29
English
7 - Product Description
Electrical connections
Connect the flow switch as indicated in the figure below:
Connect the common (1) free contact and the Normally Open (3) free
contact and the Ground line to the terminal plate
See the electrical terminal plate layout for more information
COM - 1
N.O. - 3
N.C. - 2
Calibration
NOTE
The flow switch must be calibrated on site. It is
delivered uncalibrated. The advised calibration
flow rate is shown in the table below.
Adjustments should be carried out as follows: turn the calibration
screw (A) in a clockwise direction for the contacts to close at higher
flow rate values or in a counterclockwise direction for lower flow rate
values. When the adjustment has been made lock the screw (A) with
the locking ring nut (B). Avoid all contact with the presetting screw
(C). An incorrect setting would seriously impair the operation of the
switch.
PAW W5APAC
200
250
Advised calibration flow rate
m
3
/h
2.0
2.5
