Solenoid diaphragm pump
Series R/RS 204.1
Operating Instructions
28
www.sera-web.com
Subject to technical modifications!
TA 416
Rev.
11 en
04/2013
START
STOP
ENTER
AUTO
MANU
START
STOP
CAUTION !
Undamped acceleration forces may lead to the following
faults / damage:
delivery rate fluctuations
dosing errors
pressure serges
valve wobbles
increased wear on the suction- and pressure side of the
pump;
mechanical damage of the pump
leakage and valve wobbles if the permissible maximum
pressure on the pump pressure side is exceeded.
Installation of suction and/or pressure pulsation damper near
the pump head.
If both pulsation damper and pressure keeping valve
should be integrated install the pressure keeping valve
between pump and pulsation damper.
Pulsation damper
(pressure side)
Pressure line
Pressure keeping valve
Container
Shut-off valve
Suction line
Fig. 30 Installing a pulsation damper and a pressure keeping valve
9
Electrical connections
9.1
Electric supply
The
sera
– magnetic diaphragm pump is delivered ready for
installation. Standard delivery includes a 2m power cable with
Euro plug. The
standard version R 204.1
of the dosing pump
is designed for an operating voltage range of 100
– 240V,
50/60Hz.
CAUTION !
The self-venting version RS 204.1 has a limited operating
voltage range. The specifications on the type plate must
absolutely be adhered to!
The RS 204.1 is available in three versions:
190
– 240V, 50/60Hz
100
– 120V, 50Hz
100
– 120V, 60Hz
CAUTION!
Switching the voltage supply on and off temporarily is to
be avoided!
CAUTION !
The pump restarts in the selected operating mode after
the power supply was switched on or a power supply re-
covery following a mains failure!
Symbol:
Fig. 31 (Electric supply)
CAUTION !
Only operate the pump when it is connected to an earthed
power supply!
