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Summary of Contents for YOKOI KIKAI KOSAKUSHO HOPE CRU-10
- Page 1 HG0T063E HOPE C R U CRUCIBLE SELF REGENERATIVE GAS BURNER HANDLING MANURLS YOKOI KIKAI KOSAKUSHO CO., LTD. Head Office: 2720-1, Oboraguchi, Nakashidami, Moriyama-ku Nagoya 463, Japan Tel: +81-52-736-0773 Fax: +81-52-736-0...
- Page 2 TABLE OF CONTENTS 1． TBLE OF CONTENTS ・・・・1 2．Inspection of Product and Accessories, and Outline and・ Features ・・・・2 3． Specification ・・・・3 4．Actuator Auto Switch ・・・・4 5． ・・・・5 Pressure Switch for Assist Air 6．Installation ・・・・6 7． Piping .Monitoring of Main Flame ・...
- Page 3 Thank you for your selection of CRUCIBLE SELF REGENERATIVE GAS BURNER Type CRU Please carefully read this instruction manual in order for you to be fully satisfied with the performance of this burner and to secure the safety in operation, maintenance and inspection.
- Page 4 Specification Type Main Pilot Main Pilot Assist Air Cap kw Cap. kw Air Flow Air Flow Flow N ㎥/h N ㎥/h N ㎥/h CRU-10 CRU-20 Standard Pressure Main air pressure 4kPa(CRU-10)，5kPa(CRU-20) Gas pressure 10kPa Pilot Gas pressure 6kPa 0.3MPa Air pressure for driving the actuator Assist Air 0.1MPa Weight...
- Page 5 Actuator Burner Type CRU-10 CRU-20 CDRQ2B20－01 CDRQ2B40－01 Actuator Type l/min 0.2×2 0.6×2 Air consumption Standard Pressure 0.3 MPa Auto Switch Load voltage Electrical Indicator Special Applicable Wiring type Auto switch model function load entry light Solid With State Grommet indicator 2-wire D-M9BW Relay,PLC...
- Page 6 Pressure switch for assist air Set the pressure switch by using the following method so that it can be ON when assist air is supplied and OFF when assist air is not supplied:...
- Page 7 Installation １) When separating the burner tile from the pilot burner body, remove the body first. ２) To facilitate the replacement of the heat storage body, mount so that the selector valve is vertically. ３) Back up the outer surface of the burner tile, particularly the lower portion of the outer surface, with fire brick, castable refractory or the like to prevent the burner tile from dropping.
- Page 8 Piping Direct good care to the inside of the pipe not to leave seal tape fractions, bond, １) cutting chips, etc. there which may cause malfunction of the solenoid valve, governor, valve, etc. In connecting the pipes, provide pipe support in proper positions to prevent the ２) application of any excess force ３) Attach an MO type orifice flow meter to each piping.
- Page 9 Main Flame Monitoring In inspecting the main flame, view the flame in the arrow directions from the 2 inspection holes as shown in the below figure. To prevent heat transfer from the furnace wall, air-purge from the mounting part of Ultra Vision. Set the distance from Ultra Vision to the flame monitoring position to within 1.5m.
- Page 10 Operation of the selector valve and main gas solenoid valve at the time of temperature control ● To minimize the fall of the crucible temperature when the main air enters the crucible at the time of temperature control (gas OFF), operate the intake valve alone in reverse to the exhaust valve and the 3-port valve (Set the intake valve OFF [ON] when the exhaust valve and the 3-port valve are ON [OFF]).
- Page 11 Flow sheet...
- Page 12 Test Operation Preparing Confirm that all gas cocks are closed. １) Check the gas piping for leak with air or nitrogen gas. ２) Confirm that all instruments in each line of air and gas can operate normally. ３) Confirm that gas is in supply under the specified pressure and that the inside of the ４) piping is being substituted.
- Page 13 Inspection Check the orifice differential pressure between air and gas, and if there is any deviation, １) readjust the differential pressure (semiannually or on a timely basis according to the status of use). In starting the operation (with the furnace at a cold temperature), set the reference ２) burner pressure appropriately, and record the combustion air differential pressure under that pressure.
- Page 14 Ceramic Ball Replacement Ceramic Ball ② Supply Port ① Ceramic Ball Discharge Spout Saucer Place a saucer under the lid １) ① Loosen the tap bolt that fixes the lid , and remove one of the 2 crank bolts. ２) ①...
- Page 15 Disassembly When disassemble is made, wait until the furnace cools down. Also, be sure to wear protective ※ gloves. Confirm that the power supply to the combustion blower and other power supplies are １) OFF. Confirm that all gas cocks are closed. ２) Loosen the union, etc.
- Page 16 Assist Air Nozzle Replacement The assist air body , the assist air pile and the assist air nozzle are welded together into one unit. ⑦ ⑩ ⑪ When the bolt is removed from the pilot air body, they come off. Replace them if it is necessary according to the extent of damage.
- Page 17 Troubleshooting D o not ignite. Y E S A ir Inspect the blow er and each com ponent unit of the air line. Gas supply and air sup ply are normal? G as Inspect each com ponent unit the gas line. YE S Inspect the pilot burner, and T he pilot burner...
- Page 18 Structural drawing...
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