Florabest FTP 400 A1 - Manual (Page 51)

51
GB MT
Faults - Causes - Remedies
Faults Causes Remedies
Pump does not start
- Mains voltage is not applied
- Float switch ( 6) does not
switch
- Check mains voltage
- Bring float switch into higher
position
Pumps has no dis-
charge
- Rotary disk ( 8) or base
( 10) grating blocked
- Reduces pump perform-
ance, through severely
contaminated water and
additions in the water which
produce a grinding effect
- Backflow stop ( 14) is
incorrectly fitted or faulty
- Use a water jet to clean the
rotary disk or base grating
- Clean pumps and replace
sealing ring ( 20) as nec-
essary
- Check the backflow stop’s
connection. Change it if nec-
essary (see “Maintenance
and Cleaning”)
Pump does not switch
off
- Float switch cannot drop - Set up pumps correctly on
the pit base
Flow rate insufficient
- Rotary disk ( 8) or base
( 10) grating blocked
- Reduces pump perform-
ance, through severely
contaminated water and
additions in the water which
produce a grinding effect
- Backflow stop ( 14) is
incorrectly fitted or faulty
- Backflow stop ( 14) re-
duces pump performance
- Use a water jet to clean the
rotary disk or base grating
- Clean pumps and replace
sealing ring ( 20) as nec-
essary
- Check the backflow stop’s
connection. Change it if nec-
essary (see “Maintenance
and Cleaning”)
- Remove the backflow stop
from the adapter (see “Start-
up”)
Pump switches off
after a short period
- Motor contactor disconnects
the pumps because of water
pollution that is too severe.
- Water temperature too high,
motor contactor breaks
- Pull out power plug and
clean the pump as well as
shaft
- Note maximum water tem-
perature of 35°C!