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7
Installation
7.1 Installation, hydraulic
CAUTION!
Danger of personnel injury and material damage
The disregard of technical data during installation may lead
to personal injuries or damage to property.
–
Observe the technical data- refer to chapter "Technical
Data" and, where applicable, the operating instructions
of the accessories.
WARNING!
Warning of feed chemical reactions to water
Feed chemicals that should not come into contact with water
may react to residual water in the liquid end that may origi‐
nate from works testing.
–
Blow the liquid end dry with compressed air through the
suction connector.
–
Then flush the liquid end with a suitable medium through
the suction connector.
WARNING!
The following measures are an advantage when working with
highly aggressive or hazardous feed chemicals:
–
Install a bleed valve with recirculation in the storage
tank.
–
Install an additional shut-off valve on the discharge or
suction ends.
CAUTION!
Suction problems possible
For feed chemicals with a particle size greater than 0.3 mm,
the valves may no longer close properly.
–
Install a suitable filter in the suction line.
CAUTION!
Warning against the discharge line bursting
With a closed discharge line (e.g. from a clogged discharge
line or by closing a valve), the pressure that the metering
pump generates can reach several times more than the per‐
missible pressure of the system or the metering pump. This
could lead to lines bursting resulting in dangerous conse‐
quences with aggressive or hazardous feed chemicals.
–
Install a relief valve that limits the pressure of the pump
to the maximum permissible operating pressure of the
system.
Installation
31
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