Jesco MAGDOS LK Operating Instructions Manual

Hydraulic installationHydraulic accessories20 © Lutz-Jesco GmbH 2015BA-10221-02-V03Stepper Motor-driven Diaphragm Dosing Pump MAGDOS LK Operating Instructions8.7 Hydraulic accessoriesThe following chapter is intended to give you an overview of installationoptions.Please note that these operating instructions are no substitute for theinstructions supplied with the accessories in each case. The corre-sponding documentation supplied with the product applies to safetyinformation and provides exact instructions on assembly.8.7.1 Injection nozzleIf the pressure line enters a main line, it is advisable to install an injectionnozzle.Injection nozzles have three main functions:n Dosing the medium into a main line,n Preventing flowback into the pressure line through a non-return valve.Notes on assembly:n Double-ball injection nozzles must be installed into the main linevertically from the bottom. You can install hose and spring-loadedinjection nozzles any way you like.n With dosing media that tend to crystallize, it is advisable to carry outinstallation into the main line from the bottom. This prevents airbubbles from being trapped.n Many dosing media tend to contaminate the injection nozzles, whichcan lead to blockages. In cases like this, it is advisable to install aninjection nozzle that is easy to dismantle and block off.abcfeh idgFig. 16: Installation with an injection nozzleNo. Descriptiona Main lineb Injection nozzle with shut-off valvec Pressure relief valved Chemical tanke Pressure linef MAGDOS LK dosing pumpg Wall bracketh Shutoff valvei Suction lineTab. 12: Designation of components8.7.2 Contact Water MeterThe contact-type water meter measures the throughflow in a pipe andsends a pulse to the dosing pump, which then starts dosing. This meansthat ideal proportional dosing is also possible with large throughflowfluctuations.The Contact Water Meter connects to connection socket 2 (see “Connec-tion socket 2“ on page 27).You determine the ratio of throughflow and executed strokes of thedosing pump in „Pulse input“ mode, (see “Water meter“ on page 37).Fig. 17: MAGDOS LK installation on contact-type water meter