9.1.5 Suction lances / suction assemblies for acid and chlorite
WARNING!
Warning of toxic chlorine dioxide gas
Toxic chlorine dioxide can arise outside the mixer vessel.
–
Allocate parts correctly to the acid and chlorite sides.
WARNING!
Warning of corrosive acid or toxic chlorite solution
Corrosive acid or toxic chlorite can escape at the connectors.
–
Only use suitable hoses and connector kits.
Only use suction lances or suction assemblies with two-
stage level switches and open end Other suction lances do
not fit.
Do not insert the suction lances into the chemical drums yet!
1.
Adjust the length of each suction lance - the foot valve should sub‐
sequently float in the container just above the base.
2.
Stick the "Acid" and "Chlorite" labels (in the scope of supply) onto
the suction lance heads or suction hoses so they are clearly legible.
"Acid", red, is attached on the left - "Chlorite", blue on
the right!
3.
Shorten the suction hoses so that subsequently they rise continu‐
ously and are free from tension.
4.
Pull the union nut (4) and clamp ring (3) over the suction hose (5) -
see figure .
5.
Push the hose end over the nozzle (2) until it will go no further (it
may be necessary to slightly widen the hose end).
6.
Fit the nozzle on the pump suction valve (1).
7.
Press the suction hose (5) onto the nozzle (3) and tighten the union
nut (4).
8.
Pull briefly on the suction hose (5) and tighten the union nut (4).
9.
In just the same way, connect the bleed hose from the measuring
vessels to the suction lances.
Do not push the hose ends too deeply into the suction
lances - they should not be immersed in the liquid in
the chemical canister
Otherwise this could result in operational malfunction.
Safety notes
Installing suction hoses
Installation
25