Internal Connections (For Technical Personnel Only); Start-Up; Visualizations - Tebas Efka270 Installation And Maintenance Instructions Manual

Internal Connections (
The unit is provided internally prewired, and all connections of normal use (power supply, dosing pumps, measurement
sensors and flow sensor) are available externally via cable or connector.
However, if you need to operate on the electronic boards or replace blown fuses, refer to the diagram below.
Connector for front board flat cable
Power
Transformer
Fuse F3.15A
Y/G N L
Power Supply
Notes:
•
The possible reversal of the connections line / neutral of the power supply does not affect the normal operation.
•
If the level and flow inputs are not used, leave them open (not connected).

START-UP

At start-up the microcontroller displays for a couple of seconds information about the firmware (type/version), then shows the
two measures flashing for all the start-up delay time (if set) and then starts operating accordingly with the configured working
mode.

VISUALIZATIONS

During normal operations, the display shows the two measured values on the top line, while the bottom row displays the
status of the two pumps.
For example:
In these conditions, pressing the  or  button, you can display the OFFSET and GAIN values of the pH and redox
measurements.
For example:
This information is useful to verify the electrode status. Note that an electrode in good condition should have an offset close
to zero and a gain close to 1.000. When these values deviate from the ideal ones, indicate a dead electrode or sensor aging.
During manual working mode, the display shows on the top line the pump to which the information refers, while the
bottom row shows the pump status.
For example:
In these conditions, pressing the ON/OFF button allows to enable / disable the pump. In case of fault or alarm condition, the
pump stops dosing until the normal working conditions are restored.
for technical personnel only
Y/G L N Y/G L N
Pump 1 Pump 2
"7.25pH 286mV"
"P1 ON P2 020%"
"7.25pH"
"O=-4 G=1.000"
"Pump 2 manual"
"ON"
)
µProcesor
Reserved
+ -
Level 1
IN pH IN Rx
20