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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Murphy OPLH, 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 Murphy OPLH 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 Murphy OPLH. 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 Murphy OPLH should contain:
- informations concerning technical data of Murphy OPLH
- name of the manufacturer and a year of construction of the Murphy OPLH item
- rules of operation, control and maintenance of the Murphy OPLH 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 Murphy OPLH 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 OPLH, 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 OPLH.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Murphy OPLH 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
OPLH-94122B page 1 of 4 OPLH / OPLHACS Series ■ Combination Level Indicating Gage and Critical Level Limit Switch ■ High and Low Level Limit Contacts Are V isible and Adjustable ■ Designed to Start and Stop Pumps to Maintain Specific Levels ■ Indication only Murphygage ® instrument A vailable ■ Latching Control Relay V ersions A vailable[...]
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Page 2
OPLH-94122B page 2 of 4 (1) Bourdon tube (OPLHC) models in the 20 ft. (6 m) range have an accuracy of 3% full scale. (2) ES option available for the 20 ft. (6 m) range models and above. NOTES: • Options may not be available in combination. Consult factory. • Over range is not to exceed 10% FS above full range. • Calibration is for water. Spec[...]
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Page 3
OPLH-94122B page 3 of 4 8 in. (203 mm) 6-25/64 in. (162 mm) 8 in. (203 mm) Rear mounting holes for surface mounting 3/ 8 -16 UNC-2B 7/ 8 in. (22 mm) deep, 4 places. Removable lid to access adjustable contact knobs. 6-3/4 in. (171 mm) 6-3/4 in. (171 mm) Mounting Hole 7-35/64 in. (192 mm) diameter. Not required for surface mounting. 1/2 NPT optional [...]
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Page 4
OPLH-94122B page 4 of 4 How to Order Base Part Numbers Latching Control Relay Voltage (applies to “BP” models only) Blank = 120 VAC 2 = 12 VDC 4 = 24 VDC Bourdon Tube/Bellows OPLHC Standard=Bronze/Brass OPLHACS Standard=316 Stainless Steel Range/Scale (specify in feet) * Bellows Tube 05 = 0-5 ft. X 10 = 0-10 ft. X 20 = 0-20 ft. X X 30 = 0-30 ft[...]