EPT076596 Issue 1 – March 2022
25
Operation
Setting the desired airflow
The DPX3500 system features automatic flow control. This
enables the user to set the required airflow rate, then over
time as the filters begin to block the motor will
automatically begin to increase in speed to compensate for
any loss in performance caused by the added restriction of
the partially blocked filters.
The extractor, all pipe work and interfacing must
be fully installed and connected before the airflow
is set.
To set the airflow
(The airflow can be set between 200-450m
3
/h)
1. Press the airflow set point button (Refer to
diagram below for button location).
2. The page will have a numeric keypad. The numbers
will be enabled depending on the flow limits of the
system. DPX3500 has flow limits 200-450. Upon
entry only numbers 2-4 will be enabled initially, the
system enters the airflow setpoint from left to
right, only allowing reachable setpoints and
prevents invalid setpoints.
3. Once you have your desired airflow, Press the enter
button. Once you have entered a valid airflow the
‘Enter’ button will be enabled. Pressing ‘Enter’ will
save the entered setpoint and return the display to
the main page.
The set airflow will now be maintained throughout
the life of the filters. When the extraction unit can
no longer maintain the set airflow an alarm will be
given and the display will indicate which filter
should be changed.
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