Grundfos SE1 50 Notice D'installation Et De Fonctionnement page 29

CAUTION
Hot surface
Minor or moderate personal injury
‐
Do not touch the surface of the
pump while it is running.
7.1 General startup procedure
The pump must not run dry.
If the environment is potentially
FM
explosive, use pumps with Ex
approval.
In case of abnormal noise or vibration,
stop the pump immediately. Do not
restart the pump until the cause of the
fault is identified and eliminated.
CAUTION
Sharp element
Minor or moderate personal injury
‐
Do not touch the sharp edges of
the impeller without wearing
protective gloves.
After a short period of storage, vent the
pump to let any explosive gasses
escape.
7.1.1 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.
3. Check that the system, bolts, gaskets, pipes,
and valves are in correct condition.
4. Check 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.
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. If the level is below the
clamp, add liquid to the tank until the minimum
level is obtained.
12. Remove trapped air from the pump housing by
tilting the pump by the lifting chain.
13. Start the pump and let it run briefly. Check if
the liquid level is falling. A correctly vented
pump quickly lowers the liquid level.
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