18
6. Initial operation
6.1 General instructions
Initial operation
Initial operation must be carried out by a qualified expert, with
the direct supplier of the wastewater lifting station responsi-
ble for his availability. During initial operation, a test run with
water is required over at least two switching cycles. During
the test run, dry running must be avoided. Before, during and
after this test run, the following must be checked:
a) The electric fuse protection of the wastewater lifting stati-
on according to IEC or local regulations
b) The direction of rotation of the motor
c) The gate (actuation, open position, air-tightness)
d) The switching and setting of switching heights in the
collecting tank, in as far as these are not pre-set by the
manufacturer
e) Air-tightness of the system, fittings and pipes
f) Check on operating voltage and frequency
g) Functional test on the backflow preventer
h) Malfunction warning device
i) Attachment of the pressure pipe
j) Motor protection switch; check by briefly screwing indivi-
dual fuses out (two-phase run)
k) Oil level (if oil chamber exists)
l) Pilot lamps and counters
m) Functional test for any manual pump that may be instal-
led.
Initial operation must be documented in writing, whereby im-
portant data e.g. setting of the motor protection switch and
status of operating hours counter must be noted.
This initial operation may only be carried out by authorised
specialist staff.
DIN 1986, part 3, must be heeded during the initial operati-
on of lifting stations.
CAUTION:
Before initial operation the inlet pipes and the pumps must
be cleaned of solid materials such as metal, sand etc.
Before initial operation the pump must be filled with pumping
fluid up to the height of the ventilation bore hole of the pump
housing.
The pump must not suck in any air!
After the complete and correct installation of the complete sy-
stem and all the additional parts as well as the pipe and el-
ectrical installations, the system can be put into operation.
Any shut-off valves must be opened.
Make sure before you put the system into operation that the
nominal voltage and type of current specified for the system
correspond to the nominal voltage and type of current on site.
Check the system installation/cabling carefully before you
put the system into operation. Is the protective earthed con-
ductor working? Have the relevant standards/guidelines
been heeded, particularly with a view to the potentially ex-
plosive area?
Do not put the system into operation if there is any damage
to the motor, switch unit or cables visible.
Always follow the safety instructions in chapter 1 of this ma-
nual.
IMPORTANT:
All screw connections must be checked for a tight fit.
6.2 Pressure outlet connecting pieces
The pressure outlet connecting pieces of the lifting stations
are equipped with a backwater flap with aerating device as
standard for each pump. The aerating device must always be
in operating position (see Fig. 1).
The flap (dotted line) is opened exclusively by the pumping
flow of the pump.
6.3 Operating the switch unit (from model year 01/10)
As soon as the network connection has been set up, initiali-
sation takes place immediately, i.e. the system undertakes a
self-test. After this test, the system is ready for operation
(mains LED lights up).
The acoustic alarm can be switched off by pressing the alarm
LED. The pump(s) can be switched on manually by pressing
the pump key twice.
Fig. 1
