Basic Installation Notes - ProMinent Sigma/ 2 Control S2Cb Operating Instructions Manual

Installation
Diaphragm rupture sensor

7.1.1 Basic installation notes

Safety notes
30
When operating the integral relief valve close to the
opening pressure, a minimal overflow into the overflow
line can occur.
CAUTION!
Danger resulting from unnoticed diaphragm rupture
If the pump has been ordered with an electric diaphragm
rupture sensor, it still has to be installed.
– Screw the enclosed diaphragm rupture sensor into
the liquid end.
CAUTION!
Warning of unnoticed diaphragm rupture
Only above approximately 2 bar system back pressure is
a signal generated upon a diaphragm rupture.
– Only rely on the diaphragm rupture sensor at back
pressures greater than 2 bar.
CAUTION!
Danger resulting from rupturing hydraulic components
Hydraulic components can rupture if the maximum per‐
missible operating pressure is exceeded.
– Never allow the metering pump to run against a
closed shut-off device.
– With metering pumps without integral relief valve:
Install a relief valve in the discharge line.
CAUTION!
Hazardous feed chemicals can escape
With hazardous feed chemicals: Hazardous feed chem‐
ical can leak out when using conventional bleeding pro‐
cedures with metering pumps.
– Install a bleed line with a return into the storage
tank.
Shorten the return line so that it does not dip into the feed chemical
in the storage tank.