Watson-Marlow MR 160 User Manual
Page 10
N:\Konstruktion\Betriebsanleitungen\AKTUELL\MR Serie\TDE MR160.doc
Revision 4
January 13
10
12 Important: Observe before start-up!
If you have performed cleaning or repair work or make the first start-up, check before start-up that all screws are correctly and
completely tightened.
Observe the corresponding regulations in the case of hazardous pumped material (according to ArbStoffV).
Before the first start-up fill with water or pumped material to avoid dry running and to facilitate the suction
process.
The pump is proof against dry running only as long as the heat resistance of the seals is guaranteed. This is
approx. 1 minute under the most unfavourable conditions – as with maximum speed.
The pressure line should point upwards so that residual liquid can always flow back into the pump later. This avoids total dry running.
Further it facilitates the later suction process.
The motor must be connected by an expert according to DIN EN 60204.
The pump can possibly be contaminated by transport, therefore remove the pump cover and clean if necessary before start-up.
Before you start up the pump, convince yourself once again that the Scraper and the Scraper gate guide are in the correct position in
relation to the pressure side (see change of direction of rotation).
Connect the purging
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.
13 Running dry
The pump is proof against running dry only as long as the heat resistance of the seals is guaranteed. This is approx. 1 minute under
most unfavourable circumstances – such as at maximum speed.
If you have a pump with a Mechanical Seal System:
A pump with a Mechanical Seal may never run dry!
Purging should be without pressure, this means that the purging water runs out from the purging system without pressure (thumb test: it
must be possible to stop water with the thumb).
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 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!!
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
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