4Operation
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
=Nitricacid.
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.
Burn hazard!
TD 461-595
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
TD 461-599
Lift lower
valve plug
TD 461-600
Step 4
Examples of cleaning agents:
Use clean water, free from chlorides.
1. 1% by weight NaOH at 70
o
C
1kgNaOH
+
100 l water
=
Cleaning agent.
+=
Cleaning agent.
2.2 l
33% NaOH
100 l
water
2. 0.5% by weight HNO
3
at 70
o
C
+=
Cleaning agent.
0.7 l
53% HNO
3
100 l
water
13
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