Enviro ST1 - Troubleshooting

Division:
60 I 77
Troubleshooting
Fault Action Carried out by
Alarm lights do not
go on
Check the voltage connections, plug in
the mains plug if
necessary.
User
Display on the filter
unit does not light up
Check the voltage connections, plug in the mains plug if
necessary.
User
Failure of the fans in
the filter unit
Stop work immediately.
See "Behaviour in case of malfunction".
User
Alarm system
sounds continuously
(alarm sound does
not stop)
Check that the filter unit is switched on.
Check that there is free air circulation in the area of the
sensor.
Check airflow with smoke test kit to visualise the flow.
User
Check connections to sensors
.
Check air flow with an anemometer.
Service a1
-
envirosciences
Alarm system
sounds briefly
(alarm tone stops by
itself)
Check that there is free air circulation in the area of the
sensor.
Check whether there are disturbing air flows near the
enclosure due to draughts (air conditioners, doors or
similar).
Check the room pressure in relation to the corridor (in case
the enclosure is connected to the building's ventilation
system).
User
Measure air flow (check set
limit value)
.
Service a1
-
envirosciences
Inflow velocity below
limit value
Check that the filter housing is switched on.
Check that there is free air circulation in the area of the
extraction/filter housing.
Check that the ventilation hose is connected correctly.
Check that the collar is attached correctly.
Readjust the motor control of the filter housing .
Service a1
-
envirosciences