Alfa Laval Unique SSV PN10, Instruction Manual

Page: 15 / 40

4 Operation
The valve is designed for cleaning in place (CIP).
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 valve or the pipelines when sterilising.
Danger of burns!
Step 3
Clean the plug and the seats correctly.
Pay special attention to the warnings
Lift and lower valve plug momentarily!
Shut-off valve Change-over valve
Step 4
Examples of cleaning agents:
Use clean water, free from chlorides.
1. 1% by weight NaOH at 70
o
C 2. 0.5% by weight HNO
3
at 70
o
C
1 kg
NaOH
+
100 l
water
= Cleaning agent.
0.7 l
53% HNO
3
+
100 l
water
= Cleaning agent.
2.2 l
33% NaOH
+
100 l
water
=
Cleaning agent.
Step 5
1. Avoid excessive concentration of the cleaning agent.
2. Adjust the cleaning flow to the process.
3. Always rinse well with clean water after the cleaning.
NOTE
The cleaning agents must be stored/disposed of in accordance
with current regulations/directives.
Always rinse!
Clean water Cleaning agents
15