Maintenance; Routine Maintenance; Extraordinary Maintenance; Troubleshooting - ITT Lowara SINGLEBOX Serie Manuel D'utilisation

7. Maintenance

Observe the following directions if you need to carry out maintenance operations on the product.
Maintenance operations must be performed by skilled personnel only.
Before carrying out any maintenance operations, make sure that all the connections (even those
that are potential-free) are voltage-free.
Read the operating instructions for the electric pumps and the electric panel.

7.1 Routine maintenance

Periodically check the internal conditions of the basin. To do this, unscrew the cover and remove it. Clean
the basin at least once every year, especially around the areas where the float switches are located.
Always refer to the codes, regulations and standards locally in force.

7.2 Extraordinary maintenance

Use adequate equipment and protections. Observe the accident prevention regulations in force.
Lift and handle the pumps carefully, using suitable hoisting equipment
Use only original spare parts to replace any worn or faulty components.
For lifting stations equipped with drop device, the pump can be extracted using the handle by hooking a
rope or chain onto it.
Do not use the power cord to lift or move the electric pump.
For lifting stations equipped with PVC pipe fittings, the pump can be extracted after unscrewing the ex-
ternal union.
For further information, refer to chapter 12.

8. Troubleshooting

Follow the instructions provided in the operating manuals for the pump and electric panel.
For further information, refer to chapter 7.
PROBLEM
The electric pump does not start.
The main switch is on
The electric pump starts up but
the thermal protection is
immediately triggered or the
fuses blow
Directions for users and maintenance personnel
PROBABLE CAUSE
No power supply
Triggering of pump's thermal
protector
Triggering of panel's themal
protector
Blown pump or auxiliary circuit Replace the fuses
protection fuses
Problems with external
control device (float switch)
Motor overload
Motor power cord is damaged Check the cord
Directions for maintenance personnel
POSSIBLE SOLUTION
Restore the power supply
Wait for the pump's motor to cool
Reset the thermal protection
Check the device and the related
connection wires
Check the electric pump's working
conditions and reset the protector
en
31