Watson-Marlow SPS 600 - Manual (Page 11)

Revision 4.1 / March 2014 11
11 Changing the connection position
Remove the screws on the bearing block. Turn the housing by an angle of 45° to the left or right.
Tighten the screws again. (with 45 Nm)
However, take care that due to the corresponding arrangement of the pressure line in the pump, a certain
residual amount remains. By this measure you make it easier for the pump to draw in highly viscous products.
However, in the case of horizontally lying pressure connection you must absolutely take care that the pressure
line is run so that the pump is always covered with residual liquid.
In this way total dry running is avoided.
12 Changing the direction of rotation
The suction or the pressure side changes on
changing the direction of rotation of the drive.
Then the gate and the gate guide must
absolutely be turned, since other-wise the pump
cannot bring its full output. If the direction of
rotation is changed, the rotation direction arrows
must be turned correspondingly. Further the
suction or pressure connection must be marked.
The set direction of rotation is stated by an arrow.
The pump can run against the set direction only
for a short time. It cannot build up more than 2
bar pressure if the direction of rotation is wrong.
13 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).
The pump can possibly be contaminated by transport, therefore remove the front cover and clean if necessary before start-up.
Before you start up the pump, convince yourself once again that the gate and the gate guide are in the correct position in relation to the
pressure side (see change of direction of rotation).
The operator must ensure that the pump is installed in an appropriate position with all necessary safety
precautions (sensors, switches, pressure gauges, etc.)!
Let the change of direction of rotation on the drive be made only be trained skilled
personnel. The motor must be protected against unintentional switching on!
C C A A U U T T I I O O N N
Liquid level
The pump must always be filled with the corresponding
medium before commissioning and during operation,
with the liquid level above the rotor (see diagram).
The filling of the pump should be done outside the
combustible area.
When the pump runs dry, the
temperature limit for the explosive area
is exceeded!
When the nozzle orientation is changed, the motor must be protected against
unintentional switching on!