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Troubleshooting

Type of fault

BA-10010-02-V01

Solenoid-diaphragm dosing pump

MAGDOS LA / LD

Operating instructions

13.1.3 Delivery rate varies

Possible cause

Remedy

Valve leaking or blocked

Clean the valve and vent the
dosing pump.

Tighten the screw connections.

Valve damaged (e.g. valve
balls)

Remove the damaged parts or
install a new valve.

Suction line is leaking

Seal the leak locations or replace
the parts.

Suction line is blocked (e.g.
screen in foot valve)

Clean the suction line.

Viscosity too high

Possibly reduce the concentration
of the dosing medium or increase
the temperature.

Install spring-loaded valves.

Increase the pipe diameter.

The dosing pump's electrical
data does not match that of
the mains supply

Check the electrical installation.

Suction side pressure too high
(pump siphoning)

Install a back-pressure valve in
the pressure line.

Pressure peaks due to
acceleration with long suction
lines

Install a suction pressure
regulator.

Imprecise dosing due to
changeable positive and
negative suction heads.

Install a suction pressure
regulator.

System backpressure too
high (measured at discharge
connection of dosing pump)

Clean blocked injection nozzle.

Install pulsation dampeners to
reduce pressure peaks if pipes
are too long.

Check function of safety valves.

Table 29: Type of fault: Delivery rate varies

13.1.4 No stroke movement observed

Possible cause

Remedy

Diaphragm return spring
broken.

Contact the manufacturer.

Current supply interrupted

Reconnect the current supply

The dosing pump's electrical
data does not match that of
the mains supply

Check the electrical installation.

Pressure peaks due to
acceleration with long suction
lines

Install a suction pressure
regulator.

Table 30: Type of fault: No stroke movement observed

Possible cause

Remedy

System backpressure too
high (measured at discharge
connection of dosing pump)

Clean blocked injection nozzle.

Install pulsation dampeners to
reduce pressure peaks if pipes
are too long.

Check function of safety valves.

Table 30: Type of fault: No stroke movement observed

13.1.5 Dosing pump delivery rate too high

Possible cause

Remedy

Suction side pressure too high
(pump siphoning)

Install a back-pressure valve in
the pressure line.

Pressure peaks due to
acceleration with long suction
lines

Install a suction pressure
regulator.

Table 31: Type of fault: Dosing pump delivery rate too high

13.1.6 Diaphragm is torn or tears too often

Possible cause

Remedy

Shut-off valves closed

Open the shut-off valves. Inspect
the dosing pump for possible
damage.

Pressure peaks due to
acceleration with long suction
lines

Install a suction pressure
regulator.

The materials are not suitable
for the dosing medium being
used

Check the resistance of the
materials.

Diaphragm not screwed up to
the end stop on the dia-
phragm rod

Screw a new diaphragm up to the
end stop.

System backpressure too
high (measured at discharge
connection of dosing pump)

Clean blocked injection nozzle.

Install pulsation dampeners to
reduce pressure peaks if pipes
are too long.

Check function of safety valves.

Media sediment in dosing
head

Clean the dosing head.

Table 32: Type of fault: Diaphragm is torn or tears too often

13.1.7 Loud noises on the dosing pump

Possible cause

Remedy

The drive magnet's stop
damper is worn-out

Contact the manufacturer.

Table 33: Type of fault: Loud noises on the dosing pump

Содержание MAGDOS LA

Страница 1: ...Systems Original operating instructions Lutz Jesco GmbH 2017 BA 10010 02 V01 Solenoid diaphragm dosing pump MAGDOS LA LD Operating instructions Read the operating manual The user is responsible for installation and operation related mistakes ...

Страница 2: ......

Страница 3: ...ad made of PVC PP or PVDF 15 6 2 MAGDOS with dosing head made of stainless steel 1 4571 15 7 Installing the Dosing Pump 16 7 1 Set up information 16 7 2 Installation examples 16 8 Hydraulic installations 17 8 1 Design of the system 17 8 2 System piping 17 8 3 Aligning the dosing head 18 8 4 Hydraulic connections 18 8 5 Connecting a leakage drain 19 8 6 Connecting the dosing head venting facility 1...

Страница 4: ...perating manual Signal words illustrate the gravity of possible injuries if the risk is ignored Signal word Meaning DANGER Refers to imminent danger Ignoring this sign may lead to death or the most serious injuries WARNING Refers to a potentially hazardous situation Failure to follow this instruction may lead to death or severe injuries CAUTION Refers to a potentially hazardous situation Failure t...

Страница 5: ...ion This is how pre conditions for action are identified ü Pre condition for action which must be met before taking action A resource such as a tool or auxiliary materials required to perform the operating instructions This is how instructions for action are identified è Separate step with no follow up action 1 First step in a series of steps 2 Second step in a series of steps 4 Result of the abov...

Страница 6: ... may leak ð Make sure that the materials you are using are suitable for the dosing medium ð Make sure that the lubricants adhesives sealants etc that you use are suitable for the dosing medium WARNING Caustic burns or other burns through dosing media While working on the dosing head valves and connections you may come into contact with dosing media ð Use sufficient personal protective equipment ð ...

Страница 7: ...dards and legislation 2 4 Personal protective equipment Based on the degree of risk posed by the dosing medium and the type of work you are carrying out you must use corresponding protective equipment Read the Accident Prevention Regulations and the Safety Data Sheets to the dosing media find out what protective equipment you need You will require the minimum of the following personal protective e...

Страница 8: ...s 2 5 2 Trained persons Trained persons have received training from the operator about the tasks they are to perform and about the dangers stemming from improper behaviour In the table below you can check what qualifications are the pre condi tion for the respective tasks Only people with appropriate qualifications are allowed to perform these tasks Qualification Activities Specialist staff n Asse...

Страница 9: ...osing pump refer to the chapter 15 Delivery characteristic curves on page 38 n Comply with the information regarding the operating and environmen tal conditions see chapter Technical data n Any restrictions regarding the viscosity temperature and density of dosing media must be followed You must only use dosing media at temperatures above freezing point or below the boiling point of the respective...

Страница 10: ... operational disturbances n Elimination of operational disturbances by personnel without adequate qualifications n Deposits in the dosing head due to inadequate purging particularly with suspensions n Bridging the external fuse n Operation made more difficult due to inadequate lighting or machines that are difficult to access n Operation not possible due to dirty or illegible display of the dosing...

Страница 11: ...g A coded 4 2 Scope of delivery Please compare the delivery note with the scope of delivery The following items are part of the scope of delivery n Dosing pump MAGDOS LA LD n One set each of hose clamping connections for the suction and discharge sides for hoses with diameters of 4 6 mm 6 9 mm and 6 12 mm made of PVC PP and PVDF n Covering caps electrical connections n 2 conductive rubber bands fo...

Страница 12: ...flows from the suction line into the dosing head If the dosing pump is in the pressure stroke phase the diaphragm is moved into the front final position Due to the pressure in the dosing head the suction valve closes and the dosing medium flows through the pressure valve from the dosing head into the pressurised pipe 4 5 Rating plate There is information on the equipment about safety or the produc...

Страница 13: ...5 ml stroke 0 08 0 08 0 24 0 35 0 63 0 92 1 Average delivery pressure bar 8 4 3 1 Max stroke frequency rpm 120 250 160 180 250 Suction height for non gassing media with a filled suction line mWS 5 3 2 Table 10 Output data 5 2 Operating conditions and limits Information Value MAGDOS LA LD Size 05 15 Approved ambient temperature C 5 45 with PVC components 5 40 Relative humidity max 90 Max sound pres...

Страница 14: ...LA LD Size 05 1 2 4 6 10 15 Voltage supply 230 V AC 10 50 60 Hz or 115 V AC 10 50 60 Hz see rating plate Power consumption W 10 15 21 27 28 29 26 Max current consumption during dosing stroke A 2 0 3 0 3 7 3 8 4 1 3 6 Table 13 Electrical specifications 5 5 Other data Information Value MAGDOS LA LD Size 05 1 2 4 6 10 15 Weight dosing head made of PVC PP PVDF kg 3 2 approx Weight dosing head made of ...

Страница 15: ...head made of PVC PP or PVDF all dimensions in mm Connection Material Scale Nominal width L Hose clamp connector PVC PP PVDF 4 6 mm DN4 31 1 4 x 3 8 1 4 34 6 9 mm DN6 34 6 12 mm DN6 15 6 2 MAGDOS with dosing head made of stainless steel 1 4571 Fig 6 Dimensioned drawing of MAGDOS LA LD with dosing head made of stainless steel 1 4571 all dimensions in mm Connection Material Scale Nominal width L Hose...

Страница 16: ...here must be enough free space in the area of the dosing head and the suction and pressure valves for these parts to be easily dismantled if required The entire space requirement for installation and maintenance is approximately 1 m n The distance from the sides of the dosing pump to the wall or other dosing pumps or equipment must be at least 3 cm There must be a guaranteed flow of circulating ai...

Страница 17: ...rts particularly those made of PVC that are bolted together in a detachable connection e g the dosing head and the valves can lock This makes them difficult to release ð Before bolting grease the corresponding parts with a lubricant e g PTFE spray Ensure that the lubricant is compatible with the dosing medium 8 1 Design of the system n The dosing pump s technical data must be taken into account an...

Страница 18: ...nnecting piece e to the dosing pump s valve using the 2 4 Thread the union nut 3 and the clamping ring 4 onto the hose 5 Plug the hose all the way in to the grommet of connection piece 6 Push the clamping ring onto the grommet of connection piece and screw it to the union nut 7 Carry out the same procedure with the connection to the dosing pump s other valve ü Hose clip connected 8 4 1 2 Size 6 12...

Страница 19: ...t you must re tighten the screw connection before carrying out commissioning 8 5 Connecting a leakage drain Lutz Jesco GmbH dosing pumps are produced to the highest of quality standards with a long service life However some parts are subject to operational wear This is the case particularly with the diaphragms that are continuously subjected to forces during the suction and discharge strokes and t...

Страница 20: ...lock At an appropriate pressure a pressure relief valve opens a bypass line and protects the system in this way from damage caused by over pres sure Notes on assembly n The line for returning dosing medium from the pressure relief valve must be routed to the dosing tank or to a collecting pan n The pressure in the dosing tank must not be too high so that it is possible to accommodate the returned ...

Страница 21: ...p again in good time 8 7 8 Dosing of suspensions When dosing suspensions the dosing head must be rinsed regularly to prevent depositing To do this you install a feed line for the rinsing medium water in the suction side installation 8 7 9 Suction pressure regulator A suction pressure regulator may be necessary if the suction side installation of the system demonstrates a varying suction pressure o...

Страница 22: ...hed protective earth 9 1 Principles n The dosing pump is fitted with a 115 V AC or 230 V AC 50 60 Hz power supply unit n The electrical connection comply with local regulations n The dosing pump must be plugged into a grounded power outlet n To avoid dosing errors at the end of the process the dosing pump must be locked electrically n The dosing pump must not be operated by switching the mains vol...

Страница 23: ... 4 Blue BU 4 External On Off Black BK Table 16 Connection socket 1 Applies to cable colours of cables from Lutz Jesco GmbH No liability is accepted for cables from other manufacturers Removing the conductive rubber band Fig 18 Conductive rubber band in connection socket 1 Remove the conductive rubber band before inserting the cable in the connection socket After the cable has been removed the cond...

Страница 24: ...n port 3 serves the level monitoring of a dosing tank e g a suction line with a level switch n 5 V DC supply voltage current across all connections limited to a total maximum of 50 mA n Alert and main alarm n Potential free contact n Programmable NC or NO contact i A matching connection cable with A coded plug connector is integrated in the suction lines level monitoring systems of Lutz Jesco GmbH...

Страница 25: ...planation of the menu symbols Level monitoring 10 2 2 Operating modes Symbol Meaning Manual mode Analogue input only LA Pulse input only LD Table 22 Explanation of the menu symbols Operating modes 10 2 3 Release input Symbol Meaning Contact open Contact closed Table 23 Explanation of the menu symbols Release input 10 2 4 Release code Symbol Meaning Release code active Table 24 Explanation of the m...

Страница 26: ...nter the code correctly you have 120 seconds in which to operate the dosing pump When the 120 seconds have elapsed you must re enter the code even if you are in the middle of making another entry this does not include settings in the menus Fig 23 4 3 2 1 OK Entering the Release code 1 Use the and keys to set a value from 0 to 9 for the first digit of the code and then press 2 Proceed as described ...

Страница 27: ...hether undesirable reactions could occur between the actual dosing medium and the water Perform the following working steps 1 Open the shut off valves on the suction and discharge sides if present 2 Plug in the dosing pump s mains plug to the power supply 3 If the dosing head is fitted with a vent screw vent the dosing pump see section 11 1 1 Venting the dosing pump on page 27 4 Select an operatin...

Страница 28: ...al mode the frequency and number of strokes issued by the MAGDOS LD dosing pump is controlled in dependence on the pulse frequency and number of pulses applied at the pulse input see section 9 2 1 3 Pulse input only LD on page 24 The MAGDOS LA is controlled via an analogue signal 11 2 2 1 Selecting the operating mode è Press Ext to select the operating mode 4 The dosing pump shows the start displa...

Страница 29: ...per pulse the correspond ing transmission factor can be calculated for the external operating mode i You can find a simple means of performing the necessary calculations on the Lutz Jesco GmbH homepage To do so click on the following link or enter it in your browser http www lutz jesco com en online help If you have no Internet connection you can also perform the calculation yourself The following...

Страница 30: ...o Internet connection you can also perform the calculation yourself Preselection of the dosing pump size You can use the following diagram to determine the necessary size of the dosing pump depending on the intended dosing quantity and the existing or selected pulse sequence of the contact type water meter Comparison with the technical data of the dosing pump with regards to the operating pressure...

Страница 31: ...ulation phase checks the size of the contact type water meter and the maximum stroke frequency of the MAGDOS LD by comparing the required stroke frequency and the maximum stroke frequency of the dosing pump The following additional parameter is required for this n The nominal size of the contact type water meter in cubic metres per hour m h Calculate the necessary stroke frequency using the follow...

Страница 32: ...t depressurized the hydraulic connections or locked to prevent dosing medium from escaping n You must follow the safety data sheet of the dosing medium 11 6 Storage Storing the dosing pump correctly extends its service life You should avoid negative influences such as extreme temperatures high humidity dust chemicals etc Ensure ideal storage conditions where possible n the storage place must be co...

Страница 33: ...en tightened correctly and are leak proof CAUTION Danger of personal injury and material damage The dosing pump can generate a pressure that is many times the rated one The dosing medium can escape in the case of material failure or wear on the dosing head the connection pipe or the seals that are used ð Carry out maintenance work at the recommended intervals 12 1 Maintenance intervals This table ...

Страница 34: ...lange 1 so that the new diaphragm is not affected by dosing medium residues ü The diaphragm 3 thread was lightly greased e g Molycote Longterm W2 1 Screw the diaphragm manually 3 in the clockwise direction until it safely contacts into the diaphragm rod 2 Bring the dosing head into position and insert the screws First tighten the screws finger tight After this tighten the bolts on the diagonal e g...

Страница 35: ...s not match that of the mains supply è Check the electrical installation System backpressure too high measured at discharge connection of dosing pump è Clean blocked injection nozzle è Install pulsation dampeners to reduce pressure peaks if pipes are too long è Check function of safety valves Table 27 Type of fault Dosing pump not delivering or output too low Possible cause Remedy Conductive rubbe...

Страница 36: ...ins supply è Check the electrical installation Pressure peaks due to acceleration with long suction lines è Install a suction pressure regulator Table 30 Type of fault No stroke movement observed Possible cause Remedy System backpressure too high measured at discharge connection of dosing pump è Clean blocked injection nozzle è Install pulsation dampeners to reduce pressure peaks if pipes are too ...

Страница 37: ... No 05 1 39121 2 4 39122 6 10 15 39123 14 2 Dosing head spare parts kits including valves Spare parts set dosing head including screws consisting of n Dosing head item 2 n Valves n 1 set of dosing head screws item 3 PVC Type Part No Ceramic PVDF FPM ball seat seals 05 1 38981 2 4 38982 6 10 15 38983 PP Type Part No Ceramic PVDF FPM ball seat seals 05 1 38978 2 4 38979 6 10 15 38980 PVDF Type Part ...

Страница 38: ...capacities were determined on the manufacturer s test stands They apply at 20 C 68 F for water at 100 stroke frequency The delivery capacity depends on the medium density and viscosity and tempera ture Since these conditions vary at every installation location you should calibrate the dosing pump Fig 32 0 1 2 3 4 5 6 0 2 4 6 8 10 12 14 16 4 2 1 05 Delivery capacity l h Pressure bar Delivery charac...

Страница 39: ...das A presente declaração perde a sua validade em caso de alteração ao equipamento não autorizada por nós EN EC Declaration of Conformity We hereby certify that the device described in the following complies with the relevant fundamental safety and sanitary requirements and the listed EC regulations due to the concept and design of the version sold by us If the device is modified without our conse...

Страница 40: ... for repair Dosing medium Description Irritating Yes No Properties Corrosive Yes No We hereby certify that the product has been cleaned thoroughly inside and outside before returning that it is free from hazardous material i e chemical biological toxic flammable and radioactive material and that the lubricant has been drained If the manufacturer finds it necessary to carry out further cleaning wor...

Страница 41: ...ete warranty claim Sender Company Phone Date Address Contact person Manufacturer order no Date of delivery Device type Serial number Nominal capacity nominal pressure Description of fault Service conditions of the device Point of use system designation Accessories used suction line etc Commissioning date Duty period approx operating hours Please describe the specific installation and enclose a sim...

Страница 42: ...E EC Declaration of Conformity 39 Electrical specifications 14 External On Off via Release input 32 F Foreseeable misuse 9 Function description 12 G General warnings 6 Glue in connection 19 H Handling instructions Marking 5 Hazards due to non compliance with the safety instructions 7 Hydraulic accessories 20 Hydraulic connections 18 Hydraulic installations 17 I Injection nozzle 20 Inputs of the co...

Страница 43: ... staff 8 Start up 22 27 Storage 32 Structure of the dosing pump 11 Suction pressure regulator 21 Suspensions 21 System piping 17 T Technical data 13 Temperatures Approved ambient temperature 13 Approved media temperature 14 Tighten up dosing head bolts 33 Transportation 32 Troubleshooting 35 V Venting 27 Venting the dosing pump 27 W Wall bracket 16 Wall mounting 16 Warnings General warnings 6 Mark...

Страница 44: ... 2 2544 Leobersdorf Austria Tel 43 2256 62180 Fax 43 2256 6218062 E mail info lutz jesco at Website www lutz jesco at Middle East Lutz Jesco Middle East FZE P O Box 9614 SAIF Free Zone Center Sharjah UAE Tel 971 6 5572205 Fax 971 6 5572230 E mail info jescome com Website www jescome com Great Britiain Lutz Jesco GB Ltd Gateway Estate West Midlands Freeport Birmingham B26 3QD Great Britain Tel 44 1...

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