DAB DTRON2 35/90 M Instrucciones De Instalación Y Mantenimiento página 20

• From the 1st to the 48th attempt: 1 restart every 30 minutes for 20 seconds each
• From the 49th attempt: 1 restart every 24 hours for 20 seconds each
 The DRYRUN alarm can be reset manually: if after this reset the pump still does not detect flow and pressure, attempts will last 20
seconds.
 The pump electronics have an anti-burping system that prevents false priming due to possible water bubbles.
ANTIFLOOD
The pump keeps the motor off for 3 seconds when starting. If hydraulic flow is detected during this period, the motor will be kept off as a
mechanical malfunction of the pump shutter may occur.
To avoid the same problem, which would lead to an indefinite start-up of the pump motor (as the presence of hydraulic flow would always be
detected), during normal continuous operation, the motor will be switched off every 60 minutes.
If the hydraulic flow does not go to zero, as expected, the pump goes into ANTIFLOOD alarm and its motor will be kept off.
If this alarm is present, the pump must be switched off. Mechanical problems with the non-return valve must be solved. If the valve is still
mechanically released, e.g. due to vibration of the pump body, the ANTIFLOOD alarm will be removed.
5 CLEANING STORAGE MAINTENANCE
The pump does not require any maintenance. Frost can damage the pump. In very cold temperatures, remove the pump from the
liquid, empty it and store it away from frost. Before any cleaning work is carried out, the pump must be disconnected from the power
mains.
Once the pump has been removed from the liquid, it is advisable to clean the following parts with a simple jet of water:
- Filter (open, see figure 1A)
- Suction filter with float, in case of version X (see figure 3)
- Non-return valve. In this case, remove the part concerned as shown in figure 11.
Be sure to reassemble all parts correctly.
6 TROUBLESHOOTING
Before starting to look for faults it is necessary to disconnect the power supply to the pump (take the plug out of the socket). If the
power cable or any electrical part of the pump is damaged, the repair or replacement must be carried out by the manufacturer or
by their technical assistance service, or by a person with equivalent qualifications, so as to prevent any risk.
FAULTS
The pump does not turn on
or does not stay on.
The pump does not deliver
water
The flow rate is insufficient
Pump stops (possible
tripping of the thermal safety
switch)
PROBABLE CAUSES
1. Pump is not powered
2. No water
3. The non-return valve is blocked
1. The suction grid or the pipes are blocked
2. The impeller is worn or blocked
3. The head required is higher than the pump's characteristics
1. The suction grid is partly blocked
2. The impeller or the delivery pipe are partly blocked or encrusted
1. The liquid to be pumped is too thick and overheats the motor.
2. The water temperature is too high
3. A solid body is blocking the impeller
4. Power supply not in accordance with data plate values
ENGLISH
14
REMEDIES
1. Check power supply
2. Restore the water level
3. Remove obstruction on the non-return
valve
1. If worn, replace the impeller, if blocked,
remove the blockage: remove the impeller
inspection cap and turn the impeller to unlock it.
2. Replace the impeller or remove the
blockage
1-2 Remove any obstructions
1-2-3-4 Disconnect the plug and remove the
cause that caused the overheating, wait for
the pump to cool down and reinsert the plug.