Lutz-Jesco MEMDOS SMART LD, Руководство по эксплуатации

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Hydraulic installations
Hydraulic accessories
25
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150302 BA-10102-02-V02
Stepper motor-driven diaphragm dosing pump MEMDOS SMART LD Operating Instructions
8.7.6 Priming aid
Priming aids are particularly advisable:
n
in the case of dosing pumps with small volumetric displacements per
stroke or with low stroke length settings,
n
with high suction hights,
n
with highly dense dosing media,
n
at priming for the first time due to dry valves and air in the suction line
and the dosing head,
n
in dosing systems with frequent downtimes.
Further advantages resulting from priming aids:
n
preventing cavitation in the suction line,
n
gas removal,
n
optical dosing control with small amounts,
n
smoothing of the suction flow.
a
b
e
c
f
d
g
Fig. 24: Installation with a priming aid
No. Description
a
Main line
b
Injection nozzle with shut-off valve
c
Priming aid
d
Dosing pump MEMDOS SMART LD
e
Wall bracket
Table 16: Designation of components
No. Description
f
Dosing tank
g
Suction line
Table 16: Designation of components
8.7.7 Level monitoring
Level monitoring of suction-side feeding of the dosing medium to prevent
the tank being sucked dry and to ensure that it can be topped up again in
good time.
a
b
d
e
f
c
Fig. 25: Installation with a level monitoring system
No. Description
a
Main line
b
Injection nozzle with shut-off valve
c
Pressure line
d
Dosing pump MEMDOS SMART LD
e
Dosing tank
f
Suction line with level monitoring
Table 17: Designation of components