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The Arimax step grate boiler is composed of the following parts:

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central heating boiler 700-300 kW 4-10 bar

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ash base

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step grate burner integrated into the ash base 

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ceramic vault for the firebox

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combustion air fans (primary, secondary and tertiary)

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burner augers (2 pcs)

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grate shaker (optional)

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ash augers 1-2 pcs (optional)

The following may also be delivered with the boiler:

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flue gas cleaner (cyclone)

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vacuum-controlled flue gas extractor

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automatic sweeping of the convection section

 

SYSTEM DESCRIPTION

Summary of Contents for ARIMAX 700

Page 1: ...INSTALLATION OPERATION AND MAINTENANCE ARIMAX 700 3000kW Step grate boiler ...

Page 2: ...2 TABLE OF CONTENTS System description 4 6 Operating and maintenance procedures 7 Safety systems guarding against burn back 8 9 Maintenance 10 Technical specifications 11 ...

Page 3: ...3 ARIMAX 700 3000kW Step grate central heating boiler for wood chip heating ...

Page 4: ...he fuel to the burner The combustion air fans introduce combustion air into the combustion process There are separate fans for primary secondary and tertiary air Once the feed augers have emptied the intermediate tanks the stoker auger is activated by means of an optical level guard in an intermediate tank The stoker auger refills the intermediate tanks and stops If the stoker auger runs for a pre...

Page 5: ... grate consists of small cast iron blocks which are arranged in steps The primary combustion air comes from under these blocks and is mixed with the fuel The secondary and tertiary air is controlled by its own fans at different stages of combustion The processes of connecting up and cleaning the boiler are described in separate instructions SYSTEM DESCRIPTION ...

Page 6: ... into the ash base ceramic vault for the firebox combustion air fans primary secondary and tertiary burner augers 2 pcs grate shaker optional ash augers 1 2 pcs optional The following may also be delivered with the boiler flue gas cleaner cyclone vacuum controlled flue gas extractor automatic sweeping of the convection section SYSTEM DESCRIPTION ...

Page 7: ...ied out on all moving parts motors fans burner automation system safety equip ment and alarms the operation and direction of rotation of the burner augers the operation and direction of rotation of the stoker auger the oil quantity in the hydraulic unit conveyor stoker operation the operation and direction of rotation of the combustion air fans the operation and direction of rotation of the flue g...

Page 8: ...ue It operates on the pulse pause principle until the tempera ture has fallen It neither stops the production of heat nor emits an alarm 2 Burn back thermostat The automation system is equipped with a sensor When it trips the protection system emits an alarm and turns off the equipment The burner augers are run for 60 seconds so that the overheated fuel can be sent to the boiler ...

Page 9: ... in the sensor has been exceeded The protection system is self acting and even operates in cases of a power cut A large amount of water flows in and forms a water seal in the intermediate tank between the fire and the fuel stoker SAFETY SYSTEMS GUARDING AGAINST BURN BACK ...

Page 10: ...haker is to move the ash from the grate to the ash auger Sweep and clean the boiler in accordance with the boiler instructions A dirty boiler will lower the efficiency and increase fuel consumption considerably Spare parts The step grate is located in the hottest part of the system and so is subject to heat stress The life expectancy of the cast iron blocks can be greatly increased by keeping them...

Page 11: ...IONS Boiler Arimax Bio 700 3000kW 4 10 bar Step grate Cast iron elements Combustion air fans Sodeca CMP 718 2T 0 75kW 4 6 kpl Auger motors Flender CAD68 100L4 2 2kW 45rpm Grate motor Motovario 0 55kW TECHNICAL SPECIFICATIONS ...

Page 12: ...10 03 2009 All Rights to modifications and corrections reserved ARITERM SWEDEN AB Flottiljvägen 15 39241 Kalmar www ariterm se 0771 442850 ...

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