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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Omega PSW20, 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.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Omega PSW20 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Omega PSW20. 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.
What should a perfect user manual contain?
First and foremost, an user manual of Omega PSW20 should contain:
- informations concerning technical data of Omega PSW20
- name of the manufacturer and a year of construction of the Omega PSW20 item
- rules of operation, control and maintenance of the Omega PSW20 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Omega PSW20 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 Omega PSW20, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Omega 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 Omega PSW20.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Omega PSW20 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
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
PSW20 Series Pressure, vacuum or differential pressure switches M4067-0504 Shop online at: omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info Installation Instructions for OMEGA PSW20 Series: Pressure, Vacuum and Differential Pressure Switches. General The PSW20 series is single pole switch that can be used as a press[...]
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Page 2
Standard Electrical rating Repeat Accuracy Part Number Max. Resistive Min Resistive Constant Temperature Contact Resistance (ohms) PSW20A 750ma 250VAC 5 ma 3 VDC +/- 4% 0.04 PSW20B 1 amp 250 VAC 5 ma 3 VDC +/- 3% 0.02 Body Acetal Diaphragm EPDM is standard; Nitrile available. NOTE: EPDM should not be used in petroleum applications Contacts Gold pla[...]
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Page 3
Media in Contact with Electrical Contacts Note that the pressure media entering through Port A is in direct contact with the electrical contacts in the switch, whereas the pressure media entering through Port B is separated from the electrical contacts by the diaphragm. Note: The EPDM diaphragm should not be used with petroleum products. Specify Ni[...]
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Page 4
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply . OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct, but OM[...]