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imately 1 second. Within this time, move the operating
switch for Pump 1 to the „Auto" position. The „Pump 1
Error" LED blinking will turn off.
re-activating „Maintenance blinking" (can only be
carried out by the customer service department!):
Reset the maintenance counter in the ServCom diagnos-
tic equipment's menu. Then, move the power switch to
the „Off" position and press the „Reset" button.
•
red „Pump 2 Error" lED (blinking signal)
If the alarm LED is blinking, the control system has detect-
ed multiple abnormally long pump cycles. Please notify
your customer service department!.
•
red „Alarm" display (continuous signal)
Lights up when the liquid level in the tank rises above the
alarm level. At the same time, the audible alarm will sound
if turned on. Any connected external alarm notification is
activated likewise. The alarm will be switched off auto-
matically when the pumps have pumped the liquid level in
the tank under the alarm level.
If both green operating LEDs are illuminated simultane-
ously with the red alarm without an error message, the
pumps are temporarily failing to pump out a particularly
strong inflow quantity in a timely manner. In this case,
wait until the inflow quantity slows. The alarms will then
switch off automatically. If this does not occur, there is
a malfunction in the system. In this case, please call our
customer service department. If the red alarm display
lights up without an error message being present, and if
no or only one of the green operating LEDs is illuminated,
please call our customer service department.
•
yellow lED „phase sequence" (with Ac current)
Lights up when phases of the mains supply have been
switched. The respective pump then runs in the wrong
rotational direction, which leads to reduced capacity and
increased wear. The display does not report, for example,
when the connecting cable between the motor and con-
trol unit have been connected incorrectly after the pump
motor has been replaced, causing the pump to run in the
wrong rotational direction. Therefore, in such cases, the
correct rotational direction of the motor must always be
checked, even if the unit is dismantled. The impeller must
turn clockwise when viewed from the top side of the
motor. When the motor starts, it jolts counterclockwise.
To switch phases in the event of an incorrect phase se-
quence, see Section 5.6.
5.6. Rotational direction
For 1Ph-motors, control of the direction of rotation is not
necessary as these always run in the correct direction of
rotation.
The direction of rotation must be checked in three phase
motors before commissioning. When using a HOMA
switchgear with LED for direction of rotation, this flashes
in the event of wrong direction of rotation.
In the event of wrong direction of rotation two phases of
the power supply must be interchanged. As standard, the
pumps are delivered with CEE power plugs.
The interchange of phases is carried out by 180° rotation
of the round holding plate on the poles of the plug with a
screw driver.
30 | EngliSH
The indicated conveying data and performance data
can only be achieved if a clockwise rotation field is
present. The machinery is not designed for operation
in an anticlockwise rotation field.
5.7. Switching on / Operation
To do so, set the pumping control unit operating switch to
the „Auto" position.
As in Sections 5.5.1 and 5.5.2, the pumps will begin to
operate as soon as the water level in the storage tank
reaches the required level. The pump will switch off au-
tomatically when the switch-off level has been reached.
If the activation level in the container has been achieved,
the pump is put into operation until the liquid in the con-
tainer falls to the stop level. If the liquid level in the con-
tainer reaches the alarm level, an alarm is triggered which
remains activated until the liquid has once again fallen
below the level.
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