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Installation, hydraulic
7.1 Basic installation notes
Safety notes
Legend for hydraulic diagram
Symbol
Explanation
Metering pump
Injection valve
Multifunctional valve
22
CAUTION!
Danger resulting from rupturing hydraulic components
Hydraulic components can rupture if the maximum permis‐
sible operating pressure is exceeded.
–
Never allow the metering pump to run against a closed
shut-off device.
–
With metering pumps without integral relief valve: Install
a relief valve in the discharge line.
CAUTION!
Hazardous feed chemicals can escape
With hazardous feed chemicals: Hazardous feed chemical
can leak out when using conventional bleeding procedures
with metering pumps.
–
Install a bleed line with a return into the storage tank.
Shorten the return line so that it does not dip into the feed chemical
in the storage tank.
A)
1
2
Fig. 17: (A) standard installation, (B) with pulsation damper
1
Main line
2
Storage tank
Symbol
B)
1
PD
*
2
Explanation
Foot valve with filter meshes
Level switch
Manometer
P_MOZ_0043_SW
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