Startup - Grundfos SE Service Instructions Manual

9. Startup

Make sure the pump is connected to an overcurrent protective device.
No automatic disconnection device is applied in the product.
DANGER
Electric shock
Death or serious personal injury
‐
Make sure the pump is grounded.
WARNING
Electric shock
Death or serious personal injury
‐
Make sure the connections are correct.
CAUTION
Hearing impairment
Minor or moderate personal injury
‐
Use hearing protection when working nearby an environment with a sound pressure level above 70 dB(A).
In case of abnormal noise or vibrations, stop the pump immediately. Do not restart the pump until the cause of the fault is identified
and eliminated.
1. Remove the fuses or switch off the main switch.
2. Check the motor liquid level in the cooling chamber.
3. Check if the impeller can rotate freely.
4. Check if the switches are closed, replace if necessary.
5. Check whether the monitoring units, if used, are operating properly.
6. For pumps in a submerged installation, make sure that the pump is submerged in the liquid.
7. Open the isolating valves, if fitted.
8. Check if the system is filled with liquid and vented.
9. Check the settings of the level switches.
10. Start the pump and check the operation for abnormal noise or vibrations.
11. After startup, the actual pump duty point must be established. Make sure the operating conditions are met.
The pump may only be started for a short period without being submerged for checking the direction of rotation. The correct
direction is highlighted on the pump.
Always operate the pump in accordance with established routines and perform scheduled checks of pump monitoring equipment and
accessories. Make sure that the pump and equipment settings cannot be changed by unauthorised persons.
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