USER MANUAL
Contents
1. Connection central casing pump casing 1 Orns O O ring E EA E oro 22 26 ES A E E connection air 2 6 412 8 412 9 412 12 e 9 E E EA u 4 1 001 2001 5 05 LEGEND 50 75 100C 100 125 note ref pos Description 1 2 1 5 6 7 2 5 fa fm CIO TT TT E 2 rneumane renange 22925 1 ae __ 5 PTFE Diaphragm SCS ap fluid side ifold vers SS SP ifold vers SS SP P Fexhaustoover 100 az Pump casing Pros rosa 12 5558 128 Manto ers 555 Pst 19 earmer Tr 16 Te r ron MEJO 2 discharge coaxial cham 2103 20 Connection foot coaxial chamber 1 ann sen etl 910 5 Connection coaxial chamber casing2. 529 go 95 3 og o 5 5 Es D A v 5 nO gt gt x v D 3 Le gt 5 x 5 2 Connection silencier cover casing oo 0 10 0910 012919 5 9 99 8 515 5 515 ja alo alo o o 5 5 5 a 818 ie gt ola 3 gt gt 313 55 31 5 v o 51 53 n mn apa gt 71 camp gest se eam ES Spare stock for Disassembling steps sequence working years 2 3 un GENERAL NOTES ASTRA series pumps are air operated double diaphragm positive displacement pumps designed and manufactured for pumping fluids that are chemically compatible with the constructive materials of the pump The characteristics of the fluid pressure temperature chemical reactivity specific weight viscosity vapour pressure and of the environment must be compatible with the pump characteristics and are defined in the ordering phase The
3. do not operate valves or shunts during the pump operation e risk of harmful water hammers in case of incorrect or sudden operations valves must be operated only by trained personnel empty and wash accurately inside the pump in case different fluids must be pumped e insulate or empty the pump if the fluid crystallization temperature is equal to or below the ambient temperature stop the pump if the fluid temperature exceeds the maximum allowed temperature indicated in the GENERAL NO TES if the exceeding temperature is about 20 it is necessary to inspect the status of the internal parts stop the pump and close the valves in case of leaks wash with water only if chemical compatibility allows it alternatively use the suitable solvent that does not generate hazardous exothermic reactions e consult the fluid supplier to decide the most suitable fire prevention method empty the pump in case of long periods of disuse particularly with fluids which are particularly tending to crystalli ze e check that there is no gas in the delivering fluid if there is stop the pump STOP To stop the pump operate exclusively on the air supply closing the 3 way valve discharging in this way residual pres sure from the pneumatic system of the pump WARNING never stop the pump by totally closing the suction and or delivery valves of the hydraulic circuit MAINTENANCE all the operation must be carried out by qualified personnel
4. P 910 6 1 coaxial chamber casing vers SS 2 Connections dara Teasing 23 comecion sienciercover easing als ome SSCS MEE 26 om MIE ze om MEA 20 ee ooms peera owns pe e oms pe oms Te a5 3 oe P fase eem ong AAA em WR FC WX Al LEGEND 150 200 sp esos free fo fo __ Te 12 705 1 12 A Elbow manifold up side vers SS SP 705 2 12 8 Elbow manifold down side vers SS SP pepe Sealers eras Jo ea 27 ea Jo Shaft TO M O UJOJO O gt S U 21 7 9 9 9 9 5 5 2 312 3 5 pel gt 5 lt 13 3 0 28 41 lt 1 09 41 1 51 29 D 1 2 8 lo 31651 a a gt 3 D 5 s mies connection discharge coaxial cham T vers SS gt 19 v s z ajg 5 5 a 2
5. all the air connections especially the quick couplings Check that all the air control devices have a sufficient flow rate WARNING In 90 of the cases stall conditions depends on the quick couplings Disassemble the manifolds and clean the seats or replace the The balls do not close balls and the seats Insufficient air volume 21 TECHNICAL DATA DIMENSIONS 25R 38R 50R 50C 3 B lt gt Y a a 1 I A a O E REA A gt pz E 1 e T f 50 75 100 100 125 289 3 1 a B 150 200 WR FC Al 150 200 SS SP THERMOPLAST
6. do not carryout maintenance and or repairs with the air circuit under pressure carry out periodic inspections 2 30 days in accordance with the fluid pumped to check the filtering elements clea ning carry out periodic inspections 3 5 months in accordance with the fluid pumped and with the environment conditions to ensure the correct operation of the system start stop units the presence of fluid under the pump casing may indicate failures to the pump damaged parts must be replaced with complete original parts and not with repaired parts the replacement of damaged parts must be carried out in a clean and dry place RECOMMENDATIONS WARNING before performing any maintenance or repair work on the pump disconnect the pump from the air supply line Disconnect the hydraulic connections and discharge the product that is being pumped all the operation must be carried out by qualified personnel use gloves goggles and acid resistant clothing when disconnecting from the system and washing the pump wash the pump before carrying out maintenance operations do not disperse the washing waste into the environment 16 DISASSEMBLY Bolts are the type with right thread Clean all the pump external surfaces using a damp cloth Ball seats removal for all models Remove the delivery and intake manifolds removing the tightening bolts Pull off the seats the balls and the related cages Check the condition of the gasket
7. pump performances flow rate head and minimum pressure are decided in the ordering phase and indicated on the nameplate ASTRA series pumps self priming at the start up the pipes can be empty The declared dry negative suction is referred to intake of water at a temperature of 20 C 68 F The priming time and the diaphragm s life depend on the suction circuit total length diameter specific weight of the pumped fluid viscosity of the pumped fluid negative suction max 5 000 cps at 18 C 64 4 F below head suction max 50 000 cps at 18 C 64 4 F ASTRA series pumps may be used dry ASTRA series pumps cannot be used to generate a vacuum Make sure that the physical chemical characteristics of the fluid have been correctly evaluated The maximum temperature referred to water in continuous operation depends on the version of the materials indicated on the nameplate and on the environment in which the pump will be installed MAX Temperature C F 80 C 176 F 95 C 203 F ALC 80 C 176 F 95 C 203 F 80 C 176 F 95 C 203 F The ambient temperature interval is related to the choice of materials specified on the identification plate WAKAT COTA AL SP 0 WR FC DF SS AL 40 40 0 40 40 40 SP 40 C 14 104 The pump may be operated at a maximum pressure equal to 1 5 times the head valu
8. stop valves closing emptying of pump casing pipes disconnection from the connections unlocking of fastening screws to the base washing with water or suitable solvent as appropriate transport Work to be carried out by skilled personnel required technical skills notions of mechanical processing sensitivity with regard to damage to parts for impacts or abrasions during handling familiar to tighten bolts on different plastic metal materials use of precision measuring instruments casing opening and reclosing removal and replacement of damaged parts DISPOSAL For type of material separate plastic parts from metal parts and dispose of by authorized companies 20 TROUBLESHOOTING AND POSSIBLE CAUSES not star 5 Open some valves or remove the pipes and check if the Pump delivery or intake closed pump starts Damaged discharge cover Replace Check if air comes out of the product delivery pipe if yes Broken diaphragm replace the diaphragm Disassemble the manifolds and clean the seats or replace the The balls do not close balls and the seats The pump works butit does not pump Too viscous fluid Excessive intake height Reduce the intake height Install pipes with greater size especially for intake and decre ase the pumps cycles Clogged intake Check and clean Excessively viscous fluid No remedy The pump works Check and clean with slow cycles Clogged d
9. 2 GD T135 C Il 2 2GD surface equipment for use in areas with the presence of gases vapors or mists in addition to clouds of combustible dust in the air that occur occasionally during normal operation EN 1127 1 par 6 3 both in external and internal areas ZONE 1 protection by constructional safety EN 13463 5 11B excluding the following products hydrogen acetylene carbon disulphide T135 C class of admitted temperatures The processed fluid temperature value must fall within such class range and the user must comply with the instructions contained in the manual and with the current laws Furthermore the user must take into ac count the ignition point of the gases vapors and mists in addition to clouds of combustible powder in the air existing in the area of use Ex 11313 GD T135 C 11 3 3GD surface equipment used in areas where the presence of gas vapors or mists in addition to clouds of combustible powder in the air is unlikely during normal operation both in external and internal areas and if it does occur it will only persist for a short period ZONE 2 c protection by constructional safety EN 13463 5 11B excluding the following products hydrogen acetylene carbon disulphide T135 C class of admitted temperatures The processed fluid temperature value must fall within such class range and the user must comply with the instructions contained in the manual and with the curre
10. A USER MANUAL ASTRA Part number DEALER for Maintenance date of commissioning TABLE OF CONTENTS 3 IDENTIFICATION CODE 5 LEGEND 6 GENERAL NOTES 7 OPERATING PRINCIPLE 7 PNEUMATIC CONNECTION 8 INSTALLATION AND USE INSTRUCTION 8 TRANSPORT 8 STORAGE 8 INSTALLATION 9 START UP 9 USE 9 STOP 10 MAINTENANCE 10 RECOMMENDATIONS 10 DISASSEMBLY 10 INSPECTION 11 SAFETY RISKS 11 OPERATORS FOR INSTALLATION AND START UP 12 OPERATORS FOR USE AND MANTENANCE 12 OPERATORS FOR REPAIR 12 DISPOSAL 13 TROUBLESHOOTING AND POSSIBLE CAUSES 14 TECHNICAL DATA 15 CONNECTIONS 15 DIMENSIONS 15 WEIGHT PERFORMANCES IDENTIFICATION CODE PP lo 75 lished a Keyflex PTFE polishes 100C AISIS16 o MT 100 santoprene PTFE 125 171 4 150 1 1 27 200 27 Year of manufacture Partnumber Each pump is supplied with the serial and model abbreviation and the serial number on the rating plate applied onto the support side Check these data upon receiving the goods Any discrepancy between the order and the delivery must be communicated immediately In order to be able to trace data and information the abbreviation model and serial number of the pump must be quoted in all correspondence RANGE MODEL PART NUMBER year of manufacture XXXX 01 13GcT4 Ex 12
11. DEATH WARNING the pump must not be used with fluids that are not compatible with its construction materials or in a place containing incompatible fluids CAUTION installing the pumps without on off valves on the intake and delivery sides to intercept the product in case of spillage is forbidden danger of uncontrolled product spillage CAUTION installing the pumps without on off threeway or check valves on the air supply piping to prevent the pumped liquid from entering the pneumatic circuit if the diaphragms are broken is forbidden danger of fluid entering the com 18 pressed air circuit and being discharged into the environment WARNING Should the user think that the temperature limits set forth in this manual may be exceeded during service a protective device must be installed on the system to prevent the maximum allowed process temperature from being reached If exceeded respect of the maximum temperature marked cannot be guaranteed WARNING The pumps must always be grounded irrespective of any organ to which they are connected Lack of groun ding or incorrect grounding will cancel the requirements for safety and protection against the risk of WARNING the use of pumps made with non conductive material which become charged with static and without suita ble grounding for flammable liquids is forbidden RISK EXPLOSIONS DUE TO STATIC CHARGE CAUTION Aggressive toxic or dangerous liquids may cause serious injuries or dama
12. Diaphragms removal DDA 25R 38R 50R Remove the two casings air side Remove the plates that lock the diaphragms Remove the diaphragms and the related backing plates DDA 50C 50 75 100C 100 125 150 200 Remove the delivery and intake manifolds removing the tightening bolts Remove the deposits from the internal surfaces Remove the two pump casings Remove the plates that lock the diaphragms Remove the diaphragms and the related backing plates would be necessary to disassemble the shaft remove one of the two diaphragms on air side and then pull off the shaft Pneumatic distributor removal DDA 25R 38R 50R turn about 90 clockwise or anticlockwise the pneumatic exchanger cap pos 36 slip off the pneumatic exchanger cap and the spool if necessary use a M6 screw for slip off the spool DDA 50C remove the manifolds pump casing and diaphragms remove the bolts pos 22 and divide the semi central casing DDA 50 50 75 100 100 125 150 200 Remove the seeger ring of the transverse sleeve of the central casing Overturn the pump and with the aid of a M6 mm punch and a press pull off the distributor this operation may be carried out with pump casings assembled check that the tightening bolts of the pump casings located on the upper area of the distributor to not obstacle the distributor removal WARNING the pneumatic distributor shall not be opened to prevent an incorrect reassembling that may cause the pump malfunctio
13. IC PUMPS Modi sc 9 mo 725 20 eb Fr ee es ae Suction without m 5 5 liquid Mme fee er oar oar oer oer oar EZ EZ 27 EB EZ pressure en Js 8 flanged connections METALLIC PUMPS me qa EI E EEE EEE oe foe T alola 95 582 45 345 1 1 4 Sue al 394 434 434 12 5 aa a 11 2 o NIN 11 2 gt a i i a a 23 MANUFACTURER DATA Production head and legal office Via Labirinto 159 1 25125 BRESCIA Tel 030 3507011 Fax 030 3507077 CHEMICAL PUMPS Administration Tel 030 3507019 Export manager Tel 030 3507022 Customer service Tel 030 3507025 Web www argal it E mail sales argal it CONTRACTUAL DATA medium temperature capacity 9 04 12 INSTRUCTION MANUAL must be delivered to the pump user who takes diligent note of it fills in data for Maintenance Dep
14. USTMENT DOSING except for models 25R 38R 5 50C It is possible to supply the pneumatic control circuit and the pneumatic power circuit with two separate air lines in order to allow fine adjustment of the pump working cycle INSTALLATION AND USE INSTRUCTIONS TRANSPORT cover the hydraulic connections lift the hydraulic plastic parts without mechanical stress for transport on irregular roads cushion the bumps with suitable support plane blows and impacts may damage parts that are important for the machine operation and safety USE do not operate valves or shunts during the pump operation risk of harmful water hammers in case of incorrect or sudden operations valves must be operated only by trained personnel empty and wash accurately inside the pump in case different fluids must be pumped insulate or empty the pump if the fluid crystallization temperature is equal to or below the ambient temperature stop the pump if the fluid temperature exceeds the maximum allowed temperature indicated in the GENERAL NO TES if the exceeding temperature is about 20 it is necessary to inspect the status of the internal parts stop the pump and close the valves in case of leaks wash with water only if chemical compatibility allows it alternatively use the suitable solvent that does not generate hazardous exothermic reactions consult the fluid supplier to decide the most suitable fire prevention method empty the pump in case of
15. artment page Copyright 2008 ARGAL srl Be Draw and text total or partial duplication is 1 keeps the file for subsequent reference Possible modifications do not prohibited imply updating of the existing manuals
16. by 0 5 m e ascertain that the fluid treated does not contain or cannot contain large solids or solids of a dangerous shape ensure thet the intake or delivery ports are not obstructed nor limited to avoid cavitation or pneumatic motor strain e also ascertain that the connection piping is strong enough and cannot be deformed by the pump weight or by the intake Also check that the pump is not burdened by the weight of the piping pump is to stay in disuse for a long period of clean it carefully by running a non flammable liquid detergent through it that is compatible with the pump s construction materials if the pump was turned off for long period of time circulate clean water it in for some minutes to avoid incrusta tions e before starting after long periods of disuse clean the internal and external surfaces with a damp cloth e check the grounding always protect the pump against possible collisions caused by moving objects or by various blunt materials that may damage it or react with its materials e protect the pump s surrounding ambient from splashes caused by accidental pump failure WARNING the air supply pressure must never be over 7 bar or below 2 bar WARNING when using the pump with aggressive or toxic liquids or with liquids that may represent a health hazard you must install suitable protection on the pump to contain collect and signal any spills DANGER OF POLLUTION CON TAMINATION INJURIES AND OR
17. ch diaphragm has carried out one air discharge stroke and one fluid delivery stroke This sequence of movements makes up a complete pumping cycle PNEUMATIC CONNECTION WARNING the pneumatic supply of ASTRA series pumps must be carried out with oil free filtered dry and unlubri cated air Avoid pressure drops by using pipes and adjusting and controlling elements having characteristics suitable for the pump In case of installation in atex zone the compressor must suck air from outside the area classified as atex or use inert gas Minimum pressure supply 2 bar Maximum pressure supply 7 bar STANDARD 1 pressure regulator with gauge 2 shut off valve 3 valve 4 flow regulator Compressed air supply pipes nominal dimensions maximum length between tube and pump plant 5m 13 FINE ADJ
18. e with closed delivery The value of the vapour pressure of the pumped fluid must be greater of at least 3 mwc meters of water column than the difference between the total absolute head value pressure on suction level subtracted of the suction height and the leakages of the suction section series pumps except for models 25R 38R 50C are equipped with flow regulator on the pneumatic supply circuit The pumped fluid may contain particles suspended in different concentrations in accordance with the type of valve as sembled max dimension men 2 fa e 12 OPERATING PRINCIPLE The pneumatic distribution system sends compressed air behind one of the two diaphragms A which pushes the fluid towards the delivery circuit Simultaneously the opposite diaphragm is in the intake phase since it is dragged by the shaft that connects it to the other diaphragm A under pressure air present behind it is discharged into the environment through the flow rate regu lator present on the pump except for models 25R 38R 50R while a pressure drop is created the fluid chamber which sucks the fluid from the suction circuit When the diaphragm A under pressure reaches the stroke limit the distributor switches the two inputs to the chamber on the diaphragms air side putting diaphragm B under pressure and diaphragm A in discharge When the pump reaches its original starting point ea
19. elivery pipe Clogged intake Check and clean Internal pneumatic exchanger clogged or defective Worn shaft Ice on the discharge Replace the pneumatic exchanger Replace the pneumatic exchanger The pump works Dehumidify and filter air irregularly Check the air control fittings especially the quick cou plings Replace Air volume is lacking Internal exchanger dirty Intake clogs during operation Replace the intake pipe Dirty air full of condensate or oil Check the air line Check the pressure with a gauge installed on thepump and with running pump If pressurein that point is too low related to the mains pressure check all the air connections especial ly the quick couplings Check that all the air control devices have a sufficient flow rate WARNING In 90 of the cases stall conditions depends on the quick couplings The pump stalls Insufficient air volume or pressure Defective distributor Replace it The stop procedure was not respected Respect the stop procedure The product intake pipe is not correctly connected Check Clogged pipes Check and clean Install pipes with greater size especially for intake and decre Too viscous fluid ase the pumps The pump does not deliver the flow rate indicated on the table Check pressure with a gauge installed on the pump and with running pump If pressure in that point is too low related to the mains pressure check
20. ge to health therefore it is forbif fen to return a pump containing such products to the manufacturer or to a service center You must empty the internal circuits from the product first and wash and treat it CAUTION Pumps containing aluminium parts or components coming into contact with the product cannot be used to pump Ill trichloroethane methylene chloride or solvents based on other halogenated hydrocarbons DANGER OF AN EXPLOSION CAUSED BY A CHEMICAL REACTION CAUTION The pumps ASTRA cannot pump Acetylene Hydrogen Carbon disulfide CAUTION The components of the pneumatic exchanger including the shaft are made from materials that are not spe cifically resistant to chemical products If the diaphragm should break replace these elements completely if they have come into contact with the product CAUTION The air driven motor of the ASTRA pumps is self lubricating and will not require any greasing Therefore avoid using lubricated and non dried air WARNING ascertain that during service no anomalous noise appears In that case stop the pump immediately WARNING ascertain that the fluid at the delivery side does not contain gas Otherwise stop the pump immediately WARNING the diaphragms in contact with the product or the external ones are highly subject to wear Theirduration is strongly affected by the conditions of use and by chemical and physical stress Fields tests carried out on thousands of pumps with a head value from 0 t
21. long periods of disuse particularly with fluids which are particularly tending to crystalli ze check that there is no gas in the delivering fluid if there is stop the pump INSTALLATION 14 it is essential for the pump self priming operation that the hydraulic system is leakproof clean the system before connecting the pump the pump must not contain foreign bodies and all the seals on the hydraulic connections must be removed check the correct tightness of all the screws on the pump the pump positioning is horizontal the fluid delivery manifold must always be positioned in the upper part see ar rows on the pump casing fastening may be on the floor or on the ceiling position the pump the closest possible to the point of collection use the plant solutions indicated in the following diagram 1 YES use flexible pipes reinforced with rigid spiral to connect hydraulic circuit of the pump Rigid piping may cause strong vibrations and manifolds breaking Do not use pipes with nominal diameter smaller than the diameter of the pump connections For negative installations and or viscous fluids use pipes with greater diameter related to the nominal diameter of the pump YES pulse damper YES gate valve for delivery adjustment YES intake for gauge or protection pressure switch YES pipe anchoring YES shut off valve NO air pockets the circuit must be linear and short YES discharge duct arou
22. nd the base YES wide and rigid filtering separator in case of open tanks YES wide and rigid filtering separator in case of open tanks N gt 5 E N Atm ensure drainage of fluids which may come out of the pump fix the pump using all the available locking holes the support points must be levelled arrange for enough room around the pump for the movements of an operator arrange for free space above the pump for lifting it inform about the presence of aggressive fluid with suitable coloured labels in accordance with the related standard do not install the pump built with thermoplastic material near heat sources do not install the pump in places with risk of fall of solids or fluids do not install the pump close to fixed workplaces or visited areas install additional protection shield for the pump or for the persons as appropriate If the diaphragm breaks the fluid may enter into the pneumatic circuit and come out from the pump discharge port install a spare equivalent pump connected in parallel the pump must be always electrically earthed if the pump is made from conductive materials and is suitable for flammable products each pump casing must be equipped with a suitable ear
23. ning INSPECTION Check the absence of excessive abrasion of the thermoplastic parts clots and or agglomerates due to the pumped fluid deformations and or surface lesions of the diaphragms deformations and or breakages on the valve seats Replace the parts broken cracked deformed Reopen all the clogged ducts and eliminate any chemical agglomerates Clean all the surfaces before reassembly particularly the OR gaskets seats risk of leaks for dripping CLEANING AND REPLACING THE DIAPHRAGMS control and internal cleaning every 500 000 cycles diaphragm check every 5 000 000 cycles diaphragm replacement every 20 000 000 cyclesi 17 SAFETY RULES WARNING CHEMICAL RISK Pumps are intended for operation with different types of fluids and chemical solutions Follow the specific internal instructions for decontamination during the inspection or maintenance operations WARNING ELECTRICAL RISK The pump must always be earthed independently to other members connected to it Safety requirements and explosion risk prevention are not fulfilled if the pump is not earthed or is incorrectly earthed WARNING the diaphragms into contact with the product and external are components extremely subject to wear Their duration is strongly affected by the conditions of employments and by chemical and physical stresses By tests carried out on thousands of pumps installed with head value from 0 to 18 C the ordinary life exceeds one hund
24. nt laws Furthermore the user must take into ac count the ignition point of the gases vapors and mists in addition to clouds of combustible powder in the air existing in the area of use LEGEND 14C 38C 50C note ref Description Er 4 5 7 12 2 5 fa e sa e e Di 4482 Diaphragm zoo a ap tia sde os 2 manos __ C M CTE 19 Mantel connection centrai casing mania oros 21 Connection central casing casing side Ta Tera fara 28 owing Taza ae EEE 92 36 sher p air si p fluid si anifold ll seat LEGEND 50C isassembling steps sequence 5 note ref pos Description working years 2 5 6 7 8 o 5 2 E 121111111 tt on e Premica fen ON E E IO es 6 foso tarse ars 1 E E E asa ro 2 PT 295 2 Ball seat Ey Manifold connection outlet side pump casing 2 __
25. o 18 C have shown that normal service life exceeds one hundred million cycles However in places at risk of explosion the diaphragm must be disassembled and checked every 5 million cycles and replaced every 20 million cycles WARNING Periodic controls must be made to ensure that there is no powder and or deposits on the external and inter nal surfaces of the pump and if necessary they must be cleaned with a damp cloth WARNING removal of the silencer and the air supply fitting must be done when free from powder Before restarting the pump ensure that no powder has entered the pneumatic distributor To replace worn parts use only original spare parts Failure to comply with the above may give rise to risks for the operator the technicians the persons the pump and or the environment that cannot be ascribed to the manufacturer However five general elements are important A all the operations must be carried out by skilled personnel or monitored by qualified personal as appropriate B implement personal protection works when the pump is installed in places involving more than occasional visits against splashes of fluorescent fluid for accidental breakage and conveying works always of possible fluid leakages towards collection tanks C wear acid resistant clothing and protection whenever operating on the pump D make sure that the Intake and delivery valves are correctly closed during the disassembly E make sure that there i
26. red million cycles For safety reasons in environments with explosion risk it is necessary to disassemble and check the diaphragms every five million cycles and to replace them every twenty mil lion cycles WARNING In the case of diaphragms total breaking the fluid may enter in the pneumatic circuit da mage it and come out from the discharge port Therefore it is necessary to convey the air discharge in a piping up to a safe area WARNING In situations where the user foresees the possibility of exceeding the temperature limits in dicated in this manual it is necessary to install a protection device on the equipment that prevents to achieve the maximum operating temperature allowed If exceeded respect to the maximum marking temperature is not guaranteed REMEMBER Safety risks to persons are mainly caused by improper use or accidental damage These risks may be of hand injury for operators working on the open pump or caused by the nature of the fluids that are conveyed by this type of pump Therefore it is extremely important to diligently carry out all the instructions contained in this manual in order to eliminate the causes of accidents that may lead to the pump failure and to the subsequent outcome of fluid hazardous to persons and to the environment For installation and use in a potentially explosive environment comply with these general precautions e ascertain that the pump is full and if possible that the level is above it
27. s no supply to the pneumatic circuit during the disassembly It should be noted that it is very important to realize systems with pipes well arranged identifiable suitably equipped with shut off valves with comfortable compartments and passages for operators who must inspect their status since the 19 pressure developed by the pump may promote failures to the system if it is of defective construction or worn OPERATORS FOR INSTALLATION AND START UP interventions to be carried out only by skilled personnel who may delegate to others some operations in accordance with specific evaluations required technical skills plumbing pneumatic and or electric qualification as appropriate OPERATORS FOR USE AND MAINTENANCE interventions to be carried out by generic operators after being instructed on the correct use of the equipment pump start up stop valves opening closing with stopped pump Casing emptying and washing by means of the prearranged valves and pipes filtering elements cleaning interventions to be carried out by skilled personnel required technical skills general knowledge of the mechanical electrical chemical aspects of the equipment supplied by the pump and of the pump itself environmental conditions check pumped fluid conditions check inspections of start up stop devices detection of malfunctions OPERATORS FOR REPAIR work to be carried out by generic operators supervised by skilled personnel pump
28. thing cable DANGER OF EXPLOSION AND OR FIRE WARNING The pumps must always be grounded irrespective of any organ to which it is connected Lack of groun ding or incorrect grounding will cancel the requirements for safety and protection against the risk of explosion 15 START UP check the correct execution of what indicated the INSTALLATION paragraph e Check that the intake and delivery pipes of the hydraulic circuit are correctly connected open the intake and delivery valves of the pump hydraulic circuit Open the 3 way valve on the air circuit set operation point requested for the pump properly adjust the air pressure and delivery that supplies the pump With pressure values under 2 bar the pump may stall with pressure values above 7 bar it is possible that brea kdowns and or yields may occur with consequent spillage of the pumped fluid for pumps with split manifold the two pumped fluids must have the same viscosity value very different viscosity values may lead to stall problems and or diaphragms breaking donot operate at the limits of the operation curves the maximum head or maximum delivery total absence of leaks and intake height in the delivery circuit check that there are no anomalous vibrations or noise due to the too elastic support structure unsuitable fastening or cavitation e after 2 hours of operation stop the pump correctly and check the tightening of all the bolts on the pump USE
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