HISUO70 HISUOSO 115 60 1 Wirin Diagram J149 373343 NI NMOHS SIHLNO S3H21IMS 10 1 02 NV4 YOSNAS YOSNAS 4 31 dWal uolvgOdvA3 ULM aNNOYD pe JN ON WOD 373395 dWfld TOULNOD DINOX LJN 153 440 83132 GION310S HOLIMS AVM SYD LOH 310d 318n0Q GION110S d3Wd
35. spray Cube Deflector Must Snap Onto Reservoir Wall Edge August 2014 Page 24 service Manual for Models 50050 HISU070 and HISU090 Removal and Replacement Pump Wall Panel 1 Disconnect electrical power 2 Remove top panel 3 Remove wall panel covering pump 4 Disconnect wires from pump motor 5 Remove cube deflector and pull hose off water pump outlet 6 Rotate pump slightly CW and lift pump up and out of the ice machine 7 Install new pump in reverse order of the removal steps Spray Platform 1 Remove front panel 2 Shutunit off 3 Open door remove cube deflector by lifting it up twisting slightly and pulling out 4 Pull spray platform forward unit it releases from its snap and remove pump hose from platform 5 Remove platform from the unit Replace or service and then reinstall it Spray Platform Service 7 Slide platform back into reservoir The two halves may be separated by removing the Note Bottom of platform has a raised area that clips and pulling it apart Be sure gasket is intact and fits only on the left side Be sure platform is installed correctly placed all the way back in the reservoir and is snapped in place 8 Reinstall cube deflector be sure it is snapped onto the reservoir wall 9 Switch unit on check spray pattern August 2014 Page 25 Service Manual for Models HISUOBO HISUO70 and HISU090 Removal and Replacement Bin Thermostat 1
36. st Ice Bridge Thickness Adjustment Refer to the Ice Thickness Diagram for proper ice size Adjust by pushing the sign or sign on the ice bridge adjustment section of the control panel Changing bridge thickness should be a one time adjustment as the machine will automatically maintain that ice thickness Harvest Cycle Time Adjustment After ice has formed in the inverted mold it must be released so it can be deposited in the storage bin section The harvest cycle is when that occurs and must be long enough for the ice to release While the harvest cycle length is self adjusting it can also be manually adjusted if needed Proper harvest time is when the ice falls into the bin and there is about 10 seconds extra harvest time pump and fan are off before the freeze cycle restarts If the harvest time is too short to release the ice the time may be increased by pushing the sign on the harvest time adjustment section of the control panel Operate the machine for another cycle to confirm that the adjustment was correct Note that too much harvest time will slightly decrease making ice capacity August 2014 Page 9 Service Manual for Models 50050 HISUO70 HISU090 Initial Start Up 1 Remove the front panel by removing the two screws holding it to the cabinet and pulling the panel down and off the machine 2 urn on the water supply correct any leaks Note Water supply MUST be turned on first to al
37. t point At that time the yellow timer light will switch on Harvest time equals the minimum harvest time plus the time it takes to change the thermistor s resistance plus a final timer When all timers are satisfied harvest is complete and the freeze cycle restarts The unit will shut off any time the bin thermostat is open including while the unit is in a freeze or harvest cycle ei de co ae Unit in ice making mode freeze mode indicator light is on August 2014 Page 14 Service Manual for Models 50050 HISUO70 HISU090 Components Compressors three capacities Type Hermetic Brand Embraco Condenser air cooled forced draft copper and aluminum Evaporator Nickel plated copper inverted grid Ice Medium Full Dice cube 5 x 9 per cycle about 1 Ib per cycle Metering device Capillary tube Refrigerant R 134a Refrigerant Charge 8 ounces all models No access valves Fan motor Unit motor 50050 and 50070 are 2 3 watts HISUOSO is 6 watt Fan motor may cycle during freeze should be off during harvest as the discharge pressure will be below 100 PSIG Fan blade Molded Fan pressure control switch Opens at 100 PSIG closes at 150 PSIG Water pump OEM Hot gas valve Ported line voltage coil Inlet water solenoid valve 275 GPM flow line voltage coil Transformer Output 12 volt AC Controller Microprocessor operated relays for fan and p
38. ump Internal electronic timer Bridge thickness and harvest time adjustable on controller Indicator lights for bridge thickness and harvest time No maximum or minimum time limits or error codes Lights for timer freeze mode and anti slush mode Thermistor failure indicated by all Bridge Thickness and Harvest Time green lights blinking Unit continues to operate on a fixed timed freeze and harvest cycle Sensors Thermistor for suction line temperature Thermistor for reservoir water temperature Evaporator Thermistor Mounted above accumulator clipped to suction line Bin Thermostat Opens on temperature fall must be closed to power control system Operates compressor directly Master switch On Off or Wash DPDT not a service disconnect On When contacts 2 1 are closed power is connected to the bin thermostat allowing it to automatically switch the machine on and off At the same time contacts 5 4 are closed making a circuit to the pump common and fan motor pressure control Off all contacts open Wash Contacts 2 3 provide a connection to contacts 5 6 connecting power to the pump common Only the pump operates when the switch is in the Wash position August 2014 Page 15 Service Manual for Models HISUOBO HISUO70 and HISUOSO Performance Compressor amp draw 115 volt Freeze 5 minutes in 1 8 to 1 9 Overall Freeze cycle amps begin at 1 9 decline to 1 7 e Harvest 1 9 1 8
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