Assembly and operating instructions - Water chillers -
Contents
1. 8 1 8 2 8 3 8 3 1 8 3 2 BE NOTES M E E E E EEE 2 SOVICO T DUE atte tas teenies 3 Fittingand assembly uus sostegno MEER ond xb cx dd suas 4 Water Connection iria Gepcus Re rare Gade nR CEN EORR EE 5 Electricsupply odardon sisse dx ea ONDE ERE UE DM UO OEU GU us 7 FEL IGEE SUING Ol ANI scsiacsiatisectstncnassadss des cosesaianahataasenatisne srsrsrrrrsrsesrerens 7 vir arenis io dT 9 COT POSIOMMAT Gl S MEISTE E o 10 M alfunction overview of CORREX external current anode 12 M alfuncton overview of pumps 12 M alfunction overview of plant nn Alternaungcurrentplants 230V uiuis rdi en konnte 13 Rotary currentplants 400V scs aia de BG IRE ec 14 EE ALEE AT IC naso abusiepa omoia tions ences rad RU nd ND 15 M alntenanceor relief ValVGsueesrisveneneba usse Green 15 M aintenanceof pressurereducer sse een 16 COSI OW Rm 16 R amp Star UN e TERN 17 Listof spar epar tSiria a R 18 Overview Of Spareparts seen eene 20 Spare pants and order numbers ccecc cxx verrai e once Rut qaaa 21 RESCH IDTIONIO IAIN e E OO E D 22 Technical data pe 22 Certificate mt e RN 24 General data concerningrefrigerating machine 26 1 Safety notes Please observe the following for your personal safety as well as for maintenance of your warranty rights BI Repairs exceeding the extent of maintenance work as prescribed by this technical documentation2. b Assembly and operating instructions Water chillers Spare Parts List Edition 0105 Preface With the water chiller you have acquired a DK quality product W ater chillers by DK are manufactured according to the appropriate standards and recommendations Each plant is carefully inspected and submitted to a test run which allows us to supply you with a reliable unit A eng ano trouble free service life requires an expert installation and starting of the plant For your own benefit the following assembly notes should be exactly observed The documentation in your hand corresponds to the state of technology at the date of release The manufacturer reserves the right to perform technical alterations according to the further development of the product W e wish you a successful application of the DK Water Chiller DK K alteanlagenG mbH 48282 Emsdetten In accordance with EC machine directive 98 37 EC article 4 paragraph 2 appendix I B we herewith declare that DK W ater Chiller systems described above are designed to cool down drinking Water and service water in the assembly of a machine in combination with other components Commissioning the same is prohibited until is has been determined that the machine into which DK machine components are to be installed complies with the stipulations of the EC directive DK KalteanlagenG mbH Bernd Kappenberg MD Tableof contents S4 E Bn ow DE qug
3. UP20 UP20 U P20 pump 30NK 30NK 30NK 30NK E valve TIS TIS TIS ITIS nozzle 0 1 1 2 Dryer DN IDN IDN JDN 032s 032s 032s 053s Viewing SGI SGI SGI SGI glass 6s 6s 6s 10s Electto EVR EVR EVR EVR valve 2L 2L 2L 6L Pressure 017 O17 O17 017 switch 6758 6758 6758 6758 Tank 90L 90L 90L 90L Covering 90 1 190 2 90 3 90 4 cap Weight 120 135 135 140 kg 19 12 1 Overview of spare parts list 20 2 3 SMXXSSANAAANANAAANANANANANANANANAAANANANASANAN pic 8 KW B 90 below mentioned parts are fitted under the cover DB 10 4 pic 9 KWB 180 950 L 12 2 Spare parts list with order numbers Pos CO Ui BWN HE Article servicereservoir condenser charge pump shut off valve thermo regulator Correx anode titanium rod 4 connector potenti ostat not for KWB 60 plants thermometer draining cock not for K W B 60 plants PUR insulation not for K W B 60 plants frost protectionthermo regulator quick action ventilating valve manual ventilating valve flangegasket expansion valve valve fitted nozzle electrovalve cooling aggregate HP switch LP switch switch box not for 230 V plants and KW B 60 safety relief valve viewing glass dryer water safeguard armature 3 4 water safeguard armature 1 circulating pump U P 20 15NK with
4. circulationpump red control lamp set thermo regulator higher running BM l E air in plant venttank once again above manual ventilating valve while disconnected pump operates in wrong sense of rotation change sense of rotation Pressure switch electro valve has activated via LP switch have it checked by dis connects plant refrigerant specialists increased condensation pressure due to choked condenser clean finned grid at the cooling aggregate increased condensation pressure due to ambient temperature above 36 C slower ambient temperature evaporating pressure too low caused by too little refrigerant bubbles in the viewing glass have it checked by refrigerant specialists circulation pump does not deliver water via evaporator havecirculation pump checked insufficientambienttemperature increase ambienttemperature Creation of vapour proof insulation damaged overhaul insulation condensation on pipes or connectors 9 Maintenance DK senamelled W ater Chillers are standard equipped with a CORREX external current anode Thisform of corrosion pretection is maintenance free Attention is to be paid to the green control lamp which should be lit W hen the red light flashes please consult paragraph 8 1 Causes of malfunction The operation of water relief valve isto be verified at regular intervals s paragraph 9 1 The air cooled finned condenser refrigerant machine guides
5. date atthe site of manufacture Testing resulted in no objections F unctional testing of the safety equipment B eforeinitial operation of the plant thefollowing safety equipment was checked on their operation by the expert Pressure control device Disconnecting pressure Ro o O o T bar Connecting pressure HB o o o ER bar Low pressure control device Disconnecting pressure R SMED bar Frost protection thermo regulator Disconnecting temperature 12C Remarks This certificate is to be kept and stored in a safe place E msdetten Date 25 16 General of the refri nt plant F EIE lege E 5 lt i y Vo C ope u Vo 2 EIB eh gze a Ee pg MET Peg 3 BB Ni E ociB BB n jii iE 88 gag Pale a 88 gag TILE BS AEZ4425 2 0 2 3 230 1 50 YHR CAJ4452 4 0 4 4 230 1 50 YRH CAJ4461 4 7 5 3 230 1 50 YHR CAJ4511 6 0 7 3 230 1 50 YHR CAE9460 3 5 40 e e 16 230 1 50 ZMHR CA 9480 42 A471 j i 4 16 230 1 50 TMHR CAJ9510 4 8 230 1 50 ZMHR TAJ4517 2 5 400 3 50 ZHR TFH4524 4 0 400 3 50 ZHR TFH4531 4 8 400 3 50 ZHR TAG4546 6 6 400 3 50 ZHR TAG4553 7 4 400 3 50 ZHR TAG4561 9 0 400 3 50 ZHR TAG4568 9 6 400 3 50 ZHR TAN 4610 13 5 400 3 50 ZHR TAN 4612 17 0 400 3 50 ZHR 26
6. l water a Red AN inlet ES lt uf A ex charge E ig Pump y a LI E JJ ZZ J Gy YY circulation j Ka CORREX A N Y i NS x 7 a L g 4 thermometer ja EMT Z NO 4 water A 4 outlet LA LLLA 6 pict 2 Hn 4 charge pump AN wo A N VJ y H VJ A Ee cooling aggregate water inl safety valve circulation L Water outlet 8 500 620 therm pict 3 5 Electric supply Plants for alternating current require 1 x 230 V 50 Hz shock proof socket Plants for rotating current require a CEE socket 3x400V 50Hz For further details please consult technical data of the refrigerant machine on page 26 The exact circuit diagram is enclosed with the W ater Chiller and can be found in the switch box A Electric wiring is to be performed in accordance with regulations by the electric supply company and according to V DE 0100 6 Refrigerating plant The refrigerating plant has undergone a leak test with a test pressure of 27 5bar Forthecoolingof service water DK s W ater Chiller is generally fitted with a double walled safety multi pipeheat exchanger 60 x plants are equipped with a safety evaporator helix T he evaporator thereby correspondsto part4 of DIN 1988 Forleakag
7. aresolely to be performed by trained experts with the necessary licences and the knowledge of generallyapplicableregulationsof theV B G20 U V V V BGA for Electrical plants and equi pment as well as all applicable V DE regulations For this please refer to your responsible refrigerant experts m Maintenance work to be performed to the electrical plantis only permissible as long as itis guaranteed that the plant s electrical supply has been disconnected B DK K lteanlagen cannot be held liable for any damage caused by inappropriate handling or unauthorized intervention caused in particular to the electronic and electrical as well as refrigerating functional unit Bi The starting of the DK Water Chillers may solely be performed by those who are informed of thetechnical documentation concerning the appropriateuse of thesame K nowledgeof appropriate regulations for the prevention of accidents as well as other generally acknowledged instructions fortechnical safety is prerequisite B When cleaning the plant please observe that water does not reach those electrical functional unitswhich do not correspond with protective system IP 55 i Whenhandlig cleaning agents and disinfectants please observethe manufacturer s safety instructions carefully German Association of Electricians Thewrittenform of this documentation graphically emphasizes thoseinstructions and notesto which particular attention should be paid points out that non o
8. lamp ontheconnector potentiostat of the C O R R EX external currentanode must light continuously Socket approx at mid level of the tank In case of flashing of the red lamp see paragraph 8 1 10 A Thesupplied double wired linebetween thescrew inCORREX anodeconnector potentiostat mayby no means be elongated The possible reversal of polarity thereyby entails an accelarated corrosion Electronics amp L ong Duration A node themaintenance free protection againstcorrosion for W ater Chillers CORREX UP the external current anode for multi purpose application in enamelled storage tanks of all sizes CORREX UP long term solution for corrosion problems B reliablelong term protection B exactregulation of protective current B no over protection risk of electrolyt gas lI no consumption of anodes B no creation of anode mud B nomaintenance Wi visual operational control B VDE GS SEV tested Wi safety for long storage service life pic 7 mns 11 12 8 1 Malfunction overview CORREX external current anode Light cause remedy green operational control full protection against corrosion is not lit no protection ae nst corrosion no supply voltage re connect supply voltage supply voltage available connector potentiostat defective exchange connector potentiostat as soon as possible flashes red malfunction indicator no prot
9. switch clock evaporative pressure regulator shut off valve for evaporative pressure regulator Order Nr see list page 18 19 see list page 18 19 see list page 18 19 none 30020 3000 33600 21602 see list page 18 30021 21603 21604 21600 see list page 18 19 see list page 18 19 see list page 30022 30023 see list page 18 21601 see list page 18 19 see list page 18 19 30009 31009 30024 30025 30026 21 13 Description of Plant The refrigerant plant is designed for and set to the cooling down of service water of a maximum temperature of 259C to a maximum temperature of 2 C The condenser pos 2 consists of a double walled safety multi pipe heat exchanger for 60 x plants double walled safety condenser helix with a water condiut system and is fitted to the service water reservoir pos 1 On the water carrying side the safety heat exchanger is flooded via the charge pump pos 3 Ontherefrigerant carrying side the same heat exchanger is equipped with a thermo regulatorx expansion valve pos 14 and connected to the cooling aggregate pos 16 The cooling aggregate is equipped with a condenser a dryer pos 22 a viewing glass pos 21 and electrovalve pos 15 an HP and an LP switch pos 17 amp 18 a compressor and rotary current plants have an additional switch box pos 19 Asanti freezing protection a frost protection thermo regulator pos 10 is mounted to the safety mult
10. 1 NL EN ULL safety valve Y poo Ta PADS safety group complete Theexitsideof thesafety valves mustbeatleastonenominal width larger than thatof the entranceside Theblow outsidemusthaveatleastthe sizeof thesafety valve exitprofile however may nothave more than 2 curves and may not be longer than 2 mtr see DIN 4753 Part 1 The blow off mouth must be accessible visible as well as of such design that no injury will be inflicted on any person during blowing off If the admission pressure is higher than the tank s permissible operational excess pressure the cold water pipe is to be fitted with a pressure reducing valve DK offers the water safety armature in compliance with such demands T his armatureis fitted to the cold water inlet on the side of the tank used The fresh water inlet is to be connected to the tank s casing on top on the side The cold water outlet flow pipeto the point of consumption is to be connected to the bottom Fortheconnection of thecirculation pipe solely theconnection intended forthis purposeisto be For the exact position of the connections please consultthe following drawing pict 2 amp 3 M ODEL KWB 180 950 quick action ventilating valve refrigerant in out MODEL KWB 90 manual ventilating H valve frost protection 7 RAR RAZA AAAI LEL LLL
11. 5 60 TES2 1 DN052 SGI6IA EVR3 215kg 280 TAJ4517z2 64 6 1 33 UPS25 60 TES2 2 DN083 SGI10IA EVR6 FT3200 230kg MGE16 400 TAJ4517z2 64 6 1 33 UPS25 60 TES2 2 DN083 SGI10IA EVR6 FT3200 260kg MGE16 400 TAH4524276 10 1 2 UPS25 60 TES2 3 DN083 SGI10IA EVR6 FT3200 280kg MGE22 400 TAH4531z 76 10 1 7 UPS25 60 TES2 4 DN083 SGI10IA EVRO6 FT3200 315kg MGE28 700 TAH4524276 10 1 2 UPS25 60 TES2 3 DN083 SGI10IA EVR6 FT3200 360kg MGE22 700 TAH4531z 76 10 1 7 UPS25 60 TES2 4 DN083 SGI10IA EVR6 FT3200 395kg MGE28 950 TAGA45462 89 14 1 6 UPS25 60 TES2 5 DN083 SGI10IA EVRO6 FT3200 475kg MGE36 950 TAGA45532 89 14 1 8 UP25 80 TES2 5 DN083 SGI10IA EVRO6 FT4300 475kg MGE40 950 TAG45612108 201 5 UP25 80 TES2 6 DN083 SGI10IA EVR6 FT4300 495kg MGESO 950 TAG 4568z 108 20 1 7 UP25 80 TIE 5 DN084 SGI121A EVR10 FT4300 510kg MGE64 950 TANA461021108 202 3 UP32 80 TIE 6 DN304 SGI10IA EVR10 FT4300 615kg MGES80 950 TANA4612 1133 282 0 UP32 80 TCLE600 DN304 SGI10IA EVR10 FT4300 635kg MGEI100 SW B6B Spare parts list of 90 Itr multi compressor plants model 90 1 to 90 4 s o sz amp amp amp amp tn tn tn tn z z z z v v v v Cooling AEZ CAJ CAJ ICAJ Aggregate 4425 4452 4461 4511 Evaporator 16 10 16 10 18 12 22 16 0 4m 0 8m 1 2m 2 0m Charge UP20
12. bservance may lead to personal injury or damage of the technichal equipment H provides useful information concerning regulatory application or maintenance of the product s service value 2 Service In your own interest please observe that necessary repair work within the warranty period may solely be performed by aservice facility authorized by DK K alteanlagen GmbH Y ou ensure your warranty rights by doing so Repair and maintenance work on electrical and refrigerant equipment is only to be performed byconcessioned refrigerant companies holding thenecessary licences F orthis pleasereferto your refrigerant specialists 3 Fittingand assembly The place of installation should be protected against frost and be provided with afloor drain TheDK Water Chillerisa double layer enamelled steel tank with a fitted cathodic protection against corrosion T he tank s strong design ensures that during normal handling the internal thermo glazing is not damaged Thestoragetank of models K WR aremadeof raw steel T hey aremadefor using in aclosed water system e g air conditioning A Itmustbe observed notto submittheequipmentto hard concussions e g by placing ithard on one foot when unloaing from the lorry No welding work may be performed to enamelled tanks Refinishing work on the enamelling is prohibited Insulation consists of 2 pieces of PUR shells with a glass fiber reinforced plastic coating wh
13. ection against corrosion no water in tank fill with water connecting wires reversed see instructions for CORREX anode Wiring connection from connector potentiostat to anode rod interrupted re connect observe polarity Wiring connection from connector potentiostat to ground tank interrupted check cable lugs on contact and corrosion anode rod has contact to fittings in tank and therefore to ground disable connection to ground and return electronics by quick pulling of the plug 8 2 Malfunction overview of pumps M alfunction cause remedy pump does notstart defective current supply check fuses and possible loose clamps defetive condenser exchange condenser pump inhibited by residues in the bearings unblock rotor insert screw driver in slot and turn manually pic 5 page 9 dirty pump dismantle pump and clean it plant makes noise air in plant vent plant disconnect plant for this pump makes noise airin pump vent pump pic 6 page 9 admission pressure too low increase admission pressure or check gas volume in expansion tank if any 8 3 Malfunction overview plant 8 3 1 Alternating current plants 230V 50Hz M alfunction Plant does not start A ggregate does not start circulation pump running Pressure switch dis connects plant refrigerant Creation of condensation on pipes or connectors cause remedy no voltage check fuses and any poss
14. eindication acapillary pipewith safety valve issolderedtotheevaporatorinthegap Schrader valvein 7 16 doublenipple T heopening pressure amounts to 0 5bar see pic 6 page 8 A The conventional dimension of 7 16 used in the refrigerant industry does not apply to the refrigerant connection but serves solely as leakage indication of the double walls Attention If any liquid exits the mouth the evaporator heat exchanger is defective n such acase an expertis to be called instantly and is to perform a pressure test according to DIN 1988 part 8 The safetymouth may by no means be sealed Position of 7 16 safety valve connection refrigerant aA inlet connecting suction line refrigerantoutlet water connection MMMM OY pic 4 ZN In accordance with V BG 20 the refrigerant plantis equipped with a high pressure H P switch tuned to a condensation temperature of 55 C This value corresponds to an ambient temperature of approx 36 C M aximum ambient temperature must be ensured by sufficient ventilation of the premises Thelow pressure L P switch of therefrigerant plant disconnects itself in such conditions as well as in case of a lack of refrigerant or icing of the double walled safety evaporator Observerange 7 Starting the plant A The W ater Chiller may only be started after having been completely filled with water and after conscienti
15. he V GB 20 entitled Protection against exposureto refrigerants is to be observed 25 15 Certificate for thetesting of arefrigerantplantaccordingto V GB 20 15 1 Identification data DK K lteanlagen GmbH D 48282 E msdetten M anufacturer s number Y ear of construction Model Refrigerant Highest capacity of refrigerant plant kg Permissible operating excess pressure bar T otal weight of plant kg Type of plant Compressor refrigerant plant with piston compressor 2 Leak test M eans of testing excess testing pressure bar No defects became evident during the leak test performed 3 Acceptance test according to regulations on pressure tanks The first testings of the refrigerant plant s pressure tanks have been certified by means of certificates and or stamps The pressure tanks of testing groups II and V have been submitted to an acceptance test according to TRB 531 No objections resulted from the testing Checking the installation of the pressure tanks of the testing groups IIl and IV for which an acceptance test has been completed entailed no objections The acceptance test of pressure tanks of the testing groups II and IV by the expert 31 of pressure tank regulation beforeinstallation is to be performed has been performed 24 Proper condition Theproper condition of the refrigerant plant was checked by expert on
16. i pipe heat exchanger and if the need arises the cooling aggregate is disconnected whilstthe charge pump remains activated in order to avoid freezing The water temperature is adjusted via the thermostates pos 5 installed abovethe service water reservoir which controlsthe cooling aggregate For adjustment of the permissible operating excess pressure of the individual pressure level LP and HP side the HP or the LP switch respectively operate the cooling aggregate 14 Technical data Company installting plant stamp Technical data of the refrigerant plant M anufacturer L unite Maneurop DWM other Design of compressor fully airtight semi airtight Condenser air cooled 22 MODEL Y ear of construction Design Nr Capaity kg Permissible operating excess pressure bar Nominal performance of driving motor kW Voltage V Ph H 2 Nominal current A A FIRST AID Incaseof injuries accidentsorintoxication pleasecontactthefollowing telephonenumbers immediately Emergency Tel Fire Tel A Refrigerantfilling Only use the prescribed R refrigerant Physical protection equipment In caseof larger escapes of refrigerant if necessary enter the machine room solely with a gas mask or with respiratory equipment and protect face and hands from direct exposure to refrigerant 23 concering the regulations of the prevention of accidents of t
17. ibly loose cable connections and other fitted switchgear e connect switching thermo regulator red button frost protection thermo regulator thermo regulator might be set too low setthermo regulator higher airin plant vent tank once again above manual ventilating valve while disconnected electro valve has activated via LP switch haveit checked by specialists increased condensation pressure due to choked condenser clean finned grid atthe cooling aggregate increased condensation pressure dueto ambient temperature above 36 C lower ambient temperature evaporating pressure too low caused by too little refrigerant bubbles in the viewing glass have it checked by refrigerant specialists circulation pump does not deliver water via evaporator have circulation pump checked insufficientambienttemperature increase ambient temperature vapour proof insulation damaged overhaul insulation 13 14 8 3 2 Rotary Current Plants 400V 50Hz M alfunction cause remedy Plantdoesnotstart novoltagesupply check fuses and any possibly loose cable connections and other fitted switchgear connect main switch operate switching thermo regulator red button protective motor switch has activated red control amp verify voltage ud pases missing external conductor release protective motor switc A ggregats doesnot X frost protection thermo regulator thermo regulator might be set too low start
18. ich is sealed against diffusion of vapour by the manufacturer Plant models K W B 90 are insulated with a soft foam to prevent diffusion of vapour Thetwo shells may not be dismantled for assembly A Thetank may only be moved by means of the provided aids for transportation coloured marking Do not charge water or refrigerant pipes The plant is to be assembled in such a manner that it may be viewed from all sides and with sufficientroom availablefor maintenance work to be carried out 4 Water connection Inordertolimitflawsintheenamel coating as much as possible thetanks are provided with inched external thread N pic 1 W hen performing thewater connection pleaseobservenotto usetoo much hemp astoo thick ahemp packing may damagethe enamel in the connecting nipple Dueto the expansion of water during temperature changes it is necessary to protect the DK W ater Chiller against excessive pressure W ater connections areto be performed accordingto DIN 1988 and local regulations i e a safety relief valveis to be installed according to the permissible operational excess pressure of the tank withoutshut off option towards the same Standard operational excess pressure 6 bar see Connection diameter of safety valves nominal capacity of tank connection min up to 200 over 200 up to1000 over1000up to5000 DN 15 DN 20 DN 25 pic
19. ous ventilation Fill water into tank equipmentis switched off while opening the manual ventilating valveatthe highest point of the pump line see pic 2 page 6 Close manual ventilating valve only after air has completely escaped the tank With alternating current plants the W ater Chiller is switched on at the thermo regulator with rotary current plants at the main switch The thermo regulator is already set to desired value temperature and has been checked Do not changethermo regulator Beforestarting aswell as atregular intervals thefunctions of theC ORR EX external currentanode areto be verified forthis please consult paragraph 8 For rotary current plants attention must be paid to the correct rotating sense of the pump see pic 5 and to the ventilated motor For this see arrows on equipment indicating rotating sense A Charge pump The sense of rotation is to be verified atmaximum RPM rotary current pumps pic 5 Also vent pump at max RPM pic 6 If any proceed in same manner with circulation pump Thesound pressure level is below thelimits stipulated by EG regulation 98 37EG for machines 8 Corrosion protection TheDK Water Chiller is equipped with anodes for cathodic protection against corrosion CORREX external current anodes are maintenance free and are to be connected to a 230V socket Thegreen indicator
20. t anodes the latter may only be disconnected after the water has exited the tank In order to empty the tank disconnect the water inlet vent the tank and empty it a the lowest point After this the system may be released from voltage by unscrewing the fuses or by pulling the supply plug or by disconnecting the main switch A Service water plants which are not taken into operation within 4 weeks after their assembly or which have been closed down for morethan six months areto beshut off atthe house connection mains shut off armature and emptied Service water plants which may be submitted to frost effects are to be emptied in time 16 11 Re Starting W hen re starting after having interrupted operation itis usually sufficientto completely openthe individual points of outletfor ashorttime approx 5 minutes in order to drain residual water inthe pipes Re start plant according to instructions in paragraph 7 on page 10 17 12 SparePartsList Technical refrigeration accessories in order of volume of tank l 5 xe EG a Q ic 5 B 5 Ir coy E o 2 b i ov Z coh 3a 8 P5 538 B BO 8 Gs ws 6 6 E gt o T n gt no 180 CAE94602 54 4 1 0 UP20 30 TES2 0 DN032 SGI6IA EVR3 180kg 180 CAJ94802 54 4 12 UP20 30 TES2 1 DN052 SGI6IA EVR3 _ 195kg 280 CAJ95102 54 4 13 UPS2
21. waste heat into the surrounding air In order to guarantee a troublefree operation the fins are to be cleaned depending on the degree of soiling 9 1 Maintenance of the water relief valve AN D uringtheoperation of theplant the operational control isto beverified atregular 6 monthly intervals by checking theresponsiveness of the water relief valve Itisto beobserved whether the valve closes again after release of venting equipment and whether the collected water drains off completely via the funnel or the blow off pipe 15 9 2 M aintenance of pressure reducer A During operation of the plant the set delivery pressure at the pressure gauge visual control is to beverified atzero flow rates and at peak flow rates large output T he operator isto perform such an inspection on an annual basis Pressure reducers are regulatory devices with low adjusting force and are therefore extremely proneto impurities Thesieveisto becleaned and in certain circumstances to be replaced T heinterior components areto be checked on their perfect state and if necessary be replaced Such maintenance procedures areto be performed by theinstallati on specialists every 1 to 3 years depending on thelocal operational conditions 10 Closing down Switch cooling aggregate off viathermo regulators red button For service water chillers with built in CORREX external curren
Download Pdf Manuals
Related Search