ProMinent Sigma 3 Basic Operating Instructions Manual page 47

Observe the technical data
Checking for regulation-compliant installa‐
tion
Diaphragm rupture sensor
CAUTION!
Feed chemical could escape
– Check suction and discharge lines, and liquid end
with valves, for leak-tightness and tighten if neces‐
sary.
– Check whether the necessary flushing pipes or
bleed lines have been connected.
CAUTION!
Liquid end may be damaged
– Always fit a filter in the suction line with feed chemi‐
cals with a particle size greater than 0.3 mm
CAUTION!
Prior to commissioning, check that the power end motor
and corresponding ancillary equipment is connected in
compliance with the regulations!
CAUTION!
Adhere to the instructions in the frequency converter
operating instructions when using pumps with speed
control
CAUTION!
Danger of material damage
Observe the details in the chapter "Technical data"
(pressure, viscosity, resistance, etc.).
Check that the installation complies with the regulations
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 in the event of the rupture of a dia‐
phragm.
– Only rely on the diaphragm rupture sensor with back
pressures of greater than 2 bar.
Or install a back pressure valve and set it to a min‐
imum of 2 bar – if the installation permits this.
Start up
47