Check Of Direction Of Rotation; Installation; Start-Up; Maintenance And Repair - Lowara SEKAMATIK 300 D Series Installation And Operation Instruction Manual

Red LED „Failure Pump 2"
- Flash Signal
The Failure-LED flashes when the control unit has moni-
tored several pump operation circuits longer than 2 minutes
each. Please contact your XYLEM service.
Red LED „Alarm"
- Permanent Signal
The red LED illuminates in case of to high liquid level in
tank. Together with the red LED, the built-in acoustic alarm
is activated if the switch in the front cover is in position
„On". Furthermore, the external fault signal device, if fitted,
is activated.
If the red LED illuminates together with the two green LEDs
the pumps are operating, but the liquid level in the tank is
above the alarm level. The alarm is automatically reset
when the liquid level has been lowered below the alarm
level.
If the red LED illuminates without an illumination of the yel-
low LED „Failure" and none or only one green LED illumi-
nates, please contact your XYLEM service.
Yellow LED „Direction of rotation" (only 3-ph models)
The white LED in the front cover of three-phase controllers
indicates wether the phase sequence of the mains connec-
tion is correct. If the LED is illuminated, the phase se-
quence is wrong.
Note : This function does not prevent the motor from start-
ing and rotating in the wrong direction because it does not
measure the phase sequence to the motor.
Therefore, the direction of rotation of three-phase pumps
must always be checked if the cable between pump and
controller has been removed (see 5.3.).
XYLEM ServCom Controller for adjusting and monitor-
ing operation data is available as an accessory.

5.3. Check of Direction of Rotation

1 Ph-pumps do not require any check, as
they always run with the correct direction of
rotation.
Put the pump vertical on the ground and lift
one edge. Start the motor. Viewed from
above, the unit must jerk anti-clockwise, as
the correct direction of rotation is clockwise.
If the direction of rotation is wrong, inter-
change two of the phases of the electric
power supply. Using an original XYLEM
control box with CEE-plug, this may be done
by a 180° turning of the small round pole-
socket at the plug-end with a screwdriver.

6. Installation

If the pump is installed in a sump, the sump opening
must be covered with a tread-safe cover after installation.
The operator has to prevent damage through the flood-
ing of rooms caused by defects of the pump through the
use of appropriate measures (e.g. installation of alarm
units, backup pump or like that).
Fasten the tank to an even floor with expansion bolts.
Before installing the disposal units make sure that the all
national instrucions and the general measures for health
protection and industrial protection for the installation of
disposal units (DIN 1986) are observed. Furthermore plea-
se pay attention to the hints below:

Install the unit in that way, that the operation and ser-
vice elements are easily accessable. Make sure that
there is enough space (approx. 50 cm) between the
horizontal inlet and any wall.

Mount a gate valve into the inlet pipe and the dis-
charge pipe to guarantee an easy service or demount-
ing of the unit .

To avoid sediment build-up in the discharge pipe, the
pipe, and the liftimg station, should be dimensioned for
a water velocity of minimum 0,7 m/s, for vertical pipes,
however, not lower than 1,0 m/s.

The incoming sewer could be ensues at the horizontal
inlet through a WC-direct connection with 180 mm, 210
mm, or 250 mm, or a DN 100 or DN 50 effluent pipe.
Vertical inlets (DN 100 / DN 40 and DN 150 / DN 40)
for service pipe lines are existing. Cut off the blanked
off the vertical or horizontal inlet and connect a incom-
ing sewer inlet which correspond to the diameter of the
inlet.

The diameter of the discharge pipe must be DN 80 and
should not installed in close arcs. The discharge pipe
must conduct over the sewer level, that means con-
stantly rising over that niveau and subsequently as a
loop directly to the collecting conduit.

To prevent a freezing of the discharge pipe please iso-
late the complete discharge pipe up to the sewer level.

Directly above the swing check valve mount a gate
valve into the discharge pipe.

For a trouble free operation of the pneumatic level con-
trol it is absolutly necessary that the pressure hose be-
tween tank and control box is installed without loops,
bending and constantly rising.

Cut off the blanked off end of the air vent and connect
a DN 70 vent pipe to the tank by means of the flexible
connection supplied. The vent pipe should be led out
into the open air in accordance with local regulations.

Mount the supplied pump controller flood protected on
the wall in accordance with local regulations.

A manual diaphragm pump is available as an accesso-
ry. The pump is connected to the 1" tank port.
The manual diaphragm pump is used for draining the
tank in the event of pump failure. Above the diaphragm
pump must be fitted with a non-return valve on the
discharge side. To facilitate service of the diaphragm
pump, it is advisable to fit a 1" isolating valve to the
tank port. The pipe must conduct over the sewer level,
that means constantly rising over that niveau and sub-
sequently as a loop directly to the collecting conduit.

7. Start-Up

Never let the pump run dry for a long time of period, as
it will destroy the pump (danger of overheating).
Before starting the disposal unit make sure that all isolating
valves are open and check that the unit runs satisfactorily.
Make sure that the correct phase sequence was proofed at
the 3-ph models (see 6.3.).
Turn the operation switch into the position "Auto".
In combination with the pneumatic level control the pump
starts and stops according to the liquid level in the tank.

8. Maintenance and Repair

In case of a defect of the pump, a repair shall be car-
ried out only by the manufacturer or through an authorized
workshop. Modifications of the pump must be confirmed by
the manufacturer. Only XYLEM spare parts shall be used.
In accordance with the product liability law we point out
that we shall not be liable for damages caused by our
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