Danger Of Frost; Maintenance And Cleaning; Modifications And Spare Parts - DAB PULSAR Installationsanweisung Und Wartung

9. CHECKING THE DIRECTION OF ROTATION (for three-phase motors)
The direction of rotation must be checked each time a new installation is made.
Proceed as follows (Fig.4):
1. Place the pump on a flat surface ;
2. Start the pump and stop it immediately ;
3. Carefully observe the kick-back on starting, looking at the pump from above. The
direction of rotation is correct, that is clockwise, if the protection cap moves as in
the drawing (anti-clockwise).
If it is not possible to check as described above because the pump is already
installed, check as follows :
1. Start the pump and observe the water flow rate.
2. Stop the pump, switch off the power and invert two phases on the supply line.
3. Restart the pump and check the water flow rate again .
4. Stop the pump .
The correct direction of rotation is the one that gives the higher flow rate.
10. STARTING
10.1 Priming of the PULSAR DRY
Before starting, prime the pump, filling it with the liquid that is to be pumped through the hole to be made in the delivery pipe. (Fig.2, pag. 2).
Priming must be repeated whenever the pump has remained out of use for long periods of time or when air has got into the system.
Turn the differential magnetothermal switch upstream from the pump to position I (ON) and wait until the water comes out of the delivery
•
pipe.
If malfunctions are found, disconnect the pump from the power supply, turning the differential magnetothermal switch to position 0 (OFF)
•
and consult the chapter on "TROUBLESHOOTING".
The pump may be started and stopped:
•
- Manually by means of the differential magnetothermal switch upstream from the system.
- Automatically for versions with a float when water level rises.
10.2 Regulating the float switch PULSAR
By lengthening or shortening the stretch of cable between the float and the fixed point (cable block on the handle - Fig. 3, pag. 3) it is possible to
regulate the level at which the pump switches off (STOP). Ensure that the float can move freely.
Ensure that the stop level does not uncover the filter.
11. PRECAUTIONS
The suction filter in PULSAR electropumps must always be present during pump operation.
•
The pump must not be started more than 30 time in one hour so as not to subject the motor to excessive thermal stress.
•
DANGER OF FROST: When the pump remains inactive for a long time at temperatures of less than 0°C / 32°F, it is necessary to
•
ensure that there is no water residue which might freeze, causing cracking of the pump components.
For PULSAR DRY electropumps, drain the pump through the drainage cap located behind the intake coupling (Fig.2, pag. 2).
This operation is also recommended in the case of prolonged inactivity of the pump at normal temperature.
If the pump has been used with substances that tend to deposit, rinse it after use with a powerful jet of water so as to avoid the
•
formation of deposits or scale which would, tend to reduce the pump characteristics.

12. MAINTENANCE AND CLEANING

In normal operation the pump does not require any type of maintenance, thanks to the mechanical seal lubricated in an oil bath and
to the greased-for-life bearings. The electropump can only be dismantled by competent skilled personnel, in possession of
the qualifications required by the legislation in force. In any case, all repair and maintenance jobs must be carried out only after
having disconnected the pump from the power mains. During dismantling it is necessary to pay great attention to sharp parts which may cause
injury.

13. MODIFICATIONS AND SPARE PARTS

Any modification not authorized beforehand relieves the manufacturer of all responsibility. All the spare parts used in repairs
must be original ones and the accessories must be approved by the manufacturer so as to be able to guarantee maximum safety of
the machines and systems in which they may be fitted.
ENGLISH
17
FIG. 4