Magnetrol Echotel 961 Installation And Operating Manual - page 6
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MAINTENANCE
Manual Testing
Level Test: (process relay(s)):
Pressing the “Level Test” pushbutton, will manually test the process relays and connected actuators/indicators. The level test
forces the relay(s) to change from a de-energized to an energized status and vice versa. The LED’s will be ON/OFF corre-
sponding (see tables in the configuration section). The time delay setting is not active during testing.
Malfunction Test (malfunction relay):
Pressing the “Malfunction Test” pushbutton for min 2 s, will manually test the malfunction relay and connected actuators/indi-
cators. The malfunction test simulates a circuit failure and forces all relays to de-energize. The «MALF» LED will turn OFF and
the «FAULT» LED ON. The time delay setting is not active during testing.
Troubleshooting
Problem
Action/Indication
Solution
No output signal
No LED’s are ON
Check wiring / input power
Check for malfunction (962). See below
No change in output between
wet gap / dry gap
Gap may be plugged by
solids / dense foam
Clean the transducer
Gap is out of reach of liquid
Check mounting section and relocate
the unit or check blocking valves.
Chattering output
Excessive aeration / Turbulence
Introduce a time delay
Check input power
Relocate the switch
If installed horizontally, make sure the
961 transducer gap is oriented in a ver-
tical position as shown in the mounting
section. This allows proper drainage
from the gap, and prevents air bubbles
from accumulating in the gap.
Fault LED is ON
A system fault has been detected
Check input power
Check wiring between transducer and
electronics or replace transducer.
Press «LEVEL TEST» test pushbutton
to identify the problem:
* --- * : 1 flash
Check wiring between transducer and
electronics or replace transducer.
** --- ** : 2 flashes
Replace electronics
*** --- *** : 3 flashes
The unit senses excessive noise
interference. Check shield connection or
eliminate interference from a walkie-
talkie, radio or other nearby source