Industrial scale ice machines Service Manual EVE
Contents
1. 4 E FIE J HE E PIN sih C TY Pa ZA AA 7 gt NG Y SE pp 3 GATA pe Il LI VA id i 2 N i sii LI LI CO LI gt E yo gt LI ESI KMA A AL A Da dF a i y E Pi 46 k o A A sai iAH e 3URD A TERRA UN BEARD UN EARTH A A BURD ERR EVE200 300 400 e component pos component 3 1 Base ____ 1 27 nsulation 2 Evaporator cylinder 1 28 Internalscrewbase_____ 3 po Uppercover 1 29 Iceoutlethole 5 Rotatingshafe 1 30 Waterdrawer 1 6 Scrapingroller ice breaker_____ 1 31 Upper cover inspection hatch 1 7 scrapingbade 1 32 Waterandsaltreservoir______ 9 Deflector kit drip tray 1 33 Water accumulation reservoir 11 SmallendbushingrotatingShat 1 34 Waterregulationtap 1 12 Scraping roller support 2 35 Water input rotating coupling 1 13 Scraping roller bushing 2 36 Waterfilter 1 14 Scraping roller register screws 2 37 Delivery piping to the distributor 15 R2. A gt 4 4 i 14 7 i Yj lt GG TE 7 I 2060 ha 2060 ha 4100 EVE1000AS 14 Rev 11 05 rd Scotsman ke Systems Industrial ine Service Manual ZE
3. e lt hi H 2060 2365 690 ARES664 6659 D I UD OT LD o e LI d A LO 1139 Le 4600 aii re n LU 10 ON 00 SI QJ QJ OU O e i Z 2060 369 ARES664 665 g O LO ON A 2 i D LO aL 4600 EVE1500AS 15 Rev 11 05 SD Scotsman ice Systems Industrial ine Service manual Et He EVE2400ASR Net ica Inlet Overflow Packing A Model water Inches Dimensions Packing Inches WxDxH dimensions WxDxH EVE650AS 2600 2040 1555 2000 k NN 4400x2340x2 4400x2250x2300 4900x2340x2 4900x2250x2300 4900x2340x2 4900x2250x2300 6800x2340x2 6500 2150 2000 5050 200 EVE2400AS 1990 1680 2505 2400 1030 2250x2100x2 200 Specification and or dimensions may change without prior notification 16 Rev 11 05 Ps Scotsman ice Systems Industrial ine Service Manual VI INSTALLATION a Handling unpacking and disposal of packing Check that the packaging has not been gt damaged during transportation er Proceed carefully with the unpacking and JL o then place the machin
4. 20000 0 Ly A N S S DC y 37 Rev 11 05 gt Scotsman ice Systems Industrial ine Service manual 7 ELECTRICAL CONTROL PANEL wiring diagram screw compressors GENERAL POWER 0 1 when it is in position 1 ON the machine is energized and the crank case heater warms the compressor oil VOLTAGE ON white lamp the machine is energized EMERGENCY PUSH BUTTON STOP push this push button to stop immediately the machine for emergency needs RUN push button START when oil compressor has reached temperature and water supply is connected push this button to start the machine The machine will operate as follow e open solenoid valve e start rotating shaft gear motor and water pump e Start compressor and condenser fans ON CYCLE green lamp the machine is working STOP push button push this button to stop the machine The machine will operate as follow e solenoid valve closes refrigerant supply and starts PUMP DOWN phase vacuum process e when PUMP DOWN phase has ended rotating shaft and water pump still continue working to clear the evaporator of residual ice this function is regulated by a timer with a delay of average 5 minutes Once this time is passed gear motor and water pump stops e The machine at the moment is ready for a new production cycl
5. 2100 EVE400AS 2600 NW 1840 040 E 103 2600 EVE650AS Rev 11 05 13 ed Scotsman ke Systems Industrial ine Service manual LEA SS S i ZILLA ELL LLL ey KI ia si n pal gt EB Z y Now is i 7 A f K ia 7 E 7 7 N Y sl Y Terk asili 7 ERE a 1990 PERI
6. 1 25 0 0 0 0 0 O 0 0 O A NI O x 15 15 15 15 15 pee Ce Gl e TT TT gt 40 10 10 10 PO E O O O 0 107 10 TS lo o o 40 40 40 40 4 i lo 50 50 50 50 50 o 80 80 Voltage limiter 1 Set up Voltage limiter 2 10 10 10 10 10 10 10 10 10 Current limiter shaft 1 o lt il eee Current limiter shaft 2 15 15 Current limiter shaft 3 1 1 1 1 0 Set up Current limiter shaft 4 gt I gt I gt I gt gt gt gt gt I gt I 100A_ 1004 125A 1604 2004 2004 400A 27 Rev 11 05 P Scotsman ice Systems Industrial ine Service Manual VIII CLEANING MAINTENANCE and REPLACEMENT PROCEDURES Maintenance is minimal but should be carried out regularly paying attention to any abnormalities thereby avoiding small malfunctions becoming major break downs Maintenance is as follows 1 check the distance of the scraping roller and scraping blade to wall of the evaporator and check the two bushings adjust replace as necessary 2 cleaning of the filter with compressed air Normally dirty filters lead to a shut down of the machine caused by an intervention from the control system 3 drain the evaporator of oil First stop the system and empty the machine of the refrigerant liquid wait a few hours to allow the oil to warm up and then open the release tap This operation gives excellent res
7. Open the electrical box and disconnect the supply wiring Loosen the fixing screws of the fan condenser Take away the fan kit then remove the blade from the motor At this point replace the faulty motor with the new one following the reverse procedure COMPRESSOR see attached service manual Please follow the manufacturer instructions Safety first For a correct and secure installation use the right tools and protection LIQUID RECEIVER safety pressure valve When the liquid receiver is operating in normal conditions does not need maintenance Do not attempt to open the receiver when under pressure Accessories and modification on the liquid receiver has to be approved by the manufacturer In case of replacement it is necessary to empty it and drop the pressure to atmospheric level Any residual oil must be collected and disposed of by specialised personnel WARNING Safety pressure valves do not need maintenance Cover or seal removal are not permitted this will result in the manufacturers warranty being null and void Safety valve inspections are restricted to authorized companies and conformity to specific standards in force in the country of installation 33 Rev 11 05 DD Scotsman ice Systems Industrial ine Service manual 4 FILTERS oil suction and liquid line The cartridge filters can be easily replaced Close the check valves before and after the filter unscrew the screws fixing the filter s closur
8. Industrial scale ice machines a Service Manual EVE COMPACT Ed 11 2005 Scotsman Ice Systems Industrial line Ce Scotsman IV Technical characteristics VI VII VIII X XI Ice Systems Industrial ine Service Manual EVE Compact Units Safety advice Introduction A working outline a Water system b Ice outlet C Refrigeration system i Direct expansion with thermostatic valve li Direct expansion through flooding with level control Diagram of refrigerant circuit with main components Diagram of refrigerant circuit level control and screw comp d Inlet water Production diagram Installation a Handling unpacking and disposal of packing Positioning levelling and access for maintenance Water inlet connection Ice outlet Electrical connection START UP and ADJUSTMENT First start up and adjustment Switch off and Re starting Re start procedure after supply interruption or Emergency stop Salt addition Salt feeding pump Water Brine tank Scraping roller Gear reducer protection SET UP and WORKING DATA R22 SET UP and WORKING DATA R404a 507 CLEANING MAINTENANCE and REPLACEMENT PROCEDURES a Replacement of gear reducer and motor b Water pump replacement c Replacement of Ice breaker bush and scraper d Replacement of thermostatic valve FTL e Replacement of deflector f Replacement of deflector and drip tray g Replacement of shaft bushes IX CLEA
9. b3 Discoloured thinner ice there is oil in the evaporator cylinder Therefore it is necessary to remove it by using the appropriate release tap see cleaning and maintenance b4 Excessive thickness of ice results in an irregular movement of the scraping roller and the rotating shaft This is caused by too much refrigerant entering the evaporator adjust replace expansion valve or check operation of FTL Another cause is the speed of the rotating shaft check operation c REDUCED PRODUCTION c1 It is mainly caused by a reduction in thermal exchange a dirty FTL or thermostatic valve usually due to the presence of oil in the evaporator Remove the oil as described in cleaning and maintenance c2 Insufficient input of refrigerant liquid 4 Rev 11 05 gt Scotsman ice Systems Industrial ine Service manual d ICE WHICH IS DIFFICULT TO BREAK Check the distance between the scraping roller and scraping blade and adjust as required if the problem persists add some salt to the water see start up and adjustment e LIQUID RETURN TO THE COMPRESSOR The evaporator is being overfed it is necessary to adjust the regulation tap FTL or the thermostatic valve This could also occur when the machine has not been shut down according to the correct procedure 42 Rev 11 05 DD Scotsman ice Systems Industrial ine Service Manual XI EXPLODED VIEWS and PARTS LIST 43 MS
10. blocking the shaft To rectify the problem it is suggested that salt is 21 Rev 11 05 JD Scotsman ke Systems Industrial ine Service manual added manually or with pump system Automatic salt feeder pump MPS 03 07 PRED IP65 Electrical supply 230V 50 60 1 198 242 VAC Do not install directly on inductive load provide electrical contactor The pump should be protected by a fuse 230VAC 630mA 16W The water supply pipe sends the brine solution of water and Sodium Chloride NaCl directly into the water reservoir through the injection valve Suction pipe should be placed in the brine tank together with the level control probe and the water drain Between water tank base and salt feeder pump the difference in level should not be more than 150 cm Operation connections connect transparent suction pipe to suction link bottom valve on pump body taking care to connect the pipe 1 2 tubo mandata 3 interruttore di sicurezza 4 pannello di controllo pra 8 5 corpo pompa 9 6 A 7 tubo scarico aria 8 tubo aspirazione 9 sonda livello 1 0 10 filtro di fondo e 677 MPS PRED valvola iniezione cavo allmentazione before the metal ring and pipe stop then connect the A cone to the end Check the valve O ring and tighten the metal ring by hand Place the suction filter on the water tank bottom Suction pipe has to be short and straight to avoid bendin
11. Pressure switch Condenser 1 Pressure switch Condense 21 NE O oo 5 15 15 15 15 Timer shaft pump water level Timer S T or PW Ct reed Jcoci Abi i Timer flow switch gt po 40 10 40 10 Timer oil level A E EE E EA EE AA Thermostatoil 1 step_ Thermostat oil 1 step oc gt 40 40 40 40 40 Set up Thermostat oil 2 step 50 50 50 50 50 Set up Thermostat oil 3 step 80 8 0 80 80 80 Voltage limiter 1 10 Setup _ Setup Setup vCurentlimitershaft_1 OS Setup _ Setup Set up Current limiter shaft 4 gt I gt I gt I gt I gt I gt 1 gt 1 gt 1 gt 1 26 Rev 10 05 ce Systems Indusirial ine Service Manual SET UP and WORKING DATA EVE 200 EVE 300 EVE 800 EVE 1000 EVE 1300 EVE 1500 EVE 2400 R404a AS AS AS Bitzer Bitzer Bitzer Bitzer Bitzer Bitzer Bitzer J amp Hall Bitzer Working conditions High pressure 16 17 16 17 16 17 16 17 16 17 16 17 16 17 16 17 16 17 Working conditions 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 0 4 0 8 Working conditions 13 15 13 15 13 15 13 15 13 15 Working conditions Electrical consumption KW Working conditions Power installed kVA 16 0 22 0 30 0 51 0 70 0 0 3 3 4 4 ga 32 50 60 50 60 60 Aa ru o e nrn_r_ l e A Oil differential pressure switch 08 08 08 08
12. carry out on the system s components to achieve normal working a LACK OF ICE Ice production will normally only stop whilst the system is operational due a fault associated with either a reduction in refrigerant at the evaporator or excessive discharge temperature pressure This will be indicated by either a low suction pressure or high discharge pressure It is possible however that the cause may be of a lack of water in the system as the electronic controls would have stopped the equipment LAND version A reduction in refrigerant can be caused by a faulty FTL check the electrical supply or a fault on the thermostatic valve that controls the flow of liquid In either case the repair is simple i e replace the faulty component solenoid coil capillary FTL To check if the FTL is faulty connect a tester Ohm resistance meter onto contacts 1 and 3 immerse the FTL in a bowl of water and see if by changing its position in respect to the water level the tester shows a variation in the continuity ON OFF b NON UNIFORM FREEZING There are various possible solutions b1 Vertical lines the water is badly distributed by the distributor blocked holes dirty water filter etc For this repair these components should be unblocked or cleaned b2 Lack of ice in the upper part of the cylinder the flow of refrigerant is insufficient Adjust the regulation tap or the thermostatic valve and if still insufficient add more refrigerant
13. ice to offer many advantages over traditional ice cubes or crushed ice In the chemical and cement industry flake ice is used during production to avoid premature drying out or temperature control The following is an example of sectors that use ice On board installations Fishing Fishing industry Processing Manufacture of fish products Fish markets Distribution of fresh fish Retailers of fish or fish products Supermarkets Delicatessens Meat markets Manufacture of poultry and game products Production of salamis and sausages Oven products and industrial bread making Production of dairy products and cheeses Textile industry and paint production Chemical pharmaceutical companies Building and construction companies in compliance with European Standard EN206 1 2000 Our vast experience since 1973 allows us to offer machines with a high level of reliability vouched for by numerous clients who are satisfied with the machines they have used These machines have been designed to work under stress and offer the following advantages Reliability Long life Reduced running and maintenance costs Other than the advantage of reduced production costs when using ice a dry and sub cooled ice will last longer and therefore provide a longer thermal inertia Being flat and free from sharp corners unlike crushed ice it will not damage the outside of the product with which it comes into contact w
14. refrigerant re check the level of frosting proceeding as above until maximum production is reached If necessary add more refrigerant sight glass with presence of bubbles If you wish to use the ice machine to obtain a daily amount which is lower than its capacity it is advisable not to alter the refrigerant system but to stop the machine when the required amount of ice has been produced timer or manual operation by the operator Only in cases when the reduction has to be referred to the hourly production is it advisable to make alterations to the refrigerant circuit reducing the refrigerant power of the compressor partialisation or variation of a number of turns and at the same time reducing 23 Rev 11 05 P Scotsman ice Systems Industrial ine Service manual the quantity of water which flows over the evaporator surface it is sufficient to close some holes of the water distribution channel The stopping of the production can be done at any time without experiencing problems providing the time is less than 10 15 minutes If however the machine needs to be stopped for over an hour it is necessary to empty the gas contained in the evaporator cylinder by using the pump down facility A problem may occur when the machine is off for a long period and the temperature of the room where the machine is installed drops below 0 C In such a case it will be necessary to empty the water reservoir and all associated piping fro
15. LECTRICAL CONTROL BOARD GROUP OIL FILTER LIQUID LINE FILTER OIL SEPARATOR GROUP THERMOSTATIC AND SOLENOID VALVE SALT FEEDING PUMP SUCTION FILTER EVAPORATOR GROUP 1 2 3 4 5 6 7 8 9 1 1 1 0 1 2 3 4 Ha pa 45 Rev 11 05 Pah Scotsman ice Systems Industrial ine Service manual MANUFACTURING PLANT AND HEAD OFFICE Linea Net Milano Srl 55045 Pietrasanta LU Italy Via 1 maggio 10A Tel 39 0584 793938 Fax 39 0584 791462 Email sales scotsman industrial it Email service scotsman industrial it http www scotsman ice it 46 Rev 11 05
16. NING and MAINTENANCE 1 Condenser oil cooler cleaning and fan replacement Compressor see attached service manual Liquid receiver safety pressure valve Filters oil suction and liquid line Valves solenoid thermostatic check non return Electric control panel wiring diagram reciprocating compressors Topographic electrical diagram reciprocating compressor Electric control panel wiring diagram screw compressors Topographic electrical diagram screw compressor FAULT ANALYSIS Exploded views and Part List oe a a page 2 page 3 page 4 page 5 page 5 page 6 page 7 page 8 page 9 page10 page 11 page 17 page 18 page 18 page 18 page 19 page 20 page 20 page 20 page 21 page 22 page 23 page 24 page 25 page 26 page 27 page 28 page 29 page 29 page 30 page 31 page 31 page 31 page 32 page 33 page 33 page 33 page 34 page 34 page 35 page 36 page 38 page 39 page 41 page 43 Rev 11 05 P Scotsman ice Systems Industrial ine Service manual I Safety advices Thank you for purchasing a Scotsman EVE machine we would like to draw your attention to important safety precautions to be used when operating the equipment The refrigeration cycle operates by compression of vapour with high and low pressure features and controlled refrigerant The plant has to be operated in accordance with the attached use and maintenance instructions Components such as pressure switches and sa
17. Open made of Closed ring in Water sensor level Not provided Not provided Supply for water By gravity from Tu Mogli By gravity from Through shaft distributor upper cover and rotating upper cover and rotating i a coupling Refrigeration Power 100 100 115 115 Temperature 9 Rev 11 05 Scotsman ice Systems Industrial ine Service manual IV Production Diagram Diagramma Produzione Production Diagram 200 i 300 400 650 gt 800 O 1000 1300 500 2400 PP o GH rw a NAN lt 10 15 21 25 30 35 T alim acqua C Water temp C Ice production Ice production Evaporating vandiatin Kg 24h Kg 24h Temperature APor Ing Thick 1 8 2 2mm Max production fresh A Temperature Water temp 22 C Water temp 15 C sea water C amb temp 35 C amb temp 25 C Evezaooas 21 000 22 060 28 10 Rev 11 05 P Scotsman ice Systems Industrial ine Service Manual V TECHNICAL CHARACTERISTICS The machine is intended to be used at room temperature Do not install in refrigerated rooms or in places where the temperature is too low If this is unavoidable provision must be made to protect the electrical parts from possible dampness and to ensure that the water in the reservoir does not freeze The guarantee is no longer valid wh
18. Td Scotsman ice Systems Industrial ine Service Manual DIGITAL VOLTMETER AMMETER measures Voltage Amp current Electrical supply Control Panel Electrical wiring screw compressors 39 Rev 11 05 OOD Scotsman Ice Systems Industrial ine Service manual AT IAZ KM OOO 00002 00000 2 t a jo ajo aja aja o 2 ojo ajo Y A L 40 Rev 11 05 gt Scotsman ice Systems Industrial ine Service Manual X FAULT ANALYSIS Following is a list of the most common faults for each fault the probable cause is indicated and the operations to
19. aceway water distribution ring 1 38 Deliverypipingtothesaltdrawer 16 Vertical water distributor 1 39 Oilreleasetap 12 _17 Water distributor ring support board versions 40 Salinity regulation tap _18 Scraping roller scraping blade door brackets 41 Overflow piping attachment z 19 Gearreducer 43 Electricalmotor______ 1 Rotating shaft nut and lock nut tightening ee NE Solenoid valve Water level probe Salt door tube Shaft Drip tray Water accumulation reservoir hatch Brush deflector m PINININIFP jejejejejeje le 43 Rev 11 05 DD Scotsman ice Systems Industrial ine Service manual Z pf E ul CO 7 S x TON ON LAT 7 A MT Zig gt UP 7 A ANA B LA o i j A o MANNA L o Va c s si E E elica La IS i SE i a a t E FI ISS Sg N de A 4 i DAA AT gt IW Ji adi E FR 23 gt F aa E EVE650 800 1000 1300 1500 2400 Fe component siv re component Ju poo Base 1 insulation 2 Evapor
20. an ice Systems Industril ine Service Manual a REPLACEMENT OF GEAR REDUCER and MOTOR To replace gear reducer proceed as follows disconnect switch off the electrical supply for the general circuit disconnect the electrical cables from the gear reducer remove the nut and locknut from the machine s rotating shaft remove the four screws from the gear reducer cover with an extractor remove the gear reducer from the rotating shaft fit the new gear reducer by reversing the procedure when starting the machine check that the shaft is rotating in the direction indicated by the arrow anti clockwise The oil used in the reducer is long life and it is not expected that it will have to be changed during the life of the reducer in cases of accidental spillage it is standard practice to re use it If this is not possible it is advisable to completely replace it with another similar type of oil Each producer of lubricant has a comparison table and any synthetic oil with 220 320 grade can be used aroan AGIP TELIUM OIL SC320 SHELL TIVELA OIL SC320 KLUBER SYNTHESO D 200 EP FINA GIRAM S320 ESSO GLICOLUBE RANGE 220 b WATER PUMP REPLACEMENT Disconnect switch off electrical supply to pump circuit Disconnect the electrical cable from the connector block disconnect the copper pipe the filter and coupling that enter the water reservoir a remove the pump cover unscrewing the bolts b remove the pump from inside the reservoir Replace t
21. ated red lamp when oil pressure drops under pre set level the machine will stop and the lamp is illuminated DIGITAL VOLTMETER AMMETER measures Voltage Amp current Electrical supply 35 Rev 11 05 SD Scotsman ice Systems Industrial ine Service manual Control Panel Electrical wiring reciprocating compressors MN MM Y AU WY JY MS WV 36 Rev 11 05 DD Scotsman ice Systems Industrial ine Service Manual SON KN EA A a KN ES D amp EN J y OS Y Yv ae AN SIG JM QM4 IMS V p Ple Pose d do gt N lt lt di A el A bd if x i EP j ie A b af Y 9 S 29 8 IR G 910 9 9189 8 j SA NANA NANANG NAIK OOD MZ St Na fue ni d gt A CC FA DANILA BAN K LN gt SASAS 4 A k 4 a PATA A NA N E E D o C102 e olla e O o ala 0 0 ele e
22. ator cylinder 1 28 Internalscrewbase _3 po Uppercover 1 29 lceoutethole 5 RotatingShaft 1 30 Waterdrawer sf 6 Scrapingroller ice breaker______ 1 31 Upper cover inspection hateh 1 _7 scrapingblade 1 32 x waterandsaltreservoir E DE IT e E 11 Small end bushing rotating Shaft 1 f 34 Waterregulatontp 1 12 Scrapingroller support 2 35 Waterinputrotating coupling 1 413 Scrapingrollerbushing_______ 2 36 Waterfilter 1 14 Scraping roller register screws 2 37 Delivery piping to the distributor ___ 15 Raceway water distribution ring 1 38 Delivery piping to the salt drawer E 16 Vertical water distributor 1 39 ___ Gilreleaetp 1 2 _17 Water distributor ring support board versions 40 Salinityregulationtap____ 18 Scraping roller scraping blade door brackets 41 Overflow piping attachment HEN 19 Gearreducer CTC 43 Electricalmotor________ 1 21 Waterpump 1 46 Drippan 1 Ei Rotating shaft nut and lock nut tightening DES lll e Eve M Solenoid valve 1 50 Water level probe EN Salt door tube Dia OOO OO OOO CI 25 Water accumulation reservoir hatch 1 FP PINININIP jejejejejeje 44 Rev 11 05 DD Scotsman ke Systems Industrial ine Service Manual COMPRESSOR GROUP OIL COOLING GROUP AIR WATER COOLING GROUP LIQUID RECEIVER GROUP ECONOMIZER GROUP GAUGES GROUP E
23. ch is partly transparent and firmly attached to the cylinder wall b Water with a high lime content causes a calcareous sediment to collect on the cylinder that also causes the ice to stick In both cases the scraping roller breaks the layer of ice which forms on the wall of the cylinder but a loss in quality may be experienced Our experience has demonsirated that the addition of a small amount of salt sodium chloride eliminates these problems the ice is compact and it breaks up into larger pieces The amount of salt used however so low that it is not possible to taste it in the ice and it will not affect food products The salt can be dosed with automatic measuring devices or by a system that automatically regulates the conductivity of the water average 1500 us at 17 C When using sea water after checking that the machine is suitable for this type of use it will be necessary to select a lower evaporating temperature than that used for fresh water in order to obtain a good quality flake normally between 4 and 8 C lower The salinity of the water used is very important for the correct operation of the machine and often an adjustment made whilst in the harbour will provide different results when out to sea due to different levels of salinity Construction FRESH FRESH SEA SEA Differences WATER WATER WATER WATER LAND ON BOARD LAND ON BOARD A smooth Scraper material plexiglass plexiglass ANA Open made of Closed ring in
24. coil on the inside of the cylinder acting as heat exchanger then with the use of a thermostatic valve is injected into the evaporator where it absorbs heat and evaporates The vapour is recovered using the suction pipe as indicated in the technical diagrams i DIRECT EXPANSION through FLOODING with LEVEL CONTROL The refrigerant liquid flows through the pipe for sub cooling with the use of a solenoid valve and a regulating valve for the fall in pressure It then floods the evaporator s internal chambers where the expansion phase takes place If the machine is not completely flooded the level control is carried out with an lt electronic controller FTL which controls the solenoid valve The variation in pressure between the liquid and suction must have an AP no lower than 12 bar to guarantee an adequate supply of refrigerant 6 Rev 11 05 P Scotsman Ice Systems Industrial ine Service Manual Diagram of the refrigerant circuit with main components SR 77 AA AE i 7 gt A wW 4 D F1 mechanical cartridge filter A 6 1 39 DO mo Am i KANE oa component component Evaporator ice machine Vibration eliminator reciprocating compressor high pressure switch low pressure switch Oil pressure switch Vibration eliminator oil separator Non return valve Air co
25. e STOP CYCLE red lamp the machine is stopped manually by operator push button and blue lamp in case of low water level in the water distributor the machine stops and the blue lamp is illuminated Verify water supply and press the push button RESET the machine restarts ROTATING SHAFT RESET push button and blue lamp in case of gear motor overload the relay measuring the over current stops the drive motor and the rotating shaft illuminating the blue lamp Verify that the ice scraper and the scraper blade are free from ice and or obstacles then proceed to restart by pressing the push button RESET THERMAL PROTECTION red lamp when a fault occurs with compressor condenser fan water pump gear motor this lamp is illuminated push button and red lamp when compressor temperature rises to its pre set limit discharge gas and winding this protection will stop the machine and the lamp is illuminated LUBRICATION ALARM red lamp when oil return is low flow or oil differential pressure switches are activated the machine will stop and red lamp is illuminated red lamp when oil pressure drops below pre set level the machine will stop and the lamp is illuminated SOLENOID VALVE ON green lamp when solenoid valve is energized open the lamp is illuminated DIGITAL OIL THERMOSTAT it is measuring the oil temperature the machine will not run until the minimum oil temperature has been reached 38 Rev 11 05
26. e flange Unscrew the cover of the coupling flange than remove the basket the spring and the plastic cover Remove the screw to unlock the cartridge Take away the cartridges and gaskets Fit the new cartridges and follow the reverse procedure 5 VALVES SOLENOID THERMOSTATIC CHECK NON RETURN Check valves and valves do not need maintenance Do not over tighten the valve shaft When replacing welded valves cover it with a wet rag to avoid damage to the gaskets washers when possible remove these parts before welding Replacement of solenoid valve coil remove the locknut and the fixing screw Remove the wiring from the terminal board after having isolated power supply Install the new coil following the reverse procedure 37 Rev 11 05 wi Scotsman ice Systems Industrial ine Service Manual 6 ELECTRICAL CONTROL PANEL wiring diagram reciprocating compressors GENERAL POWER 0 1 when it is in position 1 ON the machine is energized and the crank case heater warms the compressor oil VOLTAGE ON white lamp the machine is energized EMERGENCY PUSH BUTTON STOP push this push button to stop immediately the machine for emergency needs RUN push button START when oil compressor has reached the temperature and water Supply is connected push this button to start the machine The machine will operate as follow e open solenoid valve e start rotating shaft gear motor and water pump e start compressor and cond
27. e for maintenance repair procedures Ensure that the air cannot re circulate from the ice outlet Water inlet connection The water used for the formation of ice must be connected to the reservoir an overflow pipe must also be connected If the temperature of the water is close to 0 C it is advisable to pre heat to avoid the formation of ice in the pipes and inside the reservoir If the water is not completely pure we advise applying a filter system for the purification DIAGRAM with WATER INLET FILTER AN R regulating tap for distributor water 0 F3 mechanical filter P pump gt F ballvalve ri V water reservoir S water outlet F1 cartridge filters F2 pre filter c Ice outlet The discharge of the ice takes place at the base of the evaporator dimensions of the outlet are indicated in the technical tables It is possible to aim the outlet of ice with a stainless steel conveyor made to measure depending on the specific requirements 18 Rev 11 05 gt Scotsman ice Systems Industrial ine Service Manual When the machine is positioned on a storage bin it is possible to control the filling with the use of mechanical or optical sensors or a timer that allows the machine to be stopped and started on demand For safety reasons an ice level sensing device must be used on the outlet of the evaporator cylinder to avoid ice e
28. e in its final position i To lift the equipment secure the machine DA N equally on all sides and lift using the rings which are fiked on the upper cover A i EVE200 EVE400 or the basement holes HIV EVE650 800 Avoid passing under the gt machine when lifted It is possible to move the macie with a fork lift lifting from the base pay attention to the centre of gravity and the weight of the machine All damage caused to the machine during an M N transportation should be AT Pi reported immediately to the TTT 4 deliverer and noted on the A delivery slip LI JA The crate is made of a TTT LL recyclable material wooden JAN cage polyethylene film ssaa dispose of it via an Ey ecological waste disposal LIT company dealing in the ALA recovery of prime materials and waste disposal 17 Rev 11 05 gt Scotsman ice Systems Industrial ine Service manual a Positioning levelling and access for maintenance b The equipment is factory assembled and ready to be connected to power and water Position the equipment and ensure it is level front to back and left to right Remember to leave adequate space between walls etc and other equipment for maintenance and to ensure adequate air circulation The ice outlet must be accessibl
29. ectrical supply 400 50 3 the measuring relay over current protection is supplied with the machine to protect the gear reducer and shaft The control relay control RM4JA32 measures the current on the power supply to the motor and controls its operation see electrical circuit diagram Ai In order to avoid an excessive formation of ice before the restart the measuring relay has to close down the water inlet and refrigerant inlet The current relay gear motor protection has to be installed as follows A1 A2 electrical supply 24 240V C B1 supply phase drive motor EVE201 301 401 651 801 C B2 supply phase drive motor EVE1001 1301 1501 2401 15 18 supply relay with manual restart for plant control SET UP 1 Current absorbed in normal working conditions increased by 5 2 Hysteresis calibration 15 3 Timer calibration 50 4 Motor function delay calibration to gt 1 sec 25 Rev 11 05 ce Systems Industrial ine Service Manual SET UP and WORKING DATA EVE 200 EVE 300 EVE 800 EVE 1000 EVE 1300 EVE 1500 EVE 2400 AS AS AS AS Bitzer Bitzer Bitzer Bitzer Bitzer Bitzer Bitzer J amp Hall Bitzer 54 0 125 0 __162 0 po pass 3 4 4 ga 32 50 60 50 60 60 PO IESO E E O O O O nn Oil differential pressure switch 0 8 08 08 08 1 25 High pressure switch 0 0 0 0 0 O 0 0 0
30. ed every time the drip tray is removed replaced Dismantling of deflector has to be carried out from the lower part ice chute by removing the rivets and the two parts of the deflector A small drill or flexible drive will assist with the removal of the rivets especially for the small machines EVE201 301 401 Positioning a new deflector has to be carried out by positioning the two parts then fix together with rivets and finally fix on to the base Leave a 5mm space between base and deflector g REPLACEMENT SHAFT BUSHING The lower shaft bush A is positioned on the outside of the shaft support base The disassembly procedure is carried out from below the machine by unscrewing the 4 fixing screws to extract the bush from this lower part use a pipe wrench or similar and turn the bush in an anti clockwise direction Pa 32 Rev 11 05 Palio Scotsman ice Systems Industrial ine Service Manual 1 IX CLEANING and MAINTENANCE CONDENSING UNIT CONDENSER OIL COOLER cleaning and fans replacement Remove manually thick dust presence than proceed with a bristle brush or compressed air to clean the fins completely For water cooling it is necessary to remove lime scale and or other solid parts by de scaling and water pressure Before replacing the fan motor always isolate the electrical supply from the machine Safety first For a correct and secure installation use the right tools and protection
31. en there are signs that the machine has been used in conditions environments outside the following Conditions of use Room temperature Temperature of inlet water Fresh Temperature of inlet water Sea Electrical voltage 10 L Water pressure bar 14 psi 5 bar 70 psi for lower temperatures it is advised to use a pre heating system to obtain a good quality ice it will be necessary to reduce the water temperature to less than 25 C 11 Rev 11 05 AD Scotsman ice Systems Industrial ine Service manual e i E Oe KT 1230 770 EVE200AS EVE300AS 12 Rev 11 05 Service Manual Scotsman ice Systems Industrial ine 7
32. enser fans ON CYCLE green lamp the machine is working STOP push button push this button to stop the machine normally The machine will operate as follow e solenoid valve closes refrigerant supply and starts PUMP DOWN phase vacuum process e when PUMP DOWN phase has ended rotating shaft and water pump still continue working to clear the evaporator of any ice residue this function is regulated by a timer with a delay of average 5 minutes Once this time is passed gear motor and water pump stops e The machine at the moment is ready for a new production cycle STOP CYCLE red lamp the machine is stopped manually by operator push button and blue lamp in case of low water level in the water distributor the machine stops and the blue lamp is illuminated Verify water supply and pressing of the push button RESET the machine restarts ROTATING SHAFT RESET push button and blue lamp in case of gear motor overload the relay measuring the over current stops the drive motor and the rotating shaft illuminating the blue lamp Verify that the ice scraper and the scraper blade are free from ice blocks and or obstacles than proceed to restart pressing the push button RESET THERMAL PROTECTION red lamp should a fault occur with compressor condenser fan water pump gear motor this lamp is illuminated red lamp when compressor temperature rises to its pre set limit this protection will stop the machine and the lamp is illumin
33. ess steel shaft positioned in the centre of the cylinder is turned on its vertical axis by a gear reducer Connected onto the shaft are two V arms onto which the ice breaker is fixed on one side and the scraping roller on the other This collects and cleans the surface of ice The ice breaker turning on its own axis and rotating over the ice formed on the inside detaches it by breaking it see photo 5 Rev 11 05 JD Scotsman ke Systems Industrial ine Service manual A deflector prevents the ice from falling into the water reservoir Depending on the type of application and position of the machine there must be adequate conveyors containers or storage bins to collect the ice The rotation speed determines the thickness of the ice a slower speed corresponds to an increased thickness and sub cooling of the ice It is possible to alter the speed by applying a frequency converter inverter onto the electrical supply of the gear reducer c REFRIGERATION SYSTEM The evaporator cylinder is the main element in the machine In its internal chambers the cold refrigerant circulates and absorbs heat The walls facing the outside are insulated with foamed polyurethane At the base of the cylinder there is a system for the removal of oil should the machine need to be closed down for long periods or for use during maintenance visits DIRECT EXPANSION WITH THERMOSTATIC VALVE The refrigerant liquid is circulated through a
34. evel of oil compressor is normal At start up check the rotating direction of the shaft anti clockwise In case of wrong rotation reverse two of the electrical supply phases Open the water supply valves The machine initially may produce low quality ice and should be adjusted as required One hour after start up check the following parameters e Working pressures high and low e Water freezing level inside evaporator surface if not completely frozen adjust the expansion valve e Quality and ice thickness e Base deflector and ice scraper are clear of any ice build up SWITCH OFF and RE STARTING When the machine is switched off using the STOP button provided in the electrical board The liquid line solenoid valve will close and the equipment will enter a PUMP DOWN phase At the end of this phase the rotating shaft and the water pump continues to operate to clear any ice residue from the evaporator surface a timer defines when the drive motor and the pump will stop The machine will stop at the end of the pre set time and is then ready to re start To start push the START button Only in cases of emergency use the red button EMERGENCY STOP RE START PROCEDURE AFTER SUPPLY INTERUPTION or EMERGENCY STOP In the event of the machine experiencing an unexpected loss of power the machine stopping because the gear reducer is blocked with ice or it was stopped unexpectedly for safety reasons the evaporator will be flooded with refri
35. fety valves should be checked periodically to ensure correct operation Maintenance on the equipment should only be carried out by qualified personnel technical support is always available During design and construction of our equipment we evaluate the potential dangers solve them where possible using normal safety practice and constructional standards but some residual risks remain for example Contact with refrigerant can cause freezing scalds Refrigerant leaks can cause suffocation in closed environments High temperatures are present on high pressure circuits Safety valves can vent refrigerant at high pressure and high temperature o The plant has been designed for maximum ambient temperature of 40 C On the serial number plate of the machine are indicated the pressure and temperature working limits TS and PS If a check valve is installed before the safety valve on the liquid receiver ensure that is always in open position The above is not an exhaustive list risk assessments and evaluation of potential hazards should be carried out before any work is started 2 Rev 11 05 P Scotsman ice Systems Industrial ine Service Manual INTRODUCTION Linea Net Milano Srl manufacture flake ice machines in various production capacities and configurations to suit the numerous market demands The agro food industry bread making meat processing cheese etc and in particular the fishing industry have found flake
36. g that can prevent the pump working correctly The pump body has a manual venting valve To prime the pump proceed as follows Place one side of the transparent pipe onto the valve pipe connector and the other side into the brine tank Turn the handle on the pump body anticlockwise to open the valve Start the pump and turn the flow to 50 the air in the pump body will be pushed by the membrane out through the valve Once the air is removed and the brine flows from the valve close the valve 2 Rev 11 05 1 50 DD Scotsman ice Systems Industrial fine Service Manual To help with the priming if the brine solution is very concentrated remove the air from the valve pipe with a 20 cc syringe after having started the pump and opened the valve The feeder pump is provided with a level alarm When the brine falls below the minimum level a red LED will light and the pump will stop The dosage is constant with the possibility of modifying the flow rate from zero to 100 The front panel handle allows modification of the electronic system It is advisable not to adjust the pump flow from 0 to 10 because this may cause an irregular flow rate The bottom part of the filter should be cleaned once a year but if there are crystals present it is suggested that cleaning should be carried out more frequently WATER BRINE TANK To avoid saturation of brine do not add more than 30 of salt by weight As adjustment of t
37. gerant On the re start of the refrigerant system the presence of liquid in the suction line can seriously damage the compressor especially with the ammonia models To avoid this problem we suggest you proceed as follows Check that the ice breaker is free from ice possibly by rinsing with water Empty the refrigerant out of the cylinder using a Pump down procedure having firstly partially closed the suction valve Re start the machine in normal working mode with all valves returned to their normal position 20 Rev 11 05 Scotsman ice Systems Industrial ine Service Manual If the system initially produces low quality ice it will be necessary to make some adjustments a completely open the downstream tap on the recirculation pump close the tap slowly until there is a constant level of water in the distribution channel without spillage and excessive return of water into the reservoir LAND version and the vertical distributor sprays the cylinder surface from all holes b Salt addition fresh water Low salt dosing ice is very dry and breaks in to small sl the eee becomes noisy and the ice breaks before the scraper arrives at the APRA right position Mechanical stress increases on the shaft with potential intervention of gear motor overload protection device and possible damage to the bushes High salt dosing ice is very soft and not really sub cooled there are areas where the ice did not detach
38. he pump regulates the brine flow rate it is possible to meet the majority of customers requirements in respect of ice hardness and temperature b2 manual dispenser pipe in Plexiglas compressed salt tablets should be inserted and the hole at the bottom of the pipe should be gradually enlarged until the correct dosage is reached this depends on the water hardness NOTE When the machine is stopped for a long period the Plexiglas pipe should be removed to avoid re starting with increased concentration of salt This may lead to a formation of ice that is too soft and could block the ice breaker b3 manual dispenser drawer with double basin add salt to the external basin regulate the flow of water until the desired condition is achieved With sea water machines it is not necessary to use these methods If a variation in the quality of the ice temperature is required it is not necessary to make alterations to the refrigerant system it is enough to close the last holes in the distributor closest to the ice breaker thereby obtaining a greater sub cooling surface However on all machines the opening of the thermostatic valve or damper can be regulated to alter the expansion temperature for a greater or lower sub cooling of the ice If the ice production is too low proceed as follows from the inspection window check the frosting on the evaporator surface if this is not complete open the thermostatic valve to increase the quantity of
39. he pump with a new one in reverse order N es hy dee L la uu CA E PIA Li y I f 29 Rev 11 05 Scotsman ke Systems Industrial ine Service manual c REPLACEMENT of ICE BREAKER BUSH and SCRAPER Stop the scraping roller in a position that enables you to access it from the upper access area Slacken the two socket head screws behind the ice EN breaker support fig 1 MA Slacken the adjusting screw fig 2 Remove the support place in a vice and with a hammer and plastic cylinder apply pressure until the bush is removed Insert the new bush with a wooden cylinder or similar to distribute the mechanical pressure during the forced insertion fig 3 4 Re position the upper support fixing it loosely with the socket head screws Before unscrewing the o ME lower support the shaft should be y anana secured with an eyebolt fig 5 so that it does not fall Repeat the same operation as used for the upper support tighten all screws Check that the roller rotates freely without coming into contact with the evaporator if it is off axis proceed by loosening the adjustment screws and adjust as required see start up and adjustment For the replacement of the ice breaker follow the same procedure Slacken the screws on the upper support remove the roller and the upper and lower supports The lower support is accessible fro
40. hich on defrosting will lead to a deterioration of the merchandise Example of model designation EVE200 AS Fresh water version Land Based Air cooled condenser EVE200 LWS Fresh water version Land Based Water cooled condenser EVE200 WS Fresh water version On Board Sea water cooled condenser Sea water version Land Based Air cooled condenser Sea water version Land Based Sea water cooled condenser Sea water version On Board Sea water cooled condenser EVE200 AS SW EVE200 LW SW EVE201 WS SW 3 Rev 11 05 BD Scotsman ke Systems Industrial ine Service manual III A working outline A fixed vertical evaporator 1 is cooled by the refrigerant fluid evaporating on the inside Water is evenly distributed from above onto the internal surface 2 where it freezes once it comes into contact with the cold wall A helicoidal ice breaker 3 is positioned parallel to the cylinder axis almost in contact with the internal surface and the gear reducer 4 causes the central shaft 5 to turn at a constant speed The ice breaker is connected to the central shaft with a satellite mechanism The ice breaker rotates on the surface of ice it removes it by breaking it into flakes which then fall by gravity A flat vertical blade 6 follows the ice breaker cleaning the surface of possible residue Un frozen water is returned to the reservoir 7 Water pump 8 circulates water around the
41. m the ice outlet Lower support registration screw lower support socket head fixing screws 30 Rev 11 05 Scotsman ke Systems Industrial ine Service Manual d REPLACEMENT OF THERMOSTATIC VALVE FTL Before replacing the part check that there is no refrigerant in the evaporator Proceed with the necessary operations in order to bring the valve FTL to a state of good working order Maintenance has to be done by qualified personnel and complying to the standards of the country where the machine is installed e REPLACEMENT OF DEFLECTOR The lower deflector a is fixed onto the V support arms of the rotating shaft and the scraper with two M8 screws b The disassembly of the deflector should be carried out from the lower part of the ice outlet by unscrewing the two screws This will allow removal of the deflector and fitting of replacement f REPLACEMENT DEFLECTOR and DRIP TRAY The deflector is manufactured in two parts fixed together with rivets a The deflector brush b is placed in contact with the deflector and fixed with M8 screws to the V arm of the rotating shaft 31 Rev 11 05 ke Systems Industrial ine Service manual ot frozen on il The drip tray is placed few millimetres above the deflector to collect water n the cylinder surface It is very important that this component is draining the water toward the external side of the machine water reservoir This position must be re check
42. m the water supply alternatively heat the area where the machine is installed N B After 48 hours of working it is advised that you substitute clean the suction line filter in order to remove any oxidisation from brazing welding or impurities that were present in the systems components Water quality varies from area to area It is recommended that a chemical analysis is carried out to ensure that correct cleaning filtering feeding systems are installed to prolong equipment life SALT DOSAGE gr NaCl in 24h t water 15 C DO O E eve 200201 so aio eve doo zoo eve soowor oo eso EVE 1500 1501 800 1 700 SCRAPING ROLLER It Is advisable to check that the position of the scraping roller corresponds to the original position during assembly lts distance from the wall of the cylinder must be 0 4 mm at room temperature of approximately 20 C The roller must never touch the surface of the evaporator contact will damage the surface The adjustment of this distance is achieved by loosening the bolts that keep the box supports fixed positioned on the upper and lower part of the roller holder arm and by moving the roller until it reaches the required distance After carrying out the adjustment ensure that the roller does not move whilst retightening the fixings 24 Rev 11 05 BD Scotsman ice Systems Industrial ine Service Manual GEAR REDUCER PROTECTION RM4JA32 Gear reducer of the rotating shaft El
43. ntering the machine and damaging the shaft and other rotating elements 1 Electrical connection The electrical connection should be carried out by specialised and qualified personnel Installation must conform to all local standards of the country in question The machine is provided with a main power isolator to cut off the electrical supply Safety first For a correct and secure installation use the right tools and protection For the electrical connections please proceed as follows e Drill the electrical board bottom part e Pass through the cables on the previous hole done applying a gasket to tighten e Connectcables to the terminal board 19 Rev 11 05 P Scotsman ice Systems Industrial ine Service manual VII START UP and ADJUSTMENT First start up and adjustment Once water and electrical connections have been completed the ice machine can be switched on In case of malfunction the electrical controls will protect the machine from damage and the corresponding alarm light s will be illuminated IN COLD ENVIRONMENTS ENSURE EQUIPMENT IS NOT STARTED UNTILL CRANK CASE HEATER HAS WARMED THE OIL SUFFICIENTLY Check that the working suction pressure is as shown in the technical specifications In all systems it is necessary to top up the lubricating oil due to the combination of oil refrigerant in the circuit A few hours after the start up of the system it is advised as a precaution to check that the l
44. oled condenser pressure switch rotalock tap Safety valve Da tui rece a aa sola carriage fiter rar solenoid vale traia gauge Do Thermostate vave ao high pressure teie pie _ Damme Lead sealed tap open Rev 11 05 SD Scotsman ice Systems Industrial ine Service manual Diagram of the refrigerant circuit with main components level control and screw compressor version e iat l ares pos component ros component 6 high pressure switch Air cooled condenser low pressure switch pressure switch Vibration eliminator liquid receiver Oil thermostat Solid cartridge filter oil level indicator dampness indicator high pressure flexible pipe mechanical filter Thermostatic Valve 18 38 Globe valve Lead sealed tap open mechanical cartridge filter mechanical filter 20 Flowmeter 8 Rev 11 05 BD Scotsman ice Systems Industrial ine Service Manual d INLET WATER The structural differences between sea and fresh water versions are minimal 1 Scraping blade is in plexiglass more rigid instead of rubber 2 Surface of the evaporator in contact with the water has a horizontally grooved surface to improve the thermal exchange When using fresh water the ice will vary depending on the hardness of the water i e a Almost pure water such as rain water produces ice whi
45. system bea era lt Rec 223 o R7 7 LL TATE 4 Rev 11 05 BD Scotsman ice Systems Industrial ine Service Manual a WATER SYSTEM At the base of the machine is the water reservoir in which the stainless steel pump is immersed Water is pumped to the distributor from which it falls by gravity there is a filter 2 and shut off valve 1 on the toroidal distributor which is positioned internally and integral with the central shaft Depending upon the application there are two different types of distributor a Peralluman pipe with regular perforations and supply from above land version b Stainless steel ring pipe with regular perforations and supply from the axis of the gear reducer on board version In the LAND version a level sensor 3 allows a check to be carried out on the water flow The upper part of the cylinder is rounded at the end in order to channel the water towards the walls of the cylinder In the reservoir there is a float valve which regulates the flow of water from the external feed circuit in such a way that the level remains constant The ice has to be dry and sub cooled for this the surface of the evaporator cylinder which is immediately in front of the scraper roller is not irrigated by the water distribution apparatus b ICE OUTLET The stainl
46. ults if repeated several times at hourly intervals The accumulation of oil in the evaporator can over time lead to poor machine performance production decrease leave a deposit on the level regulator FTL thermostatic and other devices with consequent malfunctions 4 replacement of the ice breaker shaft bushing advised once a year 5 Cleaning It is advisable to clean all parts that come into contact with water at least once a year internal surfaces water distributor piping pump and filter If the water is extremely impure and very calcareous it may be necessary to carry out cleaning more regularly Use Scotsman CLEANER diluted in warm water 30 35 C in the following quantity 1 part water to 3 parts cleaner Allow only the pump and reducer to work for a minimum of 30 minutes maximum 2 hours depending on amount of contamination Once the cleaning stage has come to an end circulate water only for 15 20 minutes to rinse the machine and remove traces of cleaner 6 Check and unblock obstructed holes in the water distributor 8 Clean the condenser air water cooled twice a year if possible 9 Verify working conditions pressures and electrical consumption each 3 4 months 10 Check oil level compressor 11 Safety pressure valve does not guarantee a double intervention in case the valve has opened it is necessary to replace it 12 For compressor maintenance please refer to manufacturer service manual 28 AD Scotsm
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