4 Operation
The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place.
Study the instructions carefully and pay special attention to the warnings!
NaOH = Caustic soda.
HNO
3
= Nitric acid.
4.5
Recommended cleaning
Step 1
Always handle lye and acid with great care.
Caustic danger!
Always use rubber gloves!
Always use protective
goggles!
Step 2
Never touch the pump or the pipelines when sterilising.
Danger of burns!
3007-0015
Step 3
Examples of cleaning agents: Use clean water, free from chlorides.
1. 1% by weight NaOH at 70°C (158°F).
1 kg (2.2 lb)
+
100 l (26.4 gal)
= Cleaning agent.
NaOH
water
2.2 l (0.6 gal)
+
100 l (26.4 gal)
= Cleaning agent.
33% NaOH
water
2. 0.5% by weight HNO
3
at 70°C (158°F).
0.7 l (0.2 gal)
+
100 l (26.4 gal)
= Cleaning agent.
53% HNO
3
water
1. Avoid excessive concentration
of the cleaning agent
⇒
Dose gradually!
2. Adjust the cleaning flow to the
process.
Sterilisation of milk/viscous
liquids
⇒
Increase the cleaning flow!
Step 4
Always rinse well with clean water after using a cleaning agent.
NOTE
The cleaning agents must be stored/disposed of in accordance
with current regulations/directives.
Always rinse!
Water
Cleaning agent
NOTE
If pumps are sterilised using steam, standard 3A requeres the process system to be disigned to automatically shut down if the
product pressure in the system becomes less than of the atmosphere and it cannot be started until the system is re-sterilised.
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