Troubleshooting - DAB E2D Installationsanweisung Und Wartung

10.

TROUBLESHOOTING

FAULTS
1. One of the two A. The magnetothermal switch of the panel (ref.
motors is not fed
B.
C.
D. The remote control switches ref. KM1 and
E.
F.
G. The exchange module SZ2 is faulty.
H. At least one of the fuses ref. FU1, FU2, FU5
A. Pump P1 or P2 impeller blocked.
2. The protection
ref. QM1 or
B.
QM2 intervenes.
3. The thermal A. Check the working environment temperature
protection in the
windings of B.
motor trips. C.
A. The floats are not correctly connected to the
4. The pump
continues
B.
delivering and
does not respond C.
to external
D. The exchange module SZ2 is faulty.
commands.
A. The connections of the leads from the motor
5. The remote
control switch
ref. KM1-KM2 is
fed
intermittently.
6. The remote A. The float P is not connected exactly to the
alarm is not
working. B.
C.
7. The panel does A. The relay KA1 is faulty.
not B.
automatically
exchange the
starting order of
the two pumps.
CHECK (POSSIBLE CAUSES)
QM1 - QM2) or the differential automatic
switch on the distribution panel have tripped.
There is not voltage on the motor supply
terminals.
The protection of the internal transformer has
tripped.
KM2 vibrate.
Tripping of the OIL probe protection
(presence of water in the seals chamber).
Tripping of the motor protector KK.
has tripped.
The timer for regulating strong static
torque time is set over 4 seconds
(only for
E2D 6 M HS ).
of the electropumps.
Impeller blocked or clogged.
Check the state of the rotor shaft bearings of
electropump.
control panel.
The floats are faulty.
The remote control switch KM1 or KM2 is
faulty (contacts are stuck).
are inverted on the control unit terminals.
(only for panels with thermal protection for
the motor).
panel, or does not follow the water level.
The float is faulty.
The acoustic or luminous signal ref.Q is not
correctly connected to
terminals.
The module SZ2 is faulty.
ENGLISH
A. Check the insulation of the pump cables, of the
pump
magnetothermal switch located in the panel
(ref. QM1 - QM2) or the differential switch on
the distribution panel.
B. Check the control unit connecting cables and
any switches or insulating switches in the
system.
C. Turn off the main switch for three minutes, then
switch it on again. Starting of the electropump
excludes the fault. If the electropump is not fed,
or is temporarily fed, identify any short circuits
in the secondary circuit of the transformer.
D. The supply voltage is insufficient.
E. Check for any infiltrations of water in the seals
chamber.
F. See point 3.
G. See paragraph 8.11
Find any short circuits in the primary or
H.
secondary circuit of the transformer and
reset the fuse that tripped.
A. Carry out maintenance to free the impeller.
Set the timer
B.
ref. KT1-KT2.
A. Reduce the temperature of the fluid to be
pumped.
B. Carry out maintenance to free the impeller.
C. Change the bearings of pump if worn.
A. Correctly connect the pressure switches and
check operation of the system (par. 8.4 - 8.6).
B. Change the floats.
C. Change the part.
D. See paragraph 8.11
A. Connect the leads from the motor, strictly
respecting the enclosed diagrams.
A. Correctly connect the float and check operation
of the system.
B. Change the float.
C. Check the connections and the correspondence
the respective of the electrical characteristics.
A. Change the component.
B. See paragraph 8.11
27
REMEDY
or of the floats. Reset
correctly as indicated in
the