Installation and connection
Safety and inspection equipment
760.0002 GB - 150 500
BA-2011.11
Series AE1F, AE1L, AE.E, AE.N, AE.H, AE.V, AED1E,
AED2N
ID, ZD construction types
17
6.7 Safety and inspection
equipment
6.7.1 Pressure and vacuum gauges
Attach a pressure gauge to the pressure line
and a vacuum gauge to the suction line.
6.7.2 Safety device in the pressure
line
Warning!
Driving the pump with a pressure-
side liquid column is dangerous due
to the risk of reverse flow.
A return flow-stop must be located
between the discharge branch and
the stop valve to ensure that the
pumped liquid does not flow
backwards when the pump is shut
off!
If a shut-off device is located in the pressure
line or if there is the possibility that the
pressure line could become clogged, a safety
device must be installed, such as a diversion
line with integrated overpressure valve, space
diaphragm, motor protection switch, etc.
Warning!
High pressure
Progressing cavity pumps are
displacement pumps and are
theoretically capable of generating
unlimited pressure.
If the pressure lines are closed (due
to clogging or mistaken closing of a
valve), the pressure generated by
the pump could be several times
higher than the pressure permitted
in the system. This may lead, for
example, to rupturing of the lines,
which is particularly dangerous
when pumping hazardous
materials. For this reason,
appropriate safety devices (such as
pressure switches) must be
installed in the system!
6.7.3 Electrical connections
Caution!
A professional electrician must
attach the coupled drive motor’s
power supply cable in accordance
with the connection diagram
provided by the motor
manufacturer. All VDE regulations
and regulations from the local
power supply company must be
obeyed. Hazards associated with
electrical power must be eliminated.
An emergency off switch must be
installed!