Lenntech Testomat 808 Manual De Mantenimiento Y De Servicio página 17

Internal flushing key (second key from the left, short press of the
key):
Calling up the serial interface
NOTE

Number of key activa-
tions
first key activation
second key activation
third key activation
fourth key activation
Standby key (third key from the left, short press of the key):
Calling up the serial interface

NOTE
Number of key activa-
tions
first key activation
Operation via the serial interface is no longer possible from this
point. A change to the serial interface is only possible after the
fourth key activation.
Operation via the serial interface is no longer possible from this
point. A change to the serial interface is only possible after the first
key activation.
Function
=> Measurement LED1 (yellow) on,
LED above key 2 (Flush inter-
nal/external) on, LED above key 3
(Standby/72h) on.
=> Measurement LED 2 (red) on, LED
above key 2 (Flush internal/external) on
and LED above key 4 (Alarm) on.
=> The message, "ADC value BPW21:"
with attached measurement value is
displayed. The measurement value
must change according to the entry of
light to the BPW21 (reduction in light =>
reduction in ADC value). The LED
above key 2 (Flush internal/external) is
lit.
=> The POWER LED flashes.
Function
=> Checking the watchdog timer: the
LED above key 4 (Alarm) and the
POWER LED flash. A reset is initiated
after 12 seconds and the instrument
starts in normal operating mode (the
POWER LED is lit).
Service programs
17