7.
Open the bottom stopcock (5) on the dilution water metering
vessel.
ð
The ammonia passes into the dosing tank through a pipe
below the water level.
Steps 5 and 6 can be repeated several
times if the required final concentration
needs several top-ups of the metering
vessel.
WARNING!
Note the following to ensure that the
ammonia concentration in the dosing
tank remains below the explosion limit:
– With starting solutions of 25% w/w
ammonia in water:
A maximum of 6 top-ups of the
metering vessel can be added to the
“120 l” dosing tank.
A maximum of 5 top-ups of the
metering vessel can be added to the
“250 l” dosing tank.
This ensures that the maximum per‐
mitted metering solution of 2.5% w/w
is not exceeded. Correspondingly
more top-ups are needed with lower
starting solutions.
8.
Open the stopcock (6) – briefly flush the metering vessel with
the dilution water and re-close the stopcock (6).
9.
Wait until the metering vessel has emptied and then close
the stopcock (5).
10. Open the stopcock (2) for dilution water and allow as much
water to flow into the dosing tank until the required concen‐
tration has been reached.
WARNING!
Hazardous ammonia water solution may
escape
Overfilling can cause hazardous ammonia
water solution to escape.
– Fill the dosing tank at most up to the top
marking (120 l or 250 l marking)
11. Use the manual stirrer (4) to stir for approximately 15 s to
obtain a homogeneous solution.
12. Set the multifunctional switch on the “metering pump” to the
required frequency or to “External”.
ð
The “metering pump” can now meter the diluted ammonia
water into the application.
Operation
30
Summary of Contents for DULCODOS Ammonia
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