Azbil AUR890 Series, Руководство пользователя

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Chapter 1. Overview
(2) Starting, running, and stopping of combustion equipment according to a
predefined sequence
• Operates each device according to the predefined sequence and timing.
(3) Safety startup
• Checks the flame detector and the flame detection circuit for flame detection
error each time the start signal is issued.
• Will not start the burner if a failure is detected.
(4) Design that anticipates part failure modes
• At startup, the self-inspection circuit errs on the side of safety if a failure is
detected.
• Never deviates from the ignition sequence.
• The sequence timing cannot cause a dangerous failure. (The ignition time will
not be lengthened.)
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Instructions for proper use
• This device has functions that are extremely important for the safe operation
of combustion equipment. Therefore, use the device correctly, according to this
user's manual.
• The device must be installed, wired, maintained, inspected and adjusted by
experienced specialists who have gained knowledge and skills concerning
combustion equipment and combustion safety devices.
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Precautions on facility design
The facilities that use the combustion safety device must be designed taking into
careful consideration the following safety guidelines and the like.
If the system is designed to a foreign specification, refer to laws and standards in the
relevant country.
• “Technical Policy on Safety Standards for Combustion Equipment in Industrial
Furnaces,” by the Ministry of Health, Labour and Welfare
• "General Safety Code for Industrial Combustion Furnaces"- JIS B 8415
• “Forced Draught Burners - Part 1: Gas Burners” - JIS B 8407-1
• “Forced Draught Burners - Part 2: Oil Burners” - JIS B 8407-2
• “Index of Safety Technology of Industrial Gas Combustion Equipment,” by Japan
Gas Association
• “Safty Guideline for Gas Boiler Combustion Equipment” by The Japan Gas
Association
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Most important points for ensuring safety
The design must take into consideration the following points to ensure safety.
1. Connect loads directly to the device.
2. Make sure that the start check circuit operates correctly at startup.
3. Do not make a manual operation circuit or other bypass circuit for any loads.
4. Use a redundant shutdown system for both main valve and pilot valve.
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Precautions for instrumentation
Since this device does not have a purge function, use an external circuit to
implement one.