Troubleshooting; Disposal; Warranty - Lowara SINGLEBOX PLUS series Installations- Und Bedienungsanleitungen

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8. Troubleshooting

Follow the instructions in the operating manuals of the electric pump and of the electric panel, where
applicable.
For further information, consult section 7.
PROBLEM
The electric pump does not start.
The main switch is on
The electric pump starts up but the
thermal protector is immediately triggered
or the fuses blow
The electric pump starts up but, after a
short period of time, the thermal
protector is triggered or the fuses blow
The electric pump starts up but, after a
varying period of time, the thermal
protector is triggered.
The pump starts up too frequently
The electric pump starts up but does not
deliver the required flow
The system's general protection cuts in.
The system's differential thermal-magnetic
protection cuts in.

9. Disposal

Observe the regulations and codes locally in force regarding sorted waste disposal. If possible, reutilise the
packaging for other purposes.

10. Warranty

Please refer to the sales contract for further information.
22
PROBABLE CAUSE
No power supply
Triggering of electric pump thermal
protector
Triggering of thermal relay or motor
protector found in the electric control
panel
Pump or auxiliary circuits protection fuses
blown
Problems on the external control device
(float switch)
Electric motor short circuit
Power supply cable is damaged
Thermal protector or fuses not suited to
the motor current
A phase in the power supply is missing
Power supply voltage not within the
motor's working limits
The electric panel is situated in an
excessively heated area or is exposed to
direct sunlight
Incoming liquid too hot
Excessively large solids have clogged the
impeller
Filaments have blocked the impeller (for
versions that do not feature a "vortex"
type impeller)
Leaks in check valve or system
Float switch incorrectly adjusted
Incorrect direction of rotation
Delivery pipe blocked or the check valve is
dirty or there is an air pocket
Electric pump is damaged or its internal
parts are clogged
Short circuit
Ground leakage
Information for installation and maintenance personnel
Information for users and maintenance personnel
POSSIBLE SOLUTION
Restore the power supply.
Wait for the electric pump motor to cool.
Reset the thermal protector.
Replace fuses.
Check the device and the relative
connection cables.
Check the operating conditions of the
electric pump and reset the protection.
Check the components and replace as
necessary.
Check the power supply
Check the operating conditions of the
electric pump.
Protect the panel from heat sources and
from the sun.
Check the operating conditions of the
electric pump.
Remove the electric pump and clean it. If
the problem persists, check the operating
conditions of the electric pump.
Check and locate leaks. Repair or replace
the components.
Check the float switch.
Check the direction of rotation and, if
necessary, exchange two phases in the
motor or electrical panel if three-phase or
check all the connections if single-phase.
Check the installation.
Consult the relative instructions in the
pump manual.
Check the electrical system
Check insulation of the electrical system
components.