7 The startup/shutdown of a pump
Operating manual mzr-2521 and mzr-2921
50
Technical data subject to change without prior notice!
Last update: June 2019
7.4.1
Conservation
If the micro annular gear pump operates at irregular intervals or for other reasons
should be put out of operation for a longer period, it should, after service and
flushing procedure (see chapter 7.3), be filled in with a suitable conservation
liquid.
The conservation liquid may be selected from the table 28 depending on the
duration of the standstill and the resistance of the pump to the manipulated
liquid (table 27). The indicated conservation liquids are simple recommendations
and should therefore be checked by the user as to their compatibility and
suitability. The figure 32 presents the diagram of conservation liquid selection.
Remark
: This diagram is repeated as a part of the figure 31 »Shutdown
After the cleansing procedure the pump should be filled with a suitable
conservation agent. You will find a choice of possible conservation liquids in the
Selection of conservation
liquid (CL)
CL
adequate
Is the CL
compatible
w ith pump
Is the CL
compatible
w ith the
last FL ?
yes
no
no
no
yes
yes
figure 32
Selection of the conservation liquid (CL)
see table 27 (resistance of the sealing materials)
see table 28 (Selection of conservation liquid)