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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Graco 77X540, 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 Graco 77X540 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 Graco 77X540. 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 Graco 77X540 should contain:
- informations concerning technical data of Graco 77X540
- name of the manufacturer and a year of construction of the Graco 77X540 item
- rules of operation, control and maintenance of the Graco 77X540 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 Graco 77X540 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 Graco 77X540, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Graco 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 Graco 77X540.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Graco 77X540 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
Instructions Dyna-Star ® HP Vent Valve Kit Used with the Dyna-Star HP or HF Pump to reduce system pressure and allow injector to reset. For professional use only. Part No.: 77X540 Maximum Working Pressu re: 3500 psi (241 bar , 24 MPa) Important Safety Instructions Read all warnings and instructions in this manual and the Dyna-Sta r HP and HF Pump [...]
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Page 2
Instructions 2 332519F Instructions Warnings See the Dyna-Star HF and HP Pump Instruction manu al for additional warnings. Installation Pressure Relief Follow the Pressure Re lief Procedure whenever you see this symbol. To relieve pre ssure in the system, us e two wrench es working in opposite directions on pump outlet fitting to slowly loosen fitt[...]
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Page 3
Instructions 332519F 3 Vent Valve Installation Reference numbers us ed in these in structions co rre- spond to Parts included in Kit and are provided o n page 5. Parts iden tified with an alpha char acter are user pro- vided or already installed co mponents. To ensure the correct pressure relie f valve is used and pressure settings are correct, alw[...]
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Page 4
Instructions 4 332519F 8. Install vent valve (1) to pump surface using the 3 cap screws (4) included in the k it (F IG . 5). Hold the vent valve tight to the surf ace of th e pump to ensure o-rings stay in place during insta llation.Torque screws to 17-19 ft-lbs (23-26 N.m). 9. Install lubrication line to vent valve pump outlet port marked “0” [...]
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Page 5
Parts 332519F 5 Parts Accessories Technical Data . * Dyna-Star HP Pump Models are rated for 5000 psi (34. 47 MPa, 344 bar) maximum working pr essure, however, when a vent valve is installed on the HP Pump, the maximu m workin g pressure must be reduced to 3500 psi (24.1 MPa, 241 bar). **Flow capability depends on viscosity, type of fluid, temperatu[...]
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Page 6
All written and visual data con tained in th is document reflects the latest product info rmation available at the time of publica tion. Graco reserves the right to make changes at any time without notice. For patent information, see www.graco.com/pate nts. Original instructions. This manual conta ins English. MM 332519 Graco Headquarter s: Minneap[...]