SERVICE MANUAL
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Service manual V1.08 | Nov-2015 | LM0002-EN
Page 40 of 97
Pump 4 flow rate: <value> value in ml/minute. It is recommended to perform exact measurement with
installed dosing tubes.
After performing setup or any changes to this section, click „SAVE SETTINGS” to save configuration to
system.
3.10.5
Calibration pH
Requirement for reliable measurement and dosing control is a regular calibration of pH electrode. All pH
electrodes require calibration from time to time. A three point calibration characterizes an electrode with
a LVLØ controller. Once an electrode is characterized, the electrode/ LVLØ pair can be used to determine
the exact pH. Calibration buffers required for this process are pH4 (4.01), pH7 (7.01), pH10 (10.01). It is
recommended to perform regular maintenance (cleaning and calibration) on pH electrode to maintain long
life at least two times per season. To have the best results, perform this maintenance every month of usage.
Calibration is performed via front panel of LVLØ controller, please follow instructions on panel. Calibration
procedure is following:
1.
press button down or up
2.
select calib pH
3.
follow instructions on display
3.10.6
Calibration ORP
ORP readings can be reported using the absolute mV values. Requirement for reliable measurement is a
regular calibration of the Redox electrode. With a one point calibration, we assume that the LVLØ controller
will read 0 mV at 0 mV. Calibration buffer solution of any value is required (we recommend to use Light’s
solution> +475±5 mV). Regular maintenance (cleaning and calibration) at least two times per season is
recommended to maintain long electrode life. To have the best results, we recommend regular
maintenance every month of the usage.
Calibration is performed via front panel of LVLØ controller, please follow instructions on panel. Calibration
procedure is following:
1.
press button down or up
2.
select calib ORP
3.
follow instructions on display
3.10.7
Free chlorine measurement
LVLØ is able to work with any source of free chlorine measurement system, which is able to send 4-20mA
output. For operation of the source system, please refer to its vendor instructions.
3.10.7.1
Electrical connection
LVLØ is ready for connection of analog signal (4-20 mA) which is the output of free chlorine
measurement device. Connect analog signal from free chlorine meter/controller to “CLF”
terminal.
+ = plus (positive pole)
- = minus (negative pole)
GND = Ground