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.
4.3
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!
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
Cleaning agents must be stored/disposed of in accordance with
current regulations/directives.
Always rinse!
Clean water
Cleaning agent
NOTE:
The 3A standard requires that if pumps are steam sterilized the process system must be designed to automatically shut down
if the product pressure in the system becomes less than that of the atmosphere and cannot be started until the system is
re-sterilized.
16
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