DAB DP 82 T [29/112] Do not start the pump unless it has been completely filled with fluid
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DAB DP 82 T [29/112] Do not start the pump unless it has been completely filled with fluid

DAB EURO 50/50 M [29/112] Do not start the pump unless it has been completely filled with fluid
ENGLISH
19
9.
STARTING UP
9.1
Do not start the pump unless it has been completel
y
filled with
fluid.
Before starting up, check that the pump is properly primed; fill it completely with clean water by
means of the hole provided after having removed the filler cap on the pump body. This ensures
that the mechanical seal is well lubricated and that the pump immediately starts to work regularly.
(Fig. F). Dry operation causes irreparable damage to the mechanical seal. The filling cap
must then be screwed back on carefully.
9.2
Switch on the power and check, on the three-phase version, that the motor is turning in the correct
direction; this should be in a clockwise direction, looking at the motor from the impeller side. Fig.
G If it is turning in the wrong direction, invert the connections of any two wires on the terminal
board, after having disconnected the pump from the power mains.
10. PRECAUTIONS
10.1
The electropump should not be started more than 20 times in one hour so as not to subject the
motor to excessive thermal shock.
10.2
DANGER OF FROST: When the pump remains inactive for a long time at temperatures of less
than 0°C, the pump body must be completely emptied through the drain cap Fig. H, to prevent
possible cracking of the hydraulic components. This operation is advisable even in the event of
prolonged inactivity at normal temperature.
10.3
When starting after long periods of inactivity, the starting-up operations listed above must be
repeated.
11. MAINTENANCE AND CLEANING
In normal operation, the pump does not require any specific maintenance. However,
it may be necessary to clean the hydraulic parts when a fall in yield is observed. The
electropump must not be dismantled unless by skilled personnel in possession of
the qualifications required by the regulations in force. In any case, all repairs and
maintenance jobs must be carried out only after having disconnected the pump from
the power mains.
12.
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.
In the event of damage to the power cable of this appliance, the repair
must be carried out by skilled personnel, in order to prevent all risks.
12.1
Removal and replacement of the supply cable
Before starting, ensure that the electropump is not connected to the power network.
A) For versions without a pressure switch
Remove the condenser cover, unscrewing the four screws on it. Unscrew the three terminals L - N -
and disconnect the brown lead, the blue lead and the yellow-green lead, coming from the supply cable,
after having slackened the grommet.
B) For versions with a SQUARE D pressure switch
 Section of cable with plug from the pressure switch: unscrew the screw from the cover of the pressure
switch using a screwdriver and remove the cover. Remove the yellow-green lead, slackening the earth
screw, the blue lead and the brown lead from the respective terminals at the side, slackening the screws on
the terminals. Remove the cable blocking terminal, slackening the respective screws, and slip off the
cable which is now disconnected.
 Section of cable from the pressure switch to the terminal board: unscrew the nut from the cover of the
pressure switch using a screwdriver and remove the cover. Remove the yellow-green lead, slackening the
earth screw, the blue lead and the brown lead from the respective central terminals, slackening the screws
on the terminals. Remove the cable blocking terminal, slackening the respective screws, and slip off the
cable which is now disconnected. Remove the condenser cover, unscrewing the four screws on it.
Unscrew the three terminals L - N -
and disconnect the brown lead, the blue lead and the yellow-green
lead, coming from the pressure switch, after having slackened the grommet.

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