Instruction/ maintenance manual of the product A20 Series Murphy
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Bulletin AT-95026B page 1 of 4 2 and 2-1/2 in. (51 and 64 mm) Dial ■ Corrosion Resistant Polycarbonate Case ■ Indicating Gage and Limit Switch ■ Switch Can Activate Alarms and/or Shut Down Equip.
Bulletin AT-95026B page 2 of 4 2-1/4 in. (57 mm) 2-1/2 in. (64 mm) 2-29/32 in. (74 mm) 2-1/2 in. (64 mm) 1-11/32 in. (34 mm) 2-11/16 in. (68 mm) Mounting hole dia. 1-27/64 in. (36 mm) 2-1/16 in. (53 mm) Mounting hole dia. Mounting Clamp Mounting Clamp °C TEMPERATURE 1-1/2 in.
Bulletin AT-95026B page 3 of 4 Pre-Alarm Using A20/A25T ABS T ypical Inter nal Wiring Diagrams The A20TABS and A25TABS features a standard limit contact for equipment shutdown on high temperature. It also has an internal SPDT snap-switch to sig- nal an alarm before shutting down.
Bulletin AT-95026B page 4 of 4 How to Order T o order , use the diagram below . List options in ascending alphabetical order (A-Z). Example: A20T -B1-250-4.
An important point after buying a device Murphy A20 Series (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Murphy A20 Series yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Murphy A20 Series - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Murphy A20 Series you will learn all the available features of the product, as well as information on its operation. The information that you get Murphy A20 Series will certainly help you make a decision on the purchase.
If you already are a holder of Murphy A20 Series, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Murphy A20 Series.
However, one of the most important roles played by the user manual is to help in solving problems with Murphy A20 Series. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Murphy A20 Series along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
