It is preferable not to run the Micro C pump during CIP
although low speed (< 100 rpm) is acceptable by alter-
nating start/stop operation.
• In certain cases, the cleaning pressure required for the
installation is higher than 2 barg (29 psig). In this case,
the use of a bypass is required and cleaning is done in
2 steps.
Cleaning the pump :
The cleaning flow should be limited during the cleaning
of the C pump to ensure a maximum pressure of 2 barg
(29 psig) at the C pump inlet.
It is preferable not to run the Micro C pump during CIP
although low speed (< 100 rpm) is acceptable by alter-
nating start/stop operation.
Cleaning the installation :
During this operation, the valve system used must
ensure that no flow passes through the pump. This is in
order to ensure that the Micro C does not run. Under
these conditions, with the pump completely stopped, the
pressure of the washing circuit can rise up to 3 barg (43,5 psig).
The pump must not run during this operation.
4.4 Pumps arranged in parallel
For applications where cleaning is easy and the differential
pressure of the Micro C pump is lower than 2 bar (29 psi)
during this operation, assembly in parallel is authorised. It
should be noted that during cleaning, the Micro C pump
will generally be acting on a product with few lubricating
properties. This will contribute towards wear of the pump.
The CIP centrifuge pump must never be installed in parallel
with a Micro C pump without taking special precautions.
Indeed, in this case, the pressure at the inlet of the Micro
C pump is lower than the pressure at the discharge and
the piston remains forced against the cylinder. Therefore,
the Micro C pump no longer provides a passage.
Its efficient cleaning can no longer be ensured and the
cylinder/piston pair will become prematurely worn.
Authorised assembly :
As mentioned previously for applications where cleaning
is easy, assembly in parallel is authorised when the
valves are installed so that the cleaning pressure of the
circuit does not come into contact with the Micro C pump.
In this case, the Micro C pump cleans itself.
Cleaning the pump :
We recommend limiting the rotation speed of the Micro
C pump.
Cleaning the installation :
The Micro C pump is stopped when cleaning the instal-
lation.
Micro C pump
Max pressure
2 barg
(29 psig)
Micro C pump
Max pressure
2 barg
(29 psig)
Micro C pump
Max pressure
3 barg
(43,5 psig)
CIP pump
Micro C pump
Micro C pump
Max pressure
2 barg
(29 psig)
Micro C pump
4. CLEAN IN PLACE (CIP)
& STERILISATION IN PLACE (SIP) (continued)
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NT 1001-P00 02 19 Pumps Micro C e
