11.6 Diagram of the circuit board MAGDOS LT ..................... 79 12. Spare parts ..............................80 12.1 Spare parts list MAGDOS LT 02 ... 0680 ....................... 81 12.2 Spare parts list MAGDOS LT 1 ........................82 12. Spare parts list MAGDOS LT ...68 ......................85 12. Spare parts list MAGDOS LT 10 ........................
1. Safety 1.1 General This Operation & Maintenance Manual contains basic information to be noted during installation, operation and maintenance. It is therefore essential that the Manual is read by the contractor before installing and commissioning the pump/system as well as by the relevant operating personnel / owner of the pump/system.
1.3 Qualification and training of personnel The personnel employed for installation, operation, inspection and maintenance must be qualified for this work. The areas of responsibility, competence and supervision of the personnel must be precisely defined by the owner. Personnel who do not have the required knowledge must be duly trained and instructed.
The dosing pump may only be modified or converted in consultation with the manufacturer. Genuine spare parts and accessories authorized by the manufacturer ensure greater safety. Liability for damage or loss may be voided if non Lutz-Jesco parts are used. 1.10 Impermissible modes of operation...
1.11 Dosing of Chemicals CAUTION! • When working on dosing systems, the accident prevention regulations applicable on-site must be observed and the specified personal protective equipment worn. The following standard protective clothing is recommended, depending on the hazard as- CAUTION! sociated with the metered medium: Goggles Protective gloves...
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DANGER! • Fire hazard. Pressure surge: parts may be catapulted off and cause fatal injury. In no case is MAGDOS LT supposed to be used in explosive environment. DANGER! CAUTION! • Hot metal parts may burn your hands. Always disconnect the mains power feeder before opening the magnetic drive and let the dosing pump cool for at least one hour.
IMPORTANT! 2. General Dosing pumps are used to add chemicals specifically in various processes. MAGDOS LT can be flexibly used by the user thanks to its universal control system: • external operation with stroke rate input •...
The solenoid coil of the drive solenoid is activated in a pulsating manner by the electronic unit in the MAGDOS LT dosing pump. The solenoid armature forces the diaphragm to the left and displaces the liquid in the dosing head . The liquid escapes through the discharge valve ...
5. Technical data MAGDOS LT Max. pressure* [bar] Flow rate at max. pressure* [l/h] 0.1 0.8 1.5 Medium pressure* [bar] Flow rate at medium pressure* [l/h] 0.28 5.5 10.1 Max. stroke frequency [1/min] Suction lift [m H O] for non-effervescent media Max.
The performance curves refer to water at 20 °C (68 °F). The performance of the dosing pump depends on the viscosity of the process fluid and hydraulic installation conditions. Dosing pumps must therefore be gauged in litres during application. MAGDOS LT 02 ml / pulse MAGDOS LT 06...
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MAGDOS LT 4 ml / pulse MAGDOS LT 6 ml / pulse MAGDOS LT 10 ml / pulse MAGDOS LT 17 ml / pulse...
7. Installation 7.1 General notes of instruction For the selection of a dosing pump when designing a system as well as for the installation and operation, local rules and regulations must be obeyed. This applies to the selection of appropriate materials of construction, the handling of the chemicals and the electrical installation.
The metering pumps has to be plugged into a grounded power outlet. The 20 VAC version of the MAGDOS LT is connected via a grounded appliance plug con- nector. The 115 VAC version is equipped with a UL/CSA plug connector. The 2 VDC version NOTICE! has a 2-wire cable 2 x 1 mm².
7.6 Pressure sustaining and safety valves Pressure sustaining valves are accessories for optimizing the dosing process. They are used • to increase the dosing accuracy in the presence of fluctuating back pressure. • with long dosing lines in order to prevent excess delivery, as the accelerated medium continues moving on account of its own inertia even when the delivery stroke has already ended.
Legend on water meter 1 MAGDOS LT 2 Chemical tank Suction line with integrated low level control Multifunction valve PENTABLOC 5 Priming aid This equipment allows easy start up of small dosing pumps in particular.
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Mounting of MAGDOS LT to Wall Bracket, Tank Mounting Plate, and Pump Riser Base Legend Bolt M5 Rod M5 Mounting Hardware consisting of x Bolt x Rod (p/n 7558) Installation example ...
8.1 Setting of flow rate The flow rate is defined by two parameters: 1. Volumetric displacement per dosing stroke The stroke length adjustment limits the movement of the diaphragm. Adjusting the stroke length does not have a linear proportional effect on the stroke volume. The volume per dosing stroke is shown in the performance curves or displayed on the dosing pump’s calibration table.
IMPORTANT! 8.1.3 Factory setting Depending on the model, the MAGDOS LT works at different maximum stroke frequencies. These are preset in the factory. If the dosing pump is to be changed to a different size, it might be necessary to adjust the maximum stroke frequency.
Legend blink Status of LEDs Max. stroke frequency Factory setting for 80 min LT 02... 120 min LT 6...17 IMPORTANT! Increasing the stroke frequency beyond the specified characteristic values simultaneously reduces the maximum possible discharge pressure. IMPORTANT! 9. Start up NOTICE! Personal protective equipment as specified by on-site safety regulations must be worn at all times while working on the dosing pump!
Example: Required capacity: 0.15 ml/pulse at 6 bar (87psig). The value found is H (Stroke Length Setting) = 5.5 and must be set on the stroke length adjusting knob while the dosing pump is operating. NOTICE! Depending on the installation, the chemicals used and the media temperature, these values may differ and must be verified under operating conditions.
11. Maintenance Dosing pumps are produced according to the highest quality standards and have a long service life. Nevertheless some parts are subject to wear caused by operation (e.g. diaphragm, valve seats, valve balls). To ensure a long operating life, visual inspection is recommended regularly.
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Replacing the diaphragm 1. Remove the dosing head with a suitable tool (size Allen key). Figure 1 2. With the dosing pump operating, adjust stroke length setting to 0% and then turn pump off. Insert the lo- cking pin (Part No. 2979) through the drainage pipe into the drilled hole in the diaphragm rod .
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6. Push the support plate / spacer onto the threaded connector of the new diaphragm with the concave side facing towards the diaphragm. Figure 4 7. Turn the new diaphragm clo- ckwise into the diaphragm rod toge- ther with the support plate / spacer washer ...
11.2 Inspecting and replacing the deflector plate CAUTION! Chemical could spray out. This may lead to caustic or other burns. The dosing head must always be depressurized and rinsed with water or a suitable medium before starting any work on the dosing pump. CAUTION! The following steps are required to verify that the deflector plate is...
11.3 Check Valves The dosing pump check valves must be cleaned regularly. CAUTION! Chemical could spray out. This may lead to caustic or other burns. The dosing pump must always be depressurized and rinsed with water or a suitable medium before starting any CAUTION! work on the dosing pump.
11.4 Drive solenoid DANGER! Components are energized! Electric shocks can kill! Unplug the mains connector before opening the pump. DANGER! CAUTION! Hot metal parts may burn your hands. Always disconnect the mains power supply before opening the magnetic drive and let the dosing pump cool down for at least one hour. To check, measure the electrical resistance of the solenoid coil when it has cooled down.
11.5 Correction of stroke length adjustment IMPORTANT! After replacing the diaphragm or other spare parts it might become necessary to readjust the dosing pump. IMPORTANT! Legend Stroke length adjusting knob Locking screw 1. Dosing pump set to internal control. 2.
11.6 Diagram of the circuit board MAGDOS LT Component side Push button Level sensor black Input brown black + brown - white Power Pulse input Cursive corresponding 115 VAC version Reverse side Solenoid > > >1 >3 gez. gepr. Index Änderung...
14. Declaration of conformity This declaration is no assurance of characteristics in the sense of the product liability law. The safety notes in the operation & maintenance instructions must be obeyed.
15. Declaration of harmlessness Contact your local distributor for return authorization. Declaration of harmlessness chemical biological toxic flammable radioactive...
16. Warranty Please copy this page and send it back with the MAGDOS LT! If the dosing pump fails during the warranty period, please return the cleaned MAGDOS LT with the completed warranty claim. Sender Company: ................ Phone: ........Date: ........