Watson-Marlow EC 25 User Manual
Page 12
Revision 4.4 / November 2010
12
The motor must be connected by an expert according to DIN EN 60204.
Make sure before start-up that all valves on the pressure and suction side are open. The pump
may not pump against a closed valve without overpressure valve.
If the pump leaks, end operation as quickly as possible to replace the damaged sealing elements.
The operator must ensure that the pump can work free of cavitation.
Cavitation destroys the pump.
14 Cleaning
All Watson-Marlow MasoSine Pumps are fully capable of CIP cleaning. Please observe our CIP cleaning regulations.
14.1 Cleaning in own circuit with water, alkali, acid
1. Set control gear to maximum speed (at least 400 rpm).
2. Choke after the pump so that a counterpressure of 3 to 4 bar (44 to 58 psi) arises.
3. Should the required cleaning effect not be achieved after this process,
it is necessary to dismantle the pump.
This is done in a few minutes as described in detail in the operating instructions.
Manual cleaning of the pump can be performed after complete dismantling of the pump.
Pay attention to parts sensitive to breakage!!
14.2 Cleaning in the CIP circuit
14.3 Manual cleaning
Manual cleaning of the pump can be performed after complete dismantling of the pump.
Pay attention to parts sensitive to breakage!!
If the pump is stopped during the process and opened for the purpose of cleaning or checking,
the responsible fitter or electrician must be notified to undertake suitable measures so that the pump
cannot be put into operation (remove fuses, notify electrician).
The pump may also never be put into operation if the housing cover is removed. Should the pump
not yet be connected to the piping system, then reliable care must be taken that the drive machine
cannot be switched on.
Observe the accident prevention regulations!!
14.4 Sterilization
Sterilization of the pump with standard equipment is possible up to 110°C only in standstill!
In the case of special equipment of the pump or higher temperatures, please always firstly consult the manufacturer!
C
C
A
A
U
U
T
T
I
I
O
O
N
N
C
C
A
A
U
U
T
T
I
I
O
O
N
N
C
C
A
A
U
U
T
T
I
I
O
O
N
N
1.
Purging surge
Open the choke valve and let the Watson-Marlow MasoSine Pumpe run
with maximum speed to perform the first rough cleaning.
2.
Purging
S
et the choke valve so that the pressure side of the pump is at least
3.0 bar higher than the suction side.
Open the open/close valve to guarantee cleaning of the series connected
devices.
back to the CIP plant
from CIP plant
Open / Close Valve
Choke Valve
X - bar
X + 3 bar