Service Manual - Scotsman Ice Systems
Contents
1. cU OO LL 67 887 988 _ 855 619 DE LC CUS H31VM 319915 511 NOILdO 00 TOL ll 0 LYM 99 Cw JJI 06 Cid amp 6 L 55055 SCLC 3110182 DI 1ld April 2015 5 3415 LHDIY ITINI YILVM MOVE juV14 8 165 N Sv 144 00 OS vl INOOM col ids 131NI Y3 LYM N ver YISNIANOD N ste 1448 6 N cU LVL X ms 35 08 00 007 Us 811 08 1 L 4 A INO 5 ldd2. Dispense Sensor m Harness Disconnect NI ZA TS x ea f 3 LLL d 5 Shutthe machine off 6 Pull the sink forward to disconnect it from the drain Plug the drain fitting with a cloth to keep it from leaking while the drip tray is being cleaned ED Lj 1 Connection 7 Wash out the drip tray and dispense chutes Use ice machine scale remover if needed to dissolve scale 8 Reverse to reassemble Be sure drip tray is pushed back fully into place Insert chutes and rotate CCW until they snap into place and stop April 2015 Page 16 HID312 HID525 HID540 Service Manual Air filter The air filter on the left side of the cabinet will capture significant dust and lint during operation As the dirt builds up it begins to restrict air flow and causes the refrigeration system to work longer to make ice Clean the air filter regularly To remove pull it forward from the louvers Do not leave it out for extended periods of time Wa wall y
3. l J 4 4 4 4 LOL AE III UL I JL 4 4 4 4 4 J A J Ei Si la TEN q m 7 I 51 115 151 IS H 4 al To clean wash it at a utility sink Return it to the unit when clean Condenser The condenser fins may need cleaning too Remove the left side air grill and brush any lint and dirt off the surface of the condenser Vacuum any remaining dirt Do not damage the fins of the condenser during cleaning i Fa th Ir o Remove Bin Cover and Ice Delivery Chute April 2015 Page 17 HID312 HID525 HID540 Service Manual Maintenance and Cleaning Dispensing Bin Components The ice storage bin and rotor must be cleaned and sanitized on a regular basis at a
4. 0011 64 8807 0l vc 619 HID312 HID525 HID540 Service Manual HID540 Cabinet Drawing 318v1snfrav UELUUSZOIDS SCC 75 LNO8J 5931 NOILdO 00 f voL 971 TYS 7981 310HD 321 sardu 319VAOW3M aL vM JJ 9 e e g April 2015 Page 6 HID312 HID525 HID540 Service Manual Placement The location of the equipment should be selected with care Consideration should be given to allow adequate space on the sides for air cooled models to breathe Minimum clearances for air cooled models 6 inches or 15 cm at each side 2inches or 5 cm above 10 or 25 cm more to allow auger removal when ceiling is fixed inches or 15 at the back Air cooled models flow air left to right More space than the minimum at the sides will maximize performance BENE Scotsman E
5. y Z gt 72 2 ee Legs 4 legs are optional for countertop applications They are not to be used on the HID dispenser when it is placed on a machine stand Note Use only legs of 4 minimum height T Set Up The drip tray and cup rest are shipped in place there is no need to attach or remove them It is a good idea to remove the front panels and inspect for any loose or rubbing parts prior to installation Panel Removal Remove one screw at bottom front of upper front panel swing bottom of panel forward and lift off the unit gt T w biti niil Twist ice and water chutes counterclockwise and pull down to remove Remove four screws from sides of lower front panel pull forward anz slightly and rest it on the tray If needed unplug sensor connector and separate panel from unit Pre Start Inspection Level the cabinet front to back and left to right Confirm there are no loose or rubbing parts Return splash panel and chutes to unit April 2015 Page 8 HID312 HID525 HID540
6. Scotsman Ice Systems Service Manual for Meridian Ice Maker Dispensers Models HID312 HID525 and HID540 HID312 HID525 HID540 Service Manual Introduction The ice maker dispensers covered in this manual HID540 is also 21 inches wide but it is 40 9 inches were designed by to be the finest on the market Their tall it is also available either air or water cooled design is a result of Scotsman s long experience in ice maker dispensers HID525 is 21 inches wide and 34 9 inches tall it is available as an air cooled or water cooled model Contents Specifications HID312 Cabinet Drawing HID525 Cabinet Drawing HID540 Cabinet Drawing Placement Counter Installations Differences Between Models Component Location Installation Start Up Operation Ice and Water Vending Controller Controller Functions Maintenance and Cleaning Air filter Maintenance and Cleaning Dispensing Bin Components Ice level controls Dispensing Bin Ice Making and Ice System Cleaning instuctions Other Maintenance Basic Troubleshooting Troubleshooting Controller Diagnostics Test Procedures Test Procedures Test Procedures Test Procedures Auger and Gear Reducer Dispensing Motor Photo Eye Bin Control Gear Reducer Auger Evaporator Water Seal and Auger Searing HID312 Wiring Diagram HID312 Schematic Diagram HID525 or 540 Wir
7. if the bin is not full and the unit is off O is displayed False bin full If the bin is not full and b is displayed 1 Check for loose connection at the harness to the photo eye sensors Check for broken wire at sensor 3 Check for something blocking the sensors which can include scale buildup Rotation Sensor The sensor consists of a pick up and a magnet The pick up has a wire that connects to the controller The magnet is in the rotating magnet holder on top of the auger motor if the rotor is loose it will not rotate and the sensor will shut the machine off for no rotation 1 Remove front and left side panels 2 Remove motor cover 3 Check that rotor has magnet and is secure to Magnet motor sha 0 Note Special thin open end wrench may be needed to hold motor shaft it fits under the magnet rotor Dispensing Motor See chart on prior page Remove splash panel UR Place voltmeter probes on motor terminals Press Dispense Ice and confirm voltage If voltage is correct and motor does not function replace dispense motor Note 230 volt motor in an 115 volt machine will rotate with an empty bin but not one with ice Be SURE to confirm voltage on label to match ice machine voltage April 2015 Page 28 HID312 HID525 HID540 Service Manual Test Procedures Refrigeration The HID refrigeration system is steady state When in operation and stabilized it will maintain nearly constant discharge and
8. 000 Airflow Direction The power outlet should be located within the length of the supplied power cord If placed on a counter the counter must be strong enough to support the weight of the unit Space above the cabinet should be allowed for service and maintenance If legs will be used allow space for the total cabinet height Air cooled models in a small room will require ventilation to exhaust the heat they produce They also produce some added noise from the fan Noise sensitive areas should consider water cooled equipment or the machine located where the noise from ice making is not objectionable Nearby infrared emitters or a window that allows sunlight to shine on a dispensing sensor may cause the unit to dispense ice or water without a container to trigger it Cafeteria applications The unit can be placed in a cafeteria line for ice and water As some users sometimes dispense too much ice high volume use may require the drip tray to be occasionally cleared of spilled ice April 2015 Page 7 HID312 HID525 HID540 Service Manual Counter Installations Units placed on a counter must either use legs or be sealed to the counter top with food grade sealant per local codes To avoid disturbing the seal complete the installation prior to sealing Note Seal Chassis to Counter do NOT Seal Drip Tray 7 W 7 7 7
9. 7 TW t 2 iij NE Mee s TT 16 Locate bin drain and disconnect it from bin fitting 17 Lift the bin up and off the chassis 18 Disconnect wires to dispense motor 19 Remove 4 bolts holding motor to machine and remove the motor 20 Install new motor be sure it is the correct voltage and attach the cooling fan blade Dispensing Sensors 1 Disconnect electrical power to unit 2 Remove splash panel disconnect sensor from harness 3 Remove 6 screws holding sensor bracket to splash panel and pull the sensor body out of the holder Install new sensor 5 Reconnect harness Reference water dispense sensors 01 is ice has male contact pin 3 pin on control top Water is 02 Connects on control bottom April 2015 Page 31 HID312 HID525 HID540 Service Manual Photo Eye Bin Control 1 Remove front panel 5 Pull clip from each photo eye holder and push holder in to release 2 Unplug photo eye from harness b will be displayed on controller L p LZ v M 6 Grasp the rubber holder and sensor pull apart to 3 Remove 3 thumbscrews holding bin top to bin separate 4 Lifttop off bin Note Be sure to hold the sensor as close as possible to the holder Do not pull on the wire 7 Insert new sensor into holder it will snap into place when pushed in far enough 8 Route sensors from inside the bin top re secure each wi
10. Page 40 SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills IL 60061 USA 047 215 4500 900 726 8762 www scotsman ice com 291 858
11. Service Manual Differences Between Models Condenser Cabinet Width Height Refrigerant Charge in cm in cm HID312A 1A 115 604 Air Counter 16 41 3 35 886 134 11 oz HID525W 1A 115 60 1 21 54 35 88 6 404 11 oz HID525A 1A 115 60 1 21 54 35 88 6 R 404A 12 oz HID540A 1A 115 60 1 21 54 411103 8 R 404A 12 oz HID540W 1A 15 60 HID525AW 1A 115 60 1 HIDS40AW 1A 115 60 1 Condenser Typical Watts Auger Motor Compressor Compressor Amps Brand Model HipszsW4A nsi waer 57 59 Copeland nsi Water t1 18 87 59 Copeland 230 601 ar Hips25w6A ar T_T Condenser Suction Superheat 70 50 Discharge 90 70 Discharge Pressure Degrees F Pressure PSIG Pressure PSIG PSIG HID312A 1A 45601 fe s 7 10 102 109 1138 145 HID525W 1A 115601 Water 3 4 245 25 245 20 HIDS40W 1A 45601 245 250 245 20 HID312AW 1A 115 60 1 6 8 17 0 102 109 1398 455 HID525AW 1A 115 6011 HIDB40AW 1A 115 6011 far o HID312A 6A 1230601 HIDS25A 6A 23 5 1 Jar J 12 April 2015 Page 9 HID312AW 1A i HID312 HID525 HID540 Service Manual Component Location Photo Electric Eye Ice Level Sensors Ice Making System Water Reservoir k Agitator Dispense Bar Compres
12. about 20 seconds At the end O is displayed Unplug the USB drive Note If during the update process the display flashes between L and F that means that the Load Failed If that happens unplug the USB drive then power cycle the control board If 0 is not displayed press the On Off button The controller will revert to the original firmware April 2015 Page 15 HID312 HID525 HID540 Service Manual Maintenance and Cleaning There are five areas of maintenance Drip tray and drain system Ice dispense bin and rotor Photo eye ice level control PU aes IY Ice making water system Drip Tray It is important to keep the drip tray clean of trash Remove any as soon as it is noticed Pour hot water into the tray on a regular basis to keep the drain open Over time the drip tray and cup rest may become coated with scale or dirt It can be removed to be scrubbed at a wash sink 1 Remove upper front panel 2 Push in vend disable switch remove Air cooled condenser filter and condenser Twist dispense chutes clockwise and pull down to 4 Remove screws holding lower front panel to unit and unplug lower panel sensors at the harness connection Set panels aside
13. been provided It is recessed into the bottom of the chute panel Push and release it to disable dispensing for 60 seconds Vending 1 This is a commercial machine It contains a powerful compressor heavy duty gear reducer and if air cooled a fan that moves a lot of air It will produce some noise when it is making ice Every effort was made during its design to minimize the sound level but some is unavoidable April 2015 Page 13 HID312 HID525 HID540 Service Manual Controller All models use the same control system The electronic controller operates the compressor with fan motor auger drive motor dispense drive motor and inlet water solenoid valve It monitors Reservoir water availability Storage bin ice level e Call for ice dispense e for water dispense Refrigeration pressure Dispense enable disable e Auger motor speed e Auger motor rotation Any installed control options Many of these are used to insure that the machine does not damage itself during use For example it is critical that it not attempt to make ice without water so if the water sensor is dry the machine will not make ice Switches there are four switches e Dispense water to test water dispensing Dispense ice to test ice dispensing On Off to switch the machine on or off Holding it in to shut off will stop ice making imme
14. directions supplied with the scale remover Use a clean cloth and wash all the interior surfaces of the bin and the bin cover agitator bar chute cover and dispense rotor with the ice machine scale remover solution Rinse with clear water Mix a 2 gallon or 7 5 liter solution of locally approved sanitizer A possible sanitizer solution is one packet of Stera Sheen Green Label and 2 gallons or 7 5 liters of warm potable water Use a new clean cloth and wash all the interior surfaces of the bin and the bin cover agitator bar chute cover and dispense rotor with the sanitizer solution Return all parts to their original positions and secure them with their original fasteners Reconnect electrical power and restart the machine HID312 HID525 HID540 Service Manual Ice level controls Clean if the controller indicates bin full and there is no ice between the sensors 1 Remove top front and top panels Shut machine off Disconnect ice level controls at connector Remove 3 screws and ice storage bin cover ET pe Pull each sensor grommet clip up and off Clip Cover Sensor Grommet Push grommets out of bin top 7 Pull each sensor out of its rubber grommet Pull on the part closest to the grommet not the wire 8 Wipe the sensor lenses clean with a soft clean cloth Caution do not scratch the lens If there is mineral scale on the lens ice machin
15. not detecting the container If yes does the Ice Dispense light glow If yes push Dispense Ice button Does the motor activate If yes go to next row If no check for voltage at motor If no voltage replace controller If voltage at motor replace motor Dispense motor working Agitator or rotor not turning remove all ice and but ice in bin not moving inspect for damage to agitator and rotor No water is dispensed No water to unit Restore water Water valve not opening Remove upper front panel check controller indicator lights Hold container in front of sensor does the Water Dispense Sensed light glow If no sensor is not detecting the container If yes does the Water Dispense light glow If yes push Dispense Water button Does the water valve activate If no check for voltage at valve If no voltage replace controller If voltage at valve replace valve Water drips from spout May be normal A few drops per minute is normal Bin drain may be plugged Check bin drain tube at basin Dispensed water is Air in the water This is normal and can vary depending upon how cloudy but clears up in a much air is in the water May be improved by few minutes lowering water pressure to the unit Water leak near front Drip tray not in position Confirm drip tray is pushed all the way back and touching the base Water filling drip tray Main drain plugged Remove splash panel and inspect basin for standing water Clear drain t
16. suction pressures Items that can affect that are e Irregular water flow e Erratic thermostatic expansion valve Changes in room air temperature Normally use of refrigeration gauges is unnecessary If the unit is making ice properly it is highly likely that all is normal Refrain from attaching gauges and then only use very short hoses to avoid changing the amount of refrigerant charge See pressure information on page 9 The compressor gets its power from the contactor which is operated by the controller It must be working or the compressor will be off Compressor Starting The HID312 uses a current relay for starting The HID525 and HID540 use a potential relay Both have start capacitors HID312 current relay The contacts of a current relay are normally open and close when the current is high They stay closed until the compressor starts and the current drops off Compressor starts but current too high overheats the relay does not open the start winding will remain powered and there will be current in the wire between the start capacitor and the compressor Replace the relay Compressor does not start Current relay contacts may be open because relay coil is open check for continuity Start capacitor may have failed HID525 or HID540 potential relay The contacts of this relay are normally closed and open when the compressor starts Compressor starts but current too high overheats the relay c
17. to the top of the post and re secure with the thumb SCrew 9 Remove cover from water reservoir Moving parts hazard Risk of personal injury Disconnect electrical power before proceeding n 10 Vend all ice from dispenser Reservoir Cleaning Position Thumb Screw 11 Remove dispense bin cover 12 Remove ice discharge chute cover from top of ice making system 13 Pour cleaning solution into reservoir Caution solution is highly acidic Use rubber gloves and Do Not Spill April 2015 Page 21 Scotsman Ice Machine Cleaner contains acids These compounds may cause burns If swallowed DO NOT induce vomiting Give large amounts of water or milk Call Physician immediately In case of external contact flush with water KEEP OUT OF THE REACH OF CHILDREN HID312 HID525 HID540 Service Manual 14 17 18 19 Push the Clean button The unit will operate the auger motor for 30 minutes and then stop Note Stop at any time by pushing the On Off button 15 16 Disconnect unit from electrical power Drain the scale remover solution from the water system by pulling the reservoir drain hose from its plug and return it to the plug when drained Pour 24 ounces or liters of clean potable water Into the reservoir Drain the water from the water system by pulling the reservoir drain hose from its plug and return it to the plug whe
18. to the touch If the overload is open and the compressor is not hot the overload itself could be the problem Overloads also open due to high current and a shorted winding could cause that Check for shorted or grounded windings with a multimeter High superheat is caused by lack of refrigeration possibly from low charge or a TXV starving the evaporator April 2015 Page 29 HID312 HID525 HID540 Service Manual Test Procedures Auger and Gear Reducer Auger The auger must be clean and undamaged to work properly Remove it from the evaporator to confirm Note A wet auger will appear clean dry it to check for scale Damaged auger flight edges are not repairable and the auger must be then be replaced Clean Undamaged Auger Auger Motor The auger motor is a PSC motor with a capacitor If the motor will not start check first for voltage to the motor Note The replacement motor is supplied attached to a gear reducer cover Remove the motor from the cover and attach it to the gear reducer A reversed motor code 1 is a strong symptom of a motor that should be replaced Gear Reducer The gear reducer is a sealed component No gears or shaft bearings are available A gear reducer without motor is available A properly operating gear reducer will operate quietly and draw a consistent amount of amps It will not leak lubricant Oil discharge is a strong indicator of water infiltration and is cause for
19. GER DRIVE DRIVE RELAY Pe HPC c CONTACTOR WATER DISPENSE M CONTACTOR BIN DISPENSE PRINTED CIRCUIT BOARD ASSEMBLY FAN AC ONLY COMPRESSOR April 2015 Page 38 HID312 HID525 HID540 Service Manual HID525 or 540 Wiring Diagram JN WIRE COLOR FUR 208 230 60 1 AND 115 60 1 UNITS BLACK WIRE COLOR FUR 208 230 50 1 UNITS BROWN 7 3489 01 A ware conce FOR ise UNITS n Ta E COOLED IN Y Bem cono l A POWER IN BL ICE DISPENSE O lt o BIN F K gt Em PHOTO TRANS 8 BIN FULL MITTER nes b J _ AUGER ORIVE 4 Las WIR vr gt SENSIR CHASSIS GROUND O O n P l H20 RX TX ICE Ed US a oe 222 CAUTION A MORE THAN ONE DISCONNECT MEANS MAY BE MU REQUIRED TO DISCONNECT ALL POWER TO THIS UNIT ALL CONTROLS SHOWN IN ICE MAKING MUDE WITH ALL DISPENSING SYSTEMS IN OPERATION April 2015 Page 39 HID312 HID525 HID540 Service Manual HID525 or 540 Schematic Diagram POWER SUPPLY SEE NAMEPLATE UNIVERSAL POWER SUPPLY AUGER DRIVE AUGER DRIVE RELAY CONTACTOR PRINTED CIRCUIT BOARD ASSEMBLY COMPRESSOR START CAP 1112 POT RUN RELAY s o 2 5 RELAY ALL CONTROLS SHOWN IN ICE MAKING MUDE WITH ALL DISPENSING SYSTEMS IN UPERATIUN April 2015
20. abuse and any resulting damage is not covered by warranty and could cause a complete loss of warranty coverage Warranty Information 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 workmanship It does not cover maintenance corrections to installations or situations when the machine is operated in circumstances that exceed the limitations printed above Product Information The product is an ice maker dispenser It is designed to be installed on a countertop or on a specific machine stand All models require a drain An internal drain basin separates the ice storage bin s drain from the drip tray drain e A backflow preventer may be required by local plumbing codes e 60 Hz model has a 7 5 ft power cord with NEMA 5 15P plug Air cooled models flow air left to right and include a cleanable air filter 4 10 cm legs are optional for counter models Thread size 3 8 16 Special models are required for wall mounting ce or water vending is triggered by touch free sensors no other activation method is available Foravailable options and kits see sales literature Scotsman Ice Systems are designed and manufactured with the highest regard for safety and performance ocotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have be
21. d from leaking by a water seal at the bottom The bearings are permanently lubricated and need no maintenance The can be visually checked for obvious wear or damage but there is no need to add lubrication Auger motor bearings and the gear reducer are also permanently lubricated and need no maintenance The bottom of the ice making system should be checked for water leaks Water draining from the bottom is an indication of a water seal leak Immediate repair is required when a water seal leak is discovered Caution Moving parts hazard Do not touch the rotating shaft at any time ez Rotating Shaft DO NOT TOUCH April 2015 Page 23 Bearing HID312 HID525 HID540 Service Manual Basic Troubleshooting No ice is dispensed No ice in bin check controller code push On Off button to restart water supply Restore power High pressure control opened Controller shows code 4 water interrupted to water cooled model Restore water and reset controller Ice level control sensing full bin falsely Controller shows b Clean ice level control sensors Dispense motor not turning Remove upper front panel check controller indicator lights Hold container in front of sensor does the Ice Dispense Sensed light glow If no sensor is
22. diately e Clean to engage the clean mode Indicators there are nine LEDs Power Glows when controller has power e Status Glows when in ice making mode Time to Clean Glows when it is time to clean the machine Water Dispense Sensed glows when the water dispense sensor has been triggered ce Dispensed Sensed glows when the ice dispense sensor has been triggered e Water Dispense glows when the inlet water solenoid valve has been powered Ice Dispense glows when the ice dispense motor has been powered e Auger glows when the auger motor is on Compressor glows when the compressor is on If blinking the water or ice dispensing time limit has been met There is also a code display the codes are for off F for ice making b for bin full E for controller error C for clean mode d fortest mode for auger rotation direction wrong for auger speed too slow 3 for no water sensed for high refrigerant pressure If a number code is triggered the controller will stop ice making A blinking code means it is a temporary condition Example A blinking occurs during the ice making restart process it stops blinking when the compressor starts The controller will automatically restart from a water interruption or power interruption or when a refrigerant pressure switch has automatically reset To reset
23. e scale remover will be needed to wipe them clean 9 Return each sensor to a grommet push it in until it snaps into place 10 Reverse the rest of the steps to reassemble April 2015 Page 19 HID312 HID525 HID540 Service Manual Dispensing Bin The dispensing bin may be removed for cleaning or to provide service access to other components 1 Gothru steps 1 thru 10 of the Bin Cleaning Procedure above 6 Remove the chute mounting Remove chute cover panel Remove ice sweep and ice discharge chute Ice Discharge Chute 7 Remove splash panel disconnect sensors from harness and set panel aside 6 Locate two plastic knob bolts under the bin Remove them 9 Locate bin drain and disconnect it from bin fitting Dispense Drive Pin 10 Lift the bin up and off the chassis Clean as needed J a 9 Twist and remove the water and ice dispense 2 chutes er 2222 April 2015 Page 20 HID312 HID525 HID540 Service Manual Ice Making and Ice Dispensing System C
24. ed light is Ice Dispensed Sensed light is on lt Pu m n C 2 g Q O ct O Il 2 April 2015 Page 26 HID312 HID525 HID540 Service Manual Test Procedures Dispensing Sensors Remove upper front panel check controller indicator lights Dispense sensor and system Test Hold Opaque Container in Front of Sensor Does Proper Dispensed Sensor Light Glow No gt Repco sens Sensor is working Continue test Push proper dispense button its dispensed light is ON oes motor o water valve activate Does motor o water valve activate No Attach voltmeter to valve or motor push correct Dispense button and confirm voltage Yes Ice or water Voltage v No Cine Vor ERIT Replace controler No gt causes dispensed Yes Y System Passed Test April 2015 Page 27 Correct Yes Y Replace motor or valve HID312 HID525 HID540 Service Manual Test Procedures Photo Eye Bin Control Remove front panel Check controller code display If the unit is in ice making mode status light on there will normally either be an F or a b displayed If the bin is full b is displayed If the bin is not full and the unit is in ice making mode F is displayed
25. en altered in any way including the use of any part and or other components not specifically approved by Scotsman Scotsman reserves the right to make design changes and or improvements at any time Specifications and design are subject to change without notice April 2015 Page 3 HID312 HID525 HID540 Service Manual HID312 Cabinet Drawing 31avisnrav MAIA JAIS LHDIY MAIA 1NOtid 2 2 dee CO 9900 B 65 5 i NIVYO HAMOd 00 Og ldd p E _ SCE c T 89 H31VM _ 58 3uv14 8 E Bb 3SVHI FN 107 P E b L s 0 LVL 3 al Ku i 3SVH2 ALIILN Fa 3LNHD 32 08 26 Qoi J18VAOW3H _ MOTI HIV HIV 887 988 8 vc I 6291 619 April 2015 Page 4 HID312 HID525 HID540 Service Manual HID525 Cabinet Drawing 1 1 831 VM B E f SpA N 681 IM N PEN 1 H31VM c YISNIONOI 1d48 081 19 DM YASNAGNOD ldd 144 ut 3SVHO doc Us ASVHD 08 34915 LHDIY 65 00 OS vL zor 89
26. f the equipment Connect drain tubing to the central drain fitting at the back of the cabinet Use 3 4 inch rigid tubing use material to meet local codes The drain basin in the machine will act as an internal vent no additional vent should be required unless there is a very long horizontal run Drain tubing must pitch down 1 4 inch per foot to the building drain Insulation of drain tubing is recommended for most environments Water cooled models Connect water or coolant supply if using recirculating system to the condenser inlet Connect drain or return if a recirculating system to the condenser drain Use only rigid tubing Do not vent this drain tube Condenser Inlet Power Cord 1 Condenser Drain Water Cooled Utilities Electrical Supply 115 volt models Plug the unit into a dedicated 15 amp outlet The unit must be the only device on the circuit Confirm the outlet is properly grounded and is in good condition Worn outlets should be replaced as they can cause erratic operation of equipment Do not use an extension cord Do not cut off the ground plug on the power cord Ground fault outlets are not recommended If ground fault is required a ground fault breaker should be used Use the services of a licensed elec
27. he extruder breaker 2 Remove the clip holding the bearing 3 Tap out the old bearing Use the old bearing as something to tap on and drive the new bearing into the extruder 5 Reinstall the clip Bottom Bearing 1 Go thru the process of removing the auger 2 Remove the 4 allen head screws at the bottom of the evaporator 3 Remove the bolts holding the bearing retainer to the gear reducer 4 Separate the gear reducer evaporator and bearing retainer o Remove the clip 6 Tap outthe old bearing 7 Use the old bearing as something to tap on and drive the new bearing into the extruder April 2015 Page 36 HID312 HID525 HID540 Service Manual HID312 Wiring Diagram BACK CONTROL BOX m eR BN START COMPRESSOR RELAY nn AIR COOLED ONLY amano N POWERIN COMPRESSOR x OVERLOAD BIN FULL 2 DETECTOR PHOTO TRANS ICE DISPENSE MOTOR 5 MW 0 7 a d EMITTER WATER LED 5 3 AUGERDANE 4 en MOTOR 3 GN CHASSIS GROUND e e I SPEED amp DIRECTION SENSOR EE RIT H20 RY TXICE E HIGH PRESS i d 1 COM 1 SWITCH perd April 2015 Page 37 HID312 HID525 HID540 Service Manual HID312 Schematic Diagram POWER SUPPLY SEE NAMEPLATE UNIVERSAL POWER SUPPLY AU
28. holding the magnet rotor If needed use the special thin 3 8 open end wrench to hold the 3 Remove splash panel motor shaft 4 Drain reservoir 4 Remove the original drive motor 5 Remove top panel 5 Separate the replacement drive motor from the 6 Remove storage bin cover shipping casting 7 Slide chute cover back and remove 6 Install the rotor of the replacement motor into the 8 Unscrew ice sweep gear reducer 9 Lift up and pull ice chute off evaporator of the replacement motor to the 10 Remove four 1 4 inch hex socket head socket 8 Attach the magnet rotor to the new motor shaft 11 Return ice sweep to auger 9 Attach the sensor and its holder to the motor 12 Lift on ice sweep to remove auger 10 Attach the motor cover to the motor Reconnect wires April 2015 Page 34 HID312 HID525 HID540 Service Manual Evaporator 1 Go thru all steps to remove the auger 7 Lift evaporator and off the bottom bearing retainer The stationary half of the water seal will in the bottom of the tube The rotating half is on 3 Recover the refrigerant charge the auger 5 T 2 Gothru all steps to remove the bin 4 Remove foam wrap from bottom of evaporator 5 Remove the four 1 4 inch hex socket head screws 8 Confirm auger is un damaged at the bottom of the evaporator 9 Install new water seal 10 Replace bottom and top bearings 11 Attach new evaporator to adapte
29. ing Diagram HID525 or 540 Schematic Diagram April 2015 Page 2 Observe any caution or warning notices They are important and provide notice of potential hazards HID312 is 16 inches wide and air cooled only Keep this manual for future reference HID312 HID525 HID540 Service Manual opecifications The ice maker dispenser is designed to be installed indoors in a controlled environment Although it can operate in a wide range of air and water temperatures it will provide the best performance if not subject to extremes Air Temperature Limitations e Maximum 100 F or 38 C Minimum 50 F or 10 C Water Temperature Limitations e Maximum 100 F or 38 C Minimum 40 F or 4 4 Water Pressure potable e Maximum 80 PSI or 5 5 Bar Minimum 20 PSI or 1 3 Bar Water Pressure condenser inlet e Maximum 145 PSI or 10 Bar Minimum 20 PSI or 1 3 bar can be as low as 5 PSI or 3 Bar if clean amp supplied with 45 F water Condenser GPM 70 F water 25 or 95 LPM e 50 F water 15 or 57 LPM Water Conductivity Minimum 10 microSiemens cm RO water may be supplied to the potable water system but if it has less than the above conductivity the water level sensor will not detect water and the unit will not make ice Deionized water will not work and isn t recommended Voltage 60 Hz e Maximum 126 Minimum 104 Operating the machine outside of any of the above limitations is considered
30. leaning Instructions Hand tools cleaning supplies and hand protection are recommended for this procedure Frequency Recommended minimum time between cleanings is 6 months To aid in determining if the machine has not been cleaned in 6 months a Time To Clean light will glow after 6 months of power up time Cleaning the machine with the following process will reset that light and the timer that controls it More frequent cleanings may be required based on the mineral content of the water run time and potential airborne contamination 1 2 4 Note Drain into drain basin in base of unit Sink must Remove both front panels Push On Off button to shut ice making off Shut water supply off Drain water from ice making system by pulling reservoir drain hose from plug at drain basin and return to plug when drained be attached to unit throughout this process Reservoir OT Drain Hose 4 Reservoir 2 e Drain Basin Drain Plug 5 Remove reservoir cover and fill with hot 110 120 degree F water wait 2 minutes and drain water from ice making system by pulling reservoir drain hose from plug and return hose to plug when drained Mix a solution of 16 oz or 1 2 liter of Scotsman Clear 1 ice machine scale remover and 16 oz or 1 2 liter of clean potable water 7 Loosen thumb TT screw holding water reservoir to post 8 Lift water reservoir
31. minimum when the ice making system is cleaned Hand tools and hand protection like rubber gloves are recommended for this procedure Note Some steps overlap with the procedure on the next page This procedure can be independent of the ice making system cleaning or can be part of it Bin Cleaning Procedure 1 Remove upper front panel 2 Remove top panel 3 Shut machine off 4 Vend or melt out all ice Note Only add 16 oz or 1 2 liter water to the bin at a time as excess water will drain out the spout 5 Disconnect ice level control at harness Moving parts hazard Risk of personal injury Disconnect electrical power before proceeding Unplug or disconnect unit from electrical power Remove ice storage bin cover set aside Remove agitator rotate CCW set aside oe 9 Remove 2 thumbscrews amp chute cover set aside lt gt Agitator A Chute Cover Q e hinl April 2015 Page 18 10 Lift up and remove dispense rotor set aside 11 12 13 14 15 16 Dispense Rotor Dispense Drive Pin Mix a solution of ice machine scale remover such as Scotsman Clear 1 and potable water per the
32. n drained Mix a solution of 4 ounces or 118 cc of ice machine scale remover and 16 oz or 1 2 liter of potable water Use this scale remover solution to washout the water reservoir cover ice discharge chute ice chute cover ice delivery chute storage bin cover and inside of the ice storage bin Also wash the sink drip tray and grill with this solution Pour half down the bin drain and the rest into the sink drip tray to flush out their drains Sanitize now 20 21 22 Z9 24 29 26 2f 28 29 Mix a 2 gallon or 7 5 liter solution of sanitizer A recommended sanitizer solution is one 2 oz packet of Stera Sheen Green Label and 2 gallons or 7 5 liters of warm potable water or an equivalent sanitizer at a concentration of 100 ppm Pour the sanitizer solution into the reservoir until it is full level with the molded line on the side Reconnect electrical power Push the On Off button to make ice for 10 minutes Add more sanitizer to the reservoir to keep it full while making ice Push the On off button to stop making ice Disconnect electrical power Remove the ice outlet cover dispense rotor and ice dispenser agitator from the bin Wash them with the sanitizer solution Wash all inside surfaces of the ice storage bin and ice discharge chute with the sanitizer solution Wash the ice discharge chute cover ice sweep metal area below the ice sweep and ice dispense chute with the sanitizer
33. o and from basin April 2015 Page 24 HID312 HID525 HID540 Service Manual Troubleshooting Symptom Possible Cause Probable Correction No ice in bin Auger motor not operating Open windings Check motor windings and replace if open Gear reducer seized replace gear reducer Auger bearings seized replace bearings and seal Replace controller motor and isn t loose Tighten screw if loose Compressor not operating Compressor hot and overheated check start relay and start capacitor No power to compressor or contactor coil Compressor light is ON Replace controller Compressor at room temperature will not start Check windings If open replace compressor If not open check replace start relay and start capacitor Compressor operating Check refrigeration system TXV may be set to too auger turning no ice is much superheat or the system is low on refrigerant made Excessive noise Tubing contact Check for tubes rattling and panels not tight Fan blade out of balance Replace fan blade Replace compressor Moaning noise when Water seal being Gear reducer bearing failure replace gear reducer making ice compressed Dispense motor not No voltage to it Check dispense light if on there should be voltage turning If none replace motor but ice in bin not moving breakage shaft Too much ice in drip tray Users are taking ice and Glass size too small use larger glass dumping it Water leak near front D
34. ontacts do not open there will be current from the start capacitor Replace the relay Compressor does not start Relay contacts open check for continuity Replace relay if open Start capacitor may have failed Capacitor Testing Capacitors may be tested using a multimeter but begin with a visual test A good indication of a failed capacitor is one that is bulging or leaking If the capacitor looks ok check it with a multimeter 1 Discharge the capacitor 2 Seta digital meter to a high resistance scale of at least 4k 3 Putthe probes on the capacitor terminals and observe the display It should provide a reading and then show Open Line If no reading the capacitor has failed and should be replaced If the meter has a Capacitance setting use it to measure the capacitance replace if not near to the mfd listed on it Compressor Testing Because the compressor is the hermetic type the available testing methods are limited Some items that can be measured are winding resistance and amp draw If the compressor does not start and a check with an amp meter shows it does not draw any current it is likely it has an open winding or overload Those can be checked using a multimeter If the compressor is hot the overload may be open An open overload is an indication of a worn compressor defective starting components or high superheat Note Normal operating temperature of the compressor dome is 85 95 degrees F warm
35. r 12 Replace the dryer and evacuate the system to at least 300 microns 13 Weigh in the nameplate charge 6 Un braze the evaporator refrigerant inlet and outlet April 2015 Page 35 HID312 HID525 HID540 Service Manual Water Seal and Auger Bearings Water Seal 1 Go thru all steps to remove the auger 2 Remove the 4 allen head screws at the bottom of the evaporator 3 Lift the evaporator up and off the bottom bearing retainer 4 Push the water seal up on one side until it twists grab it and pull it out 5 Remove the rotating half from the bottom of the auger 6 Clean the auger shoulder and add a very thin bead of food grade sealant to the bottom of the auger Sealant Rotating Part of Water Seal 7 Carefully push the new rotating half of the water seal up against the sealant as far as possible It should seat tightly and straightly against the auger shoulder Do not put fingerprints on the sealing surface 8 Wet the outside edge of the stationary half of the water seal and insert it into the bottom of the evaporator 9 Slip the evaporator onto the bottom bearing retainer the bearing retainer will push the water seal up into the correct position Note The bottom bearing should have been replaced at this time 10 Secure the evaporator to the bearing retainer with the original socket head screws Be sure they are tight Top Bearing 1 Go thru the process of removing t
36. re is a Test Mode The Test Mode operates each load in sequence to confirm that it is being powered by the controller To start Test Mode Push and HOLD the ON OFF button at the same time push and HOLD the CLEAN button When a d appears in the code display release the buttons the test mode will begin Time seconds O j Compesor 7 AugerGear Motor Water Disp Ice Disp Water Dispense Auger Gear Motor Compressor Ice Disp Auger Gear Motor Compressor Water Disp All Test Complete The Time to Clean indicator light glows when 6 months of power up time have elapsed When it is on it does NOT stop ice making It is cleared and reset when the Cleaning process has been completed The Cleaning process described in detail in the Maintenance section is initiated by a press of the Clean button The auger motor will be operating during the entire Clean mode No ice will be made The scale is dissolved by the action of the scale remover and the auger s motion Pushing the Disable switch closes contacts of the switch signalling the controller to ignore the dispense sensor s signals for 60 seconds USB firmware updates may become available To update the unit must be in Test Mode and then a USB stick with ONLY the update on it is inserted into the USB connector L will be displayed during the Loading process After a few seconds the top five LEDs begin scrolling up for about 75 seconds then the LEDs start scrolling down for
37. replacement High amp draw could be caused by scale build up in the evaporator Clean it first then check amp draw Confirm the top and lower bearings are not seized or rough A motor that rotates but the output shaft does not turn indicates a stripped gear and is cause for the gear reducer section to be replaced If there is full voltage to the motor check the capacitor and motor windings replace the motor if the winding is open Replace the capacitor if it is damaged open or weak April 2015 Page 30 HID312 HID525 HID540 Service Manual Dispensing Motor Removal must remove the bin 1 Vend or melt out all ice Note Only add 16 oz or 1 2 liter water to the bin at a time as excess water will drain out the spout 2 Disconnect electrical power to unit Electrical Shock Hazard Disconnect electrical power before beginning Remove front top side and upper back panel Remove splash panel Disconnect ice level control at harness Remove ice storage bin cover set aside Remove agitator rotate CCW set aside Remove 2 thumbscrews amp chute cover set aside 9 Lift up and remove dispense rotor set aside 10 Remove ice sweep 11 Remove ice delivery chute and chute cover 12 Remove dispense motor drive pin 13 Twist and remove the water and ice dispense chutes 14 Remove the chute mounting panel 15 Locate two 3 prong knob bolts under the bin Remove them
38. rip tray not in position Add small amount of food grade lube to the drip tray hard to push all the way in drain stub or o ring in drain fitting Glass does not trigger Glass is too clear Confirm by testing dispense with hand behind glass dispense light April 2015 Page 25 HID312 HID525 HID540 Service Manual Code or Light Action Bin sensors sense bin full Test mode None allow unit to finish test mode Auger motor rotated auger Replace auger motor Check water backwards seal area for leaks replace seal if leaking Auger motor stalled or operating Clean ice making system and retry slowly If unit shuts off again right after a reset magnet rotor on motor shaft may be loose No water in reservoir Restore water If there is water is it too pure Are sensor wires connected High pressure cut out open Check fan motor on air cooled or water supply on water cooled Water dispense sensed light Container positioned in front of Normal controller has a time limit blinking water dispense sensor for more for dispensing Remove container Water dispense light blinking than 24 seconds Ice dispense sensed light blinking Container positioned in front of ice Ice dispense light blinking dispense sensor for more than 20 seconds otatus light is on Unit is in ice making mode Normal may not be making ice if bin is full Time to Clean light is on Unit has not been cleaned for at Clean unit least 6 months Water Dispensed Sens
39. solution Wash the sink drip tray and grill with the sanitizer solution Pour remaining sanitizer into the bin and sink Do not overfill bin April 2015 Page 22 30 31 32 33 34 35 36 38 39 40 Drain sanitizer from ice making system by pulling reservoir drain hose from plug and return hose to plug when drained Loosen thumb screw holding water reservoir to post and lower the water reservoir to the top of the slot retighten thumb screw Return the chute cover dispense rotor and agitator to the inside of the storage bin Secure with the original fasteners Return the ice dispense chute and water reservoir cover to their original positions and secure them with their original fasteners Reconnect water and electrical power to the machine Push the On Off button to restart ice making Operate machine for 5 minutes and then push the On Off button to stop ice making Pour 16 oz or 1 2 liter of warm potable water into the bin Repeat until the ice has been melted Return the dispense bin cover to the machine and secure with the original screws Push the On Off button to resume ice making Return all panels to their normal positions and secure with the original screws Ice Sweep Ice Discharge Chute HID312 HID525 HID540 Service Manual Other Maintenance The auger in the ice making system is centered by bearings at the top and bottom It is also seale
40. sor Control Box Dispense Rotor NM Electronic Controller 9 Ice Dispense Compressor Sensor Drain Basin and Manifold Water Dispense Drip Tray Sensor April 2015 Page 10 HID312 HID525 HID540 Service Manual Installation Installation should be done by an experienced ice machine installer To locate one call the number on the back of this manual or go to Scotsman s website www scotsman ice com to identify a local distributor or service company The machine will require power water and drain Locate the water supply fitting on the lower back of the cabinet and obtain the correct fitting to connect the water supply Plumbing Fittings Potable water inlet 3 8 male flare Cabinet drain 3 4 FPT Water cooled condenser inlet 3 8 FPT Water cooled condenser drain 1 2 FPT Drain Tubing T l a Potable Water Connection Air Cooled Utilities All models Connect the potable water supply to the inlet at the bottom back of the unit 3 8 OD tubing recommended Water filters may be used but are not required Note that activated carbon or charcoal water filters are used for taste and odor problems but also take out any chlorine that the local water agency may have added for purification That can require more frequent sanitization o
41. tate and sweep ice over the ice dispensing chute Ice will continue to discharge out this chute as long as the rotor is turning It stops when the rotor stops If the user does not remove the container ice will be dispensed for 24 seconds and then stop If the container is in front of the Touch Free sensor on the right side the inlet water valve will open and water Will flow into the container If the user does not remove the container water will be dispensed for 20 seconds and then stop Note Water may dispense cloudy and then clear up in the glass That is normal due to air in the water and is not an indicator of any malfunction Other notes e An occasional drip may be seen from the ice dispense chute This is normal and is from ice melting inside the chute A continuous stream of water from the ice chute indicates a restricted bin drain Clear containers glass or plastic may not always activate the dispense sensors Retry with an opaque container he drip tray is not a sink and cannot tolerate garbage Coffee and soda should not be discarded into it Debris like stirring straws that are discarded into the drip tray will likely cause a drain back up and need to be removed as soon as they are found e Both dispensing and ice making are disabled when the unit is switched off at the controller oplash panel wipe off Wiping the splash panel could result in unintended dispensing To avoid that a disable button has
42. th a clip on the outside 9 Place bin top on bin secure with the thumbscrews 10 Reconnect to harness and check that the b goes out 11 Return front panel to its original position April 2015 Page 32 HID312 HID525 HID540 Service Manual Gear Reducer Removal bin removal recommended 18 Disconnect wires to auger motor 1 Vend or melt out all ice 19 Remove 3 screws holding motor cover to motor Note Only add 16 oz or 1 2 liter water to the bin ata 20 Remove 4 screws holding rotation sensor holder time as excess water will drain out the spout to motor 2 Disconnect electrical power to unit Electrical Shock Hazard Disconnect electrical power before beginning Remove front top side and upper back panel Remove splash panel Remove ice storage bin cover set aside Remove agitator rotate CCW set aside 3 4 5 Disconnect ice level control at harness 6 7 8 Remove 2 thumbscrews amp chute cover set aside 21 Use a cordless impact driver to remove the screw holding the magnet rotor If needed use the 10 Remove ice sweep special thin wrench to hold motor shaft 11 Remove ice delivery chute and chute cover 22 Remove four 1 2 hex head bolts secur 12 Remove dispense motor drive pin 9 Lift up and remove dispense rotor set aside ing 13 Twist and remove the water and ice dispense chutes 14 Remove the chute mounting panel 15 Locate two 3 prong knob bol
43. the control when it has been manually locked out Push and release the On Off button to shut it Off and then Push and release it again to switch it On Note The compressor will not restart for 4 minutes from the time it was shut off April 2015 Page 14 HID312 HID525 HID540 Service Manual Controller Functions The controller has features for the service technician Some details Any auger motor failure is an immediate shut down Because of the critical nature of that failure there is no auto restart from an auger error An open Water Sensor dry probes will stop the machine Because water can be restored at any time whenever both Water Sensor probes are wet again AND the compressor has been off for at least two minutes ice making will restart e An open High Pressure switch will stop the machine Because the pressure switch is an automatic reset when it closes AND the compressor has been off for at least two minutes ice making will restart e Fault Code View Push and HOLD the vend disable button then push and hold the on off button for seconds or until Status light is on Release both Pushing Clean will cycle thru the available codes the total number of codes stored is 30 e Clear codes Push and HOLD the vend disable button then push and hold the Clean button for about seconds The display code will blink 3 times Release both The compressor will not restart until it has been off for at least 2 minutes he
44. trician when needed and conform to local and national codes Position the unit in its final location Level the unit front to back and left to right Seal to the countertop as required per local codes April 2015 Page 11 HID312 HID525 HID540 Service Manual otart Up 1 Remove upper front panel it with a locally approved sanitizer or a mixture of 2 Open the water hand valve observe that water 1 ounce of household bleach to 2 gallons of water enters the water reservoir fills and then shuts off allow to air dry Check for leaks Repair any leaks before going 10 Reconnect electrical power any further 11 Push the On off button to switch the machine on 3 Switch electrical supply on Lights on controller 12 Replace all covers and panels will flash and then the power light will remain on The code display will show 2 19 Give the owner user the user manual instruct him her in the operation and maintenance 4 Push and release the On Off button The machine requirements of the unit Make sure they know will start the ice making process The code display who to call for service will show F Air cooled models will discharge warm air out the right side water cooled models will 14 Fill out the Customer Evaluation and Warranty discharge warm about 110 F water out of the Registration form and mail it in to Scotsman Or condenser drain register the unit at Scotsman s website w
45. ts under the bin Magnet Remove them Rotor 16 Locate bin drain and disconnect it from bin fitting 17 Lift the bin up and off the chassis Y e x Que I evaporator assembly to gear reducer cover 23 Remove four 1 2 hex head bolts securing gear reducer condensate pan to chassis 24 Separate gear reducer from evaporator and lift it from the machine 25 Remove three 1 4 hex socket head screws securing pan to gear reducer Install new gear reducer Be sure vent plug is open April 2015 Page 33 HID312 HID525 HID540 Service Manual Auger It is the manufacturer s recommendation that the top bearing bottom bearing and water seal be replaced at the same time Extruder Breaker 2 4 5 6 Remove top panel Remove storage bin cover Slide chute cover back and remove Unscrew ice sweep Lift up and pull ice chute off evaporator Remove four 1 4 inch hex head socket screws Auger Motor The auger motor may be replaced without removing the gear reducer Due to manufacturing and testing reasons the replacement auger drive motor is supplied mounted on a gear reducer cover It is not necessary to replace the gear reducer cover 1 Remove 3 screws holding motor cover to motor T Lift breaker off auger 2 Remove 4 screws holding rotation sensor to Auger motor 1 Shut water off to machine 3 Use a cordless impact driver to remove the 2 Disconnect electrical power screw
46. ww scotsman ice com 5 In minutes ice will begin to fall into the dispensing bin Check ice dispensing by holding a container in front of the Touch Free ice sensor just below the ice delivery spout Ice should flow from the spout when a container is present and stop dispensing when the container is removed 6 Check water dispensing by holding a container in front of the Touch Free water sensor Water will flow when a container is present and stop when it is removed 7 Push the On Off button to switch the machine off 8 Unplug or disconnect electrical power 9 Remove the top panel and the top of the ice storage bin Scoop out any ice in the bin and sanitize the interior of the ice storage bin by wiping ON OFF ee lt April 2015 Page 12 HID312 HID525 HID540 Service Manual Operation Ice and Water Vending During ice making soft ice is compressed thru a die and then broken off into irregular lengths It will not be clear and because of melting when dispensed it will not be uniform in size or shape 22 pa Dis pense ispens Dispensing takes place when the Touch Free sensor s infrared beam bounces back to the sensor from a container placed directly in front of it If the container is in front of the Touch Free sensor on the left side the ice dispensing rotor will ro
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