4Operation
The valve is designed for cleaning in place (CIP). CIP = Cleaning In Place.
Study the instructio
ns 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.
Burning danger!
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 clorides.
1. 1% by weight NaOH at 158
o
F
2.2 lb
NaOH
+
26.4 gal
water
=
Cleaning agent.
+=
Cleaning agent.
0.6 gal
33% NaOH
26.4 gal
water
2. 0.5% by weight HNO
3
at 158
o
F
+=
Cleaning agent.
0.2 gal
53% HNO
3
26.4 gal
water
1
6
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