Dropsa Gearpump
Contents
1. DropsA By pass Standard By pass Assembly Motor power Voltage Flow rate Dimensions Line setting setting litres min 5 5 Size kW rpm A B C D has 3404023 56 0 09 500 220 380V 50 Hz 0 35 205 156 110 38 2 3404022 56 0 09 500 220 380V 50 Hz 0 50 205 156 110 40 E 2 01 2 20 5 with 3404026 56 0 06 500 110 V 50 Hz 0 35 205 156 110 38 B 2 non 3404046 56 0 06 500 110 V 50 Hz 0 50 205 156 110 40 c retum 3405099 56 0 09 500 220 380V 50 Hz 0 35 205 156 110 38 US valve 3405101 56 0 09 500 220 380V 50 Hz 0 50 205 156 110 40 26 25 80 bar 70 bar 3405121 56 0 06 500 110 V 50 Hz 0 35 205 156 110 38 3415122 56 0 06 500 110V 50 Hz 0 50 205 156 110 40 z with 3405098 56 0 12 500 220 380V 50 Hz 0 35 187 156 110 38 E release 3405100 56 0 12 500 220 380V 50 Hz 0 50 187 156 110 40 2 2 04 06 25 80 bar 50 bar valve 3405123 56 0 06 500 110 V 50 Hz 0 35 205 156 110 38 3405124 56 0 06 500 110 V 50 Hz 0 50 205 156 110 40 This assembly is composed of a gear pump an electric motor a manometer and a valve block Thanks to a by pass it is possible to regulate the working pressure in accordance with the requirements of the system to which the pump is connected Also included in the valve block is a non return valve or alternatively a release valve so that it can be adapted for use with the d2. Part N bar NO NC 1 10 3291028 3291031 10 20 3291034 3291035 20 50 3291022 3291021 Control panel DESCRIPTION Part N It is also possible to supply as an accessory to the pump a control panel Single phase 1639077 plastic called a VIP which permits the controlling of the various operating 1639081 sheet metal parameters pressure switch and level alarms work and pause cycles 3 phase 1639087 1639089 e Suction filter assembly Part N 3088053 Part N 3088054 Part N 3088055 Part N 3088056 length 165 mm length 80 mm length 415 mm length 130 mm 2 0 TECHNICAL SPECIFICATIONS 2 1 Electrical diagram 2 2 Hydraulic diagram C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 3 of 10 3 0 3 1 CORRECT USE Putting into service Damage to the power supply cable and housing could result in contact with high voltage live parts and hence be a danger to life 999 carefully check the integrity of the power supply cable and the unit before use In the event of there being damage to the power supply cable or the unit DO NOT put the system into service Replace the damaged power supply cable with a new one The unit can be opened and repaired ONLY by qualified personnel In order to prevent dangers of electric shock due to direct or indirect contact with live parts it is necessary that the electrical power supply line is adequately protected by a suitable differential magneto thermal c
3. 115 148 118 306 9 95 iit 32 63 87 60 58 140 23 3410113 3 5 0 25 20 8 7 1 4 130 167 ps 333 9 10 129 32 6 87 60 58 160 23 3410115 5 5 0 25 13 10 6 3 8 30 167 148 355 9 10 129 42 85 123 80 78 160 23 3410117 5 5 0 55 29 131 3 8 65 187 159 392 30 149 42 85 123 80 78 200 28 3410119 10 0 25 7 106 38 130 167 148 355 9 110 129 22 85 123 80 78 160 23 3410121 10 0 55 15 13 1 3 8 165 187 159 392 1 130 149 42 85 123 80 78 200 28 3410123 19 0 55 8 16 12 65 187 204 439 1 40 149 53 104 15 2 90 86 200 28 3410125 19 0 75 11 17 5 1 2 165 187 204 439 1 140 149 53 104 152 90 86 200 28 3410127 26 0 75 8 20 3 4 165 187 218 455 1 50 149 59 117 189 108 102 5 200 28 3410129 26 11 12 25 5 34 165 210 218 477 50 172 59 117 189 108 1025 200 28 3410131 32 0 75 6 20 34 165 187 218 455 1 50 149 59 117 189 108 1025 200 28 3410133 32 1 1 10 255 34 165 210 218 477 11 50 172 59 117 189 108 102 5 200 28 3410135 45 11 7 29 1 65 212 238 5 49451 11 55 172 655 138 5 22 5 130 113 200 28 3410137 45 22 15 49 1 215 236 248 5 570 3 70 196 65 5 1385 225 130 113 250 33 3410139 60 22 11 52 1
4. 102 5 2 90 200 28 3410126 26 0 75 8 19 5 3 4 165 87 451 214 150 49 59 113 8 9 108 200 28 3410128 26 1 1 12 25 3 4 165 210 473 214 150 72 159 113 8 9 108 200 28 3410130 32 0 75 6 19 5 3 4 165 87 451 214 150 49 59 113 8 9 108 200 28 3410132 32 1 1 10 25 3 4 165 210 473 214 150 72 59 113 8 9 108 200 28 3410134 45 1 1 i 28 5 1 165 212 494 5 239 5 1 155 72 65 5 138 5 22 5 130 200 28 3410136 45 22 15 48 5 1 215 236 570 248 5 3 170 196 65 5 138 5 22 5 130 250 33 3410138 60 22 11 51 5 1 215 236 570 248 5 3 170 196 65 5 138 5 22 5 130 250 33 3410140 60 30 15 54 7 1 215 236 570 248 5 3 170 196 65 5 138 5 22 5 130 250 33 sU sG N FORATURA SERBATOIO CON BY PASS SENZA BY PASS eI SPIRAZ H QUOTE NON UNIFICATE LA TENSIONE DEL MOTORE DEVE ESSERE SEMPRE INDICATA IN FASE D ORDINE TANK DRILLING NON STANDARD DIMENSIONS SUCTION DELIVERY THE MOTOR VOLTAGE MUST ALWAYS BE STATED AT THE TIME OF ORDERING C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 10 of 13 WITH BY PASS Assembly litres Power Press Wt gas FAUT E max Kg D Dimensions in mm bar g l y 3410111 2 0 185 26 8 7 1 4
5. 120 100 3410020 45 0 25 20 87 1 4 90 140 173 126 333 71 7 9 129 32 63 8 7 60 12 58 136 110 3410033 5 5 0 25 13 10 6 3 8 90 150 173 148 355 71 9 129 42 85 123 80 12 78 136 110 3410021 5 5 0 55 29 13 1 3 8 00 166 192 159 392 80 9 10 149 42 85 12 3 80 25 78 155 25 3410034 10 0 25 T 10 6 3 8 90 150 173 148 355 71 7 9 129 42 85 12 3 80 12 78 136 110 3410022 10 0 55 15 13 1 3 8 00 166 192 159 392 80 9 10 149 42 85 12 3 80 25 78 155 25 3410035 19 0 55 8 16 1 2 00 203 192 206 439 80 9 10 149 53 104 15 2 98 25 86 155 25 3410023 19 0 75 11 17 5 1 2 00 203 192 206 439 80 9 10 149 53 104 15 2 98 25 86 155 25 3410036 26 0 75 8 20 3 4 00 210 192 222 455 80 9 10 149 59 117 18 9 116 25 102 5 155 25 3410024 26 1 1 12 25 5 3 4 00 216 216 222 477 90 9 11 172 39 117 18 9 116 40 102 5 174 28 3410037 32 0 75 6 20 3 4 00 210 192 222 455 80 9 10 149 59 117 18 9 116 25 102 5 155 25 3410025 32 1 1 10 25 5 3 4 00 216 216 222 477 90 9 11 172 59 117 18 9 116 40 102 5 174 28 3410038 45 1 1 7 29 1 00 222 5 216 239 5 494 5 90 9 11 172 65 5 138 5 22 5 140 40 113 174 28 3410026 45 22 15 49 1 40 238 5 238 248 5 570 100 12 12 196 65 5 138 5 22 5 140 60 113 196 70 3410067 60 22 11 52 1 40 238 5 238 248 5 570 100 12 12 196 65 5 138 5 22 5 140 60 113 196 70 3410069 60 3 15 55 2 1 40 238 5 238 248 5 570 100 12 12 196 65 5 138 5 22 5 140
6. 210 192 451 218 E 80 9 0 49 59 113 189 116 125 55 125 3410016 26 11 12 25 3 4 100 216 216 473 218 90 9 1 7 59 13 189 116 140 z 74 128 3410031 32 0 75 6 95 3 4 100 210 192 451 218 z 80 9 0 49 ss 113 189 116 125 z 55 125 3410017 32 11 10 25 3 4 100 216 216 473 218 E 90 9 1 7 59 13 189 140 140 i 74 128 3410032 45 11 7 285 1 00 2225 216 4945 2395 90 9 1 72 655 385 225 140 140 2 74 128 3410018 45 22 15 485 1 40 2385 238 570 2485 100 12 2 96 655 1385 225 140 160 z 96 170 3410066 60 22 TI 3157 1 40 2385 238 570 2485 100 12 2 96 655 1385 225 160 160 96 170 2 VISTA DA X 96 70 cee a 11 SENZA BY PASS 12 CON BY PASS QUOTE NON UNIFICATE LA TENSIONE DEL MOTORE DEVE ESSERE SEMPRE INDICATA IN FASE D ORDINE SUCTION VIEW FROM X DELIVERY NON STANDARD DIMENSIONS THE MOTOR VOLTAGE MUST ALWAYS BE STATED AT THE TIME OF ORDERING C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 11 of 13 WITH BY PASS Assembly litres Power Pres Wt gas Part N kW max Kg D A Dar Dimensions in mm E F G K I Y ID Q R S D U V 3410019 2 0 185 26 87 1 4 80 127 155 118 306 63 8 111 32 63 8 7 60 00 58
7. 215 236 248 5 570 3 70 196 65 5 1385 225 130 113 250 33 3410141 60 3 15 552 1 215 236 248 5 570 3 70 196 65 5 138 5 225 130 113 250 33 Vertical or horizontal application motor driven pumps motor type B3 B14 4 pole Pressure 30 60 bar WITHOUT BY PASS Assembly litres Power Press Wt gas a N max Kg D Dimensions in mm bar mI Tsh vy 3410011 2 0 185 26 86 ya 80 127 155 306 118 63 7 8 32 6 87 60 00 z 20 100 3410012 3 5 0 25 20 86 ya 90 140 13 333 126 71 7 9 2 2 6 7 60 12 z 36 10 3410027 55 0 25 13 0 4 3 90 150 173 355 148 7i 7 9 29 42 85 23 80 12 z 36 10 3410013 5 5 0 55 29 29 3 8 100 166 192 392 159 5 80 9 0 49 42 85 23 80 25 z 55 125 3410028 10 0 25 7 04 3 8 90 150 173 355 148 71 7 9 2 42 85 23 80 12 2 36 10 3410014 10 0 55 15 29 3 8 100 166 192 392 159 80 9 0 49 42 85 23 80 25 B 55 125 3410029 19 0 55 8 57 1 2 100 203 192 437 204 80 9 0 49 53 102 152 98 25 55 125 3410015 19 0 75 72 1 2 100 203 192 437 204 80 9 0 49 53 102 152 98 25 z 55 125 3410030 26 0 75 8 9 5 3 4 100
8. 60 113 196 70 C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 12 of 13 CE Declaration Of Conformity Manufacturer DROPSA SpA Company Via Croce 1 20090 Vimodrone Italy Address 39 02 250791 Telephone It is certified that The machine Motor driven gear pump type 3410 is manufactured in conformity with the DIRECTIVE OF THE COUNCIL OF THE EUROPEAN COMMUNITY concerning the harmonisation of member states legislation relative to machines 98 37 CE 91 368 CEE EMC 89 336 CEE and BT 73 23 CEE and relative amendments is manufactured in accordance with the following standards and harmonised technical specifications EN 292 1 EN 292 2 EN 50081 2 EN 50082 2 CEI EN 60204 1 EN 1050 Technical Manager Ing Walter Divisi Product Manager Name DROPSASpA Vimodrone MI Italy Company a Ta January 1999 Signatu Date DROPSA SPA DISTRIBUTORS ITALY U S A BRAZIL AUSTRALIA Dropsa SpA Dropsa Corporation Dropsa Dropsa Australia Ltd t 39 02 250791 t 1 586 566 1540 t 55 011 563 10007 t 61 02 9938 6644 f 39 02 25079767 f 1 586 566 1541 f 55 011 563 19408 f 61 02 9938 6611 SPAIN U K GERMANY FRANCE Polydrop S A Dropsa UK Ltd Dropsa Gmbh Dropsa Ame t 34 93 260 22 50 t 44 01784 431177 t 49 0211 394 011 t 33 01 3993 0033 f 34 93 260 22 51 f 44 01784 438598 f 49 0211 394 013 f 33 01 3986 2636
9. pumps for low flow rates can also be supplied assembled to the motors 3 sizes are available 0 35 0 5 1 2 litres min at 1500 rpm The direction of rotation 1s indifferent simply invert the suction and delivery tubes The service can be either continuous or intermittent The following standard power supplies are provided for e 220 380 V 50 Hz e 240 440 V 60 Hz e 415V _ 50 Hz Other voltages and frequencies are available on request The motors have IP55 grade protection In addition it is possible to order separately a suction filter c w dip tube 400 mesh cm filtering grade 260 of an overall length of between 100 and 455 mm depending on the needs of different installations These gear pumps are suitable for operating with oils of a viscosity between 150 and 1000 cSt at fluid working temperatures in the range of 20 100 The maximum useful pressure in intermittent service is 80 bar for this the design rotation speed of the pump is 1500 or 3000 rpm C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 2 of 10 e S M4 Assembly Part N Flow rate in a 26 a litres min P a Pump for Pump in tank a 1500 rpm external 3099127 3099129 0 35 38 3099004 3099130 0 5 40 3099131 3099133 1 2 47 NT 6 2AUNE 7 7 6 2AUNE o Dt ATA amp SP IRAZION r MANO SUCTION DELIVERY 1 2 Accessories Pressure switch DESCRIPTION
10. INSTRUCTIONS FOR USE SERIES Motor driven gear pumps 341 In accordance with point 1 7 4 to Dir 98 37 CE 3400000 Sections 0 0 INTRODUCTION E i 10 DESCRIPTION OF THE PUMP m ro f 20 TECHNICALSPECIFICATIONS jal TM Ji 3 0 CORRECT USE 35 _ E 4 4 0 INSTRUCTIONS FOR ORDERING p eds AND LIST OF DISTRIBUTORS m DECLARATION OF CONFORMITY Catalogue P N C2010IE Wk 23 02 Registered name DROPSA SpA Address via Croce 1 20090 Vimodrone MD Italy Model Motor driven gear pump 3410 Year of manufacture 1999 Marking CE 0 0 INTRODUCTION This user s and maintenance manual refers to motor driven gear pumps for use in mineral oil lubrication systems It is recommended that this manual is carefully kept in good condition and is always available to persons requiring to consult it To request further copies updates or clarifications with respect to this manual contact the Engineering Department at Dropsa SpA The use of the pump referred to in this manual must be entrusted to qualified personnel with a knowledge of hydraulics and electrical systems The manufacturer reserves the right to update the product and or the user s manual without the obligation to revise previous versions It is however possible to contact the Engineering Department for the latest revision in use The pump and any accessories mounted on it should be carefully checked im
11. e Disassemble the valve and clean or replace it as necessary 3 8 Dangers present in use The verification of conformity with the essential safety requirements and regulations of the Machine Directive is effected by means of the compilation of a check list which has been pre prepared and is contained in the technical file The lists which are utilised are of three types list of dangers as in EN 414 referring to EN 292 application of essential safety requirements Machine Dir 1 part 1 electrical safety requirements EN 60204 1 The following is a list of dangers which have not been fully eliminated but which are considered acceptable it is possible to encounter squirts of oil for this reason appropriate protective clothing must be worn contact with oil gt see the requirements for the use of suitable personal protective clothing use of unsuitable lubricant gt the characteristics of the fluid are shown on the pump and in the manual in case of doubt contact the Eng Dept of Dropsa Spa protection against direct and indirect contact must be provided by the user given the purpose of the pump it must always be functioning for this reason it is necessary to pay attention to the electrical connections which in the case of a power failure the customer s machine is restarted only by means of a reset while the lubrication pump is able to restart INADMISSIBLE FLUIDS Fluid Lubricants with abra
12. ifferent DROPSA systems line 01 line 26 lines 04 06 or on other systems of a similar nature It is also possible to order separately an intake filter with a dip tube 400 mesh cm2 filtering grade 260 of an overall length variable between 100 and 455 mm depending on the differing requirements of the installation THE MOTOR VOLTAGE MUST ALWAYS BE STATED AT THE TIME OF ORDERING Pressure regulating screw SUCTION Vertical or horizontal application motor driven pumps motor type B5 4 pole Pressure 30 60 bar WITHOUT BY PASS Assembly litres Power Press Wt gas Part N kW max Kg D 5 iom Dimensions in mm E G H K I L M N Q R ili U V 3410110 2 0 185 26 8 6 1 4 115 48 306 118 9 95 11 32 63 8 7 60 140 23 3410112 3 5 0 25 20 8 6 1 4 130 67 333 126 9 110 29 32 63 8 7 60 160 23 3410114 5 5 0 25 13 10 4 3 8 130 67 355 148 9 110 29 42 85 2 3 80 160 23 341016 5 5 0 55 29 12 9 3 8 165 87 392 159 130 49 42 85 2 3 80 200 28 3410118 10 0 25 7 10 4 3 8 130 67 355 148 9 110 29 42 85 2 3 80 160 23 3410120 10 0 55 15 12 9 3 8 165 87 392 159 130 49 42 85 2 3 80 200 28 3410122 19 0 55 8 15 7 V2 165 87 437 202 140 49 53 102 5 2 90 200 28 3410124 19 0 75 11 172 1 2 165 87 437 202 140 49 53
13. ircuit breaker with an intervention threshold of 0 03 Ampere and a max operating time of 1 second The breaking capacity of the circuit breaker must be 10 kA and the nominal current In 6 A The pump MUST NOT be submersed in fluids or utilised in environments which are particularly aggressive or explosive inflammable if not prepared for this purpose beforehand by the supplier For correct fixing verify the distance between centres shown in the diagram in Figure Use gloves and safety glasses as required in the lubrication oil safety chart DO NOT use aggressive lubricants with NBR gaskets and seals if in doubt consult the Engineering Department of Dropsa SpA who will provide a chart with the details of recommended oils DO NOT ignore dangers to health and observe all hygiene standards WARNING All electrical components must be grounded This refers to both electrical components and control devices In this regard ensure that the ground cable is correctly connected For reasons of safety the ground cable must be approx 100 mm longer than the phase cables In the event of accidental detachment of the cable the ground terminal must be the last to be removed Action to be taken prior to start up 32 3 3 Verify the integrity of the pump Fill the tank with suitable lubricant min max indication on the tank Verify that the pump is at operating temperature and the tubing free from air bubbles Check that the electrical connectio
14. is the high degree of silentness in operation obtained with the use of gears specially designed for this type of unit Also thanks to particularly precise machining and finishing a significant improvement has been achieved in efficiencies compared to all previous similar models produced To ensure an external seal the pumps have an O ring located between the pump body and the relative cover in addition to a lip seal on the main shaft The body of the pump is produced in hydraulic cast iron and the gears and relative shafts in chrome nickel steel carburized hardened and ground The body of the low flow rate pump up to 500 cc min is made of sintered steel the shafts and gears in carburized and hardened steel with a seal on the main shaft WARNING For all the motor driven pumps we have shown the applied power to the motors in function of the maximum pressure demand indicated in the table For higher pressures the motor must be suitably sized accordingly to obtain a quotation state the voltage the maximum operating pressure and if the service will be continuous or intermittent Max pressure 30 bar for continuous service max pressure 60 bar for intermittent service Working temperature of the fluid 20 100 degrees with low to medium velocity oil On request flameproof motors can be supplied in various voltages Request availability from Dropsa SpA 1 1 Gear pumps for low flow rates with pressures of 30 80 bar Gear
15. mediately on receipt and in the event of any discrepancy or complaint the Dropsa SpA Sales Department should be contacted without delay DROPSA S p A declines to accept any responsibility for injuries to persons or damage to property in the event of the non observance of the information presented in this manual Any modification to component parts of the system or the different destination of use of this system or its parts without prior written authorisation from DROPSA S p A will absolve the latter from any responsibility for injury or damage to persons and or property and will release them from all obligations arising from the guarantee Instructions for the correct ordering of the required model and a list of importers is shown in Section 4 1 0 DESCRIPTION OF THE PUMPS These new pump units have been designed as the result of over thirty years experience in the field of developing and manufacturing gear pumps The application possibilities are numerous the pumps are self lubricating and are able to operate with oils or any other fluid with proven lubricating capacity These pumps can therefore be utilised in the fields of lubrication refrigeration hydraulics and more generally for the circulation of fluids for machines motors and linear motion applications these units can also be employed on recirculating systems without the need for particularly fine filtering of the circulation fluid One of the most striking features of these pumps
16. ns have been effected correctly CEI 64 8 IEC 364 Verify the correct connections of the level and any pressure switch to the control panel On starting the pump check that the direction of rotation of the electric motor if rotating in the wrong direction invert the cable connections 9999 Use verify the settings made press the start button of the machine to which the pump is connected verify the starting of the pump verify the adequate lubrication of the machine if doubt exists as to the correct functioning consult the Engineering Department of Dropsa SpA to request test procedures Transport and storage Transport and storage is effected in a cardboard package No particular precautions are required except as noted on the package itself handling can be effected by one person Lift the unit with taking account of the right way up indicated on the cardboard carton The machine components can withstand temperatures during storage from 20 to 50 C however in order to avoid damage starting of the machine should occur at a minimum temperature of 5 C C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 4 of 10 3 4 Assembly Disassembly No pump assembly operations are envisaged For wall mounting ensure adequate space is available as shown in the installation diagram to avoid abnormal postures and possible impacts four fixing holes are provided with different characteristics depending on
17. sive additives High wear rate of contacted parts Lubricants with silicone based additives Seizure of the pump Petrol solvents inflammable liquids Fire explosion damage to seals Corrosive products Corrosion of the pump injury to persons Water Oxidation of the pump C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 6 of 10 Food substances Contamination of the substances themselves C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 7 of 10 Gear pumps for low flow rates with pressures of 30 80 bar Assembly Motor power Flow rate Weight Part N litres min Kg Dimensions in mm size kW rpm A B D E G H L M N B R 3405000 56 0 09 1500 0 50 3 7 171 137 104 56 80 65 56 5 5 71 90 6 106 36 3406000 63 0 25 3000 1 00 5 5 194 153 119 56 90 75 58 5 5 3407000 63 0 185 1500 0 50 5 5 194 153 119 56 90 75 58 5 5 3402002 56 0 09 1500 0 35 3 7 171 137 104 54 80 65 56 5 5 71 90 6 106 36 3402006 56 0 09 1800 0 41 3 7 171 137 104 54 80 65 56 5 5 71 90 6 106 36 3405079 56 0 09 1500 0 50 3 7 171 137 104 56 80 65 56 5 5 3407003 63 0 185 1800 0 41 5 5 194 153 119 54 90 75 58 5 5 This assembly consists only of the motor and the gear pump
18. the version Subsequently it will be necessary as previously described to connect the pump to the machine hydraulically and then to connect the control panel During the disassembly phase ensure the tank is empty Disconnect the electrical and hydraulic parts Where the machine is to be scrapped do not dispose of potentially polluting parts in the environment following local regulations for their correct disposal At the time of the machine being scrapped it is necessary to remove and destroy the identification plate and all other relative documents 3 5 Regulation The only parameter which can be modified is the pressure 3 6 Maintenance Locate the machine in conditions which facilitate easy access Utilise individual protection to avoid contact with mineral oil or grease Periodically it is necessary to check VERIFICATION WORK CYCLE The state of lubrication 1000 The oil level 2000 Cleanliness of the filling and intake filter 4000 Clean the tank of any deposits on the bottom 6000 The machine does not require any special tools to carry out checks or maintenance tasks However it is recommended that only tools suitable for the tasks and in good condition should be utilised DPR 547 55 to avoid injury to persons or damage to machine parts 3 7 Repairs The following diagnostic table indicates the main anomalies which may be encountered the probable causes and possible solutions The anomalies shown are e the pump fails
19. to deliver sufficient oil or no oil at all e the pump fails to deliver oil at the prescribed pressure e failure to effect lubrication cycle In case of doubts and or problems which cannot be resolved do not attempt to disassemble parts of the machine but contact the Engineering Department of DROPSA S p A C2010IE Motor driven pump 31040 Rev 1 Jun 02 Page 5 of 10 DIAGNOSTIC TABLE INDICATION PROBABLE CAUSE REMEDY The pump does not deliver oil or e Drawing in air due to the tank e Refill the tank and purge air does not deliver oil in the exact being empty from the system quantity prescribed e intake filter is dirty or e Wash the filter in petrol and blocked blow it through with compressed air e internal connections are e Tighten all connections ensuring loose there are no leakages e Pump has deteriorated e Replace the pump e Pressure regulating valve loose Tighten the regulating screw so the oil returns immediately to until oil exits from the delivery the tank before flowing through the delivery valve e Release valve damaged e Replace the valve e Incorrect setting of the e To the pump outlet connect a The pump does not deliver oil at regulating valve tube approximately 30cm long the prescribed pressure with a manometer connected to the free end Regulate the valve by means of turning the screw and reading the corresponding pressure value on the e Presence of dirt under the by manometer pass valve
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