Subject
Page
OPERATING INSTRUCTIONS
23
of
38
www.alfalaval.com
7.2.2.2 Recommendations & Calculations:
The operation of valves can be done while the CIP-pump is in operation, whenever the
flow is in circulation.
After starting the pump, set valve V05 at the pressure side to regulate flow.
STEP 1
Drain out the process fluid from the heat exchanger.
Assemble the hoses supplied with module between the CIP unit, tank/tanks and the
heat exchanger.
STEP 2
Fill the tank/tanks with required volume of water:
V
Water
= V
Total
x Part cleaning liquid
V
Total
= V
HE
+ V
Hoses&piping
+ V
Pump&heater
V
Total
= required volume (including cleaning liquids)
V
HE
= Volume in heat exchanger for the side that will be cleaned.
For Plate heat exchanger = (volume per channel) x No of plates / 2
V
Pump&heater
= Minimum volume for the CIP unit in order not to dry out the pump and the
heater in closed circuit excluding PHE is approx. 52 liters. This figure is the same for
both CIP 200L and CIP 400L since only tank B01 has a heater in the latter case and
circulation should not engage both tanks, see section 7.2.0.
V
Hoses&piping
=
-
There are 4 hoses in CIP 200L, total hose volume = approx. 20 liters.
-
There are 6 hoses in CIP 400L, total hose volume = approx. 30 liters.
The piping volume can vary depending on heat exchanger pipe diameter and pipe
length between CIP connection and PHE.
Instructions of use for the cleaning chemicals:
-
Mixing ratio = 1 part cleaning liquid to 9 parts of water
-
If the total volume is 100 liters, then
V
Water
= 100 / 10 x 9 = 90 liter
V
Cleaning liquid
=100 / 10 x 1 = 10 liter
-
Mixing ratio = 1 part cleaning liquid to 4 parts of water
-
If the total volume is 100 liters, then
V
Water
= 100 / 5 x 4 = 80 liter
V
Cleaning liquid
= 100 / 5 x 1 = 20 liter
Add calculated amount of cleaning liquids, see calculation above. (For the different
cleaning liquids mixing ratio, see
document “Cleaning procedures”)
STEP 3
Connect power to the unit. (3 ground)
STEP 4
Connect power to the heater. (3 ground).