DAB K 40/22 HA, Instruction For Installation And Maintenance

Page: 32 / 76

ENGLISH
30
15. TROUBLESHOOTING
Type of problem Causes Solutions
The pump does not start
Switch in stop position (O)
Change to manual (
I
) or automatic (
II
)
position
The minimum flow rate does not allow
the flow switch to start (the rate must be
more than 2.5 l/Min)
Change to manual position (
I
)
No current Check fuse and power supply
Presence of material on the flow switch
To clean the flow switch, follow the
instructions in point 13
Starting capacitor damaged Change the capacitor
The pump does not
generate pressure
Main valve closed Open main valve
Presence of air in the system Turn on the tap, activate the pump
Impeller damaged Change the impeller
The pump is vibrating in an
abnormal way without
making noise
Unstable installation Adjust the loose parts
The pump is vibrating,
abnormal rattling
Cavitation
Reduce the height of the input pipe,
increasing its diameter
Overpressure
Move the output valve or change the
model
The pump is vibrating,
abnormal friction noise
Impeller partly blocked by presence of
metal material
Remove the material
Mechanical seal damaged Change the seal or the washer
Motor shaft is damaged Change the motor shaft
The cover of the fan motor is rubbing
against the fan
Fit the fan cover again
The pump starts even if the
tap is turned off
Switch in manual position (
I
)
Change to automatic (
II
) or stop
position (0).
Flow switch not working due to presence
of material To clean the flow switch, follow the
instructions in point 13
Flow switch damaged Change the flow switch
16. DISPOSAL
This product or any part of it must be disposed of correctly:
- Use public or private local systems for waste collection.
- If that is not possible, contact Dab Pumps or the nearest authorised service workshop