Operation
Bringing the pump into operation
20
Series AE1F, AE1L, AE.E, AE.N, AE.H, AE.V, AED1E,
AED2N
ID, ZD construction types
BA-2011.11
760.0002 GB - 150 500
Caution!
The pump’s direction of rotation
must match the “n” directional
arrow on the pump’s nameplate.
Improper direction of rotation can
damage the pump!
►
To check the direction of
rotation, turn the pump on and
immediately back off.
7.2 Bringing the pump into
operation
7.2.1 Starting
Caution!
Open all blocking devices on the
suction and pressure sides before
starting.
7.2.2 Drive
►
Switch the motor on.
Caution!
Observed the characteristics of the
specific drive you are using. Refer
to the drive manufacturer’s
operating instructions.
7.2.3 Checking pump capacity
Once the drive has reached its operating
speed, use the vacuum gauge and pressure
gauge to check the pump’s inlet and outlet
pressures.
Do not overload the motor. Power consumption
can be checked with an ampere meter. The
temperature and viscosity of the pump liquid
should be monitored in this context. Compare
the values obtained with the order data sheet
and inspection protocol.
7.2.4 Dry-running protection
If there is no pumped liquid on the suction-side
of the pump, the heat generated by dry friction
and deformation forces in the pumping
elements of the progressing cavity pump will
no longer be adequately dissipated. This will
result in thermal destruction of the stator
elastomer after only a short period of time. A
variety of dry-running protection devices are
available for protection of the pumping
elements. Please inquire at the factory for
more information.
7.3 Taking the pump out of
operation
7.3.1 Stoppage
►
Switch the motor off.
7.3.2 Measures for longer periods
of downtime
If operations will be interrupted for a longer
period of time and there is a danger of frost,
the pump must be emptied.
►
To empty the pump, remove screw plug
(502) from suction casing (505). The
pump must then be treated with
preservatives (
Section 5.3 Page 10).
7.4 Special applications of the
pump
If the progressing cavity pump will be used to
transport food or if it will be used in the
cosmetics or pharmaceutical industries, special
cleaning, disinfection, and flushing agents
must be used in conjunction with the proper
procedures.
Make sure that the regular pumped liquids do
not become contaminated with residuals of the
cleaning and/or flushing/disinfection agents.
We recommend using only liquids that, should
they contaminate the pumped liquid, will not
have harmful effects.
If the pump or pump unit is operated in
potentially explosive atmospheres, follow the
ATEX supplemental instructions.