8. Other informations
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8.8 Function second temperature sensor
The second temperature sensor serves as monitoring sensor (redundancy) for the
first one. An alarm is activated in case of an adjustable deviation of both measured
values.
The second sensor input must be activated by an appropriate parameter setting
[A50].
The maximum temperature difference for the monitoring sensor in comparison to the
regulating sensor (FÜ1) is set in [h38]. If the set temperature difference is exceeded
for longer than 5 minutes, fault code [F38] is displayed.
Error code [H38] indicates that one of the two sensors is defective. Thus, a slow
dying of a sensor can be detected.
8.9 Setting of the level control
The level control is factory pre-set to medium water quality. Depending on the degree
of hardness in the local water network, the sensitivity can be set as follows:
Setting in the I/O test parameters:
Feed water with the consisting tank cleaning control until level has been
achieved (optical control of the electrode)
Select parameter [o.41] - in TW-
31 in level “I/O test parameter” (see section 7.9)
Setting level 1.
Keep SET pressed -
set simultaneously the displayed value to “-10” with the
button ARROW DOWN.
Keep SET pressed - increase slowly the value with button ARROW UP until the
left yellow LED flashes (increase additionally by 1)
With the release of the SET-button the last set value is stored
Setting of level 2: Select parameter [o.42] -> then see level 1
Re-adjustment in C-parameters
By readjusting parameters [C30] for level 1 and [C31] for level 2 the sensitivity can
be readjusted.
8.10 Monitoring of detergent dispenser
If the detergent dispensers for the alkaline and the acidic detergent are monitored
by float switch, t
hese can be parameterized in the parameters [h35] „alkaline” and
“acidic” [h36] as follows:
Setting = 0
In deactivated condition no detergent dispenser-monitoring takes place.
Setting = 1 (high aktiv)
Fault messages F35 and F 36 are activated, when the corresponding digital input
is switched on.
Setting = 2 (low aktiv)
Fault messages F35 and F 36 are activated, when the corresponding digital input
is switched off..
more sensitive
less sensitive
threshold value
S
en
s
or
1
S
en
s
or
2
op
ti
on
a
lly
