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G Series Cuber Installation and Service Manual

1. 21 HOT GAS VALVE ema ncaa on E 21 E E A E 22 ICE CAPACITY CHECK PROCEDURE 2 2 21 22 ICE THICKNESS CONTROL DIAGNOSIS 22 CHECK PROCEDURE inst ERR 22 CHECKING THE THERMISTOR au pibus nsa Co ann 23 ICE THICKNESS CONTROL REPLACEMENT 24 ICE THICKNESS CONTROL ADJUSTMENT 2 222222 24 SAFETY THERMADISG 24 CHECKING THE THERM O DISG iiskikokEERI 25 THERMOSTATIC EXPANSION nnne nnns nnns nnn nnn 25 CHECKING THE EXPANSION VALVE 25 MATER a ae eee nee A A 25 DISASSEMBLY OF A SERVEND WATER PUMP 26 WATER REGULATING VALVE ea Fol ERE 26 SYSTEM EVACUATION last tc dad arces aC 27 SELF CONTAINED SYSTEM ACCESS POINTS
2. 27 REMOTE REFRIGERATION SYSTEM ACCESS POINTS 28 CHARGING THE SYSTEM 29 CLEANING UP A CONTAMINATION 29 6 5006772 Revision June 19 2003 Servend Installation and Service Manual TABLE OF CONTENTS WIRING DIAGRAMS ssssssssssssssssssssscssssecssssecssssecssssecesssecssssecesnsecssnecessneessneess 30 SPECIFICATIONS 39 DATA ARI STANDARDS amp WATER CONSUMPTION 39 OPERATING LIMITS e 39 PRESSURE TEMPERATURE CHART FOR R 404A 40 G2 SPECIFICATIONS T 43 GA SPECIFICATIONS 44 G5 SPECIFICATIONS 45 46 GIU SPECIFICATIONS 47 G12 SPECIFICATIONS 48 KG CONDENSER SPECIFICATIONS 49 COMPRESSOR SPECIFICATIONS nisie opos 50 MODEL G2 Ger
3. COPPCCT VOLTAGE T L m 27 OF JCE M rinG COMPRESSOR Gub CUN POTENTIAL CONT 1B he Lite THEPMUDZC THE PRD SL l 5 E Ji 1 MITE m Dd ni ba i 718 e ca E 1 HEPNIS IDE Td TE PELL CEMEL CCUM AIN SENSOR ETTEL TUMAR NOTES SLECVC JUMPER POSITIONED bS SHOWN FOR 21 00 VIRES FRON CUBCR 10 HOWEL WITH BALL xin CH L3 L PRON REWDIC WILL mmer i B Imm Swi tert 45 Stubs CLECTRICAL SCP ICC THROUGH DISGOWWCOCT 809 CURTAIN i YICWED OF 5006772 Revision June 19 2003 37 Servend Installation and Service Manual WIRING DIAGRAMS WIRING DIAGRAM AND REMOTE CONDENSERS 115 vULT 6D SINGLE PHASE EXPORT 300 50 HZ SINGLE PHASE MODELS 5 05 208 290 VOLT 60 Hz SINGLE PHASE DELE EXPDIKT 200 VOLT SO SINGLE PHASC El2 PC am
4. P 55 MODEL G2 W M 56 MODEL raaraa aee 57 MODEL GA 58 MODEL GSA cainii a ia 59 MODEL G5 W m 60 MODEL G7 61 MODEL G7 W 62 MODEL cog aao 63 MODEL LIP 64 MODEL G10 m 65 MODEL GAOR e 66 MODEL 67 MODEL GAZ 68 MODEL OZ deck d Ra ual b dob LAO OU ER HANE AA I UD ARR DUE 69 5006772 7 Revision June 19 2003 Servend Installation and Service Manual SERVEND CUBER MODEL NUMBERING SYSTEM Example MODEL G 7 5 1 2 3 4 5 6 7 1 lt Series of the machine R 502 refrigerant 30 or 48 wide cuber R 502 refrigerant 22 wide cuber Ice Storage Bin R 404A ice machines all widths 2 Nominal Capacity 24 hours 100 pounds i e 7 700 pounds 3 Type of Condenser Air Cooled Water Cooled Remote Cooled As gt 4 Size of Cuber M Mini Cube 3 8 x 7 8 x 7 8 Full Cuber 7
5. 15 ICE MAKER CLEANING PROCEDURE 16 cp ences 16 4 RELAY CIRCUIT BOARD SERIES 007 16 ten ein tater ete 16 4 RELAY CIRCUIT BOARD SERIES 008 MICROCHIP 17 SEQUENCE OF OPERATION DAE Rp A rr RT SENA C 17 4 RELAY CIRCUIT BOARD COMPONENTS nennen nennen nnn nnn nnn nnn nnn nnn nn 17 5006772 5 Revision June 19 2003 Servend Installation and Service Manual TABLE OF CONTENTS 4 RELAY CIRCUIT BOARD tp asso 18 CHECKING THE CIRCUIT BOARD 18 COMPRESSOR amp START COMPONENTS 19 COMPRESSOR CONTACTOR 20 CHECKING THE CONTACTOR 20 EVAPORATOR M ET P 20 FAN CYCLE CONTROL sportessinppASFOEFRPHEVEDRE ar 20 FLOAT VALVE EE EEEE 20 HALL SWITCH ee a RM 20 HEAD PRESSURE CONTROL VALVE 21 HIGH PRESSURE CUT OUT
6. 50 SINCLE PHASE 208 7220 WOLT 60 SINGLE 290 50 SINGLE PHASE c EXPORT 220 240 011 20 SINGLE PHASE lt CHECK SERIAL PLATE FOR CORRECT lt SHOWN AT BEGINNING OF MAKING CYCLE 2 GND COMPRESSOR 14 BLACKO COMPRESSOR CONJI6C TOR 4 4 CONTAC 106 b PURPLES I 15 12 af POTENTIAL HIGH PRESSURE 5 P h AICE 5 13 BLACK 50 AIR COOLCO z uNITS gt PURPLE TRANSFORMER B m P TDLBLE gt 8 SWITCH TEC NOTE 4 L 1E z f 44 m NODE 2 5 ENC of i Led MeN UAL a i DMP SWITGH ste i NORMAL T Ime 177 6 i lle 16 O 2 CONTACTOR E nu SOLENOID CYELLOMO Cr ELLDWwA SOLENCED al E THKER tor 2 THERH STOR CC 1000255 HeLL EFFECT sd CUP TAIN 52450 lo SLEEVE AFER POSITIONED SHOW 3 FAN ON amp JP ECELED UNITS OLY MODELS WITH HALL EFFECT CURTAIN SWITCH FAN WIPCO DIRECT TO BOARD 2 DIP SWITCH SET AS SHOWN FOR 10GGLE SWITCH VIEWED FROM FACK ON CLRT4IN OPERATION DF SWITCH 5006772 31 Revision June 19 2003 Servend Installatio
7. 18 5 5 z ec T SWITCH 12 aft MITE 5 OUNF 5 6 SEL ERO a ID m 9 RE D E 061 a SELEMTD MELLO PALL ITECA T NOTES 7 00 w PC F POM CUECP 10 1 SLEEVE POSIIDKCD SHOWN FUR COMBE MILF WILL BC WIPCD DIRECTLY 10 ELECTRICAL 2 WITCH AS EHOW COR ZIPVICC HPOH MADR CART 028 45 TOGGLE TWITCH VIEWED OF SYTH 5006772 Revision June 19 2003 33 Servend Installation and Service Manual WIRING DIAGRAMS Fea a WIRING DIAGRAM 5402904 AIR WATER ICE TIL FTD 011 SIME Feat 200 YOLI SINGLE I FEET VOLT B Ha SINGLE 4 SERIAL POR CORRECT 4 Lijs ZHDwH 21 Eida EF ICE Heri C ELE 112 Em lind rPIUPFLE POTENTIAL FEL 5 SUNT enn w 0 2 CP 3 FRAN OPW 1 amp 17 BRDN EADP CooL 5 TEN u Ges 7 MELLOW DUMP Wu SLEIN Me Lm T oF UP HALL gend OUP 1418 SEMED NOTES gt SLEEVE PUZITORMED AS Ta Pete HO
8. CELE Se Cd DR WOMELS WALL CUM bih Peltor COOLED zwl LH ECT AS Soi DGAC FROM Ont oF Seer 34 5006772 Revision June 19 2003 5006772 Servend Installation and Service Manual WIRING DIAGRAMS P apua WIRING D AGRAM 5004245 ICE SINGLE ell CePOPT 200 1 50 SIMGLE VOLT 0 4 MOICCHOCK SERIAL POR VOLTAGE t 11 ECGIMMONG OF ICC CYCLE LLI PPLIIUF COTTE 110 SEUNTPCTER PTIENTIAL RELAY CONTAC TOR 14 LACES YBLALE TOGGLO HE n 1 PrE L LETRA 3 DUMP gt 5 CRO HALL end AIR NOTES SLEEVE JUMPER POSITIONED 85 SHOWN FOP a ee 5 WIH HALL CLAI ASIN S IICH Li AMD Le COMING FROH 5 WILL SC 10 ELCCIPICAL 2 SWITCH SET 5 SHOW FOR MSEE 807 UNE OPERATION 4 IGAC WIEWOD FROM BREF Revision June 19 2003 35 Servend Installation and Service Manual 36 WIRING DIAGRAMS WIRING DIAGRAM Pate
9. cessive pressure developing in the high pressure side of the refrigeration system This switch will open the power circuit to the circuit board at 35 2 kg cm 500 PSI This is a manual reset control located beside the power toggle seitch To reset this control push the red button in In the event the high pressure control shuts down the machine find the reason for this shut down Correct any necessary problems then restart the machine HOT GAS VALVE SerVend employs a hot gas defrost method of harvesting the ice When the ice reaches the proper temperature the ice sensing control initiates the board to open the hot gas bypass valve This electrically operated solenoid valve will allow hot discharge refrigerant gas leaving the com pressor to return to the inlet of the evaporator The flow of liquid refrigerant from the expansion valve will then cease The hot refrigerant warms the evaporator therefore allow ing the ice to melt and slide off the evaporator If the hot gas valve fails to open check the electric power supply to the coil of the valve This power supply is supplied to the coil from the circuit board The power should be checked in parallel and should be present when the red LED is energized If there is power to the coil without the coil operating remove the wire leads from the coil of the valve Place your continuity meter on the coil terminals You should have continuity at these terminals If there is no continuity r
10. 70 50 F 80 70 F 250231 5535 169 1SII4l 1227 09 476 90 70 F 289264 64 7 199 168159 136127 08 478 90 90 F 289264 64 40 226 169162 136132 08 478 110 100 F Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 57 Servend Installation and Service Manual MODEL 4 These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 7 1 6 213 2 13 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG MODEL G 4W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 80 70 F 252 24 54 32 141 135 112 107 7 7 90 90 F 276 269 64 36 150 144 122 115 110 100 F 301 297 71 37 160 153 132 125 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 58 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 5 A These are average statistics Your particular figures will va
11. HZ PH START 65 72 86 30 115 60 1 MDF MDF 330v 4407 ELECTRIC COMPRESSOR COMPRESSOR COMPRESSOR LRA RLA CODE VOLTS BRAND MODEL RELAY NUMBERS HZ PH NUMBER GEN ELEC WHITE RODGERS B Copeland RS64CIE CAA GE 3ARR3CT2455 59 0 15 2 115 60 1 WR 128306 16435K RLA on 60 Hz units specifications on 50 Hz units from compressor mfg specifications MODEL ELECTRIC OIL RECHARGE OVERLOAD CAPACITOR CODE VOLTS POLYOLESTER TRIP POINT HZ PH START 0 F A 41 oz 15 3 AMPS 3 10 1 16 145 174 3 MFD MFD 208 230 60 1 220 v 370 v D 41 oz 14 2 AMPS 3 79 1 39 130 156 30 MFD MFD 220 240 50 1 250 v 370 v _ 208 230 60 1 WR 128306 1643SK 220 240 50 1 WR 128306 1653VK on 60 Hz units U L specifications on 50 Hz units from compressor mfg specifications ELECTRIC COMPRESSOR COMPRESSOR COMPRESSOR LRA RLA CODE VOLTS BRAND MODEL RELAY NUMBERS HZ PH NUMBER GEN ELEC WHITE RODGERS 52 5006772 Revision June 19 2003 Servend Installation and Service Manual COMPRESSOR SPECIFICATIONS MODEL CODE VOLTS A 17 4 AMPS 2 66 1 08 208 230 60 1 D 17 5 AMPS 2 64 3 35 220 240 50 1 HZ PH NUMBER GEN ELEC WHITE RODGERS 208 230 60 1 WR 128306 1643SD 220 240 50 1 WR 128306 1653SK on 60 Hz units U L specifications on 50 Hz units from compressor mfg specifications COMPRESSOR COMPRESSOR COMPRESSO
12. There is a minimum freeze time built into the circuit board This minimum time is not in effect on an initial freeze cycle of the machine For optimum life and performance of the ice maker the bridge should be a minimum of 3 mm 1 8 to a recom mended thickness of 5 mm 3 16 in the center of the sheet of ice Allow the ice maker to make two 2 complete sheets of ice before making any bridge thickness adjustments Make these adjustments with the machine in the off po sition Adjustment to the bridge thickness is done at the circuit board On the bottom front of the board in the control box is a set of 8 DIP switches To have a thicker bridge turn the next right switch To have a thinner bridge turn the next left switch It is acceptable to have all of the switches either on or off Follow the indicator 5006772 Revision June 19 2003 Servend Installation and Service Manual wedge above the switch case for thicker or thinner bridge The switch is on if the top is pushed in For future service on this equipment place your phone number on the front or side panel of the machine Before leaving be sure the owner understands the ice maker operation and the value of preventative mainte nance REMOTE START UP PROCEDURE Remove the left side panel from the ice maker Locate the receiver tank Remove the service valve stem cap from both receiver tank valves Open the receiver valves fully ba
13. compressor or evaporator any purchased from SerVend part is covered by the parts warranty These components compressor or evaporator are covered for period of one 1 year from date of purchase or proof of installation of said purchased part s The owner of the equipment will be required to pay for any labor to replace these defective parts The owner shall also be responsible for transportation costs to obtain and return any defective parts The purchased parts policy shall cover any part or component supplied as a standard original equipment part is covered under this warranty 5006772 3 Revision June 19 2003 Servend Installation and Service Manual FREIGHT CLAIM LOSS OR DAMAGE The delivery freight company distributor or dealer is responsible for loss or damage to your merchandise All claims must be filed with the party that delivers your merchandise Check the number of containers delivered against the number shown on your receipt If the total is not correct have the driver note the shortage on your receipt Check all cartons for visible damage open and check the contents of any carton in question before the driver leaves Be sure the driver notes the type and degree of damage on your receipt All damaged merchandise must be inspected within 15 days of delivery Please notify your carrier immediately If concealed damage is found when merchandise is unpacked place the packing material with the merchandise and reques
14. 1 graduation at a time To increase thickness with this poten tiometer turn the control clockwise To decrease thickness turn this control counterclockwise 4 RELAY CIRCUIT BOARD CHECKING THE CIRCUIT BOARD There are only two checks you must make in the field on this board 1 If the LED along side the relay is energized the relay should be energized With your meter in parallel to the component you are testing you should observe voltage If there is no voltage the relay board is defective 2 If you are experiencing bin control problems and have tested the Hall switch to be good take a voltage test Remove the Hall switch leads from the positive and the negative terminals With the toggle switch in the ICE position and your meter set to D C volts place the leads on the corresponding terminals Your voltage read ing should be from 12 to 24 volts D C If you have any other voltage reading check the transformer load side If the voltage is the same as found at the circuit board verify the incoming voltage to the transformer is correct If the transformer is putting out the correct voltage change the circuit board If the transformer is putting out the wrong voltage with correct line voltage change the transformer Transformer actual voltage should read AC voltage 5006772 Revision June 19 2003 COMPRESSOR 4 START COMPONENTS When compressors fail to start or run properly normally it is aresult of an external f
15. 8 x 7 8 x 7 8 J Jumbo Cube 7 8 x 7 8 x 1 1 2 5 Electric Code VOLTS CYCLE PHASE 208 230 60 1 115 60 1 208 230 200 220 60 50 1 220 240 50 1 208 230 60 3 6 S Stainless Steel Panels blank Painted Panels 7 Generation Code A B C etc 8 5006772 Revision June 19 2003 Servend Installation and Service Manual SERVEND SERIAL NUMBER SYSTEM Effective August 12 1991 all SerVend dispensers cubers and bins manufactured by SerVend International have a new serial numbering system SAMPLE 94 H G 01 0001 Year Month Product Major Change Unit Manufactured Code Code S N The above serial number is defined as Hotel dispenser built in August 1994 1st unit built under major code 1 MONTH MANUFACTURED PRODUCT CODE January A A Seried obsolete FebruaryB B KD Seried obsolete March C C M Series April D D MD Series May E E B Series June F Series July G G Cubers August H H Bins September J J Drop In October K 7 Remote Condensers November L December M Alphabet codes will not use the letter I to prevent confusion with the number 1 Unit Serial number will roll back to 0001 at the beginning of each new year and or with each major change code MAJOR CHANGE CODE IS AN ENGINEERING TRACKING CODE FOR SERVEND USE major change code of identifies an engineering field test unit 5006772 9 Revision June 19 2003 Serve
16. These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE m DEGREES AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURH TIME MINUTES MINUTES Measurments in metric units Pressure KG CM2 Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURH TIME MINUTES MINUTES 6 12 90 11 62 4 18 5 09 60 0 26 50 08 57 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 66 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 12 A These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSUR TIME MINUTES MINUTES 221 21 10 C 169 48 2718 9 117 557 125 221 26 21 C 32 21 32 32 43 38 C Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT D
17. and eye protection Turn the selector switch to the off position Remove all ice from the storage bin Pour 4 oz of approved cleaner in the water pan Turn the toggle switch to the pump position Allow this solution to circulate over the evaporator for 10 minutes While the solution is running in the machine take some of the solution on a rag to wipe the inside of the machine and the water curtain Clean the air cooled condenser and fan blade of all dirt Push the purge switch and hold When the solution in the water pan has been flushed out release the purge Switch Allow the water to refill the pan Circulate this refill water over the evaporator for three 3 minutes Then repeat pushing of the purge switch and hold When the solution in the water pan has been flushed out release the purge switch Allow the water to refill the pan Turn the toggle switch to the ice position Discard the first batch of ice 16 SANITIZE CYCLE Turn the toggle switch to the pump position Push the purge Switch allowing the water in the water pan to drain out Allow the water to refill the pan and check the water level Adjust the water level if required Add 7cl 1 4 oz unscented laundry bleach 5 2596 CI Na O concentration mixed to yield 200 PPM of avail able chlorine to the water pan Allow the pump to circu late the solution for five 5 minutes ALTERNATE You may use the commercial ice ma chine sanitizer following the direc
18. and verify before turning power on to the machine Turn power on to the machine e Has the water inlet pressure been checked ls it within guidelines Are water filters installed Are water shut off valves open Are the drain connections made properly Is the bin drain separate from the ice maker drain When used is the water cooled condenser drained separately Arethe cuber and bin drains vented at the rear of the equipment with an open stand pipe Are all drain lines vented at the floor Arethe drain lines insulated and sloped to the open floor drains 5 there 15 cm 6 clearance around the cuber for ventilation 15 the cuber installed in ambient temperatures with a mini mum of 10 C 50 F or above 38 C 100 F WARNING If the air temperature drops below 10 C 50 F the unit must be shut down 15 the water temperature maintained between 7 C 45 F and 32 C 90 F WARNING the water temperature drops below 5 C 40 F the unit must be shut down Does the water curtain move freely s the water level set properly in the water pan sthe water pan seated properly on the plastic sup port blocks ice maker and the bin sanitized sthe air cooled baffle installed if necessary to pre vent condenser air recirculation f the ice maker is being installed with an ice dis penser is the ice deflector installed 5006772 Revision June 1
19. base of the leg gussets se cure the condenser to the mounting surface Remember to properly seal all roof and wall penetrations INSTALLATION OF THE REMOTE TUBING Unpack the pre charged tubing from the carton Care fully unroll the tubing BE SURE YOU DO NOT KINK THE TUBING Position the tubing in its proper location Do not connect any of the tubing ends at this time When making a roof penetration proceed as follows Cut a 10 4in hole in the roof Seal around the line set at the hole with appropriate sealant Place a roof flange over the tubing penetration sealing again 11 Servend Installation and Service Manual INSTALLATION OF THE REMOTE TUBING Decide if the tubing is of the proper length A service loop is advisable behind the ice maker head If you must coil the tubing you need to shorten the length as de scribed below Servend has line sets available in 6 m 20 ft 10 m 35 ft and 15 m 50 ft To ease service SerVend has placed access ports on each end of both tubes You may need to lengthen the remote tubing maximum total length of 15 m 50 ft Evacuate the charge in the tubing Cut the lines and insert the needed length The size of the condenser incoming line is 1 2 and the re mote discharge line is 5 16 These are O D refrigeration tubing size Solder the sections together and evacuate the tubing You man add one or two ounces of refrigerant to act as a holding charge You may need t
20. can be 12 detrimental to the components of the machine and can not be ingested by some of your customers The incom ing water pressure must not exceed 8 4 kg cm 120 psi and not lower than 1 4 kg cm 20 psi Water supply lines to the water cooled condenser should include a standpipe for the prevention of water hammer Locate shut off valves in all water supply lines It is impossible to connect a water cooled condenser to a recirculation system or cooling tower However you must maintain a minimum of 7 kg cm 10 psi pressure drop across the condenser when operational DRAINS To ensure trouble free drainage vent the cuber and bin drains to the atmosphere at the cabinet Each of the drains should have a 25 cm 10 standing vent pipe to the atmosphere This allows oxygen to enter the drain slowing the formation of algae in the drain Venting also relieves back pressure on the drains allowing faster and easier water removal Drain lines require a drop of 6 mm 1 4 per 30 cm 1 line length Lines should end over an open trapped vented drain ELECTRICAL CONNECTIONS SELF CONTAINED All supply wiring and connections must conform to na tional and local codes Properly size wiring and electri cal protection devices to the nameplate specifications Connect the cuber to a separate location between the cuber and the protection device You must ground the cuber by the control box ground screw provided or a proper co
21. equipment should always include an anti water ham mer stand pipe in the supply inlet water line as close to the cuber as possible 5006772 Revision June 19 2003 SYSTEM EVACUATION In the event a refrigeration system is opened for repairs the refrigerant must be recovered the system evacuated and recharged according to refrigerant weight You MUST always change the filter drier when opening the refrigera tion system for repairs Evacuation of the system includes a vacuum to 200 microns Hold this vacuum for 5 minutes You may expect a slight loss of vacuum as normal up to 500 microns A rapid rise to normal atmospheric pressure indicates a system leak A slow rise to approximately 1000 microns indicates moisture is present in the system Servend Installation and Service Manual SELF CONTAINED SYSTEM ACCESS POINTS The SerVend ice makers have two service valves on each machine These are located in the control box at the front of the machine When taking any pressure readings at tach your set of gauges to these valve ports Also use these connections in the event you need to recover or re charge refrigerant SUCTION LINI VALVE La AJP HOT G4s SOLE MOID P mo HIGH 570 SERVICE VALVE COFESSOR LIQUID LIME DPCP Qo HIGH LOW SID T 7 E Lr SH DDF VALVE 5006772 Revision June 19 2003
22. figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 096 1 03 2621C ___ 174 55 4021 129 120117 10 098 08 093 ____32210 179205 4420 164 136 30 15107 06 099 205174 3919 164 136 32 115 108 06 098 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE TEMPERATURE DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE MINUTES MINUTES 80 70F 248220 5730 129 170 167 142139 08 90 70F 254291 6328 164 193 185 164152 06 90 90F 291 248 5527 164 194 187 164 154 06 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 55 Servend Installation and Service Manual MODEL G 2 W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER SUCTION CYCLE PRESSURE PRESSURE TIME ____55 I75173 3420 96 10498 8682 08 100 __ 174173 3420 108 104101 9 088 08 100 43
23. water curtain and place a torpedo level on the face of the evaporator With the level held against the lower edge of the metal evapo rator level the unit left to right This is done by the utiliza tion of shims between the ice maker head and the dis penser Place the level in the vertical position on the face of the evaporator Level the machine from front to back evaporator plumb IS CRITICAL TO HAVE THE EVAPORATOR PLUMB AND LEVEL Install the ice deflector baffle in the evaporator space be hind the front panel Remove the front panel from the cu ber Remove the bottom screw from the component box cover Slide the ice deflector between the left side panel and enclosure and between the component box cover and enclosure Slide slot and notch in ice deflector over the front channel Install the screw in the component box cover Replace the front panel on the cuber Refer to the drawing on previous page INSTALLATION INSTRUCTION REMOTE CON DENSER Follow the standard installation instructions for the re mote condenser head These instructions are listed pre viously in this section of this manual Do not power the ice maker unit before the remote system installation is complete INSTALLATION OF A SERVEND REMOTE ICE MAKER WITH CONDENSER CAN VOID ALL FACTORY WARRANTIES LOCATION OF REMOTE CONDENSER The placement of the remote condenser is very impor tant Place the condenser where the air flow th
24. 16 This adjustment is accomplished in two ways First the curtain should have little lateral left to right move ment If the curtain moves laterally more than 1 5 mm 1 16 the addition of a curtain shim behind the curtain plate is necessary If the curtain moves less than 1 5 mm 1 16 with more than 1 5 mm 1 16 clearance or touching the Hall switch you must ad just the position of the switch To adjust the Hall Switch loosen the lock nuts on the body of the switch allowing proper placement of the switch 13 Servend Installation and Service Manual STACKING KITS Stacking allows more ice production in the same foot print size All G5 and larger SerVend ice makers are stackable with the same physical size ice maker When ordering a stacking kit for your machine always order by using the model number of the bottom ice maker EXAMPLE You have G 7 ice maker installed and wish to add additional capacity You can then order a K7 SK stacking kit for the lower machine Then you could place either another G 7 on top or install a G 9 machine on top INSTALLATION INSTRUCTIONS Install the bottom ice maker on the bin according to the ice maker installation instructions Remove front panel top cover component box cover and left side cover of the bottom ice maker On air cooled units ONLY Remove the right side and back panels Install support bracket item 3 as shown in Figure 1of the instructional diagram Re
25. 38C 217 87 5820 193 132128 11512 06 096 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE TEMPERATURE DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSUR TIME MINUTES MINUTES 4040F 249246 4828 96 148140 122 216 08 222 08 ____ 308266 8229 193 188 182 163 159 06 212 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 56 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 4 A These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER SUCTION CYCLE PRESSURE PRESSURH TIME 26201C ___ 176 162 3925 169 10699 8682 09 22 3201C 203 86 5526 199 118112 9689 08 22 3202C ___ 203186 4528 226 11913 9693 08 22 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE TEMPERATURE DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURH TIME MINUTES MINUTES 40 40 F
26. 9 2003 START UP PROCEDURE SELF CONTAINED Open the potable water valve to the machine Allow water to fill the water pan Check the water level in the pan The water level should be up to the water level mark in the water pan with the float at rest Adjust the water level if necessary Apply power to the machine Turn the toggle switch to the pump position Check the water flow across the top evaporator extrusion The water flow should be even across the top If the water creeks across the top with Streams and dry spots clean the top extrusion with a SCOTCH BRITE pad or CLEAN shop cloth Do not rough up the extrusion with any abrasion material With the water pump on in the pump position check the dump valve Depress the manual dump switch and hold This should clean out most of the water in the water pan while allowing the float to refill the pan When releasing the purge switch the flow of water through the purge valve should cease Place the toggle switch in the off position to allow the water to refill the water pan Place the toggle switch in the ice position The com pressor condenser fan if air cooled and water pump will operate Depress the manual harvest switch The water pump and fan motor will stop The harvest sole noid will open Swing the water curtain open and hold for a maximum of thirty 30 seconds The compressor will stop Release the water curtain The machine will restart in the ice making mode
27. CLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSUR TIME MINUTES MINUTES 21 10 C 146 52 2254 86 109 113 9296 10 22 26 21 C 32 21 179 189 2030 117 139 43 7578 08 22 32 32 C 1821791 16 20 123 143146 7179 08 22 43 38 C Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES Lb 70 50 F 207216 31 49 86 155 061 131 37 10 49 80 70 F 90 70 F 255 268 28 42 197 203 106 111 90 90 F 259 271 23 43 203 207 101 112 08 110 100 F Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 63 Servend Installation and Service Manual MODEL G 10A These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 275 2 75 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are averag
28. CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 70 50 F 234 214 37 24 153 158 78 80 4 98 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 61 Revision June 19 2003 Servend Installation and Service Manual MODEL G 7 W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTHS MINUTES 24 m Em 24 23 24 12 4 12 9 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES b 2 5 19 90 70F 255248 3826 12 160 84 125 52 L AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSUR TIME MINUTES MINUTES 5 110 100 F 295 270 46 25 176 183 95 98 Measurments US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 62 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 7 R These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CY
29. E PRESSURE PRESSURE TIME MINUTES MINUTES 22 321 168187 1828 99 115 5358 15 22 2 1 2 1 4838C 239267 2234 161 179 9196 08 21 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE DEGREES AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES Lb 70 50F 239 266 2540 99 ____ 340 380 3149 161 25 130 36 08 46 Measurments US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 69 Servend A Qant OWOC company Manitowoc Beverage Equipment 2100 Future Drive Sellersburg IN 47172 1868 Tel 812 246 7000 800 367 4233 Fax 812 246 9922 www manitowocbeverage com In accordance with our policy of continuous product development and improvement this information is subject to change at any time without notice Printed in The United States of America 5006772 Revision June 19 2003
30. EGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSUR TIME MINUTES MINUTES 70 50F 241 210 3826 9 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 67 Servend Installation and Service Manual MODEL G 12 W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 229 2 29 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURH TIME MINUTES MINUTES 5 05 110 100 F 310 286 47 21 193 196 105 94 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 68 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL 12 These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIM
31. ELECTRONIC ICALE 27 Servend Installation and Service Manual REMOTE REFRIGERATION SYSTEM ACCESS POINTS On SerVend remote ice makers there are two access valves at the front of the unit When evacuating the equipment you CANNOT use the high side valve for access into the system There are check valves in the system that will prevent evauation from the access valves Access to the system for evacuation purpose is through a four point ice maker connection Place your manifold hoses from your vacuum pump to the following connections FCCCIVCP SCPVICE VALVE PIP Sea 28 gt 1 Access discharge tubing of the line set in the back of the ice maker head 2 Receiver inlet valve 3 Low side access vlave 4 High side access valve All of these points must be accessed for complete evacu ation due to check valves etc in the system GEL XDLIHMCDO i cate weye CLOCIROMG SCALES 5006772 Revision June 19 2003 CHARGING THE SYSTEM Charging the system by sight glass system pressure amperage temperature or wound are NOT acceptable The ONLY acceptable methods of charging a SerVend ice maker are through the use of an electronic scale or charging cylinder On a self contained ice maker begin with the ice maker refrigeration system in vacuum introduce the proper charg
32. G SERIES CUBER INSTALLATION amp SERVICE GUIDE Part Number 5006772 Servend a conary Manitowoc Beverage Equipment 2100 Future Drive Sellersburg IN 47172 1868 Tel 812 246 7000 800 367 4233 Fax 812 246 9922 www manitowocbeverage com In accordance with our policy of continuous product development and improvement this information is subject to change at any time without notice Printed in The United States of America 5006772 Revision June 19 2003 Servend Installation and Service Manual WARRANTY POLICY SerVend retains the right to refuse payment for the following conditions Premium labor rates holidays overtime travel time flat service call charge mileage or material charges SerVend will not pay for Corrections to your installation to instruct you how to care for your equipment maintenance leveling or cleaning Replacement of fuses circuit breakers building wiring or plumbing to accommodate installation of this equipment Repairs to this equipment when used in a non approved installation or removal of equipment for repairs Repairs due to improper installation or correcting original installation Repairs due to transportation or mishandling Adjustments to SerVend equipment Repairs when accessibility of equipment is hindered by ambient conditions Repairs to parts or systems caused by unauthorized modifications Return service calls for the same problem Any claim submitted wit
33. HITE RODGERS GE 3ARR3CTI10V5 iei Copeland JS35CIE CAA WR 128146 1653AK GE 3ARR3CTI10A5 23 8 5 0 USD Copeland JS35CIE CAV WR 128146 1653AK D GE 3ARR3CTI10A5 22 1 3 7 220 240 50 1 Copeland JS35CIE PAJ WR 128146 1653AK on 60 Hz units U L specifications RLA on 50 Hz units from compressor mfg specifications 50 5006772 Revision June 19 2003 Servend Installation and Service Manual COMPRESSOR SPECIFICATIONS ELECTRIC OHM VALUE OHM VALUE CAPACITOR CODE VOLTS POLYOLESTER TRIP POINT START RUN HZ PH WINDING WINDING START RUN G4 B 20 oz 14 2 amps 4 08 0 59 243 292 15 115 60 1 MFD 115v C 20 oz 7 5 AMPS 18 30 2 10 43 52 208 230 60 1 MFD 220 v D 20 oz 5 6 AMPS 5 47 3 59 88 106 220 240 50 1 6 29 2 99 MFD 330 v 370 v ELECTRIC COMPRESSOR COMPRESSOR COMPRESSOR RELAY LRA CODE VOLTS BRAND MODEL INUMBERS GEN ELEC att NUMBER HITE RODGERS GE 3 ARR3CT5M5 ai Copeland RS43C1E CAA WR 128306 1633MK 0 5 24 1 5 4 208 230 60 1 Copeland RS43C1E CAV WR 128306 1653VK D GE 3 ARR3CT10B5 22 9 4 0 220 240 50 1 Copeland JS55CIE CAZ WR 128306 16438K on 60 Hz units U L specifications RLA on 50 Hz units from compressor mfg specifications 5006772 51 Revision June 19 2003 Servend Installation and Service Manual COMPRESSOR SPECIFICATIONS MODEL ELECTRIC OIL RECHARGE OHM VALUE OHM VALUE CAPACITOR CODE VOLTS POLYOLESTER START WINDING RUN WINDING
34. R CODE VOLTS BRAND MODEL RELAY NUMBERS MODELO ELECTRIC OIL RECHARGE OVERLOAD CAPACITOR CODE VOLTS POLYOLESTER TRIP POINT HZ PH 1 16 145 174 30 MFD 20 START RUN A 41 oz 15 3 AMPS 3 10 208 230 60 1 220 v NAE D 41 oz 21 5 AMPS 3 79 1 39 130 156 30 MFD 220 240 50 1 250 v m ELECTRIC COMPRESSOR COMPRESSOR COMPRESSOR CODE VOLTS BRAND MODEL RELAY NUMBERS HZ PH NUMBER GEN ELEC WHITE RODGERS 208 230 60 1 WR 128306 1643SD 220 240 50 1 WR 128306 1653VK on 60 Hz units U L specifications on 50 Hz units from compressor mfg specifications 5006772 Revision June 19 2003 53 Servend Installation and Service Manual COMPRESSOR SPECIFICATIONS PART NAME ELECTRIC VOLTAGE HZ OHM VALUE WATTAGE ____8 O 11560 1490 O N A C 208 230 60 1 545 N A C Am _ D J 22024 501 545 N A Pump Motor B 194455 208 230 60 1 77 5 Lo meme LL 220 40 501 ANDE PART NAME ELECTRIC VOLTAGE HZ OHM VALUE WATTAGE REN ARMEN CODE PHASE 9 ___ Motor seen 220240501 __ 14 9 B 7 225 G usen 3B353 07 2024 00 _ 70 35 D 2024501 375 D 220140500 5 50 54 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL 2 These are average statistics Your particular
35. S In regards to filter driers on SerVend R 404A equipment the following is SerVend policy Whenever entering a refrigerant system on a SerVend ice maker always replace the filter drier The replacement filter drier must be of one size larger than the original equipment filter drier according to the replacement chart found in the specification section of this manual When making any repair to the sealed system under warranty the filter drier is considered a part of the repair to the system and SerVend driers MUST be used If the filter drier is not replaced or SerVend parts are not used in the repair all warranties are voided 4 5006772 Revision June 19 2003 Servend Installation and Service Manual TABLE OF CONTENTS WARRANTY POLICY cecinere rct sati tatione 3 PURCHASED PARTS WARRANTY r aaa 3 FREIGHT CLAIM LOSS OR DAMAGE 4 SAFETY INSTRUCTIONS croci ete cee asse reno Ue pam bns 4 REFRIGERANT LEAK AND REPLACEMENT POLICY 4 RE USE OF CURRENT REFRIGERANT 222 dones rra p M SCR S PR 4 REPLACEMENT OF FILTER DRIED 4 SERVEND CUBER MODEL NUMBERING 5 5 8 SERVEND SERIAL NUMBER
36. SSOR LIQUID LINE DPCP ao HIGH 5106 Low sie 1 U SH DDF VALVE 5006772 Revision June 19 2003 ELECTRONIC ICALE 29 Servend Installation and Service Manual 30 WIRING DIAGRAMS a WIRING DIAGRAM AIRS RIP IGE 35 VULT SINGLE PASE 100 VOLT 34 SINGLE 5 24 VULT BD PHAZE LI MO ECCE Piet VO TADC SHOWN AT BEGINNING OF JCE MAKING GYGLC 20 109 GOW ldi mn COMTACIOR _ PES 0 3 eo 00 9 m PUB 5 SWITCH MON 6 Poe NL 16 17 B EG ullum 2 actor ECL rem 3 10 3 7 GAs 64 1 cw ELL Ow B 7 7 HENGI NOTES ILEEWE POLITIOED AL T FAR AJP CETA E Ph Led Te FOILS WIH HALL CMEC SWITCH irto Soro SYCH SCT AS SHOWN TOGGLE FROM BALF OFAN 5006772 Revision June 19 2003 Servend Installation and Service Manual WIRING DIAGRAMS WIRING DIAGRAM G4 AIRZWATCR CE 15 VOLT 60 SINGLE PHASE ExPOPT 00
37. SSURE MAXIMUM SELF CONTAINED REMOTE DEGREES F 500 100 10 110 45 90 vA DEGREES C 10 38 29 45 7 32 PSIG 0120 1 4 8 4 5006772 Revision June 19 2003 39 Servend Installation and Service Manual PRESSURE TEMPERATURE CHART FOR R 404A SHADED NUMBERS LIQUID REGULAR NUMBERS VAPOR INFORMATION COURTESY ALCO CONTROLS 40 5006772 Revision June 19 2003 Servend Installation and Service Manual PRESSURE TEMPERATURE CHART FOR R 404A 5006772 Revision June 19 2003 41 Servend Installation and Service Manual PRESSURE TEMPERATURE CHART FOR R 404A 42 5006772 Revision June 19 2003 Servend Installation and Service Manual G2 SPECIFICATIONS ELECTRICCODE 260 2 AIR 6 3 10 E d HERTZ 1 o 60 60 NUMBEROF WIRES 2 2 2 2 2 2 CONDENSER STYLE AIR WATER AIR WATER AIR WATER MINIMUMCIRCUITAMPS 125 117 63 585 558 518 MAXIMUM FUSE SITE 20 15 10 0 20 15 ELECTRIC CODE E UE 1200 5 25 STYLE AIRE AGUA AIRE AGUA AGUA 1 053 9 9 9 AIR CONDITIONING LOAD 4 605 N A 4605 N A 4 605 N A Ed 5006772 Revision June 19 2003 43 Servend Installation and Service Manual G4 SPECIFICATIONS ELECTRIC CODE BP voLTs 115 115 220 240 220 240 208 230 208 230 ____ HER
38. SYSTEM 9 ICE MACHINE INSTALLATION INSTRUCTIONS 10 STORAGE BIN EMT C 10 ICE DROP ZONE T T 10 CUBER WITHICE DISPENSER v ur es 11 LOCATION OF REMOTE CONDENSER lt lt 11 ASSEMBLY OF THE REMOTE CONDENSER ssessscsesssasetcccccsseccccccdesesccscerscesececcsesstecssesesecese 11 INSTALLATION OF THE REMOTE TUBING 11 PLUMBING LINES AND CONNECTIONS 12 DRAINS 12 ELECTRICAL CONNECTIONS SELF CONTAINED 412 44441212 12 ELECTRICAL CONNECTIONS REMOTE CONDENSER 13 ADJUSTMENT OF THE WATER LEVEL cicccccscccsccccsasesacecesssactassssssssastansaasaacnssasracwaansateteces 13 ADJUSTMENT OF THE WATER CURTAIN 13 STACKING 14 INSTALLATION 14 INSTALLATION CHECK westerns te enn ee 14 START UP PROCEDURE SELF CONTAINED wvcccicccccccnscccccceascssscsscsssssssassscsassnscassessesceeseceens 15 REMOTE 2 2
39. TZ o o 50 50 60 EIN TCI n CIS MAXIMUM FUSE se o f f 9 f COMPRESSOR nP 4 a _ ELECTRIC COEE B D CONDENSER_STYLE AR WATER AIR WATER AR WATER CONDENSER FAN MOTOR _____ NA 038 NA 06 warrs _________ _25 NA 183 NA 183 NA AIR CONDITIONING LOAD 6 002 6 002 6 002 Ben men OUNES 20 15 20 15 20 15 44 5006772 Revision June 19 2003 Servend Installation and Service Manual G5 SPECIFICATIONS ELECTRIC_CODE CONDENSER FAN MOTOR y AIR CONDITIONING LOAD 8290 N A N A aeoo M 5006772 Revision June 19 2003 45 Servend Installation and Service Manual G7 SPECIFICATIONS CONDENSER_ STYLE WATER REMOTE WATER REMOTE MOTOR N ELECTRIC CODE 35 AIR BTUH BTUH OUNCES 6 16 10 26 16 160 46 5006772 Revision June 19 2003 Servend Installation and Service Manual G10 SPECIFICATIONS ELECTRIC CODE VOLTS_ BERTZ CT o 60 50 s 50 __2 2 2 2 R O ee Dom d RLA 10 1 10 1 10 1 toe 1 15 NA NA 14 NA AIR CONDITIONING LOAD 11 187 11 187 RECO pron OUNCES _
40. W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE TEMPERATURE DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 55C 175 172 3 119 98 68 4338C 210 95 3621 177 126 9088 9 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURH TIME MINUTES MINUTES ____ 298 278 5130 177 19 128125 9 49 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 60 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 7 A These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 225 2 25 25 7 23 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG MODEL G 7 A These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST
41. ____ 34 0 160 34 2 160 5006772 Revision June 19 2003 47 Servend Installation and Service Manual G12 SPECIFICATIONS PHASE LT T Tl I FI HERTZ 5 WIRES gt 2 URS 1 96 96 96 759 759 759 ELECTRIC_CODE Dun STYLE AR WATER REMOTE AR WATER REMOTE PAMPS_ 1 0850 NA NA 0850 NA NA wars soQ NA 5000 NA AIR CONDITIONING LOAD 15 639 15 639 aun piu A OUNCES ___65 4 10 65 24 __160 GRAMS 3 680 46 143 60 4536 48 5006772 Revision June 19 2003 Servend Installation and Service Manual KG CONDENSER SPECIFICATIONS ELECTRIC CODE 1 B D A D MAE HERTZ 160 60 50 o 5 ELECTRIC_CODE B D A D CONDENSER_FAN MOTOR 5006772 Revision June 19 2003 49 Servend Installation and Service Manual COMPRESSOR SPECIFICATIONS CODE VOLTS POLYOLESTER TRIP POINT VALUE START VALUE RUN WINDING WINDING START RUN 18 oz 12 9 amps 9 85 0 86 43 52 15 MFD i 15 60 1 MFD 440 v 330 v 18 oz 7 0 AMPS 88 106 12 MFD 370 v 330 v 18 oz 5 2 AMPS 88 106 15 MFD DATO MFD 370 v 330 v ELECTRIC COMPRESSOR COMPRESSOR COMPRESSOR RELAY LRA CODE VOLTS BRAND MODEL INUMBERS GEN ELEC penn NUMBER W
42. acitors a capacitor tester must be used Remove the resistor if any from the terminals Attach the tester to the capacitor If you use an ohm meter to test capacitors you can check only of an open shorted or grounded capacitor The resistance testing of compressor windings must be accomplished without wires or components attached Us ing an ohm meter obtain a reading of the compressor wind ings Place one lead on the common C terminal Place the second lead on the start S and run R terminal in succession Compare your readings with those from the compressor manufacturer 5006772 Revision June 19 2003 Servend Installation and Service Manual To check the compressor for ground use your ohm meter Place one lead on a good compressor case ground The copper suction line tubing works very well for this Place the other lead in sequence on the common start and run terminals If you obtain any reading of a circuit through the case the windings are shorted to ground The compres sor must be replaced If the overload protector on the compressor trips you should check the following items The voltage at the com pressor terminals should be no less than 95 of the ice maker name plate voltage of your particular machine Check the ambient operating temperatures be sure you have not exceeded the ambient limits of 38 C 100 F Check the condenser for high head pressure conditions Tripping can also be caused by defective c
43. ailure You should not rule out electric voltage start or run component failure Check for the proper voltage Low or not voltage will re quire you to trace the electric wiring to determine where the electric failure has occurred Correct any discrep ancy you may find The lowest voltage should be no lower than 9596 of the ice maker name plate voltage of a dual voltage machine A single voltage machine should be no lower than 9096 of the name plate voltage High voltage is 1096 greater than the name plate voltage A defective capacitor or relay may prevent the compres Sor from starting If the compressor attempts to start or hums check the start components The potential relay contacts are normally closed These contacts are opened by the counter electromotive force from the compressor at approximately 80 of the operating speed When the contacts open this removes the start capacitor from the circuit The start and run winding with the run capacitor remain in the circuit If this relay fails to open in during operation you should check the holding coil for continuity The current relay contacts are normally open As the com pressor starts the high current draw produces a magnetic field This magnetic field draws the relay armature in The contacts for the start circuit will then close If the coil on the relay is open the relay will not operate If a capacitor shows any sign of leaking or damage re place it When checking cap
44. apacitors or start relay Compressors used in the R 40A machines use polyol es ter oil POE This oil is very susceptible to moisture con tamination An open compressor or can of oil can become saturated with moisture within 15 minutes Please reduce the open refrigerant system time Current accepted POE oils are Mobil EAL 22 CC package AK ICI RL 184 AWARNING When using cleaning fluids or chemicals rubber gloves and eye protection should be worn CAUTION POE oils are caustic to the skin Always wear gloves and goggles when working with the refrigeration system Any defective compressor returned to SerVend must be stubbed with copper tube and soldered closed 19 Servend Installation and Service Manual COMPRESSOR CONTACTOR The contactor serves as the power supply switch for the compressor circuit Voltage to the coil of the contactor is AWARNING UNPLUG UNIT BEFORE SERVICING OR CLEANING p ELECTRIC SHOCK HAZARD supplied by the control board relay on self contained models Caution On 230 volt models the contactor breaks only one power leg The ice maker is still Remote models are wired through controls outside the control board The coil receives power through the low pressure cut out and therm o disc s CHECKING THE CONTACTOR The top terminals of the contactor should always have line voltage present The lower two terminals must have the same line voltage when the co
45. aporators are in this machine The switch should be placed at the one 1 or two 2 position corre sponding to the number of evaporators in your machine 17 Servend Installation and Service Manual 4 RELAY CIRCUIT BOARD COMPONENTS Just below the 3 DIP switch case is a yellow LED This is the POWER light Whenever power is applied to the machine with the toggle switch to the ICE position this light will be on If the machine is off due to a bin full situ ation this light will still be illuminated If the power light is flashing this is giving you a warning A flashing light indicates that any of the following condi tions may apply High temperature cut out Curtain switch set incorrectly one curtain with two thermistors attached or two curtains with one ther mistor attached Missing ice thickness control Mis wired ice thickness control Shorted ice thickness control thickness control To restart the machine investigate the reason for the flash ing light and subsequent shut down Correct the cause of the shut down Turn the toggle switch to the off position for 5 seconds Turn the toggle switch to the ICE position The machine should restart In the lower right corner of the board are two sets of three spade terminals The curtain Hall switch s attach to these terminals If you are working on a machine with a single evaporator your Hall switch connects to the bottom set of terminals marke
46. ater temperature as close to the condenser discharge as possible Should adjustment of the valve be required there is a stem on the top of the valve Allow the machine to operate for six 6 minutes in the freeze cycle before making any ad justments Turn the stem clockwise to increase the dis charge water temperature increase pressure and coun terclockwise to decrease the discharge water temperature decrease pressure The water regulating valve must close off the condenser water flow completely during the hot gas harvest cycle If the valve fails to close during the harvest mode the con denser will continue to condense the hot gas needed for the harvest cycle This will produe excessively long har vest times Leaking water regulating valves are normally the result of scale build up on the valve diaphragm If there is scale build up the valve should be flushed not replaced To flush the valve open the adjusting stem full open counter clockwise You may also force the valve spring up with a Screw driver Opening and closing the water supply to the valve and condenser will result in the valve being flushed out Should this not correct the problem you may change the valve diaphragm The diaphragm can be changed with out resultant loss of refrigerant Water hammer may cause damage to the water regulating valve also Water hammer will result from condenser inlet and drain lines being reversed Proper installation of water cooled
47. atings are laboratory readings If you are working with a 50 Hz unit cycle time will increase 12 while capacity will decrease approximately 12 ICE CAPACITY CHECK PROCEDURE Of paramount importance in checking the ice produciton of any machine is the collection of accurate data Measure the ambient air temperature 5 cm 2 from the condenser fins if air cooled If not air cooled measure air temperature 5 cm 2 from either the right or left side panel about one half way from the front to the back of the unit The incoming water temperature should be measured in the water stream at the inlet of the float valve Be sure your thermometer does not read the water pan temperature Allow the machine to make one sheet of ice Catch this sheet and weigh it During produciton time the complete cycle Production time includes the freeze and harvest times added together With this information the calculation can be made 1440 number of minutes in a day total cycle time X weight of one sheet of ice X number of evaporators ice produciton ICE THICKNESS CONTROL DIAGNOSIS Before replacing a potential ice thickness control please check the following 1 Are the wire leads to the circuit board secure and tight 2 Is the tip ofthe control mounted to the front of the plas tic extrusion The tip of the thermistor should not be recessed into the thermistor hole 3 Is there a glob of sealant over the tip of the control A very
48. ckseat to allow the refrigerant to flow throughout the system Leak check the remote tubing connections This would in clude both fittings at the ice maker and the condenser Replace the side panels of the ice maker Follow the start up procedure as outlined at the top of this page When power is applied to the remote machine the com pressor may operate for a shorttime This is the normal pump down cycle The unit may do this periodically DOES THE OWNER OPERATOR KNOW The location of the electrical disconnect switch and water shut off valves How to start clean sanitize and shut down the ice machine How the bin full operation works Proper method for cleaning the air cooled condenser and fan blade Use and location of the high pressure reset if equipped How to inspect the distributor tube and water sys tem for mineral deposits How to identify when the water filter needs to be changed Who to contact for service 15 Servend Installation and Service Manual ICE MAKER CLEANING PROCEDURE The use of non approved ice machine cleaners is ex pressly forbidden and will void your warranty The ap proved ice machine cleaners are Calgon Green Nickel Safe Cleaner Lime A Way Ice Machine Cleaner AWARNING When using cleaning fluids or chemicals rubber gloves and eye protection should be worn WARNING When using any cleaning fluids or chemicals always wear rubber gloves
49. compas the outside of the control jacket Continue to push the control into the hole until the control hits the stop at the front of the hole Never make a sharp bend with the control nor allow the wire to loop behind the evaporator This can produce inter nal damage to the control The ice thickness control must touch the front stop on the lower plastic extrusion With your thumb still over the opening wipe your thumb sideways over and off the control By doing this you will allow a very slight silicone seal to remain on the control tip Add a dab of silicone to the wire at the back of the evaporator to prevent water from entering the sensor well Reinstall the water pan and restore the utilities to the machine 11 Wait for 15 minutes before allowing water to run over the evaporator allowing the silicone to dry tack free Check the water level in the water pan and tum the machine to the ICE position Allow the machine to make one batch of ice You man check this bridge thickness Adjust the bridge thick ness if necessary 24 ICE THICKNESS CONTROL ADJUSTMENT Adjustment to the bridge thickness on a new start up must only be done AFTER the machine has made one sheet of ice Make subsequent adjustments after each sheet of ice Adjustment to the bridge thickness is done at the circuit board On the bottom front of the board in the control box is a set of 8 DIP switches To have a thicker bridge turn the next rig
50. cratching Screw the legs into the bin bottom Set the bin on its legs Move the bin to its final location level the bin by screwing the feet either up or down Remove the carton from the ice maker and place the ice maker on the bin Align the machine with the bin back and sides Remove the internal packing from the ice maker Level the ice maker head Remove the water curtain and place a torpedo level on the face of the evaporator With the level held against the lower edge of the metal evaporator level the unit left to right Accomplish this adjustment by the bin legs Place the level in the verti cal position on the face of the evaporator Level the machine from front to back evaporator plumb This is critical to have the EVAPORATOR level and plumb 10 ICE DROP ZONE If this installation of a SerVend ice maker is on a differ ent manufacture bin or other storage device the open ing to allow the ice to fall into that device is as indicated on the following drawings 9438 4254 7 20 500 221000 FRONT OF 5006772 Revision June 19 2003 CUBER WITH ICE DISPENSER Install the dispenser according to the instructions provided Remove the carton from the ice maker and place the ice maker on the dispenser Align the machine with the dispenser front Secure the unit with earthquake brackets if provided Remove the internal packing from the ice maker Level the ice maker head Remove the
51. d CURTAIN ONE If you are working on a dual evaporator machine the left Hall switch connects to the terminals marked CURTAIN ONE The right Hall switch will then connect to the terminals marked CURTAIN TWO Between the sets of curtain terminals is a set of three prongs with a sleeve jumper Be sure this jumper is cov ering the top and middle prongs This is the setting for the Hall switch used on your equipment If the jumper is missing or on the bottom and middle terminals the ma chine will not work or may work in harvest cycle when it should be freezing and freezing when it should be har vesting To the left of the jumper mentioned above is a manual har vest switch By depressing this switch one time the ma chine can go immediately into harvest This will happen if the toggle switch is to the ICE position the curtain is in place and the power light is steady on 18 At the bottom of the circuit board in the center is a bank of 8 DIP switches These switches control the thickness of the ice Above the switch bank is a wedge giving a visual indicator of the direction to move the switches The top of the switch pushed down indicates that switch is energized Turn switches on or off in succession from left to right Do not skip switches in this bank Slightly to the left of the ice thickness DIP switches is a small potentiometer This is a very coarse thickness ad justment Do not move this adjustment more than one
52. d high temperature safety cutout device This will protect the ice maker during the pump down cycle At that time power to the circuit board and ice thickness control is off 5006772 Revision June 19 2003 CHECKING THE THERM O DISC Disconnect the therm o disc leads at the compressor contactor and the low pressure control Check the con trol with an OHM meter for continuity If there is no con tinuity replace the control if its temperature is below 32 C 90 F Should the control be open because of high tempera ture you may temporarily manually hold the compres sor contactor closed This will run the compressor and cool the evaporator inlet line to be certain the therm o disc will re close THERMOSTATIC EXPANSION VALVE The refrigerant metering devise used on SerVend prod ucts is a thermostatic expansion valve This valve auto matically adjusts the flow of refrigerant to the evaporator This flow is in proportion to the amount of heat transferred to the refrigerant by the evaporator CHECKING THE EXPANSION VALVE BEFORE changing any expansion valve you must first check the following items This must be operating cor rectly before proceeding 1 The condenser and the fan blade if air cooled must be clean and operating properly 2 The water supply must be sufficient to the water pan There must be plenty of water to flow over the evapo rator 3 The refrigerant charge of the machine is correct There is no mo
53. e in liquid form through the high side access valve Do not start the ice maker until the flow of refrigerant stops or the proper charge has been introduced to the system If refrigerant flow stops before all of the needed refrigerant has been added you may close off the high side charging hose and introduce vapor only through the low side vlave with the machine in the operation mode Servend Installation and Service Manual CLEANING UP A CONTAMINATION SYSTEM If you experience moisture in the system you must clean up the system before placing the machine into service Clean up would include purging with dry nitrogen and pulling a deep vacuum for an extended length of time while adding heat to the system from an external source If you have experience acid in the refrigeration system you must clean up the system Install the recommended replacement drier on the equipment In the event the acid is severe several drier changes may be required If you install a suction lin drier this can be left in the system for the 24 hour clean up period only Do NOT run the system indefinitely with a suction line drier Always follow the evacuation and purging information contained elsewhere in this manual PANSI VALVE 22 SUCTION LINI n SOLENOID mum DISCHAPGE gt o mm HIGH gt VALVE COFE
54. e statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE DEGREES AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 64 5006772 Revision June 19 2003 Servend Installation and Service Manual MODEL G 10 W These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg 174171 2919 86 58 174171 975 119 60 175172 3 019 10 119 60 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES E 70 50 F 248043 4127 86 80 70 F 90 70 F 249044 4326 10 169 86 125 636 90 90 F 263059 4527 1125 17 92 1 640 28922 4528 125 186 94 1 617 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 65 Servend Installation and Service Manual MODEL G 10 R
55. eplace the coil If the coil is energized but the valve still fails to operate you may have a sticking valve that needs to be replaced A leaking valve can cause excessive freeze times uneven bridge thickness high suction pressures etc A leaking hot gas valve is difficult to troubleshoot Several methods to determine if this valve is leaking in the closed mode are as follows 1 The hand temperature method Place you hand on the oullet of the valve The outlet line of the valve should feel ambient temperature or a little cooler 2 The use ofan electronic sight glass This can be beneficial in the detection of a leaking valve Install the probes on the outlet line of the valve several inches apart If there is a small leak in the valve the instrument should detect hot gas condensing due to the pressure drop and cooler tem peratures of the evaporator section 3 Useofapinch offtool By closing the line between the hot gas valve and the evaporator you will be able to determine if the valve is leaking 21 Servend Installation and Service Manual ICE CAPACITY The ice manufacturing capacity of any maker is affected by many operating conditions These conditions include but are not limited to water and air temperatures electric and ocation of equipment etc We have included in the operating speci fications section typical production capabilities for SerVend ice makers at specific conditions All printed capacity r
56. from the circuit board Do NOT remove the thermistor Attach your ohm meter leads to the thermistor wires Is ohm reading between 10 000 to 15 000 ohms Place machine into freeze mode Allow unit to make 1 8 bridge thick ice 23 Servend Installation and Service Manual ICE THICKNESS CONTROL REPLACEMENT Shut off water and electric supply to the ice maker Remove the float valve and the water pan from the ma chine Remove the side panel from the control box side of the machine Use 1 5 mm 1 16 punch to push the control out of the extrusion Clean the old silcone out of the hole Remove the old control from the machine Thread the new control through the machine from the complressor compartment Push the control tip through the enclosure toward the evaporator When routing the new control wires to the cifcuit board be sure the wires do not touch any hot gas lines Attach the lead wires to the circuit board in the appropriate posi tions There is no polarity in the wires ofthe ice thickness control Using GERTV 108 silicone fill the hole with silicone This Silicone is available from your local SerVend distributor Immediately after filling the hole with silicone place your thumb over the front of the hole for the ice sensing control Push the new control into the hole from behind the evapo rator This will allow the silicone to en
57. h improper inaccu rate or illegible labor forms Damage due to failure of electrical supply water supply or improper ventilation around the product Damages due to fire flooding or freezing Damage and or defects attributed to the use of any non factory accessory or compo nents including but not limited to filters reclaimers remote condensers or any other devices attached to SerVend equipment Labor or part claim for components proven at our facilities not to be defective Repairs or replacement of damaged components Labor claims including diagnostic submitted over the times allowed in our current labor time chart The other of the warranted equipment is responsible for any transportation costs for replacement components SerVend will pay for Replacement parts and designated labor hours to repair defects in material and workmanship during the warranty period Service provided by an authorized SerVend service company Please see your dealer for a copy of the detailed SerVend warranty for your equipment PURCHASED PARTS WARRANTY Following the expiration of SerVend s standard cuber and dispenser warranty replacement purchased from SerVend parts are covered by the parts warranty Any replacement part purchased by the owner of the SerVend equipment shall be warranted for a period of ninety 90 days from date of purchase or proof of installation of said purchased part s Following the expiration of SerVend extended parts warranties
58. ht switch To have a thinner bridge turn the next left switch off It is acceptable to have all of the switches either on or off Follow the indicator wedge above the switch case for thicker or thinner bridge The switch is on if the top of the switch is down If further adjustment is necessary you may adjust the potentiometer Locate this pot left of the 8 DIP switch case Remember this is a coarse adjustment Move this pot no more than one 1 graduation at a time You will then have to adjust the DIP switches for proper thick ness To adjust this potentiometer on the board thinner turn the pot counterclockwise To adjust the board thicker turn the pot clockwise After adjusting the board you must reset the board Turn the selector switch to the OFF position then turn the Switch back to the ICE position SAFETY THERM O DISC The therm o disc is a high temperature safety control The therm o disc is located on the evaporator inlet line for remote cooled machines This component is insu lated to prevent ambient air from effecting operation The safety control is nonadjustable and set to open at 49 1209 F and will close at 35 C 95 F evaporator inlet line temperature This component prevents the cuber from overheating if the product should remain in a hot gas harvest cycle for any reason Wiring of this control is in series with the compressor contactor The therm o disc will provide a secon
59. ice When the ice temperature reaches a specific point as determined by ad justments on the circuit board the control indicates the machine should enter the harvest mode This harvest mode is initiated at any time after the first eight 8 minutes of op eration This delay prevents premature harvest 5006772 Revision June 19 2003 SEQUENCE OF OPERATION During the harvest mode of operation two relays should be energized These relays control the compressor green LED and the hot gas solenoid red LED This mode allows the hot gas to flow directly from the com pressor tot the evaporator This will warm up the evapo rator allowing the sheet of ice to slide off As each falls from the evaporator it will push the curtain away from the evaporator As the curtain moves the target on the curtain will move out of range of the elec tronic sensing Hall switch If the ice holds the curtain target out of the range of the Hall switch the machine will shut down This acts as a bin full indicator When the curtain returns to the closed position the machine will return to the freeze mode As the curtain moves away from the evaporator the machine will remain in the harvest mode for 30 seconds or until the curtain resets against the evaporator whichever is first If the machine remains in the harvest mode the circuit board will re start the unit in freeze at the end of nine 9 minutes Removal of the water curtain s can cause the machine to n
60. is flooding the evaporator you may experience higher than normal suction pressure This pressure may not modulate down SERVEND USES SPECIAL THERMOSTATIC EXPANSION VALVES THE SUPERHEAT SETTINGS ARE MADE SPE CIFICALLY FOR SERVEND DO NOT ATTEMPT TO USEAN OFF THE SHELF VALVE AS A REPLACEMENT THIS WILL VOID ANY WARRANTIES WATER PUMP The SerVend ice maker produces ice with the recirculation of water over the evaporator The water recirculation is accom plished through the use of a water pump The electric motor on the pump is driven by either 115 volts or 220 volts The motor then a magnetic drive which in tum powers the pump impeller assembly All SerVend water pumps are interchangeable with the excep tion of the electric motor One 115 volt and one 220 volt re placement pump will replace any pump in any SerVend ice maker The impeller section ofthe pump can be disassembled for clean ing or repair With the removal of the six front screws the com plete impeller section is exposed DO NOT DISASSEMBLE THIS PUMP EXCEPT ON AWORK BENCH OR TABLE SMALL PARTS CAN BE LOST 25 Servend Installation and Service Manual WATER PUMP After disassembly the impeller section can be placed in ice machine cleaner or simply replaced if necessary When reassembling the pump start with the front hous ing assembly Place the inside portion of the front hous ing up then place the ring case half seal on the fro
61. isture in the refrigerant system To check for moisture seizing an expansion valve gently warm the body of the valve This is done with the machine in the ice mode Apply heat to the body of the valve with a heat You should only have to heat the body to about 2 C 35 F If there is moisture in the system you will experience a rapid change in system suction pressure 4 The hot gas valve s is are not leaking 5 The expansion valve bulb is located in the proper posi tion clean and tight The bulb must be insulated from the ambient temperatures 5006772 Revision June 19 2003 Servend Installation and Service Manual On some 30 wide self contained machines mounting of the expansion valve bulb is in the vertical position This bulb is positioned so the capillary tubing extends from the upper portion of the bulb On all other machines the bulb is in the normal 10 00 to 2 00 O clock position Frost on the suction line leading to the compressor is not an indication of a defective expansion valve With high ambient temperatures long run times coupled with low evaporator temperatures can produce frost If your expansion valve is starving the evaporator you may experience one of more of the following Lower than normal suction pressure for the operat ing conditions Low or non existent ice production Thick ice pattern on the bottom of the evaporator and thin ice on the top If your expansion valve
62. l Attach your ohm meter to the ends of the wires Your meter should be capable of reading 5 000 to 40 000 ohms accu rately At room temperature with no ice on the evaporator your control should read ABOUT 10 000 to 15 000 OHM resistance Place an ice cube on the tip of the control You should obtain reading about 25 000 to 36 000 ohms You may hold in the contactor forthe compressor to freeze the evapo rator rather than hold ice on the tip Do not hold the contactor in for more than two minutes Flood back to the compres sor may occur with damage to the compressor These readings are approximate Do not be concemed if your readings are slightly different If your control responds comparable to the above readings this control is good If your control does not respond re place this ice sensing contorl 5006772 Revision June 19 2003 Servend Installation and Service Manual CHECKING THE THERMISTOR Remove the thermistor wires from the circuit board DO NOT remove the thermistor Attach your ohm meter leads to the thermistor Is ohm reading 32 000 ohms or greater YES DO NOT replace Thermistor is good 5006772 Revision June 19 2003 Is there ice on the evaporator Thermistor is de fective Replace the control NO Is ohm reading 32 000 ohms or greater YES Remove the ther mistor wires
63. lso acts as a harvest termination control As the ice falls off the evaporator the curtain swings out taking the target out of the switch range The ice will then fall into the bin allowing the curtain to immediately fall back against the evaporator At that time the target will return to the Hall Switch range This will put the machine directly from har vest into freeze 5006772 Revision June 19 2003 CHECKING THE HALL SWITCH Turn the toggle switch to the ICE position With the curtain in the closed position against the evaporator check the LED on the circuit board This is the LED at the curtain switch terminals on the circuit board The corresponding curtain position LED should be on With the LED on pull the cur tain away from the evaporator The LED should go off Release the curtain allowing it to fall against the evapora tor The LED should go on If the LED operates in this manner the switch is good If the LED does not operate this way and voltage is correct according to the section checking the circuit board on page IV 14 change the switch HEAD PRESSURE CONTROL VALVE The head pressure control used on SerVend remote ice makers is a modulating control This control maintains the proper head pressure in the remote condenser At outdoor temperatures above 20 C 70 F the refrigerant will flow from the compressor tot the valve The valve then moves the flow to the condenser onto the receiver At outdoor temperatures belo
64. mass Gl JCC 2 220 0011 59 IHRE 200 0171 50 5 CSPOT SSNS VOLT 50 IBLE ARSE 5 a MITILXHECH SERIAL PLAIC FER CORRIC OF ICE CYCLO a COWTACIOR RELA PPEIILPC wa a H AEF 5 3 7 wos 1 T e ox 32 re Jr 3 J 3 39 em SOLEMAN PMII U 4 T K PALL ITFEE 21 17 0 TCO AK HALL cw LH EU PAIS NOTES ILEESE APEP irah WOOCLS WITH HALL EFTECT GUPTAIN BY 217 340 TWO PLBTAIN OPERATION 9 CYCLE SwJ1GH UN Al COOLED Led T Div VIE 5006772 Revision June 19 2003 Servend Installation and Service Manual WIRING DIAGRAMS 3 agag WIRING DIAGRAM szp Liz PLMETE ICC VOLO sm PERLE 200 20 DONGLE ESFEPT 2824 YOLI z
65. n and Service Manual 32 WIRING DIAGRAMS WIRING DIAGRAM T 25 AIRS WATER VOLT 60 WALC S k PUFT 200 VOLT 30 SIMGLE PHASE SERIAL PLATC FOP CORRECT wDLTRGE Lija SHOWN T BEGIMNING OF ICC MAFING CYCLE COMPRI 5508 COKPRC SOP POTENTIAL RELAY CONTAC OF un D AOCP 1 TOGGLE SEE rat UC Tes COC LUMTPUL 57 E um ACC 15 417 CONTACTOR COIL PELLIS PALL SC KOR NOTE SLEEVE POSITIONED bS SHOWN FOP CYCLE SWITCH APC ON NODE LS WITH HALL GUPTAIN SwITEH AIF COOLIO OTE 04 3 OOP 121 42 IDLLLCE SWJICH FROM OWL CUPAN PCEATIUN OF SWITCH 5006772 Revision June 19 2003 Servend Installation and Service Manual WIRING DIAGRAMS WIRING DIAGRAM GS JCE 017 Hz EAPO 200 DL 50 Presse PLAIC POR CDRRICT 3 EOIN CYCLE d L1 3 COMPRESS COM ACTOR POTENTIAL PCLAY COWTACT OP P BL PRE QUA 12
66. n is at this water level mark on the pan This should be checked when the float has just filled the pan and closed off the supply of water to the pan Adjust the float by loosening the screw on the float bracket This will allow you to rise or lower the float assembly 5006772 Revision June 19 2003 Servend Installation and Service Manual EXAMPLE OF WATER LEVEL MARK With the water level set turn only the water pump on This will circulate the water throughout the sys tem Check to assure the float returns the water level to the proper water level mark and shuts off ADJUSTMENT OF THE WATER CURTAIN The water curtain acts as a shield to prevent the water being circulated across the evaporator from going into the ice bin With the water curtain miss ing the float must allow additional make up water to the machine Before making any adjustments be sure the ice maker evaporator is level and plumb The water pan should rest on the plastic holding blocks See drawing on previous page Adjust the water curtain to a maximum clearance of 3 mm 1 8 above the water pan Adjust the curtain as close to the evaporator as possible Adjustments to the curtain are attainable through the plates hold ing the curtain pins Loosen the two screws on each of the curtain plates This will allow the plate to ad just up and down forward and back The water curtain should not touch and yet clear the Hall switch by a maximum of 1 5 mm 1
67. nd Installation and Service Manual ICE MACHINE INSTALLATION INSTRUCTIONS To assure maximum efficiency and performance from your new SerVend equipment we recommend the in stallation and start up be performed by SerVend Con tracted Service Company For best performance select a location away from all heat sources such as ovens direct sunlight etc Avoid placing air cooled models in kitchens whenever possible as grease flour or other airborne particles will collect on the condenser and fan blade This will require increased maintenance and will reduce efficiency Discuss the best location with your SerVend Contracted Service Company representative Always allow 15 cm 6 clearance around the ice maker for air circulation This includes the top back and both sides Restricted air circulation will affect the maintenance free life of your ice maker and its efficiency Your ice maker will perform at optimum efficiency in an approximate 21 C 70 F room with 10 C 50 F water Increased air or water temperatures will decrease per formance Never operate your machine with ambient temperatures below 10 C 50 F or above 38 C 100 If the ice maker is located in an unheated are it must be protected from freezing temperatures or shut down and winterized STORAGE BIN Remove the sides and top from the ice storage bin Lay the flattened carton on the floor Place the bin on its back on the corrugated carton to prevent s
68. nduit connection See wiring connection dia gram on this page 5006772 Revision June 19 2003 ELECTRICAL CONNECTIONS REMOTE CONDENSER Connection of the remote ice making head is accom plished similar to that found in the installation section of this manual Please refer to the self contained installa tion instructions previously established in this manual The power supply for the remote condenser is routed to the condenser separately not through the ice maker head Obtain the proper voltage from the vicinity of the condenser A manual disconnect should be installed in the electric line You may connect electric from the power distribution panel direct to the condenser DO NOT RUN THE POWER WIRES FROM THE ICE MAKER HEAD TO THE REMOTE CONDENSER Route the power supply wires to the condenser junction box Connect the wires to the proper wires Properly ground the condenser The fan motor of a remote condenser is independently controlled This is accomplished through the use of a fan cycle switch inside the condenser The fan will ener gize at approximately 17 5 kg cm 250 PSI and will turn off at 13 kg cm 185 PSI Please follow all local codes when installing any equipment ADJUSTMENT OF THE WATER LEVEL Each water pan has a water level mark molded into it The water mark is the crease in the water pan about one half way up the front of the water pan The proper water level is achieved when the water in the water pa
69. noid valve The fourth bottom relay with green LED controls the operation of the water dump solenoid valve The EV terminals on the circuit board just below the fourth relay are for the ice thickness control This controls the thickness of the ice on all machines On all equipment this works as a high temperature safety On a dual evapo rator machine the control is connected to the left facing the machine evaporator The terminals marked HI TEMP in the lower left corner are used on a dual evaporator machine only The ice thickness control from the right evaporator connects to this terminal This controls the high temperature safety of this evaporator only This has nothing to do with the thickness of the ice Approximately one half way up the right side of the circuit board is a bank of three DIP switches The left and center Switch control how often the water dump valve operates With both of the switches in the down 1 position the dump valve operates at the beginning of each freeze cycle With the left switch in the up 3 position and the center switch down 1 the machine will dump water at the beginning of every 3rd freeze cycle With the left switch down 1 and the center switch up 5 the dump solenoid will operate at the beginning of every 5th freeze cycle Please remember the less the water is dumped the more mineral build up on the evaporators The right switch of this three switch bank tells the board how many ev
70. nt housing assembly This ring will set on the inside portion of the front housing around the appropriate ledge Place the shaft with the D washer in the hole in the inside center of the front housing Slide the impeller assembly on the shaft of the front housing shaft assem bly The impellers must be facing the front housing shaft assembly Then place the Teflon spacer washer on the shaft next to the magnetic drive of the impeller assem bly Assemble the rear housing with the cup portion over the impeller assembly forming a complete housing as sembly Take this assembly and place it into the bal ance of the pump When ordering replacement impeller assemblies for your water pump please specify either a March or Hartell pump assembly depending on the brand pump the assembly is intended for Removal of water pump from a 22 or 48 wide ice maker Removal of water pump from a 30 wide ice maker DISASSEMBLY OF A SERVEND WATER PUMP 26 WATER REGULATING VALVE The water regulating valve is put to use in the condenser water line of a water cooled unit only Its function is to maintain the proper operating head pressure by controlling the amount of water flow through the condenser The valve is adjustable and factory set to maintain a head pressure of 17 6 kg cm 250 PSI Setting the water regulating valve to maintain discharge water temperature eliminates the need to enter the sealed refrigeration system Take the w
71. ntactor is energized If the lower terminals have a different voltage when the contactor is energized replace the contactor To check the contactor you may either ohm check the coil with the coil supply wires removed or check for power to the coil with your meter leads in parallel to the coil EVAPORATOR The ice is made on a nickel coated copper evaporator plate This plate has the refrigerant serpentine coil attached to the back of the plate As the water cascades over the evapo rator check the distribution tube at the top of the evapora tor The water must flow from the tube with the holes in the appropriate direction FAN CYCLE CONTROL This is a high slide pressure control that cycles the condenser fan motor off at approximately 13 kg cm2 180 PSI and will engage at 17 5 kg cm 250 PSI It s purpose is to maintain a minimum head pressure for operation in low ambient con ditions fan cycle control is used on all remote condensers It is also installed in the left fan of a dual evaporator self con tained air cooled machine Also on the G9 air cooled self contained units 20 CHECKING THE FAN CYCLE CONTROL Install a high side gauge to the high side service valve Do not attach the gauge to the receiver valve Operate the sys tem and observe the pressures with the fan cycling If the cycling pressures vary greater than 1096 of the previously mentioned pressures replace the contorl This control is non adj
72. o shorten the line length Evacuate the charge in the tubing Cut the lines and remove the ex cess length Solder the sections together and evacuate the tubing You may add one or two ounces of refriger ant to act as a holding charge Working at one end apply refrigeration oil to the threads of the connectors both male and female Hand thread the fittings onto the machine Using two wrenches tighten the fitting an additional 1 8 turn DO NOT TURN MORE THAN 1 4 TURN Working at the other end apply refrigeration oil to the threads of the connectors both male and female Hand thread the fittings onto the machine Using two wrenches tighten the fitting an additional 1 8 turn DO NOT TURN MORE THAN 1 4 TURN When the fittings are attached to the machines the line seals are broken Removal of the tubing will discharge the operating charge of the machine PLUMBING LINES AND CONNECTIONS All plumbing water and drain connections must conform to local and national codes Please refer to diagrams concerning the locations of all connections To prevent water condensation insulate all water and drain lines It may be necessary to connect the potable water supply to a water treatment system Contact your local SerVend Contracted Service Company for the proper size required DO NOT connect this or any commercial ice maker to a water softener using salt The salt can precipitate out of the water during the freeze cycle The salt water
73. ot operate If the machine is in the freeze mode and the water curtain is taken off when the machine is to enter the harvest mode the machine will stop operation The cuber can be placed in the harvest mode at any time Be sure the water curtain is in place With the toggle switch in the ICE mode gently press the harvest Switch located on the circuit board This will immedi ately enter the machine in the harvest mode If the ma chine is manually placed in the harvest mode the mini mum freeze time for the next cycle only is not appli cable 4 RELAY CIRCUIT BOARD SERIES 008 MICROCHIP SEQUENCE OF OPERATION This programing version is the same as the 007 chip except for the following The water dump cycle is moved to the end of the freeze cycle This chip energizes the valve for 30 seconds This will also allow the water to refill the water pan while a harvest cycle is in progress 5006772 Revision June 19 2003 Servend Installation and Service Manual 4 RELAY CIRCUIT BOARD COMPONENTS The top relay with green LED controls the water pump on all machines This relay also controls the condenser fan motors on an air cooled self contained ice maker The second relay with green LED from the top controls the compressor contactor on self contained machines On a remote cooled machine this contactor controls the pump down solenoid The third relay with red LED from the top controls the operation of the hot gas sole
74. p A PGZ pCa CIPOPT 2e0 240 WOLT 50 Hzi SINGLE PHASEMDDELS PEDE eee NOTE CHECK SERIAL FOR CORRCCT VOL TAGE FAM CYCLO CONTPOL L Le SEE NOTE 1 MITES 1 AND KGS RC KG9 RC USES ONLY DNE 2311 L3 GONG CONDENSER WILL BC WIRED DIRFECILY ELECTRICAL SERVICE THROUGH DISCONNECT ED 5006772 Revision June 19 2003 Servend Installation and Service Manual SPECIFICATIONS DATA PER ARI STANDARDS amp WATER CONSUMPTION Data Per ARI Standards 32 C 90 F Air 21 C 70 F Water Water amp KWH Consumption Per 100 Ibs 45 36 kg Of Ice MODEL CONDENSER WATER POTABLE WATER KWH GALLONS LITERS GALLONS LITERS G2A B N A N A 10 0 36000 G4A B N A N A 25200 N A N A N A NA 14 53 66 23760 N A Letter designating cube size M mini cube full cube J jumbo Cube Data Per ARI Standards 32 C 90 F Air 21 C 70 F Water Water amp KWH Consumption Per 100 Ibs 45 36 kg Of Ice GALLONS Dos 16 66 17 a 77 27720 17 50 155 600 63 22574 Letter designating cube size M mini cube full cube J jumbo Cube Water cooled units based upon 17 5 Kg cm 250 PST head pressure setting OPERATING LIMITS OPERATING AIR TEMPERATURE AIR TEMPERATURE WATER WATER LIMITS MINIMUM TEMPERATURE PRE
75. place the back panel at this time Replace left side panel inserting a gasket between panel and bottom flange as shown in Figure 1 of the instructional diagram On air cooled units place the air condenser baffle on bottom unit as shown in Figure 2 of the instructional dia gram Install stacking kit top panel item 1 as shown in Fig ure 2 of the instructional diagram Before installing the second unit and inserting stacking kit ice chute start the bottom unit per start up proce dures Allow at least four complete cycles of the bottom unit Replace front panel and component box cover Install second unit on top of bottom unit following the instructional diagram Make sure each unit is connected to a separate fused circuit Install the ice chute item 2 in the bottom unit as shown in Figure 3 of the instructional diagram Hook the down tumed flange on top of ice chute into the upturned flange on stacking kit top panel Use two 8 32 x 1 inch SS screws and ESNAnuts to attach the ice chute to the bottom of the bottom unit and to attached the bottom unit to the top unit Start the top unit per start up procedures Allow the top unit to complete at least four cycles 14 After start up procedures have been completed replace any panels removed INSTALLATION CHECK LIST cuber evaporator level and plumb Are electric connections complete s the proper voltage supply provided Check the nameplate
76. rough the condenser will be unobstructed The intake to the con denser must have a minimum clearance of 1 m 3 ft to the closest object The discharge minimum clearance must be 3 m 9 ft The maximum remote tubing line length is 15 m 50 ft 5006772 Revision June 19 2003 Servend Installation and Service Manual DO NOT INSTALL A REMOTE MACHINE WITH LONGER LINES WITHOUT WRITTEN PERMISSION FROM THE FACTORY INSTALLATION WITH LONGER LINES WILL VOID YOUR WARRANTY In using longer line lengths you can starve the com pressor of oil Longer lines can also provide a very high pressure drop in the tubing When placing the remote condenser keep in mind the maximum height and drop from the ice maker head The condenser cannot be placed over 10 m 35 ft above the head The condenser cannot be placed more than 5 m 15 ft below the head NOTE HEIGHT LENGTH SHOULD NOT EXCEED 50 FEET ASSEMBLY OF THE REMOTE CONDENSER Select an area for the condenser that is well ventilated The condenser must be located away from the discharge of other condensers and ventilators Unpack the condenser assembly at the final location Turn the condenser upside down This eases further assembly Assemble the four legs to the base panel Place the leg gussets on the legs and attach the support brackets Use the diagrams included for additional guidance Turn con denser upright and place in proper position Using the mounting holes in the
77. ry AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Kg AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE 550 TIME MINUTES MINUTES ____55 ___ 137124 3020 975 9998 7 068 10 22 2140C _ 157143 3 20 105 101103 72 9 22 26 21C 158 46 3423 112 102005 72 9 22 3201C 206187 3522 156 13 32 9695 8 22 3232C X 207189 3 623 167 132 9694 22 258255 4124 225 15 8160 121120 6 22 Measurments in metric units Pressure KG CM Temperatures Celsius Ice Weight KG 2 2 2 2 2 2 2 2 2 2 2 2 These are average statistics Your particular figures will vary AMBIENT FREEZE CYCLE HARVEST CYCLE ICE TEMPERATURE WEIGHT DEGREES Lb AIR WATER HEAD SUCTION CYCLE HEAD SUCTION CYCLE PRESSURE PRESSURE TIME PRESSURE PRESSURE TIME MINUTES MINUTES 4040F 195 76 4229 98 141 139 9997 10 7050 223 203 4529 105 143146 10 9 80 70F 225207 4832 112 145 49 103 102 9 90 70F 29326 5031 156 186187 136 35 8 90 00F 294269 5 2 167 188 137134 8 lI0 00F 367 334 5934 224 225 227 172 171 6 Measurments in US Standard Units Pressure PSI Temperature Fahrenheit Ice Weight Pounds 5006772 Revision June 19 2003 59 Servend Installation and Service Manual MODEL G 5
78. slight film is OK If the tip of the control has an overabundance of silicone it can act as an insulator to the ice 4 After the cachine seats for 24 hours is the first sheet of ice OK Does each succeeding sheet of ice get thin ner This could be a sealing problem with water in the sensor well 22 CHECK PROCEDURE Clear the evaporator of any ice This can be done with the use of the manual harvest switch on the circuit baord Place the machine in the ice mode Allow the unit to make one sheet of ice i At the end of a normal freeze time manually harvest the Ice Observe the sheet of ice Is the bridge thickenss even from top to bottom Is the bridge thinner at the top of the sheet than at the bottom lf your sheet of ice is thinner at the top than at the bottom your machine is probably suffering from a water loss or a refrigeration problem Please refer to the appropriate sec tions for help lf your ice has an even bridge from top to bottom proceed with the OHM meter check Remove the control wires from the EV terminals on the circuit board Do not remove the control from the evapora tor extrusion In a dual evaporator machine only the left ice thickness control connected to the EV terminals de termines the thickness of the ice If the ice sensing control is open or shorted the power light on the circuit board will flash The machine will not operate replace the contro
79. t an inspection from the delivering carrier File your claim for loss or damage at once Delays in filing will only hinder achieving a satisfactory resolution to your claim SAFETY INSTRUCTIONS Installation and start up of this equipment should be done by a qualified service technician Operation mainte nance and cleaning information in this manual are provided for the user operator of the equipment REFRIGERANT LEAK AND REPLACEMENT POLICY In any instance where there is a partial charge of R 404A refrigerant in a SerVend ice maker or a compressor electrical burn out SerVend requires the following Recover and properly dispose of any remaining refrigerant charge in the machine After all repairs are made to the system replace the refrigerant with a weighed in charge listed on the serial name plate of new virgin refrigerant This policy also applies to any machine having a compressor replacement with an electrical burn out RE USE OF CURRENT REFRIGERANT In any instance where a component in a SerVend ice maker is replaced the following is policy Properly recover the refrigerant charge from the system Replace the component in question Check the system for refrigerant leaks using dry nitrogen Replace the original refrigerant back to the machine This will apply with all component changes EXCEPT compressor electrical burn out In the event of a compressor burn out refer to the refrigerant leak policy above REPLACEMENT OF FILTER DRIER
80. tions on the con tainer Push the purge switch to remove this solution from the machine Wipe all surface areas of the bin and ice contact areas with a solution of 28 ml 1 oz liquid laundry bleach per gallon water You may use a commercial sanitizer mixed according to package directions Turn the toggle switch to the ice position Discard the first batch of ice 4 RELAY CIRCUIT BOARD SERIES 007 MICROCHIP SEQUENCE OF OPERATION Place the toggle switch in the ice making mode The power LED and the LED s by the curtain terminal connections will be illuminated You will also energize 3 ofthe 4 relays on the board These are indicated by the illumination of green LED lights along the side of each rely Activated will be the dump solenoid com pressor contactor water pump and fan motor or water pump and pump down solenoid on remote units The dump solenoid relay will be energized for six 6 seconds at the beginning of the freeze cycle At the end of the dump cycle the water pump and dump valve will stop for eight 8 seconds At the end of this time period the water pump will resume As the ice builds on the evaporator a bridge is built from one cube to the next At the bottom of the evaporator this bridge begins to roll over the lower extrusion As the thickness of the ice builds the temperature of the ice decreases On this lower extrusion is located the SerVend ice thickness control This control senses the temperature ofthe
81. ustable FLOAT VALVE The water level in the water pan is controlled by use of a float valve This valve modulates to allow a sufficient volume of make up water into the pan for production into ice Adjustment of the valve is accomplished by the valve bracket This bracket has two screws Loosen the screws to move the float and bracket up or down to raise or lower the amount of water in the pan Located within the float valve is a flow control washer This washer prevents high water pressure from interfering with the operation of the float valve At pressures below 1 4 Kg 20 PSI to 3 9 Kg cm 55 PSI the flow control washer is inactive The flow washer begins to hold back the water pressure from the float valve from 3 9 55 PSI to 8 4 Kg cm 120 PSI At pressures above 8 4 Kg cm 120 PSI the flow control washer will not control the incoming water pressure you must use a water pressure regulating valve HALL SWITCH The Hall switch operates in conjunction with a magnetic tar get on the side of the water curtain This has two functions on the SerVend machine The Hall switch serves as a bin full control When the bin fills up the curtain is held away from the face of the evaporator and out of the range ofthe Hall switch As ice is removed from the bin the curtain will fall back toward the evaporator This will again put the target within range of the Hall switch and the machine will restart This switch a
82. w 219 C 70 F the refrig erant flow is from the compressor tot the valve The valve then mixes the discharge line and the condenser line The resultant mixture is sent tot he receiver This by pass mode supplements the condenser pressures and is used to maintain proper operating head pressure CHECKING THE HEAD PRESSURE CONTROL Install a gauge at the receiver tank With outdoor tempera tures below 21 C 70 F receiver pressures will be 13 kg cm2 180 PSI to 17 kg cm 240 PSI 3 A head pressure control that stays in by pass may be the result of a system that is short of refrigerant Before re placing the head pressure control check the fan cycling control If it is not cycling add refrigerant in 1 kg 2 Ib increments up to 2 kg 4 Ib Allow the machine several minutes to balance between additions If the addition of refrigerant corrects the valve problems locate and repair a refrigerant leak REPLACEMENT OF AHEAD PRESSURE VALVE Always snap off the stub line at the dome before using a torch to heat the lines for removal When installing the new valve be sure the dome area is covered with ample heat sink before applying heat to the valve stubs 5006772 Revision June 19 2003 Servend Installation and Service Manual HIGH PRESSURE CUT OUT Al SerVend water cooled remote condenser and G2 air products contain a high pressure cut out The function of this switch is to turn the ice maker off in the event of ex

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