Manual NG Dp_in
Contents
1. ALFA GALA DELTA SUPER STAR DP R404a TECHNICAL SERVICE MANUAL ICE CUBE MAKERS SELF CONTAINED MODELS NDP 20 NG DP 30 NG DP 35 NG DP 45 NG DP 60 104320 104336 104346 d gt Jartscher NEW RANGE NG MACHINES NGDP 80 104381 NG DP 110 NGDP 150 104391 NG MDP 150 MODULAR CAREFULLY READ THE INSTRUCTIONS CONTAINED IN THIS MANUAL SINCE THEY PROVIDE IMPORTANT INFORMATION RELATIVE TO SAFETY DURING INSTALLATION USE AND MAINTENANCE THIS APPLIANCE SHOULD BE INSTALLED BY APPROVED TECHNICAL SERVICE PERSONNEL RELEASE November 2008 CODIGO NG DPO1MTEN DOC Rev 21 11 08 CONTENTS Introduction WarthIngs s too cada aa ada daa sss 3 Description Operating 5 Operating principle following the electric 6 Specifications Diagrams of connections and dimensions 9 Consumptions weights packaged dimensions and 10 Technical Lulu ans a rca xc xt xxt xt c t ED 11 Production Figures iess teneri oe eter ree nee 12 Reception of the machine Packaging Housing Specifications a 16 Installation Required conditions for placement of unit Water and 17 Connection to water mains water condensing Connection to drain Electrical connection 18 St2. NGDP60A 288 288 48 535x595x795 595x645x920 EM 172 172 89 715 700 1050 780 780 1070 10 224 224 95 860 700 1050 925 780 1001 105 L mms ds su 2007001050 825 7 0 105 11 MODEL REFRIGER CHARGE ad ss A W fa s A W ae A W W m 60A 60 W rm 80 80 W 1000 w 1000 kaa A 1000 kaa w 1000 ra 150 A 1200 E Lan 150W 1200 HIGH PRESSURE MIN PRESSURE AVERAGE TOTAL INTENST ANPS POWER SECURITY COMPRESSOR 13 8 1350 13 8 1350 13 8 1500 1150 1150 13 8 1500 12 1 Data obtained at room temperature 20 water introduced at 15 water quality 500ppm 2 Maximum consumption obtained at room temperature 43 C according to UNE climate classification Class TROPICALISED NOTE Expansion controlled by capillary except in modulars models where it is controlled by means of an expansion valve PRODUCTION CHARTS KSESESESESKSKSE KSEZESESESESESE 2 DODDOODOOUOE 13 NG 35 Tw T a EXERERERE
3. 1 3 m flexible tube with the two filter joints provided provided NOTE We advise against using faucets with two exits and two keys since they can close the buttock by mistake and so the machine remains without water This may indicate a false failure Water pressure should be between 0 7 and 6 Bars 10 85 psi If water pressure excedes these values installation of appropriate corrective units will be necessary It is important that water tubing does not come close to or in contact with any heat sources or heat generated by unit as this could decrease production 18 Connecting Unit To Drain Drain must be located at least 150mm below machine Drain tube must have an inner diameter of 30mm with a minimum gradient of 3 cm per meter Electrical connection The Unit is provided with a 1 5 m cord and schucko socket If the cord is damaged shoud be replaced by a cord or special assembly supplied by the manufacturer or after sales service t is strongly recommended to leave a minimum space between the rear side and the wall in order to have an easy access to the plug without risks is advisable to install a switch and adequate fuses Nominal voltage and intensity are indicated on rating plate as well as on this manual s technical pages Voltage fluctuations greater than 1096 can cause problems or prevent machine from starting The Line to base of plug must have minimum section of 2 5 Be sure voltag
4. AS WELL AS PROBLEMS DERIVED FROM FAILING TO CARRY THEM OUT ARE NOT COVERED BY THE WARRANTY Service personnel will invoice you for travel expenses time invested and materials required for maintenance and cleaning of unit 23 MAINTENANCE AND CLEANING PROCEDURES WARNING Unit should always be disconnected during maintenance cleaning procedures Water Condenser 1 Disconnect machine 2 Close water faucet 3 Disconnect water entry exit from condenser 4 Prepare a solution of 50 phosphoric acid in distilled water 5 Distribute solution through condenser Solution is more effective at 35 40 WARNING DO NOT USE HYDROCHLORIC ACID Air Condenser 1 Disconnect machine 2 Close water faucet 3 Clean condenser using a vacuum cleaner brush or low pressure air Evaporator Water Tray 1 Switch off the electric panel and place the timer in defrosting position no Remove the top cover 3 Place the overflow pipe Remove the evaporator cover 4 Prepare a solution of 5096 phosphoric acid in distilled water Do not use hydrochlorate acid Pour slowly this solution in the upper part of the evaporator until it overflows in the water tray The mixture is more effective with the water between 35 C and 40 C Let solution stand for 10 minutes p em Remove the overflow pipe and wait until the tray is empty Put again the overflow pipe In machines provided with discharge valve should be activated manua
5. inlet Check and replace valve water cooled machines without pressostatic D D E Faulty water pressostatic valve or E Adjust repair or replace mm with this valve 7 C G Faulty timer or micros G Check and replace if necessary H Production time too long Adjust by reducing time to the cycle cubes have flash outside the thermostat mold 6 Low ice production A Blocked condenser or air access to A condenser Clean condenser improve air circulation by lifting machine from floor and moving away from walls and hot air sources In water cooled machines dirty B Clean condenser check adjust or condenser badly adjusted valve replace pressostat faulty water inlet valve or faulty pressostatic valve C Faulty hot gas valve doesn t close C Replace totaly D Faulty fan or pressostat faulty D Check fan and re adjust pressostat inlet cooling water valve or replace E Refrigerant charge too high or too E Adjust low F Faulty water inlet valve leaks and F Check and replace does not close fully G Inefficient compressor G Replace they stick together and form a too low or faulty plate of ice D Faulty micros on timer or wrongly D Verify connections and or change connected Cycle thermostat adjusted too Adjust thermostat high 9 Ice cubes are not completely A Cycle thermostat adjusted too Adjust th
6. REREJE 45 Tw T a efe e e e e 141412141415 414141411815 NG 60 gt elo f Tele oa 414181414184 CIEERCRCRERER Bcd 33 2 79 55 65 45 55 65 73 81 87 92 15 NG 110 S 5 Pe fof of ve pe re e ve fi Bee NG 150 DDDODOOBOOE pe p m m Dn n ew pe m nr m Dn fom vm DELIVERY amp UNPACKING Upon receipt thoroughly inspect the packing container If there appears to be damage to the container contact the shipper immediately Unpack the unit in presence of the forwarder noting any damage on the delivery note or CMR or in an additional document The packing bears the Green Point on all models since January 1st 1998 according to the European Directives on management of Packaging and Waste Disposal Be sure to include model name and serial number on all claims Serial number is located in the following three places Packing There is a label stick onto the cardboard packing bearing this serial number 1 Machine body On t
7. ROCEDURES WHICH ARE NOT INCLUDED IN WARRANTY AS WELL AS THOSE BREAKDOWNS CAUSED BY NEGLECT OF PROPER MAINTENANCE PROCEDURES 20 ADJUSTMENTS Condenser water valve pressostat This pressostat controls high pressure by opening and closing the condenser water valve Differential is a fixed 1 Bar 14 psi The valve closes at 15 Bar 214 psi which is equivalent to a condensation water exit temperature of 38 C Below this pressure it will be difficult to unstick the cubes during the defrosting cycle Above this pressure compressor life and ice production are both reduced Pressure can be increased by turning the small screw on the pressostat clockwise A full turn is equivalent to about 1 5 Bar Fan pressostat air condensation Pressure Control operates on high pressure by starting and stopping fan Differential is a fixed 1 Bar or 14 psi Cut off pressure must be 15 Bar 214 psi Low pressure values may cause difficulties during harvest cycle Higher pressure values may shorten compressor life and diminish ice production Pressure can be regulated by rotating screw on Pressure Control Valve clockwise to increase pressure One full turn is aquivalent to about 1 5 Bar 21 Safety Pressostat This safety device trips when discharge pressure is high Pressure might exceed the limit when a Air circulation is not sufficient room temperature i too high or condenser is dirty air cooled models b Th
8. arting Preliminary 19 lll JO Suay pa aza a kaa a de teret dede e u M u M E d u u E 20 Adjustments Fan pressostat air 21 Securily eee a c ea 22 Maintenance cleaning instructions procedures Maintenance chalrl 23 Water condenser Air condenser Evaporator 24 Storage bin Housing Pipes and nozzles 25 Water Filter Water leaks control 26 Special advises of use R404A 22 26 Troubleshooting eua 27 INTRODUCTION Thank you for choosing NG DP Ice Cube Maker You have purchased one of the most reliable ice making products on the market today Carefully read the instructions contained in this manual since they provide important information relative to safety during installation use and maintenance WARNINGS This appliance should be installed by approved Technical Service Personnel This plug should be accessible at all times To reduce t
9. compressor electrical panel B Faulty relay C Faulty Klixon 3 All the electrics work but the compressor klixons D Fan has broken D Replace fan E Starter capacitor faulty E Replace condenser adjusted wrongly adjusted or badly adjusted J Non condensable gases in system J Purge system 4 Everything appears to be A Unprimed pump A Check overflow water bin for leaks running correctly but no ice is water entry valve and prime the being made in the pump evaporator B Replace Replace the drier empty the refrigerant vacuum and charge new refrigerant E Water tray is dry E Check overflow pipe and for leaks Inspect draining valve in machines with automatic cleaning system Check the buoy valve mechanism in DP90 and DP140 F Freezing system is faulty dirty F Clean condenser check all the D There is water in the gas circuit D condenser water presostat or system components entrance valve faulty or wrongly water inlet valve refrigerant adjusted insuficient refrigerant charge etc 27 5 Ice cubes form correctly but A Faulty hot gas valve or wrongly A Verify and change if necessary do not unstick connected B Low water pressure B Increase water pressure if possible This can often be done by removing flowmeter on faucet pressostat too low or faulty Faulty condensation water
10. e ice storage bin is full at which point cycle thermostat T1 will disconnect the machine but never during a cycle but at the beginning of the defrosting stage since during the production cycle current will reach the pump via terminals 1 2 of micro G1 The machine will remain disconnected until the level of ice in the bin drops below the thermostat because of ice consumption At this point the bin thermostat T1 changes and the machine will start a new production cycle automatically ESQ ELECTRICO ELEC DIAGRAM SCHEMA ELETTRICO ELEKTRISCHER SCHALTPLAN SCHEMAS ELECTRIQUES PRACTICO PRACTICAL PRAKTISCH PRACTIQUE ING VALIDO DESDE EL 03 06 08 ES 16 1 COMPONENTES B Motor bomba F Presostato ventil solo aire G Motor programador G1 Circuito segurid programador G2 Circuito programador Presostato seguridad Presostato condens solo agua Electroval condens solo agua Electroval de agua Electroval gas caliente Motor ventilador Compresor Termostato almacen Termostato ciclo Condensador filtro Resistencia 20W lg Interruptor general I Interruptor de limpieza para cond agua COMPONENTS B Motor pump F Fan pressostat air G timer motor G1 Circuit safety timer G2 Circuit timer H Safety pressostat Condens pressostat water Condens electrov water Water electrovalve Hot gas electrovalve Fan motor Compressor Stock thermostat Cycle thermostat Fil
11. e indicated on rating plate corresponds to that of mains supply IMPORTANT Supply socket must be properly earthed Be sure to check standard for country were appliance is going to be installed OPERATION Preliminary Check a Is machine levelled b Are voltage and frequency of mains supply the same as indicated on rating plate C Is drainage system functioning Is air circulation and room temperature adequate cooled models TEMPERATURE ROOM WATER MAXIMUM 43 35 MINIMUM 5 C 5 a Is water pressure adequate MINIMUM 0 7 MAXIMUM 6 Bar NOTE To install a pressure reducer If water inlet pressure is more than 6 bar ATTENTION Check that voltage and mains frequency are the same as in the rating plate STARTING UP Having followed the installation instructions ventilation temperature room conditions water quality etc proceed as follows 1 2 Open water faucet Check for leaks Plug machine into electricity mains supply Ensure that there are no strange vibrations or scraping sounds Switch the machine the switch is the front of the machine Check that the water curtain moves freely 6 Verify that the nozzles send water to the evaporator in the correct direction uniform fans 7 After 10 minutes check that the water bin has no leaks on the maximum level overflow ATTENTION ADVISE THE FINAL USER ON P
12. ere is not enough water in the system temperature is too high in water cooled models HIGH PRESSURE REGULATION fixed 3030 22 Bar from model 110 part 2683 27 21 Bar 380 296 psi 22 MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT Maintenance and cleaning procedures as well as problems derived from failing to carry them out are not covered by the warranty Proper maintenance is essential to obtain favourable ice quality and optimum functioning of unit Frequency depends on water quality and characteristics of room where unit is installed IMPORTANT Maintenance cleaning procedures should take place at least once every six months If concentration of air pollutants is high complete procedures on a monthly basis MAINTENANCE TABLE PROCEDURE MONTHLY QUARTERLY BIANNUAL ANNUAL BIENNIAL DURANTION Water condenser cleaning 212 90minutes Inyectors cleaning 30minutes Fabrication head filter cleaning 30minutes Water circuit cleaning 45minutes Sanitary cleaning 30minutes Water filter TOSS TM TIAS 30 minutes cleaning replacement la Unit cleaning 0000 Depending on room characteristics Depending on water quality amp amp amp CARRIED OUT BY OWNER ESSENTIAL MAINTENANCE AND CLEANING PROCEDURES
13. ermostat finished low B Ice cubes are too large A B Low refrigerant charge B Add refrigerant until there is frost formation 5 cm from the compressor at the end of the cycle 10 Ice cubes are empty rough A Insufficient water in water pan edges and very white unprimed pump C The curtain strips does not fully C Adjust the curtain strips or clean close and lose water the axle it may has calcareous impurities that avoid a smooth turn of the strips 11 Machine doesn t stop even Faulty bin thermostat or wrongly A Adjust and or replace when bin is full adjusted 12 Ice cubes melt in bin A Obstruction in drains inside the Unblock machine or in premises 28
14. he back of the machine 1 Rating plate and serial number Located at the back of the machine 1 Water cooled machines check that the drainage hose at the back of the machine is in good condition WARNING DO NOT LEAVE PACKING MATERIALS PLASTIC BAGS CARDBOARD BOXES ETC IN REACH OF CHILDREN INSTALLATION Required conditions for placement of unit IMPORTANT The NG machines are intended to work at room temperature between 5 C and 43 C and with water temperature between 5 C and 35 C Difficulties during harvest cycle can appear below these minimum temperatures Above the maximum temperatures the life of the compressor becomes shorter and the production decreases considerably IMPORTANT The new box type frame in NG models allows a better ventilation in the air cooled machines due to the fact that the condensers are placed in oblique position in the front part of the machine The machines will work properly even if they are located in places with little ventilation at the rear and lateral sides The air is expelled by the front grill Bear in mind the previous remarks if the premises where the machine is located is very dusty or smoky The floor on which the machine will be place should be solid and as leveled as possible Water and drainage Water quality influences on ice hardness flavour and quality as well as condenser life Keep in mind the following points Connecting Unit To Water Source Use
15. he risk of electrical shock ALWAYS disconnect the machine BEFORE cleaning or maintaining the equipment Do not attempt to install service or modify this machine Improper use by other than specially trained technicians is extremely dangerous and may result in a fire or electric shock This product has not been designed for any uses other than producing ice cubes with drinking water It is extremelly dangerous to modify or try to modify this appliance Besides it would automatically cancel the warranty totally This appliance is not intended for use including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Children should be supervised to ensure that they do not play with the appliance This machine should not be placed outdoors or exposed to rain Connect to drinking water mains Connect only with the powerd supply cord supplied with the machine This appliance is not intended to be connected to a fix canalization Please follow the instructions given by the manufacturer in order to guarantee the efficiency of this machine and a proper operation THE CLEANING AND MAINTENANCE should be carried out by trained personnel in most of the cases IMPORTANT Do not attempt to service this machine yourself Improper use by other than specially
16. lly l Refill the water tray to the maximum level with the same solution Connect the machine close faucet and wait 20 minutes 8 Open faucet put the timer forward up to the harvest cycle and once the ice has fallen disconnect the machine and put the timer in defrosting position WARNING Discard ice produced during cleaning procedure 24 NOW STARS THE SANITARY CLEANING 9 Connect the machine once it has finished entering water remove the evaporator cover and pour lye one glass Wait for 20 minutes 10 Put the timer foward up to defrosting position Once the ice has fallen THROW AWAY THIS ICE and let the machine produce another complete cycle IMPORTANT Discard ice produced during this procedure 11 Clean and assemble all the components Verify that the grill is cleaned and that cubes slide properly Check that any strip gets blocked in the curtain Check and or change the water inlet filters 12 Check the adjustments of the cycle thermostat cubes more or less filled and that at the end of the cycle the frost is closed to the compressor 13 CHECK THAT THE NOZZLES ARE PROPERLY PLACED THAT THE FORMED WATER FANS ARE UNIFORM AND ALL EQUAL If necessary disassemble clean and put again in the right position Cleaning the ice bin 1 2 3 Unplug the machine turn off water supply and empty storage bin of ice Wipe with a kitchen cloth soaked in lye and detergent x If white lime stai
17. ns do not vanish rub with some lemon or vinegar wait for a few minutes and wipe with the cloth again Rinse with plenty of water dry and run the machine Cleaning the outside of the machine Follow the same procedure as for the ice bin Spray nozzles and connecting pipes 1 Remove the curtain it can be cleaned with vinegar or phosphoric acid rinse clean with lye rinse B Remove the metal grill and clean likewise PULL UPWARDS THE CONNECTING PIPE IT HAS BEEN ASSEMBLED BY PRESSING IT INTO PLACE Disassemble the nozzles and the connecting tube covers and clean them Disassemble and clean the main filter of the production unit IT IS ASSEMBLED BY PRESSING IT INTO PLACE 25 6 Assemble the filter nozzles and connecting tube ATTENTION IT IS ESSENTIAL THAT SPRAY NOZZLES ARE COMPLETELY PERPENDICULAR TO THE CONNECTING TUBES OTHERWISE THE CUBES AT THE ENDS MAY NOT RECEIVE WATER 7 Place the grill over the nozzles with the back slots secure 8 Install the curtain ensuring that all of the strips can move freely 9 Run the machine but DISCARD THE FIRST SET OF ICE CUBES Cleaning the water inlet filters These round wire gasket filters placed on either end of the water hose to mains often become blocked in the first few days of use Especially When The Plumbing Installation Is New Clean them under a jet of water Checking for water leaks This must be done whenever maintenance is carried
18. out on the machine check all water connexions braces tubes and hoses in order to eliminate leaks and prevent breakages and flooding SPECIAL ADVICE CONCERNING R 404 REFRIGERANT R 404 is a mixture of 3 liquid phase gases On evaporating the 3 component gases separate fS Always use the liquid phase valve at the end of condenser or accumulator for refills and purges When replacing a compressor wash inside of circuit with a suitable solvent pump dry with nitrogen REPLACE THE DRIER WITH ONE SUITABLE FOR R 404 which must also have ANTI ACID properties fS If you need to add oil use one which is specific for 404 POE If you are in doubt contact the machine manufacturer Ifthere is a leak anywhere in the circuit where 404 in the GAS phase and a refill of over 1096 is required then ALL THE GAS IN THE CIRCUIT MUST BE PURGED AND THEN REFILL AS DESCRIBED PREVIOUSLY LIQUID PHASE VALVE 26 TROUBLESHOOTING PROBLEM POSSIBLE CAUSES SOLUTION 1 None of the electrics work A The machine is not plugged in A Plug the machine B The line fuse has blown B Replace fuse C The current line is wrongly C Check connections connected in the junction box D Check adjust or change D The cut off micro switch is faulty or wrongly adjusted E Safety pressostat faulty 2 All the electrics work except A Check switch X installed in A Select position 1
19. temperature slowly descends until it reaches a point where the cycle thermostat is connected and starts the timer Once this time has elapsed the defrosting stage 3 4 minutes begins The pump is off and the hot gas and water valves are open Some water is sent to the top of the evaporator to help the cubes unstick Once the defrosting stage is over the cycle begins again and so it continues until the bin is full of ice and contact between the bin thermostat situated at the top of the bin and the ice will stop the machine The bin thermostat will never stop the machine in mid cycle OPERATING PRINCIPLE FOLLOWING THE ELECTRIC DIAGRAM TIMER ON DEFROST MICROSWITCHES DEPRESSED The model NG has two switches 1 In the frontal side of the machine with led This turns the machine on or off when we press it 274 The second switch is located in the electrical panel This one stops the condensing unit but keeps the hydraulic part in operation and allows to do the cleaning of the machine except in NDP20 model Current reaches the machine via the line connecting the blue 1 and brown 2 terminals The brown wire connects the compressor and timer motor The blue wire connects bin thermostat T1 which closes the circuit with 2 A different blue wire goes to 2 on terminal G1 which at this moment is connecting 1 and 4 A red wire connects bin thermostat T1 and micros G1 and G2 which close the circuit with 4 and provide current via G1
20. ter condenser Resistance lg Switch on off Il Cleaning switch for water cond BESTANDTEILE Motorpumpe Ventilatorpresostat nur Luft Motorprogrammierer G1 Sicherheitsstromkreis des Program Stromkreis des Program Sicherheitspresostat Kondensatorpresostat nur Wasser Elektrov des Kondens nur Wasser Elektrov f r das Wasser Elektrov f r warmes Gas Motorventilator Kompressor Lagerthermostat Zyklusthermostat Kondensatorfilter Widerstand lg Schalter An Aus Reinigungsschalter F r Wasser gek hlt rddozovuxc Q N TEORICO THEORATICAL THEORETISCH THEORIQUE FUNZIONALE COMPONENTI B Motore pompa acqua F Pressostato ventola aria G Motore timer G1 Sicurezza timer G2 Timer Pressostato sicurezza Pressostato sicurezza acqua Elettroval condensatore acqua Elettroval acqua Elettroval gas caldo Motoventilatore Compressore Termostato contenitore Termostato ciclo Condensatore radio disturbi Resistenza lg Interruttore generale Commutatore di pulizia per cond acqua COMPOSANTS B Moteur pompe F Presostat ventilation air G Moteur programmeur G1 Programmeur securit circuit G2 Circuit programmeur Presostat securit Presostat condensation eau Electrov condensation eau Electrov eau Electrov gaz chaud Moteur ventilateur Compresseur Thermostat stock Thermostat cycle Condensateur filtre Resistance lg In
21. terrupteur general I Interrupteur nettoyage pour cond eau rddozovuxcr rJ4A4om N ESQ ELECTRICO ELEC DIAGRAM SCHEMA ELETTRICO ADP z O ELEKTRISCHER SCHALTPLAN SCHEMAS ELECTRIQUES PRACTICO PRACTICAL PRAKTISCH PRACTIQUE TEORICO THEORATICAL THEORETISCH THEORIQUE FUNZIONALE VALIDO DESDE EL 13 05 08 ES NG20 PROGRAMADOR SPECIFICATIONS Models NDP 20 o o Oo o o E o a amp m gt o n D D SSS000000 LIDDRILILILILID toma electrica NG DP 30 150 10 NG MDP 150 e ofl 1 O00 00 8 4 S H BBBBBBBBBEBBEBBEBBBBBBEBHBEB BI MODEL CONSUMP CONSUMP CONSUMP NET DIMENSIONS DIMENSIONS GROSS WATER TOTAL COND WATER WATER L HOUR 1 PROD L HOUR 1 L HOUR 1 KG 51 57 36 350 474 592 420x540x725 95 NDP20W 18 51 231 36 50 474 592 420x540x725 35 1 4 3 405x560x770 485x610x790 45 5 50 WEIGHT MACHINE PACKAGING WEIGHT py p 14 4 42 465x595x795 525x645x920 pm Iassw 2 4 34 42 465 595 795 525x645x920 p NGDP45A 188 188 45 465 595 795 525x645x920 465x595x795 5290619920 s8
22. to the timer G At this point the following are connected v COMPRESSOR S v WATER INLET VALVE P v HOTGAS VALVE Q v TIMER MOTOR G Since the motor of the timer G is working during 1 3 minutes the roler of micro of the second water inlet coil cleaning valve drive is depressed until the pins release the micro closing this valve After 2 to 4 minutes micros G1 and G2 will open and close circuits 1 2 Via terminal 2 on micro G2 current reaches the pump Circuit 4 on micro G2 which provides current to the hot gas valve Q and water inlet valve P will be interrupted Since the thermostat is between 1 and 3 the timer will receive no current The compressor continues switched on Air cooled machines have a fan R which is controlled by the pressostat F In water cooled models without pressostatic valve pressostat J opens and closes the condenser electrovalve K Evaporator temperature decreases until the cycle thermostat T2 set point is reached at this temperature circuit 1 2 will be closed and timer motor G will switch on Once the cycle is over the pins on the timer wheels will force the micros to change circuits stopping the pump and opening the hot gas valve and water valve The combined effect of hot gas and water sprayed on the top of the evaporator will release the ice cubes and change the position of the cycle thermostat T2 The ice production and defrosting cycle will continue until th
23. trained technicians is extremely dangerous and may cause severe damage to the unit case of breakdown contact an authorised distributor We strongly recommend using only original replacement parts Waste and other material should be disposed in accordance to local regulations and procedures for waste disposal CLEANING AND MAINTENANCE OPERATIONS ARE NOT COVERED BY THE WARRANTY AND WILL BE INVOICED BY THE INSTALLER DESCRIPTION Main features Stainless steel body AISI 304 and chapa galvanizada Anti blocking spray nozzles Pump without seals High pressure safety pressostats even in air cooled machine Large condensers work well at high ambient temperatures and reduce cooling water consumption in water cooled machines TRANSPARENT CUBES with most of the water mains ALFA CUBE GALA CUBE DELTA CUBE SUPER STAR E OPERATING PRINCIPLE WHEN SWITCHING ON THE MACHINE FOR THE FIRST TIME THE MACHINE SHOULD BE PLACED ON THE DEFROSTING STAGE To do so turn the wheels on the timer until the microswitches are depressed At this moment the compressor is working the water inlet valve and hot gas inlet valve are both open The water bin fills with water any excess is lost via the maximum level overflow After a period of time controlled by the timer the hot gas valve and water inlet valve are closed The pump then sends water to the evaporator where the ices cubes are gradually formed The evaporation
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