Sinvest VGE Blue Lagoon BL220 Manual Del Usario página 11

P5: This parameter allows to set the working threshold used when the pump operates in
automatic control.
P6: This parameter represents the intervention hysteresis arounfìd teh working threshold; in the
case of ON/OFF controls it can be set between zero and 2.00 pH (or between zero and 200
mV), while in the case of proportional controls the hysteresis must have a value between 0.20
and 1.00 pH (or between 20 and 100 mV).
P7: At the device start-up, some electrodes require a stabilization (or polarization) time, during
which the measurement is not reliable. This parameter allows to set a delay at start-up (in
minutes), during which the pump is off and the display alternates between the measurement
and the "PAU" message. Typically, in the case of pH electrode a delay of 1 minute is sufficient,
while in the case of redox electrode it is recommended to set a delay of at least 20 minutes.
Sometime this standby time is also useful to compensate for hydraulic delays that can occur at
the plant start-up. Once the set time has elapsed, the pump begins to operate normally.
P8: This parameter allows to set a time limit within which the measure must return to the working
threshold value (P5), otherwise an alarm is generated. A time between 0 (feature disabled)
and 600 minutes (10 hours) can be set. The alarm time count begins when the system detects
a measurement out of range, and automatically resets when the measure returns within the
threshold value. If the measurement remains outside this threshold longer than the set time,
an alarm is generated and the display alternates between the measurement and the "ALL"
message. When the alarm is active, the dosage is disabled and normal operation is resumed
when the alarm is reset by pressing the ON/OFF button, by turning the pump off and on again,
or automatically when measurement returns to an acceptable value. This condition may occur
due to an insufficient dosage, such as not to allow the achievement of the threshold value.
CALIBRATION
pH calibration
1. Rinse the pH electrode with distilled water, then immerse it in the pH 7.01 buffer solution
2. Wait a few seconds for the system stabilization
3. Press and hold the [-] key until the message "OFS" (OFFSET calibration) is displayed
4. Press ON/OFF to confirm the calibration or wait for a few seconds for exiting without saving and
keeping the previous calibration
5. Rinse the electrode with distilled water, then immerse it in the pH 4.01 (or 9.01) buffer solution
6. Wait a few seconds for the system stabilization
7. Press and hold the [+]key until the message "GAI" (GAIN calibration) is displayed
8. Press ON/OFF to confirm the calibration or wait for a few seconds for exiting without saving and
keeping the previous calibration
Notes
• If trying to perform an OFFSET calibration at a pH value very far from 7.00 or a GAIN calibration
with a buffer solution of pH too close to neutrality, the procedure is not successful and the
display shows the "Err" message.
UV-C and Pool equipment
BL220 PERISTALTIC PUMPS | 11
EN