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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Murphy Temperature SWICHGAGE A20 Series, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
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Unfortunately, only a few customers devote their time to read an instruction of Murphy Temperature SWICHGAGE A20 Series. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
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First and foremost, an user manual of Murphy Temperature SWICHGAGE A20 Series should contain:
- informations concerning technical data of Murphy Temperature SWICHGAGE A20 Series
- name of the manufacturer and a year of construction of the Murphy Temperature SWICHGAGE A20 Series item
- rules of operation, control and maintenance of the Murphy Temperature SWICHGAGE A20 Series item
- safety signs and mark certificates which confirm compatibility with appropriate standards
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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Murphy Temperature SWICHGAGE A20 Series alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Murphy Temperature SWICHGAGE A20 Series, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Murphy service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Murphy Temperature SWICHGAGE A20 Series.
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After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
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 Equipment ■ Critical/High T emperature Limit Switch Is V isible and Adjustable (Most Models) ■ Contact(s) Isolated From Ground Description The A20 Seri[...]
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Page 2
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. (38 mm) 1/2 NPT M U R P H Y S W I C H G A G E ® Contact Adjustment 1/16[...]
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Page 3
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. When the snap-switch trips (preset point), on rising temperature, the[...]
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Page 4
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. Range †† Base Model A20T A20TL A20TO A20TE A20TABS A20TB A20TH ____ – ____ – ____ – ____ – ____ Single scale (°C) 70C = 0-70°C 100C = 45-100°C 120C = 50-120°C 140C = 60-140°C 1[...]