TM 10-4610-232-34
(7) The control opens an electrical circuit on a change in the difference between two pressures. See Table 2-3 for
difference.
(8) Install cover (1), gasket (5) and secure with screw (2).
Table 2-3. Differential Switch Settings
Switch No.
Description
PDSH1
Strainer High Differential
PDSH2
Media Filter High Differential
PDSH3
Cartridge High Differential
Pressure Setting
15 psig
25 psig
15 psig
Contacts Open
or Close with
Increasing Pressure
Open
Open
Open
b. Pressure Switch (Figure 2-42).
NOTE
Contacts can be visually checked for opening and closing or checked with a
multimeter.
(1) Remove range adjustment protective cap (6, Figure 2-42).
(2) The switch is adjustable over the entire range of the control. The desired set point is found in Table 2-4.
(3) The adjustment procedure will be described for switches which open on increasing pressure.
Figure 2-42. Pressure Switch
Change 3
2-155
