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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Greenheck DFDR-XXX, 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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First and foremost, an user manual of Greenheck DFDR-XXX should contain:
- informations concerning technical data of Greenheck DFDR-XXX
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Table of contents for the manual
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Page 1
DFDR-XXX, SSDFDR-XXX, FDR-XXX, and SSFDR-XXX MODELS 1 1 ⁄ 2 Hour Round Fir e Dampers V ertical and Horizontal Mount Part Number 462721 SAFETY W ARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating, and maintenance instructions thoroughly before i[...]
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Page 2
2 in. TW AIRFLOW SLEEVE LENGTH 2 in. 6 in. max. 6 in. max. (OPTIONAL) RETAINER PLATE DUCT CONNECTION AREA CLEARANCE FOR EXPANSION RETAINER PLATE BLADE LATCH ACCESS DOOR TO BE ON SAME SIDE AS BLADE LATCH DUCT CONNECTION AREA DO NOT PLACE RETAINER PLATE IN THIS GROOVE 2 Pr e-Installation Guidelines The basic intent of a proper installation is to secu[...]
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Page 3
IN THIS GROOVE. RETAINER PLATE DO NOT PLACE IN THIS GROOVE. DO NOT PLACE RETAINER PLATE DAMPER FRAME DAMPER FRAME WOOD STUD MIN 1.00 STUD METAL 1.00 MIN 3 Installation - Continued 2. SLEEVE LENGTH AND W ALL/FLOOR THICKNESS Insert the damper assembly into the prepared opening, to appr opriate depth (see page 2, Fig. 1 ). Recommended maximum and mini[...]
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Page 4
Damper Maintenance Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary , use mild detergents or solvents. If lubrication is desired for components such as axle bearings, do not use oil-based lubricants or any other lubricants that attract contaminants such as dust. Dampers must be maintained[...]