Automatic By-Pass - dosatron 40 GPM Manuel D'utilisation

AUTOMATIC BY-PASS

A mechanism to select either the dosing function or the by-pass mode :
The operating medium must have a minimum pressure of 0.8 bar [12 PSI]
in order to operate the by-pass.
NOTE : When operating the By-pass through a remote control system, the
operating lever (Fig. 10-L) must be on the ON position.
Q : Barbed fitting ø 3 [1/8"]
(supplied with the DOSATRON)
Fig. 10
F
Operating the automatic by-pass :
- Opening of the solenoid valve.
Power supply open : 1 to 2 > Normal operating : Admission of the by-pass
operating medium
By-pass function activated : Dosing function stopped
3 > Outlet closed
Operating of the DOSATRON :
- Closing of the solenoid valve.
Power supply interrupted : 2 to 3 > Outlet open : Escaping of the by-pass
operating medium
Activating of the dosing function
1 > Pressure at stand-by
© DOSATRON INTERNATIONAL / 42
By-pass operating medium (air
or water) Pressure : 0.8 to 8 bar
[12 PSI to 120 PSI]
O: 3-way
Solenoid valve
(not supplied with the
DOSATRON)
F
T : Flexible tube ø 6 x 9
[1/4" ID x 3/8" OD]
AUTOMATIC BY-PASS (cont...)
Automatic anti-siphon valve :
- This automatically recreates normal atmospheric pressure in the DOSATRON
in the event of an accidental vacuum in the line (Fig. 11)*.
Its use depends on the regulations in force in your country.
- You must comply with the local water authority's requirements.
- To put into operation, unscrew the nut (Fig. 11-E), remove the solid metal
disc (Fig. 11-P) and replace it by the washer (Fig. 11-C) supplied with the
DOSATRON.
- Screw the nut (Fig. 11-E).
E
*i.e. if the water outlet is lower than the inlet.
© DOSATRON INTERNATIONAL / 43
Fig. 11
Rubber
washer
Ball
C P