Jung Pumpen AD 12 ExME, Instruction Manual

Page: 6 / 51

6 6
English
Adjustment of the watchdog timing
For the maximum permissible run-time, ple -
ase refer to the operating instructions of your
pump. The number of minutes is specified in
the Technical data. Use switches S1 - S3 on the
PCB to set a time which is smaller or equal to
this value.
Monitoring time [min]
50,7 44,8 37,8 31,9 27,8 21,8 14,8 8,9
S1 0 1 0 1 0 1 0 1
S2 0 0 1 1 0 0 1 1
S3 0 0 0 0 1 1 1 1
For duplex units: Normal operation with
peak-load function
Set the micro-switch on the PCB to position
"Sp.Last = Ein" (Peak load = On).
For duplex units: Operation without peak-
load function (no parallel pump operation)
Set micro-switch on the PCB to position "Sp.
Last = AUS" (Peak load = Off).
When pressure switch B2 is switched or a mo -
tor protection switch or temperature limiter
is triggered, this causes a change-over to the
standby pump.
The motor contactors are not locked; for this
reason a simultaneous run of the pumps is
not completely ruled out. If this could result in
problems, a motor contactor lock must be fit -
ted.
For duplex units: Operation as a single
pump unit
The control unit can also operated with only
one pump connected. For this purpose, use an
insulated core to bridge terminals 30/32 for the
pump that is not connected. Both motor pro -
tection switches must be switched on.
Set the selector switch of the unconnected
pump to position "0" and of the connected
pump to position "Automatic".
Shutting down the internal alarm buzzer
Remove the sealed jumper "BRX" on the right
next to the buzzer. To prevent the jumper from
getting lost, plug it onto a pin of the two-pole
pin connector.
External alarm buzzer (accessory)
ATTENTION! When an external buzzer is con -
nected, the integrated buzzer must be shut
down.
A 12V buzzer with a max. current consumption
of 30 mA can be connected to terminals "S+"
and "S-" with the correct polarity.
Remote failure indication system
Connect the remote system to terminals 40/41
on the PCB. The potential-free NO contact of
the centralised alarm can be loaded with a
maximum of 5 A / 250 VAC.
External 230 V flashlight or warning light
(accessory)
Connect a 230 VAC lamp (1 A max.) to terminals
N and 43. Lay an insulated wire bridge from ter -
minal U~ to terminal 42. The electric circuit is
protected by F1.
Set micro-switch "Alarm signal" as follows:
Flashing alarm light: Position "Continuous" (= )
Warning light: Position "Flashing" (_Π_Π_ )
The light can be acknowledged by pressing the
green reset button.
Battery pack for mains-independent oper-
ation of the alarm system (accessory)
Connect the battery pack to the connection
clip, and use the existing cable tie to attach to
the intended position on the PCB.
An empty battery is ready for operation within
approx. 24 hours. It is fully charged after about
100 hours.
ATTENTION!
Check the function of the bat -
tery pack at regular intervals! The service life is
about 5 to 10 years. Note the insertion date on
the battery pack and after five years the battery
pack should be replaced as a precautionary
measure.
Only use original manufacturer’s
parts! If dry-cell batteries are used
there is a danger of explosion!
Fitting the LCD time meter (accessory)
The positions on the printed circuit board for
each pump are marked "Time meter". Shorten
the connecting wires of the time meter to ap -
prox. 10 mm and insert them in the printed
circuit board. The connecting wires and also
the connectors on the printed circuit board are
marked "N-P-I-R".
After the mains voltage has been connected,
the LCD should be visible. If no display appears,
switch the mains voltage off again, disconnect
the time meter and turn it through 180 degrees
before reconnecting it.
External switch-on delay mechanism (ac -
cessory)
When the ESV/1 module is used, the internal
switch-on delay must be deactivated, and the
micro-switch on the printed circuit board set to
"AUS" (off).
Retrofitting a dry running protection (ac-
cessory)
All control units with the additional endorse -
ment "TLS" are fitted with a dry running protec -
tion as a standard feature.
In explosion-proof units, a dry running protec -
tion must be fitted. This can be retrofitted with
an accessory kit. A float switch (KT-T) is con -
nected to the control unit via the ±24V safety
barrier supplied.
Maintenance
The control unit is maintenance-free. Depend -
ing on the quality of the wastewater, the pres -
sure sensors must be checked at regular inter -
vals, and any deposits must be removed! The
correct setting of the shut-off delay must then
be checked by observing the pumping process
in automatic operation.
The shut-off delay is correct if the pressure sen -
sors have surfaced completely from the waste -
water and the pump is switched off before it
draws air. Seek the help of an expert to remedy
any deviations.
A potentially existing 9V battery pack for a
mains-independent alarm must be checked at
regular intervals. For this purpose de-energise
the control unit and trigger the alarm (by trig -
gering the motor protection switch, for exam -
ple). The pitch and volume of the buzzer must
not change significantly for several minutes
- otherwise replace the battery pack. Battery
packs which are more than five years old should
be replaced as a precautionary measure.