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12
Operation
Batching hydrazine solution
Adjusting the capacity
WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious injuries.
Please ensure when handling hazardous substances
that you have read the latest safety data sheets provided
by the manufacture of the hazardous substance. The
actions required are described in the safety data sheet.
Check the safety data sheet regularly and replace, if
necessary, as the hazard potential of a substance can
be re-evaluated at any time based on new findings.
The system operator is responsible for ensuring that
these safety data sheets are available and that they are
kept up to date, as well as for producing an associated
hazard assessment for the workstations affected.
WARNING!
Hydrazine solution can escape
If hydrazine solution is batched without supervision,
hydrazine solution can be forced out of the system under
pressure.
–
As batching is done in manual mode, it must be
monitored from start to finish.
WARNING!
Hydrazine vapours can escape
Hydrazine vapours will escape if the lid of the dosing
tank is open.
–
The lid of the dosing tank must not and may not be
opened.
1.
Open the stopcock 1 (2) for diluting water and initially fill the dosing
tank a third full.
2.
Using the multifunctional switch (1), switch the transfer pump from
"stop" to "100", so that hydrazine is pumped from the storage tank
into the metering vessel (3). When the maximum liquid level is
reached, the level switch turns the transfer pump off.
3.
Using the multifunctional switch (2), switch the transfer pump from
"100" to "stop" so that the transfer pump does not meter unwanted
hydrazine as soon as the level switch drops when emptying the
metering vessel (3).
4.
Simultaneously open the stopcock 2 (5) at the bottom of the
metering storage tank and stopcock 1 (2) for diluting water – hydra‐
zine flows into the dosing tank and, at the same time, a mist of
diluting water condenses evaporated hydrazine.
5.
Close both stopcocks as soon as the maximum filling level has been
reached (marking 140 l or 250 l depending on the size of tank).
6.
Use the manual stirrer (4) to stir for approximately 15 seconds to
ensure a homogeneous solution.
ð The metering pump can now meter the hydrazine solution into
the application.
The capacity can be adjusted using both the stroke rate (multifunctional
switch) and the stroke length (see the attached "Operating instructions for
solenoid metering pump Beta
®
BT4 and BT5").
Operation
23
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