English (GB)
14
4.1 Checking the direction of rotation
An arrow on the top cover indicates the correct
direction of rotation. Correct direction of rotation is
clockwise when viewed from above.
When started, the pump will jerk in the opposite
direction of the direction of rotation. See fig. 10.
Procedure
The direction of rotation must be checked in the
following way every time the pump is connected to a
new installation.
Proceed as follows:
1. Let the pump hang from a lifting device, for
example the hoist used for lowering the pump
into the pit.
2. Start and stop the pump while observing the
movement or jerk of the pump. If connected
correctly, the pump will rotate clockwise, and it
will jerk counterclockwise. See fig. 10.
3. If the direction of rotation is wrong, interchange
any two of the phases in the power cable. See
figs 6 to 9.
Fig. 10 Jerk direction
4.2 Startup
4.2.1 SE1 pumps
1. Remove the fuses and check that the impeller
can rotate freely. Turn the impeller by hand.
2. Check the condition of the oil in the oil chamber.
See also section 8.2 Checking and changing the
oil.
3. Check that the system, bolts, gaskets, pipes and
valves etc. are in correct condition.
4. Check the direction of rotation. See section
4.1 Checking the direction of rotation.
5. Mount the pump in the system.
6. Switch on the power supply.
7. Check whether the monitoring units, if used, are
operating satisfactorily.
8. For pumps with sensor, switch on IO 113 and
check that there are no alarms or warnings. See
section 8. Servicing the product.
9. Check the setting of the air bells, float switches
or electrodes.
10. Open the isolating valves, if fitted.
11. Check that the liquid level is above the upper
edge of the clamp on the pump. If the level is
below the clamp, add liquid to the pit until the
minimum level is obtained.
12. Remove trapped air from the pump housing by
tilting the pump by means of the lifting chain.
13. Start the pump and let the pump run briefly, and
check if the liquid level is falling. A correctly
vented pump will quickly lower the liquid level.
After one week of operation or after replacement of
the shaft seal, check the condition of the oil in the
chamber. For pumps without sensor, this is done by
taking a sample of the oil. See section 8. Servicing
the product for procedure.
Only start and run an unsubmerged pump
for a few seconds to check the direction of
rotation.
TM06 6007 0216
CAUTION
Sharp element
Minor or moderate personal injury
- Wear protective gloves to avoid being
cut by the sharp edges of the impeller.
If the pump has not been in operation for
some time, vent it to let any explosive
gasses gathered in the pump escape. See
step 12 below.
In case of abnormal noise or vibrations
from the pump, other pump failure, power
supply failure or water supply failure, stop
the pump immediately. Do not attempt to
restart the pump until the cause of the fault
has been found and the fault corrected.
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