Gotec ET Series Instruction Manual

Pumps type ET_ - EK_ - EM_
Release 98.09.18
1. Description
1.1. General
ET_ - EK_ - EM_'s type are compact solenoid driven oscillating piston
pumps.
The pump and the driving mechanism are integrated without any
shaftseal in a totally waterproof system.
The pump is self priming to a height's difference from 1 to 3 meters
according to the type of pump, which limits itself automatically its
maximal pressure.
1.2. function mode
GOTEC SA
Instruction manual
pressure connection
valve
valve
piston
coil
pressure spring
valve
suction connection
Rue des Casernes 59
Tel. . . 41-27-205 7 205
The piston (5) is moved by the
electromagnetic field generated by
the single wave diode rectified
current flowing through the coil (4).
Each current pulse moves the
piston against the pressure spring
(3). This movement, by reducing
the volume in the suction chamber,
opens the valve (6) set in the piston
to let the liquid run to the pressure
side.
When the current pulse dies the
pressure spring pushes back the
piston toward the pressure side.
The increase of pressure closes the
piston valve (6) and the liquid flows
through the valve (7) set in the
pressure connection (8) and into
the pressure pipe.
CH-1950 Sion
Fax . . 41-27-205 7 206
1
Suisse