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Table of Contents
Summary of Contents for Reka HKRST 10FSK 500
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Page 1: Front Page
Maskinfabrikken REKA A/S. Vestvej 7. DK-9600 Aars. Tlf (+45)98624011. Telefax (+45)98624071 reka@reka.com www.reka.com E-mail: Web: Boiler HKRST 10FSK 500 / FSK 750 Version: July, 2002 (revised 10.11.2004) Manual – English Wood Pellets, Grains and Chips... -
Page 2: Table Of Contents
Index Paragraph Subject Page Front Page................................1 Index..................................2 Conformity Declaration............................3 Certification – Recommended Settings – Start-up with a new unknown fuel............4 Chapter 1 General Information General Information....................... 5 Rating Plate Information......................5 Chapter 2 Warnings Information about Risks ......................6 Use of the Boiler........................ -
Page 3: Conformity Declaration
Conformity Declaration Manufacturer: Maskinfabrikken REKA A/S, Vestvej 7 DK-9600 AARS We hereby declare that the following unit: REKA boilers HKRST MR 10 kW are in conformity with the following EU-directives: 98/37/EC – Machinery 72/23/EEC – Electrical Material 89/336/EEC – EMC... -
Page 4: Certification - Recommended Settings - Start-Up With A New Unknown Fuel
CERTIFICATION Boiler HKRST/V-FSK 20 / 30 / 60 Same Principle as HKRST – MR 10 Has been tested at the Testing Station for Small Biofuel boilers and can use the following fuels: HKRST-FSK 20: Wood pellets with approx. 8 % water of total weight HKRST-FSK 30: Wood pellets with approx. -
Page 5: Chapter 1 General Information
Smoke outlet Right or left Rating Plate Information Manufacturer: Maskinfabrikken REKA A/S, Vestvej 7, 9600 Aars, Denmark Tel (+45) 98 62 40 11 Fax (+45) 98 62 40 71 Trade Name: Pushing Grate Boiler Type: HKRST 10 kW... -
Page 6: Chapter 2 Warnings
Only certified installers/ blacksmiths and personnel from Maskinfabrikken REKA A/S are allowed to repair this boiler during the guarantee period. We recommend that service and service agreement is carried out by REKA’s certified dealers with qualified personnel. You find our dealer list on www.reka.com. -
Page 7: Chapter 3 Operation Of The Unit
Operation of the Unit Operation of the Unit The complete unit consists of a pre-treatment / dosing unit, f. inst. a straw cutter, a hydraulic silo discharge, a cone silo discharge, a grain pit, or a coal pit etc. The fuel passes through a fireproof lock (or, if there is only a fuel container, through a feed screw) with a sprinkler, and the feed screw conveys the fuel onto a moving pushing grate where the total combustion takes place by added primary and secondary air. - Page 8 Blower Casing (Regulation of Primary Air) Blower Secondary Primary 100% Secondary 100% (Open damper) Primary Damper Primary 5% Secondary 100% (Closed damper) Primary air Modulating operation of the boiler adjusts the total air. Use the primary air valve to adjust the primary air (See table on page 4)
- Page 9 Boilers with fresh lining Boilers which are started up for the first time are to be pre-heated and dried up according to the instructions of the brickwork supplier. See the enclosed instruction (only for HKRSV) - Ignition Start the unit and keep the worm activated on the display till fuel has covered first grate. Stop the firing and place paper and wood on top of the fuel (some kindling, if necessary) and light it up.
- Page 10 During Operation The flue gas damper has to be adjusted so that there is the necessary low pressure in the combustion chamber, measured at the door (approx. 1 to 1.5 mm WC). If the draught is regulated automatically, you must try now and then whether the setting is correct and, if necessary, clean the lambda probe.
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Page 11: Failure During Start, Operation Or Stop
Failure during Start, Operation or Stop Irregular Operation Switching Off of Motors Objects such as stones, wood pieces, rags and the like which may be found in the fuel can get stuck between the worm and the worm casing. This will cause the thermo fuse (motor safety switch) to switch off the motor and break the main circuit. -
Page 12: Other Information
Oils corresponding to Castrol: Hypoy 80w/90c or Shell: Spirax 90 EP or similar. Note! The variators of the variable gears must be greased with a special synthetic oil which you may buy from Maskinfabrikken REKA A/S. Cleaning of the Boiler Combustion chamber, flue pipes, smoke exhauster and the space under the grate must be cleaned regularly. -
Page 13: Where To Keep The Manual
Cleaning of the Water Rooms At the first start-up the drain cock at the bottom of the boiler must be opened shortly till mud stops running out. After the first year or later under any circumstance every second year cleaning plugs and hand holes must be opened and the boiler must be rinsed well with a water hose. -
Page 14: Chapter 4 Assembling - Disassembling - Repair - Erection
Assembling – Disassembling – Repair - Erection 4.1 Erection Place the boiler on the base and right it. Make sure that the boiler is horizontal or is falling towards the bottom drain valve and is horizontal on the transverse shaft. Assembling boiler and fuel container: Insert the green flange to the right in the black flange shown on the photo to the left, and tighten the four bolts. -
Page 15: Disassembling
4.2 Disassembling The unit is disassembled in the opposite order Fireproof Lining of the Combustion Chamber - Disassembling The combustion chamber is lined with 7 firebricks. The side bricks are different in pairs, and the smooth side must face the fuel (because of better fitting to the grate bars). -
Page 16: Specification Of Boiler Hkrst-Mr 10
In order to prevent smoke formation the fuel container must never be completely emptied. The fuel container must never be overfilled so that the lid cannot be closed tightly. Technical Specifications & Enclosures 5.1 Specification of Boiler HKRST-MR 100 Boiler Specifications Nominal output 10 kW Fuel consumption... -
Page 17: Parts List Motors/Control
Hydrophore REKA Smoke Exhauster type R2A 150-AC01-16 1800 32W REKA Maskinfabrikken REKA A/S reserves the right to change/replace the above parts with equivalent parts from other sub-suppliers without any further notice. Priming Reset Control Panel Note! The power supply of the control panel must be fitted with a CEE-plug... -
Page 18: Sprinkler System
Sprinkler System for Stoker FSK Rubber membrane Hydrophore Non-return valve Ball tap Sprinkler valve must be activated while assembling the unit and at least once a year. See also assembly instruction of the SYR- valve. (Breaker tap) Dirt trap Drain cock Sprinkler valve Container pushbutton... -
Page 19: Expansion
Expansion The Unit can be made as a closed Volume of the pressure expansion (in litres) V can be calculated as follows: = (007 x t – 2.5) x (P + 1) 100 x (P – P = Temperature in °C when the priming fuse interrupts the firing = The opening pressure of the safety valve, in bar = Pre-pressure of the expansion tank, in bar V = Total water content in litres... -
Page 20: Smoke Exhauster
Ø 215 mm, Ø 250 mm The terminal block and the control programme in the control panel of all the REKA HKRST/V boilers, 20 to 30 kW, are prepared for the building in of this smoke exhauster. -
Page 21: Stoker Control - Control Panel
Stoker Control PCT 258 OXYGEN Pricatech +45 97 91 15 57 Hans Z. Thellesen, Tel +45 75 64 56 40... -
Page 22: Index
Safety ............................27 The Boiler Output is Distributed on Three Steps and One Clearance plus Interval..27 Advanced Operation ......................28 Diagram of Menu Settings: REKA 20/30 kW ............29-30 Fault Finding ......................... 31 Wiring Diagram ........................32 Description The control unit operates one single-phase blower and a three-phase stoker motor as well as the moving grate, the smoke exhauster (if installed), and the ash screw. -
Page 23: Daily Operation
Daily Operation The control unit is self-setting, i.e. it sets itself to optimal operation by measuring the boiler temperature and the oxygen content of the smoke. Once the fuel and the boiler temperature have been set, further adjustments should be avoided. Hereafter the operator only has to fuel the unit, remove the ashes, clean the boiler, clean the smoke flue, and clean the smoke exhauster. -
Page 24: Interval Operation
That is why REKA’s boilers can burn very difficult fuels with good results. Interval Operation When the unit stops temporarily at low heat consumption, there is a periodically short stoking for 1 second to prevent backfire. The length of the intervals between stokings is set at the second point of the menu (see “Normal Operation”... -
Page 25: Advanced Operation
screw feeds extra fuel for 1 second to start the higher output. No fuel is admitted, however, within 3 minutes from the last shift. Correction Factor A correction factor is used to regulate between the output stages in order to maintain the set temperature The basic value of the correction factor is 0 each time the unit has been stopped. - Page 26 Main Menu PAUSE Ilt 16% OPSTART Ilt 10% STOP Ilt 18% TRIN 2 Ilt 8% TEMP66° PRG1 TEMP54° PRG1 TEMP49° PRG1 TEMP 65° PRG 1 Menu Programme 1: Woodpellets, grain and other compact fuels BRAENDSELSTYPE Programme 2: Mixed TRAEPILLER PRG1 Programme 3: Chipped wood, flakes and other light fuels Menu PROGRAMMERING...
- Page 27 Background Menu: (from main menu:) Opstart + Menu Higher oxygen content at output stage I PROGRAMMERING 10% is approx. 1 over 9% = 10% ILTTRIN 1+ Menu Lower oxygen content at output PROGRAMMERING stage III ILTTRIN 3- 20 is approx. 2 under 9% = 7% Menu Set the operating time of the stoker PROGRAMMERING...
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Page 28: Fault Finding
Fault Finding Problem Cause / Solution Unburnt fuel in the ashes Too little underblast. Open the lower damper at the back of the boiler False air so that the oxygen probe measures wrongly. Check that there are no open dampers or leaks More air is required for the combustion. -
Page 29: Wiring Diagram
Wiring Diagram Power: Three phases for the manual safety switch of the motor Other Connections: Supply, N To be connected to 5 (used to be priming) Not in use (used to be priming) Not in use (used to be door) To be connected to 2 (used to be door) Blower, overblast –... -
Page 30: Assembly Drawing
HKRST - 10kW. Assembly Drawing of the Fireproof Lining of the Combustion Chamber Top brick, two-piece, 0175C Secondary air nozzle Inclined brick top 0176B pipe Rear side brick Left and right 0174B Stoker Worm Front Door Fuel Foremost right side brick, front door view 0173 Foremost left side brick, front door view 0172 Flame Firebricks, order No. - Page 31 Ing. Karl +43 0732 +43 0732 Gaumberg 6 4060 Leonding Agrartechnikgeräte Velechovsky 678 566 678 566-14 FRANKRIG: 38 rue des Bouts de la REKA France Carsten Ville Gaillon sur Olesen 78250 Gaillon sur 608063478 Montcient Holland: Machinefabriek +31-(0)50- +31-(0)50- Duinkerkenstraat 11...
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