2.5.5.5
Discharge line
Do not arrange the shut-off valve directly above the pump but initially provide a transition section.
The discharge nozzle velocity of the medium can – if necessary – be reduced.
2.5.5.6
Venting and evacuating
Venting can take place into the discharge line or upstream of the discharge valve. A venting line
can also be used as a bypass, drain or flushing line. The pump housing is fitted with a drain con-
nection as a standard feature. Optionally, the drain bore can be drilled and used as a drain connec-
tion. For boring template, see Section "Assembly aids" in the "user manual".
2.5.6 Actuator
The power consumption of the pump at the operating design point is specified in the data sheet
and works certificate.
If the operating design point was not known when the pump was dispatched, the power consump-
tion can be read off the appropriate performance curves.
The max. density, the max. viscosity (GLRD: performance margin for the respective mechanical
seal) and a safety margin are to be considered.
Magnetic drive pumps
Care must be taken when selecting the motor size to ensure that the excess power is not too
great but that the requirements acc. to ANSI/HI or DIN EN ISO 5199 are satisfied.
During start-up the magnetic drive could otherwise stop.
The magnetic drive rating at the required pump speed is given in the pump data sheet.
If the motor rating exceeds this magnetic drive rating – at pump speed -, it is necessary to check
for any stoppage of the magnetic drive.
This also applies if the required drive rating exceeds 80% of the magnetic drive rating – at pump
speed.
Consult Richter if necessary.
Different operating data can be achieved without changing the pump through the use of different
speeds, e.g. by means of a frequency converter.
The pump with base plate and motor is illustrated in the installation drawing.
The operating manual of the motor manufacturer must be observed.
WARNING!
A motor with a valid ATEX certificate is to be used if employed in zone 1 and 2.
Safety and installation instructions for Richter pumps
Richter Pumpen /
pumps
Installation > Actuator
22
Summary of Contents for MNK
Page 2: ...Richter Pumpen pumps 2...
