4 … 5
MC • Karl Dungs
, Inc.
• GGA
O
...A4 • Edition 2016.02 • P/N 271843
1. Remove the clear cover from the switch.
2. Use 14 or 16 AWG wire rated for at least 75 °C.
3. Route the wires through the conduit connector.
4. Connect the wiring to the appropriate screw terminals.
5. Replace the clear cover from the switch.
Switching function
As pressure rises above
setpoint:
1 NC opens, 2 NO closes
As pressure falls below
setpoint:
2 NO opens, 1 NC closes
Wiring
Operation & Adjustment
Adjusting the Set Point
1. Remove the clear cover
�
from the switch.
2. Adjust the switch to the desired set point by turning the
dial. The black arrow on the dial indicates the set point
�
.
3. After adjusting the set point, verify that the pressure switch
operates as intended by using an accurate pressure gauge
connected upstram of the switch.
4. Replace the clear cover.
Automatic Reset and Operation
The NC contact of the GGAO-A4... breaks when pressure
rises above the set point. It makes automatically when pres-
sure falls below set point.
All wiring must comply with local electrical
codes, ordinances and regulations.
Do not exceed the switch ratings given in the
specifications and on the switch.
Medium Pressure
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�
