
WA5069E_PA-DPS-83 50_User Manual_R01
CAPETTI ELETTRONICA s.r.l. - Strada Stratta 57
10090 CASTIGLIONE TORINESE - TORINO - ITALY
VAT 04837130014 - Phone 011.981.98.11 - Fax 011.981.98.210
3. Applications.
If the switch is to be used for filter status monitoring, the pilot tube ends should be cut square. If the switch is to be used for fan
status monitoring, the ends of the pilot tube should be cut at an angle of 45°.
Fan status monitoring.
The switch can be used across a fan to provide proof of air flow and hence fan status. Picture 2 shows how to connect the High and
Low pressure ports.
Filter status monitoring.
The switch can be used across a filter to provide dirty filter status. Picture 3 shows the connections for this application.
4. Installation.
a. The PA-DPS-83 50 should only be installed by a competent, suitably trained technician, experienced in installation
with hazardous voltages (>50Vac & <1,000Vac or >75Vdc & 1,500Vdc).
b. Ensure that all power is disconnected before carrying out any work on the PA-DPS-83 50.
c. Fix the switch to a suitable flat surface, maximum diameter of the screws must not be bigger than 8mm. Do not over
tighten the screws, in order to avoid deformation of the devices base. Mount the pressure switch horizontally
(electrical connectors pointing upwards) only, if no condensate can form. In this position, the switching values are
approximately 20Pa higher as indicated on the scale.
d. Remove the cover by unscrewing the single screw.
e. Terminate at the crimp-type sockets as required and set the desired switching pressure on the setting knob using a
screwdriver.
f. Replace the cover and tighten the single screw, it is possible to move the cable entry in steps of 120°.
g. Push the pressure tubing onto the pressure ports on the unit. Ensure that the Hi and Lo ports have been correctly
identified.
P1(+) Over pressure measurement
P2(-) Vacuum measurement
P1 & P2 Differential pressure measurement
CAUTION
The PA-DPS-83 50 will be damaged if subjected to excessive pressure. Do NOT test the unit blowing into the inlet ports.