Operation - ProMinent A1581 Instrucciones De Montaje Y Funcionamiento

Operation

5

Operation

NOTICE!
Install a non-return valve at the point of
injection, as the entire contents of the
system can flow back through the bypass
if the relief valve is actuated.
Make sure that the bypass line is always
connected, as operating the multifunctional
valve close to the overpressure function
can cause minimal overflows into the
bypass line.
Operating and adjusting the priming aid
The discharge line is partially depressur‐
ised during this and liquid can escape at
the bypass.
Turning the red rotary dial (2) clockwise opens
the path to the bypass. The medium flows back
into the storage tank.
Now set the ProMinent metering pump to "Pri‐
ming", referring to the operating instructions for
the metering pump, until liquid becomes visible
in the bypass line. The metering pump has
primed and can now be started up. When the
red rotary dial (2) has been released, it auto‐
matically returns to its starting position.
24
Depressurising the discharge line
Unscrewing the red rotary dial (2) and the black
rotary dial (1) clockwise opens the path from
the discharge line to the bypass. If only the red
rotary dial (2) is unscrewed, the pressure in the
line falls to approx. 1.5 bar.
Keep the two rotary dials unscrewed until no
more liquid escapes at the bypass opening
and/or no liquid flows back into the storage
tank. The metering line is now depressurised.
Once the two rotary dials have been released,
they automatically return to their starting posi‐
tion.