5.5.4
Timer for cleaning function
This function can be used to implement a
simple cleaning routine. The user can specify
a time interval after which cleaning is to start;
i.e. only constant intervals can be defined.
More extended cleaning functions can be
implemented in conjunction with the
Chemoclean function (version with four
contacts; see chapter 5.5.5).
5.5.5
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 and 4.
•
Abortion of the cleaning process
is always followed by a post-rinse
time.
•
When “Economy” is selected,
cleaning is performed with water
only.
Wiper and / or
spray cleaning system
active
inactive
Hold function
active
inactive
Cleaning time
(0 ... 999 s)
Pause time between
2 cleaning intervals
(1 ... 7200 min)
Clean-hold dwell
period
(0 ... 999 s)
Time
DIAGR-TI.CDR
Fig. 5.10
Relationships among
cleaning time, pause time
and hold dwell period
CHEMO.CDR
t
1
cleaning start
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
Hold
Water
Cleaner
t
0
t
1
t
3
t
2
t
5
t
4
Fig. 5.11
Cleaning cycle sequence
LM253E5B.CHP
Liquisys M CLM 223 / 253
Instrument configuration
Hauser
35
