Adjusting Air Flow - Frank OPAL 772-17 User Instructions

ADJUSTING AIR FLOW

CHANGING VOLTAGE IN THE
TRANSFORMER
Output power for speed 2 may be changed
to 100 V by reprogramming via the switch.
(Contact customer services.).
SETTING THE DAMPER
The air flow is adjusted with the aid of the
damper. The damper can be accessed for
adjustment by removing the filter.
Fig. 10
Measurement outlet
The measurement pressure Pm is measured
in the measurement outlet, Fig. 10A. With
the aid of the measurement pressure Pm
and the position of the damper, the volume
of air can be read off in the adjustment
diagram, where F1-F6 are forced ventilation
and G1-G6 are basic ventilation.
If the volume of air has to be altered, read
off a new damper setting from the diagram
and then adjust the position of the damper
according to the following description.
991.0379.422/D000000006851/180316/2021-10-01
Adjusting forced ventilation
Fig. 11
Open the damper hatch, Fig. 11B.
Attention!
Handle the damper with care!
Fig. 12
Remove the forcing hatch, Fig. 12C, by lif-
ting it from the locking tags, Fig. 12D.
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