5.5.4
Chemoclean function
Just like the timer function, Chemoclean can
also be used to start a cleaning cycle.
However, Chemoclean supports different
cleaning and rinse intervals.
Thus, irregular cleaning with different repeat
cycles is possible, and cleaning times with
post-rinse times can be individually defined.
Note:
•
The Chemoclean function is only
available with relays 3 (water) and
4 (cleaner).
•
Abortion of the cleaning process is
always followed by a post-rinse
time.
•
When “Economy” is selected,
cleaning is performed with water
only.
CHEMO.CDR
t
1
Cleaning trigger
t
2
t
1
Pre-rinse time
t
3
t
2
Cleaning time
t
4
t
3
Post-rinse time
t
5
t
4
Hold dwell period
t
0
t
1
t
2
t
3
t
4
t
5
Cleaner
(relay 4)
Water
(relay 3)
Hold
Fig. 5.11
Sequence of a cleaning
cycle
Coding
Field
Selection or range
Factory setting
Display
Info
R
Function group
RELAY
Relay contacts can be selected
and adjusted.
R1
Selection of
contact to be
configured
Rel1
Rel2
Rel3
Rel4
Rel3 (water) and Rel4 (cleaner)
are only available on transmitter
equipped accordingly.
If Chemoclean is selected as the
cleaning type, Rel4 is not
available.
R2 (1)
Configuration limit
contactor for
turbidity
measurement
LC PV
=
Limit
contactor TU
(1)
LC °C = Limit
contactor T (2)
PID controller (3)
Timer (4)
Clean = Chemoclean (5)
PV = Process value
If Rel4 is selected in Field R1,
Clean = Chemoclean cannot be
selected.
Confirmation with ENTER
switches off a different, already
switched-on function and its
settings are reset to the default.
Factory settings are printed in
bold
face;
base version does not include functions in
italic.
R
RELAY
Rel1
R1
Sel.Relay
LC PV
R2
Sel.Type
UM253E5A.CHP
Liquisys M CUM 223 / 253
Instrument configuration
Hauser
35
