sauermann ECM Guide Rapide page 5

When the voltage is applied, various things can happen:
1. Switching is OK, the sensitivity setting (adjusted in the factory) is in the center of
it's range (10 to 12 rotations). The unit is ready to put into service.
2. The red LED is "on", the relay energised and there is no change when the
manometer liquid passes the cursor. If the red LED switches "off" and the relay
de-energises when the inverter switch position is changed, this means that the cell
is too powerful.
Turn the setting potentiometer anti-clockwise, until the red LED is switched off and
then turn a further 5 rotations.
Displace the manometer liquid past the cursor and ensure that there is a sure and
repeated switching action.
3. The red LED is "off", the relay is de-energised, there is no action when the
manometer liquid passes the cursor.
When the inverter switch is operated the LED switches "on" and the relay
energises, but there is no change when the manometer liquid passes the cursor.
This means that the cell is not powerful enough.
Make sure the liquid is past the cursor and then turn the potentiometer clockwise
until the LED and relay switch, then turn a further 5 rotations.
Displace the manometer liquid past the cursor and ensure that there is a sure and
repeated switching action.
4. When the voltage is applied the red LED and relay flickers with no liquid covering
the cursor. This means that the sensitivity is set too high, turn the potentiometer
anti-clockwise approximately 4 or 5 rotations.
Displace the manometer liquid past the cursor and ensure that there is a sure and
repeated switching action.
Before carrying out the setting procedures above:
• Make sure the manometer is filled with liquid, up to it's zero point.
• The temporising potentiometer is set to zero (fully anti-clockwise).
• Function inverter switch in logical position.
• The electronic card is powered and the relay disconnected.
6 Options
To avoid the manometer liquid being blown out, in the case of overpressurisation,
the instrument can be fitted with safety valve connections type 509 (consult us).
7 Services
The ECM does not need any regular service. We simply recommend that the manometer
liquid is changed every year, to ensure that the photoelectric cell works properly.