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7.1 Basic installation notes
Rupturing hydraulic components
n
Hydraulic components can rupture if the maximum permissible oper‐
ating pressure of the hydraulic parts is exceeded.
n
Never allow the metering pump to run against a closed shut-off
device.
n
With metering pumps without integral relief valve: Install a relief valve
in the pressure line.
Hazardous feed chemicals can escape
n
With hazardous feed chemicals: Hazardous feed chemical can leak
out when using conventional bleeding procedures with metering
pumps.
n
Install a degassing line with a return line into the supply tank.
Shorten the return line so that the line is not immersed in the feed
chemical in the supply tank.
P_MOZ_0043_SW
2
1
A)
B)
*
PD
1
2
Fig. 18: (A) Standard installation, (B) with pulsation damper
1
Main line
2
Supply tank
Tab. 4: Legend for hydraulic diagram
Symbol
Explanation
Symbol
Explanation
Metering pump
Foot valve with filter mesh
Injection valve
Level switch
Back pressure valve or safety valve
Manometer
Safety information
Standard installation
Installation, hydraulic
36
Содержание Sigma / 2 Basic S2Ba
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