CAUTION!
Prior to commissioning, check that the pump and corre‐
sponding ancillary equipment is connected in compli‐
ance with the regulations!
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.
The valves may no longer close properly with feed
chemicals with a particle size of greater than 0.3 mm.
–
Install a suitable filter in the suction line.
CAUTION!
Danger due to incorrect use of the integral relief valve
The integral relief valve can only protect the motor and
the gear, and then only against impermissible positive
pressure that is caused by the metering pump itself. It
cannot protect the system against positive pressure.
– Protect the motor and gear of the system against
positive pressure using other mechanisms.
–
Protect the system against illegal positive pressure
using other mechanisms.
Observe the technical data
Checking for regulation-compliant installa‐
tion
Diaphragm rupture sensor
Avoid particles
Using the integral relief valve
Start up
63
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