Start Up; Handling And Storing The Product; Handling The Product; Storing The Product - Grundfos S2 Instrucciones De Instalación Y Funcionamiento

5.3 Start up

DANGER
Short circuit
FM Death or serious personal injury
- For FM models in dry installations (version D and
H), we recommend that you also connect an
external earthing.
DANGER
Short circuit
Death or serious personal injury
FM
- Before installation and the first startup of the
pump, check the condition of the cables visually to
avoid short circuits.
Proceed as follows:
1. Lock the main switch in position 0.
2. Check the oil level in the oil chamber. See section
check and oil change.
3. Check that the impeller can rotate freely.
4. Check whether the monitoring units, if used, are operating
satisfactorily.
5. Open the isolating valves, if fitted.
6. Pumps in installation types S and C: Ensure visually that
the pump is properly connected to the auto coupling.
7. Make sure that the pump is submerged in the liquid.
8. Pumps in installation types D and H: Make sure that there
is liquid in the pit and that the pump housing and cooling
jacket are filled with water. Open the vent valve on top of the
cooling jacket, (9) in fig. 21, before or during the startup until
water comes out of the valve. Then close the valve.
Pumps in installation type C: The vent valve must always be
open, also during operation. Check the setting of the level
switches.
Pumps in installation type ST: Make sure that the pump is
properly seated in the column pipe and secured against
rotation of the pump.
9. Start the pump, and check the pump operation for abnormal
noise or vibrations.
In case of abnormal noise or vibrations from the
pump, or other pump or liquid supply failures, stop
the pump immediately. Do not attempt to restart the
pump until the cause of the fault has been found and
the fault corrected.
10. After startup, establish the actual pump duty point as
accurately as possible so that you can check whether the
operating conditions are as desired.
Always operate the pump in accordance with established routines
with scheduled checks of pump monitoring equipment and
accessories, such as valves, etc. Make sure that the pump and
equipment settings cannot be changed by unauthorized persons.
16

6. Handling and storing the product

6.1 Handling the product

Before handling the product, check the following points:
• Lifting equipment and lifting points. See section
the pump.
The pump is equipped with a label indicating the center of gravity
of the pump including installation or transportation accessories.
See fig. 20. The position of the label varies depending on the
pump type and the accessories.
Fig. 19 Symbol of center of gravity
9.3 Oil
Fig. 20 Transportation stand with cable holders

6.2 Storing the product

Leave the cable end protectors on the power and
control cables until you start making the electrical
connection. Whether insulated or not, the free cable
end must never be exposed to moisture or water. Non-
compliance with this may cause damage to the motor.
For long periods of storage, six months or longer, the pump must
be protected against moisture and heat.
If the pump is being stored for more than two
months, turn the impeller by hand at least every two
months to prevent the seal faces of the lower
mechanical shaft seal from seizing up.
If you do not do this, the shaft seal may be damaged
when the pump is started.
If the impeller cannot be turned by hand, contact an
authorized service workshop.
For dry-installed pumps, installation types D and H,
make sure the cooling jacket is empty before storing
the pump.
After a long period of storage, six months or longer, inspect the
pump before putting it into operation. Make sure that the impeller
can rotate freely. Pay special attention to the condition of the
shaft seals, O-rings and the cable entries.
4.1.1 Lifting