7.
Draining:
As soon as the fluid has drained out, purge the liquid end with clean
compressed air with the pump switched off (otherwise residual liquid
will remain collected above the suction valve and the discharge
valve).
Cleaning agent
Max. chloride con‐
tent in the batching
water
mg/l
Concentration
%
Dwell time
min
Max. tempera‐
ture
°C
Flushing with cold water
150
-
-
-
Sodium hydroxide solution NaOH
150
2 ... 3
30 ... 45
80
Hydrogen peroxide (H
2
O
2
) product used as
an intensifier for 1 ... 2 % NaOH
150
Injection: 0.1
Batch: 0.5
30
80
Acidic cleaning agent based on phosphoric
acid H
3
PO
4
150
3
45
70
Acidic cleaning agent based on nitric acid
HNO
3
150
2
45
70
Acidic cleaning agent based on a mixture of
phosphoric acid and nitric acid
150
2
45
70
Chloro-alkaline cleaning agent / disinfec‐
tant, pH value > 11
120
1.5
45
60
Disinfectant
Max. chloride con‐
tent in the batching
water
mg/l
Concentration
%
Dwell time
min
Max. tempera‐
ture
°C
Acidic disinfectant based on peracetic acid
150
0.2 ... 1.0
20
25
" , application variation
150
0.5
45
40
Acidic disinfectant based on haloacid /
phosphoric acid
150
0.5 ... 1.0
20
25
Acidic disinfectant based on haloacid / nitric
acid
150
0.5 ... 1.0
20
25
Neutral disinfectant based on hydrogen per‐
oxide (H
2
O
2
)
150
0.5 ... 1.0
30
25
" , application variation
120
0.3
60
70
Chloro-alkaline cleaning agent / disinfec‐
tant, pH value > 11
120
1.5
45
60
Bottle disinfection with peracetic acid
5
2000 mg/l *
continuous
60
" , application variation
5
4000 mg/l *
continuous
30
Sterilisation with hot water
150
-
45
140
Sterilisation with steam
-
-
45
135
* Concentration based on pure peracetic acid
Selected cleaning agents and parameters
Selected disinfectants and parameters
Notes on cleaning metering pumps with hygienic pump head
22
