Watson-Marlow SPS 600 User Manual
Page 12
Revision 4.1 / March 2014
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 Purging
•
The purging medium must correspond at least to the quality of pure drinking water. Under no circumstances may it be
contaminated by particles (sand or other dirt). This would automatically lead to failure of the seals.
We also recommend using transparent plastic pipes as purging piping.
•
Purging should be without pressure, i.e. the purging water running out should run out from the purging system without pressure
(thumb test: it must be possible to stop water with the thumb).
•
To protect the pump against running dry, fill this with some water, possibly through a separate filling valve fitted on the suction or
pressure pipe.
14.1 Static purging device
Before start-up you must fill the purging device (if also ordered) with a suitable purging
liquid (depending upon the product to be pumped).
The purging liquid is filled into the sight glass above through the folding lid until the liquid
level in the sight glass is just below the bent outlet of the pipe.
The pump is rinsed without pressure, e.g. the draining rinsing water should be allowed to
drain out of the system without pressure (thumb test: it must be possible to stop the water
with your thumb).
15 Cleaning
All Watson-Marlow MasoSine Pumps are fully capable of CIP cleaning. Please observe our CIP cleaning regulations.
15.1 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 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!!
15.2 Cleaning in the CIP circuit
Liquid level
Fill a suitable
liquid above
1. Purging surge
Open the choke valve and let the Watson-Marlow MasoSine Pumps
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.
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
back to the plant
Choke
Valve
Open / Close Valve
X -
bar
X + 3 bar
from CIP plant