BE6100
Edition 08/2018
Page 9 of 13
Turn off motor
Open terminal box and disconnect the power
leads.
Close all valves!
Empty out the pump.
Remove all materials which could potentially
cause harm to humans or the environment!
Coolants must not pollute the environment!
Depressurize the system!
When handling toxic materials, wear safety
glasses, protective clothing and protective
gloves!
7 Operation
7.1 Liquid level
Check for proper liquid level.
The minimum liquid level (H, see drawing 1)
should be 70 mm for BFS1, BFS2, and TFS3,
100 mm for TFS4 and TFS5 and 150 mm for
TFS6.
Maximum liquid level is 35 mm below the
pump’s mounting plate.
The distance between the suction pipe and the
bottom of the tank is 100 mm for BFS1, BFS2,
TFS3, TFS4 and TFS5 and 150 mm for TFS6.
These distances must be adhered to.
Using the patented Brinkmann suction protector
prevents large particles and foreign objects from
entering the screw pump. The protector extends
the life expectancy of the pumps significantly. In
addition, the large surface area of the suction
protector prevents the pump from drawing air
which can be caused by a funneling effect at the
suction pipe if no suction protector is used.
The pump may only be installed and operated in
a suitable container!
Operation is only permitted with a suction pipe,
suction line or suction protector.
ATTENTION
Never operate screw pumps dry.
Sufficient fluid level must always be ensured.
Avoid hydraulic shocks!
7.2 Signs of abnormal operating behaviour
Discolouration, noises and vibrations in the
vicinity of the adaptor cap point to problems with
the main drive spindle bearing. In order to avoid
hazards, the pump should be put out of service
immediately!
When the pump noise increases, this indicates
to a medium with insufficient lubricity, or wear
and tear.
If the noise increases to a level which is no
longer permitted or in the case of strong vibra-
tions, the pump should be exchanged immedi-
ately.
7.3 Operation with a frequency inverter
When operating with a frequency inverter, the
user must ensure that it has a safety reserve of
10% in terms of the nominal voltage of the mo-
tor. In addition, the size of the motor should pro-
vide a safety margin of 10 % with respect to the
max. pump output.
When operating with a frequency inverter it is
necessary to follow the permitted minimum
speeds and maximum speeds. These depend
on the pressure, medium and pump model. If
necessary, consult with the factory.
Please follow the separate operating instructions
for the frequency inverter (jointly supplied).
7.4 Operation with a pressure relief valve
When operating with a pressure relief valve the
user should bear in mind that the self-setting
operating pressure depends on the flow rate,
especially in the case of spring-controlled
valves. As such, the operating pressure should
not be insignificantly above the opening pres-
sure of the valve. The motor power is to be ade-
quately rated according to the maximum prevail-
ing pressure.
In addition, please follow the separate operating
instructions for the pressure relief valve (jointly
supplied).
7.5 Operation with mechanical seal -G and
FFS pump series (inline)
The mechanical seal gets damaged and de-
stroyed by pressure spikes, which therefore
must be avoided on the system side. Pumps
equipped with the -G4 feature are not affected
by this.
Due to the design principles of mechanical
seals, leakage flow always occurs. The lekage
can (if necessary) be captured and redirected
from the threaded opening in the bearing cover.
Please ensure that pumps equipped with me-
chanical seal -G or of the FFS series pumps
(inline version) have always a flooded suction
and are operated with a positive supply pres-
sure. Operating these pumps under negative
pressures can cause mechanical seal damage /
failure due to lack of lubrication on the seal
faces. Pumps equipped with the -G4 feature are
not affected by this.
If the pump becomes blocked, do not operate
the pump any longer (see point 6.3) and send it
to the manufacturer for repair.
8 Servicing and Maintenance
ATTENTION
The surface of the motor must be kept free of
dirt.
BRINKMANN-Screw pumps are maintenance
free.
In case of damage, pump must be sent back to
the manufacturer.
Unauthorized repair work or opening of the
pump will void all warranties!
