ACO Haustechnik 3300.11.50, Installation And Operating Manual

Page: 11 / 12

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11 Service-Line
ACO H a u s t e c h n i k
6.5 Possible malfunctions
Operators whose plants do not possess of an au-
tomatic cleaning system are to check the cleanli-
ness of the sensors during each disposal and are
to clean the sensor heads, if applicable. Risk of scalding: The sensors are heated and
reach an operating temperature of approx.
65-75°C. After disconnecting it from the mains
voltage, the device may still be hot for several
minutes.
In case of need, adequate protective measures
must be taken.
7. Servicing
8. Spare parts
Setting of switching points Switching manner
The switching points are pre-set at our works.
Depending on conductivity of water, the switching point
is adjusted at the trim-pot. Generally, it is sufficient
for most applications with clean tap water to leave the
potentiometers in the most sensitive setting (left stop),
corresponding to a switching point of approx. 12µS.
> If required, sensitivity for each electrode can be se-
parately adjusted. When turning against the clockwise
direction, the electronics become more insensitive
leading to better results with wastewater.
> Generally, all potentiometers should be in the same
position. Only in the case of very different distances
of electrodes to the reference electrode or in the
case of long connection lines it is reasonable to
adjust sensitivity in different ways. Following chan-
ging the cable connecting length, the setting must be
checked.
Delays in switching behaviour may result from
sensor surfaces coated by grease, dissolving only
in the course of several minutes and admitting
a proper test reading. In the case of indication
error of the sensor, the cleanliness of the sensor
heads must be checked.
Risk of scalding: The sensors are heated and
reach an operating temperature of approx.
65-75°C. After disconnecting it from the mains
voltage, the device may still be hot for several
minutes.
In case of need, adequate protective measures
must be taken.
If during operation situations develop which are not
sufficiently described, please contact:
ACO -Service:
Telefon +49 (0) 36965 - 819-444
Fax
+49 (0) 36965 - 819-367
E-Mail service@aco-online.de
Questions
If you have questions of any kind which are not suffici-
ently described, please contact:
ACO -Service:
Telefon +49 (0) 36965 - 819-444
Fax
+49 (0) 36965 - 819-367
E-Mail service@aco-online.de
For spare parts, please contact:
ACO -Service:
Telefon +49 (0) 36965 - 819-444
Fax
+49 (0) 36965 - 819-367
E-Mail service@aco-online.de
Operation, servicing and spare parts
NOTICE DANGER
DANGER
NOTICE