15
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
yellow LED „Failure“ and none or only one green LED
illuminates, please contact your HOMA 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 connection is correct. If the LED is illuminated, the
phase sequence is wrong.
Note : This function does not prevent the motor from
starting 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 6.3.).
HOMA ServCom Controller for adjusting and
monitoring operation data is available as an
accessory.
6.3. 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,
interchange two of the phases of the
electric power supply. Using an
original HOMA 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.
7. 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
flooding 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
please pay attention to the hints below:
•
Install the unit in that way, that the operation and
service 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
discharge pipe to guarantee an easy service or
demounting 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 incoming 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
constantly rising over that niveau and subsequently
as a loop directly to the collecting conduit.
•
To prevent a freezing of the discharge pipe please
isolate 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
control it is absolutly necessary that the pressure
hose between 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
accessory. 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 subsequently as a loop
directly to the collecting conduit.
8. 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.
9. Maintenance and Repair
Before maintenance or repair disconnect the pump
from the power supply to avoid accidental starting of the
pump!
Before maintenance or repair make sure that all rota-
ting parts stand still!
In case of a defect of the unit, a repair shall be car-
ried out only by the manufacturer or through an authori-
