Dungs GGAO-A4-4 Einbauanleitung - Seite 5
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Maintenance & Testing
Annually check the switch for proper operation
Set Point Calibration
• Connect a meter capable of reading +/- 0.1 ohms to the NC
and COM contacts.
• Measure the resistance across the NC and COM contacts.
If the resistance is more than 1.0 ohm, the switch switch
should be replaced, since this indicates that the switch
contacts are starting to either corrode or carbonizing.
Accessories & Replacement
Accessory for pressure switch
Replacement cover (cover, O-ring, 2 screws)
Mounting bracket (metal) (1 pcs)
120 VAC light mounting set (yellow)
24 VDC/VAC light mounting set (yellow)
Replacement conduit adapter M 20 to 1/2" NPT
DIN connector (female plug)
Male plug for DIN connector
We reserve the right to make modifications in the course of technical development.
5 ... 5
• Apply appressure to the + air pressure connection, and
confirm that the NC contact breaks when pressure rises
above the set point and that the NO contact makes. the NC
contact will make automatically when pressure falls below
the set point pressure.
• Connect a meter capable or reading +/- 0.1 ohms to the NO
and COM contacts.
• Measure the resistance across the NO and COM contacts.
If the resistance is more than 1.0 ohm, the switch switch
should be replaced, since this indicates that the switch
contacts are starting to either corrode or carbonizing.
Order No.
262248
230288
231772
231774
240671
210318
219659
Karl Dungs, Inc.
3890 Pheasant Ridge Drive NE
Suite 150
Blaine, MN 55449, U.S.A.
Phone 763 582-1700
Fax
763 582-1799
e-mail [email protected]
Internet http://www.dungs.com/usa/
Karl Dungs GmbH & Co. KG
P.O. Box 12 29
D-73602 Schorndorf, Germany
Phone + 49 (0)7181-804-0
Fax
+49 (0)7181-804-166
e-mail [email protected]
Internet http://www.dungs.com