Carel Compact ROC 140, User Manual

Page: 37 / 60

37
ENG
Control WTS +0300130EN rel. 1.0 - 05.09.2022
Display shows three lines:
- - -
After a few minutes of running time, measure the
conductivity of the permeate and/or raw/ mixed water
with an external conductivity meter and enter the
measured value in the corresponding parameter:
3 LIMIT OUT
» Press ê + è at the same time
» Press

to calibrate
» Press ESC to exit without calibrating
4 LIMIT ROH-/MIX
» Press
ê
+
è
at the same time
» Press

to calibrate
» Press ESC to exit without calibrating
11.6.2 Calibration of the probe zero point
» Remove the conductivity probe from the flow
assembly and dry it.
» Select 2A CAL ZERO in the main menu
2 CAL PERMEATE
3 LIMIT OUT

2A ZERO CALIB
2B SLOPE CALIB

READING 3.12 µS
ZERO OK
A conductivity value is now displayed in the upper line.
» Confirm the selection with

The display value may be > 0 µS, but should remain <
50 µS, otherwise the controller would not accept the
calibration. In this case the conductivity probe may
be faulty and must be replaced. The display shows the
message "ZERO ERROR cal.
» repeat the calibration or quit the parameter without
saving with ESC
11.6.3 Calibration of the probe slope
2A ZERO CALIB
2B SLOPE CALIB

READING 12,5 µS
BUFFER 15,0 µS
» In the main menu, select 2B SLOPE CALIB
» Enter the conductivity of the buffer solution in
the "BUFFER" field according to the table on
the bottle label.
» Hold the sensor in the buffer solution and wait
until the "READ" value has stabilized.
» press

, to confirm the displayed slope value
and exit the parameter
and press
ê
, to return to the main menu
or
» press ESC to exit the parameter without
saving
The buffer value must not be 0, otherwise the
calibration is not saved.
11.6.4 Permeate set point calibration
With the assistance of the permeate conductivity
measurement and a freely adjustable limit value for
the permeate conductivity, the unit can be stopped
and an alarm message issued if the permeate quality is
reduced.
» Select 3 LIMIT OUT in the main menu
3 LIMIT OUT
4 LIMIT RAW/MIX
Press the arrow keys
éê
to select whether the set point fun-
ction should be active or inactive.
3A LIMIT OUT
ENABLED
» Confirm the selection with

If the set point function has been activated, the program jumps
to submenu "3B"..
3B LIMIT OUT
50,00 µS
By pressing the arrow keys
éê
you can set the max. set point
» Confirm the selection with

The program jumps to the submenu "3C".
If the permeate conductivity exceeds the limit value