Maintenance - Lowara FC Serie Instrucciones De Instalacion Y Uso

6.1 Electrical connections
WARNING
6.2 Priming
WARNING
The maximum noise of the electric pump when properly installed and operating within its limits is as per
the table below:
MOTOR POWER
2 POLES
Up to 3 kW
4 kW
from 5.5 to 7.5 kW
from 9.2 to 22 kW
*
Weighted equivalent (A) continuous sound pressure level (LpA) at 1-meter distance from the pump in an open field.

7. Maintenance

The pump does not require any regular scheduled maintenance.
Periodically check: input power, absence of leaks from the mechanical seal and condition of bearings.
7.1 FCE Disassembly
Remove the screws that secure the adapter to the pump body; it is now possible to remove the
motor/adapter/impeller assembly without disconnecting the pipes from the pump body.
To change the mechanical seal, make sure that all parts are clean and use caution to avoid impacts,
jolts, cutting edges; take care not to foul the sealing surfaces with grease.
The screws that fasten the adapter to the pump body must be tightened evenly without applying excessi-
ve force.
7.2 FCS Disassembly
Proceed as directed in paragraph 7.1 but remove the motor/pump support (14) as well.
Please note that the impeller is keyed to the stub shaft fixed directly to the motor shaft extension.
7.3 Assembly
For re-assembly, follow the disassembly procedures in the reverse order. Change the gaskets and any
damaged or worn parts.
Make sure that the rated voltage and frequency correspond to the supply
voltage.
Remove the terminal board cover by first removing the screws.
Carry out the connections as indicated on the back of the terminal board
cover.
Check the motor rotation direction: see the arrows on the pump body. If
necessary, switch two supply wires.
Avoid dry running.
After having filled and bled the system and checked the direction of rotation,
open the gate valves and start the pump. Make sure the pump is operating
within its working limits; the current input must not exceed the rated value. If
necessary, partially close the delivery gate valve or adjust the pressure
switch setting.
Before starting the pump after a long period of inactivity make sure it is not
clogged or obstructed. In the event of obstructions, prise the motor fan with a
screwdriver to make sure that the shaft rotates freely.
MOTOR POWER
4 POLES
Up to 7.5 kW
–
–
–
SOUND
PRESSURE LEVEL (*)
Less than 70 dB (A)
71 dB (A) ± 2 dB (A)
76 dB (A) ± 2 dB (A)
81 dB (A) ± 2 dB (A)
en
SOUND POWER
LEVEL
81±2 dB(A)
86±2 dB(A)
91±2 dB(A)
15