How to Guide
Commercial Pressure and Float Switches for Power Circuits
Electromechanical Pressure Switches, Class 9013 Types F and G
© 2011 Schneider Electric
All Rights Reserved
18
03/2011
Settings
Pressure switches with adjustable differential
(Types FSG, FYG, and FRG)
When setting the pressure switch, adjust the setting point on falling pressure
first, then the setting point on rising pressure (PB).
• Setting point on falling pressure
The setting point on falling pressure is set by adjusting range-nut
1
.
• Setting point on rising pressure
The setting point on rising pressure is set by adjusting range-nut
2
.
Pressure switches with fixed differential
(Types FTG and FHG)
Only the setting point on rising pressure is adjustable.
• Setting point on rising pressure
The setting point on rising pressure is set by adjusting range-nut
1
.
• Setting point on falling pressure
The setting point on falling pressure is not adjustable.
The difference between the tripping and resetting points of the contact is the
inherent differential of the switch (due to factors such as contact differential
and friction).
Pressure switches with adjustable differential
(Type G)
When setting the pressure switch, adjust the setting point on falling pressure
first, then the setting point on rising pressure.
• Setting point on falling pressure
The setting point on falling pressure is set by adjusting range-nut
1
.
• Setting point on rising pressure
The setting point on rising pressure is set by adjusting range-nut
2
.
1
2
1
1
2
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