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TEFEN Advanced Plastic Solutions.
Water with high particle content
(ex.: 120 mesh - 130 microns depending on your water quality) water filter must
be installed prior to the injector (see accessories), if a filter is not installed
Abrasive substances will cause the injector to deteriorate prematurely.
Installing the injector on an irrigation line
It is recommended to fit a main valve (1) at the beginning of the line as well as a backflow
prevention valve (3). On a drinking water line, according to local regulations, it is obligatory to
install a backflow prevention valve to prevent entry of chemicals into the drinking water. Then as
shown in the din the diagram the following have to be installed: A pressure reducer (4) to
protect the injector from excess pressure, a filter (2) of at least 120 mesh (130 micron), a valve
(6) before entry to the injector, vacuum valve (7) to prevent siphoning when the injector is not
operating, and valves to the feed lines have then to be installed. It is advisable to add a bypass
pipe through which the water can flow to irrigation without fertilizer or when it is required to
dismantle the injector.
Installation of the injector on a bypass line
It is necessary to fit the proportional dosing injector to a bypass line when irrigation with a flow
rate higher than the maximum recommended for the injector. The bypass enables only part of the
water flow to pass through the bypass and activate the injector, while the reminder passes through
the main line. Using the choke valve (7) on the main line, the flow of water passing through the
main is regulated so that the rest of the flow passes through the bypass and activates the injector.
The metering must be calculated in accordance with the flow rate passing through both lines.
It is necessary to fit a main valve (1) at the beginning of the line and after it a backflow
prevention valve (3), pressure reducer (4), a water filter (2) of at least 120 mesh (130 micron)
, a T connection (A) for diversion from the main line to the bypass, a valve on the bypass before
the inlet to the proportioning dosing injector, a valve after the outlet from the injector (9) on the
bypass and a T-connector for the return to the main line (B). A choke valve, preferably an angled
valve, should be fitted on the main line between the bypass. An anti vacuum valve (8) should be
fitted together with valves for the branch lines after the return connection from the bypass.
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TEFEN
TEFEN Advanced Plastic Solutions.
Mantenimiento de rutina
En forma periódica limpie el filtro de agua a la entrada del inyector y el filtro de succión
de fertilizante.
Si se planifica no operar el inyector durante un largo período de tiempo, haga funcionar
al inyector durante unos minutos con el tubo de medición sumergido en un tanque con
agua limpia para eliminar residuos de fertilizante del inyector y evitar que se puedan
solidificar adentro del inyector.
Si existe un riesgo de congelamiento y la temperatura cae por debajo de los 4°C
(39°F) drene el agua del inyector. Para hace esto, cierre las válvulas de entrada y
salida en forma firme. Abra y desarme el record
Presione la válvula de chequeo de succión usando un dedo o una varilla delgada,
permitiendo que el agua que haya acumulada en el inyector drene hacia fuera
mientras presiona la válvula liberadora de aire en la parte superior del inyector.
25
" que conecta la tubería de succión.
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