Alfa Laval LKB - Recommended Cleaning

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4 Operation
The valve is designed for Cleaning In Place (= CIP).
Read the instructions carefully and pay special attention to the warnings!
NaOH = Caustic Soda.
HNO
3
= Nitric acid.
4.3 Recommended cleaning
S
S
t
t
e
e
p
p
1
1
A
A
l
l
w
w
a
a
y
y
s
s
handle lye and acid with great care.
C
C
a
a
u
u
s
s
t
t
i
i
c
c
d
d
a
a
n
n
g
g
e
e
r
r
!
!
A
A
l
l
w
w
a
a
y
y
s
s
use
rubber gloves!
A
A
l
l
w
w
a
a
y
y
s
s
use
protective goggles!
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S
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t
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e
p
p
2
2
N
N
e
e
v
v
e
e
r
r
touch the valve or the pipelines when sterilising.
D
D
a
a
n
n
g
g
e
e
r
r
o
o
f
f
b
b
u
u
r
r
n
n
s
s
!
!
TD 403-110
S
S
t
t
e
e
p
p
3
3
E
E
x
x
a
a
m
m
p
p
l
l
e
e
s
s
o
o
f
f
c
c
l
l
e
e
a
a
n
n
i
i
n
n
g
g
a
a
g
g
e
e
n
n
t
t
s
s
:
:
Use clean wa
ter, free from chlorides.
1. 1% by weight NaOH at 70
o
C (158
o
F) 2. 0.5% by weight HNO
3
at 70
o
C (158
o
F)
1 kg (2.2 lbs)
NaOH
+
100 l (26.4 gal)
water
=
Cleaning agent.
0.7 l (0.2 gal)
53% HNO
3
+
100 l (26.4 gal)
water
=
Cleaning agent.
2.2 l (0.6 gal)
33% NaOH
+
100 l (26.4 gal)
water
=
Cleaning agent.
S
S
t
t
e
e
p
p
4
4
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
3. A
A
l
l
w
w
a
a
y
y
s
s
rinse well with clean water after the cleaning.
A
A
l
l
w
w
a
a
y
y
s
s
r
r
i
i
n
n
s
s
e
e
!
!
Clean water
Cleaning agents
S
S
t
t
e
e
p
p
5
5
N
N
O
O
T
T
E
E
The cleaning agents must be stored/disposed of in accordance with current regulations/directives.
16