43
To return to the
Technician
security level:
Press the numeric password from the
Process
screen:
TECHNICIAN
PRESS ANY KEY
Remember that following the first power-up the Technician password is 2222 and the Operator
password is 1111. You may change the passwords in the SYSTEM SETUP menu.
21
Maintenance
Periodic maintenance is required to ensure trouble free operation of the controller. The following
sections cover the required maintenance.
21.1.1
Conductivity sensor
Remove power from the controller and shut off the sample flow.
Remove the sensor from its plumbing.
Clean the electrodes with a wire brush. A soft steel brush is preferable to a brass brush.
Do not use cloth to clean the electrodes. Cloth has oils that will foul the sensor.
If there is oil on the sensor glass, use isopropyl alcohol to clean the electrode.
It is recommended that you use a 10% Muriatic or HCL acid to clean the sensor if
necessary.
Wash the sensor off with tap water.
Install the sensor in its plumbing.
Restore sample flow and check for leaks.
Restore power to the controller.
Perform a calibration of the Conductivity.
21.1.2
ORP Sensor
Clean the electrode end of the ORP sensor at least once per month. Cleaning of the ORP sensor
may need to be performed more frequently if it is in a high fouling environment.
Remove power from the controller and shut off the sample flow.
Remove the sensor from its plumbing.
Be careful not to touch the glass electrode. Do not use cloth to clean the electrode.
Cloth has oils that will foul the sensor.
If there is oil on the sensor glass, use isopropyl alcohol to clean the electrode.
It is recommended that you use a 10% Muriatic or HCL acid to clean the sensor.
Wash the sensor off with tap water.
Install the sensor in its plumbing.
Restore sample flow and check for leaks.
Restore power to the controller.
Allow the reading to stabilize for approximately 30 minutes.
Perform a calibration of the ORP.
Содержание PULSAblue 3300 Series
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