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Summary of Contents for Wood-mizer MK20-2
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® Wood-Mizer Dry Kilns Installation & Operation Manual MK20-2, MK20-4, Rev. B1.00 MK40-2, MK40-4 Safety is our #1 concern! Read and understand all safety information and instructions before operating, setting up or maintaining this machine. Form #1212...
Table of Contents Section-Page SECTION 1 GENERAL INFORMATION Introduction ....................... 1-1 Getting Service ......................1-2 General Contact Information ..........1-2 Specifications ......................1-3 Electric Schematics ....................1-5 Electrical Components List ..................1-8 SECTION 2 SAFETY Safety Symbols......................2-1 Safety Instructions ..................... 2-2 SECTION 3 INSTALLATION AND SETUP Materials ........................
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Table of Contents Section-Page SECTION 5 DRYING SCHEDULE Kiln Drying Schedule ....................5-1 SECTION 6 GLOSSARY SECTION 7 IMPORTANT INFORMATION SECTION 8 EMC CHART SECTION 9 WMUK MODULAR KILN RECORD SHEET SECTION 10 REPLACEMENT PARTS 10-1 10.1 How To Use The Parts List ..................10-1 10.2 Electrical Components.....................
General Information Introduction SECTION 1 GENERAL INFORMATION Introduction Thank you for selecting our WMDK Kit series of kiln-dryers. This manual will assist you in assembling and operating the kiln. It will also guide you in how best to kiln-dry various types of lumber, and how to obtain the best results with the equipment.
Introduction Getting Service Getting Service Wood-Mizer is committed to providing you with the latest technology, best quality and strongest customer service available on the market today. We continually evaluate our customers’ needs to ensure we’re meeting current wood-processing demands. Your comments and suggestions are welcome.
Introduction Specifications Specifications See Table 1-1. Specifications for the kiln electric equipment are shown below. Model No. WMDK Kiln Module Power 2.1 kW 4.1 kW (high power module) Power Consumption (one 2.3 kW/h module) 4.3 kW/h (high power module) Single Fan Power Exhaust Fan Power 145 W 290W (two fans required for high power modules)
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Introduction Specifications See Table 1-3. Electrical Requirements are listed in the following table. Number of Current Rating for 2kW per Current Rating for 4kW per Fan Modules Module kiln (Amps) Module kiln (Amps) TABLE 1-3 See Table 1-4. The overall dimensions of the WMDK 20’ and 40’ container/chamber kiln are listed below.
Safety Safety Symbols SECTION 2 SAFETY Safety Symbols The following symbols and signal words call your attention to instructions concerning your personal safety. Be sure to observe and follow these instructions. DANGER! indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING! suggests a potentially hazardous situation which, if not avoided, could result in death or serious injury.
It is always the owner's responsibility to comply with all applicable federal, state and local laws, rules and regulations regarding the ownership, operation of your Wood-Mizer kiln. All Wood-Mizer kiln owners are encouraged to become thoroughly familiar with these applicable laws and comply with them fully while using the kiln.
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Safety Safety Instructions KEEP HANDS AWAY WARNING! Always keep clear of exiting hot air through the exhaust system. Keep hands, feet and any other objects away from the exhaust when operating kiln. Failure to do so may result in serious injury. USE PROPER PROCEDURE WHEN CONDUCTING ELECTRICAL SAFETY CHECKS AND MAINTENANCE DANGER!
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Safety Safety Instructions KEEP SAFETY LABELS IN GOOD CONDITION IMPORTANT! Always be sure that all safety decals are clean and readable. Replace all damaged safety decals to prevent personal injury or damage to the equipment. Contact your local distributor, or call your Customer Service Representative to order more decals.
Installation and Setup Chamber Location Chamber Location The kiln chamber for the Modular Kiln system should be sited on level and firm ground taking into consideration access for handling equipment and loading/unloading the timber. A concrete pad is not necessary if an insulated container is used.
Installation and Setup Fan Module Installation Fan Module Installation In this installation process we will describe the process for a 20’ kiln with 4 modules. NOTE: All references to right and left are as viewing the kiln chamber from the door end. CAUTION! The fans can work at temperatures not exceeding 60 The fan module has already been pre-assembled at the factory and no further assembly is...
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Installation and Setup Fan Module Installation NOTE: Mounting in the isothermal container is shown on the pictures below. Rivet the mounting strip in the remaining four holes. FIG. 3-3 Bolt the module to the mounting strip. FIG. 3-4 WMDKdoc020322 Installation and Setup...
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Installation and Setup Fan Module Installation Drill the holes for the bottom rivets and rivet the module to the side wall. FIG. 3-5 NOTE: It is very important that the bottom part of the module is perpendicular to the side wall (where the fans are mounted).
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Installation and Setup Fan Modules Layout for 20’ and 40’ WMDK Kit. 3.4.1 Fan Modules Layout for 20’ and 40’ WMDK Kit. 20’ Kiln Fan Module No. 4 Fan Module No. 3 Fan Module No. 2 Fan Module No. 1 Plenum Blanking WMDKdoc020322 Installation and Setup...
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Installation and Setup Fan Modules Layout for 20’ and 40’ WMDK Kit. Fan Module 40’ Kiln No. 6 Fan Module No. 5 Fan Module No. 4 Fan Module No. 3 Fan Module No. 2 Fan Module Control Box No. 1 9x4kW (095376-9) Fan Module...
Installation and Setup Plenum Blanking Kit Installation Plenum Blanking Kit Installation Position the blanking section against the last fan module. Mark, centre punch and drill pilot holes for mounting screws. Cut the blanking section to length using a jig saw. See Figure 3-6.
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Installation and Setup Plenum Blanking Kit Installation The blanking section must fill the gap between the last fan module and the door when closed. Rivet the blanking section to the kiln body. See Figure 3-7. FIG. 3-7 Cut the tarp baffle to the same width and use the tie wraps to connect it to the adjacent tarp section.
Installation and Setup Control Box Installation Control Box Installation DANGER! Make sure all electrical installation, service and/or maintenance work is performed by a qualified electrician and is in accordance with EN 60204 Standard. NOTE: Mounting in the isothermal container is shown on the pictures below. The control box must be installed on the outside wall of the kiln chamber on the right hand side from the door, at least 1250mm from the front chamber edge (which will prevent the chamber door from hitting the electric box) and about 1200mm above the ground (the...
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Installation and Setup Control Box Installation Next, bolt the control box to the rivet nuts FIG. 3-8 Drill a hole for mounting the cable protection conduit using the 60mm hole saw. FIG. 3-9 1.If you are installing in room other than a container, use wood screws or concrete mounting dowels. Installation and Setup WMDKdoc020322 3-12...
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Installation and Setup Control Box Installation Insert the cable protection conduit into the hole. Next, from the inside of the chamber, drill holes through the protection conduit and the kiln wall and rivet the protection conduit. FIG. 3-10 Cut out a gap in the first module support tray above the protection conduit. The gap ...
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Installation and Setup Control Box Installation Next, route the fan module wires through the protection conduit. FIG. 3-12 IMPORTANT! When starting the kiln for the first time, check that fan motor rotation direction is as indicated by the arrow located on the motor body (fan guard). If the rotation direction is incorrect, change phases in electrical box.
Installation and Setup Thermometer Assembly Installation Thermometer Assembly Installation NOTE: Mounting in the isothermal container is shown on the pictures below. Mount the thermometer assembly on the right hand side of the cable protection conduit, about 900mm above the floor. FIG.
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Installation and Setup Thermometer Assembly Installation Route the thermometer wires (marked P1 - for dry thermometer and P2 - for wet thermometer) through the protection conduit. Next, pull the wick over the wet bulb thermometer. Wet Thermometer Wick FIG. 3-15 Installation and Setup WMDKdoc020322 3-16...
Installation and Setup Exhaust Module Installation Exhaust Module Installation ∅ Drill a hole ( 102mm) for the exhaust fan through the wall of the kiln. Mount the sliding exhaust valve to the outside chamber wall. To do that, position the valve on the chamber wall, mark and drill the mounting holes.
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Installation and Setup Exhaust Module Installation Create a sandwich of the vent back plate, the sliding plate and the front plate and screw the completed assembly to the outside of the kiln. Tighten enough to allow the sliding plate to move freely. This type of mounting is for 20ft container, but for different types might be differen Exhaust Vent Back Plate...
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Installation and Setup Exhaust Module Installation to install the safety grate. Route the fan wires through the protection conduit. 480mm 115mm 105mm 760mm Safety Grate FIG. 3-18 3-19 WMDKdoc020322 Installation and Setup...
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Installation and Setup Exhaust Module Installation Mount the exhaust fan cable box. Connect the exhaust fan using the cable box according to the electric diagram. FIG. 3-19 Secure the wires inside the chamber using a cable braid. FIG. 3-20 Installation and Setup WMDKdoc020322 3-20...
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Installation and Setup Exhaust Module Installation Secure the wires in the protection conduit using a silicone sealant. FIG. 3-21 Connect the fan modules and the exhaust fan to the electric box in accordance with the electric diagram. 3-21 WMDKdoc020322 Installation and Setup...
Installation and Setup Air Intake Installation Air Intake Installation ∅ Drill a hole ( 102mm) for the air intake. Next, mount the air intake to the right side wall of the kiln, at the back of the kiln. Seal the air intake using a silicone sealant. FIG.
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Installation and Setup Air Intake Installation Next, mount the safety bar. The bar prevents the kiln operator from locking him/herself in the kiln chamber. To do that, mark and drill the mounting holes as shown on the drawing 3-23. Drill only through the outer skin of the kiln using a 11 mm drill bit.
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Installation and Setup Air Intake Installation Stick the exhaust valve scale and the EMC chart. Exhaust Valve Scale EMC Chart FIG. 3-24 Installation and Setup WMDKdoc020322 3-24...
Installation and Setup Plenum Baffle 3.10 Plenum Baffle Each fan module unit and plenum blanking kit is supplied with a tarp baffle. Each tarp baffle has eyelets on three sides. The side without the eyelets is attached to the fan module using the pre-drilled pinch strip supplied.
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Installation and Setup Plenum Baffle 2. Fasten the brackets to the left chamber wall using the rivets provided. Baffle Brack- FIG. 3-26 3. Using a sharp spike, make holes necessary for mounting the baffles to the panel’s mounting strip. Use the strip as a template. Make the holes in each baffle. FIG.
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Installation and Setup Plenum Baffle 4. Bolt the strip to the fan module. FIG. 3-28 5. Connect the baffles together using the tie wraps shown in the figure below. 6. Attach the securing ropes to each eyelet at the bottom of the baffles. Securing Ropes Wraps...
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Installation and Setup Plenum Baffle 7. Tie the securing ropes to the baffle brackets. FIG. 3-30 Installation and Setup WMDKdoc020322 3-28...
Installation and Setup Internal Track Assembly (optional equipment) 3.11 Internal Track Assembly (optional equipment) IMPORTANT! Make sure to align the tracks in the kiln chamber and those outside. Failure to ensure that the inner and outer tracks are aligned and level may result in difficulty in loading and unloading the kiln.
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Installation and Setup Internal Track Assembly (optional equipment) Angle Stop Bar Lag Bolt Tie Bar Internal Track M10x16 Bolts Ribbed Floor FIG. 3-30 Use the threaded anchor bolts to secure the track to the ribbed floor. Installation and Setup WMDKdoc020322 3-30...
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Installation and Setup Internal Track Assembly (optional equipment) The removable connecting section should be made by bolting one section with the tie bars to the timbers as shown. The timbers should have correct dimension to ensure a flat and even connect between the inner and outer tracks. Lag Bolt Tie Bar Dowel Pins...
Installation and Setup External Track Assembly 3.12 External Track Assembly Assemble the external track onto a frame or wooden bearers to suit the installation. Follow the same procedure as for the internal track, except that the extended threaded dowel pins should be located in end of the external track closest to the door. See Figure 3-31.
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Installation and Setup External Track Assembly Place the angle cross bar at the end of the external track furthest from the kiln door. This angle cross bar acts as a stop to avoid the timber cart falling off the end of the bearer assembly.
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Installation and Setup External Track Assembly Place the provided kiln lumber carts on the external track for the lumber to be loaded into the kiln. See Figure 3-33. External Track Lumber Kiln Carts FIG. 3-33 Installation and Setup WMDKdoc020322 3-34...
Operation SECTION 4 OPERATION Timber Preparation Preparing timber to be placed in the kiln is one of the most important phases of the kiln drying process. If the following procedures are taken, the first step toward high quality, kiln dried timber will have been taken. Timber must be sawn or planed to a uniform thickness.
Operation Stickering The Timber Stickering The Timber Stickers must be sawn or planed to a uniform thickness in order for even pressure to be applied to each sticker which allows the timber to dry straight. Stickers should be placed directly over each other so that the weight transfer is straight down.
Operation Hold-down System Hold-down System After the timber has been properly put on stickers, weight (for ex. concrete or other heavy material) should be placed directly above each row of sticks. These weights will hold the top layers of timber flat as well as letting a little air flow between the top layer of timber and the plenum baffle which lays over the timber.
Operation Loading The Kiln Loading The Kiln The loading carts should be positioned on the external track with a 2 ft. (600mm) space between each cart so that the pack stickers bear exactly over each cart bearer. It is important that the end of the pack which will be against the back wall when loaded should be the “fair end”...
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Operation Loading The Kiln See Figure 4-2. Blanking Sheet Material FIG. 4-2 WMDKdoc020322 Operation...
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Operation Loading The Kiln See Figure 4-3. Plenum Baf- Blanking Sheet Material FIG. 4-3 LEFT HAND KILN SHOWN The Plenum baffle is then placed over the top of the charge and secured to the wall cleats using the tie ropes supplied. The baffle must be tied down so that it is taut and does not block the airflow into the upper layers of the charge.
Moisture Content are achieved according to the schedule. This record sheet can also serve as a useful after-sales support tool. The Wood-Mizer branch staff will be able to use it to advise if you are unsure of the progress of your load.
Operation Temperature Controller Temperature Controller See Figure 4-4. The kiln temperature controller is shown below. FIG. 4-4 1. Temperature Setting Press the S key and hold it until ”SP1” appears on the display; Release the S key; the set temperature value will be shown; ...
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Operation Temperature Controller Set the value to 95; Press the S key again. WMDKdoc020322 Operation...
Operation Checking The Depression Checking The Depression When the kiln is in operation the chamber temperature and depression should be checked each day. IMPORTANT! Before starting the kiln you should to completely fill up with distilled water the thermometer tank. When the kiln is in operation you should refill about 100 ml of distilled water each day 5 minutes before checking the temperature and the depression.
Operation Preconditioning For Well Air Dried Stock Preconditioning For Well Air Dried Stock For customers who are drying well air-dried stock, i.e. less than 25% MC a preconditioning cycle is advised. This will help to de-stress the timber before the kiln drying process begins.
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Operation Conditioning Process Conditioning Process We refer to the conditioning process as the point where the exhaust valve is totally shut. At that point, core moisture migrates to the exterior of the board and to the surrounding air inside the chamber. This moist air is not allowed to be vented out of the chamber and now acts as our conditioning agent, and therefore continues to be circulated throughout the timber.
Drying Schedule Kiln Drying Schedule SECTION 5 DRYING SCHEDULE Kiln Drying Schedule See Table 5-1. The WMDK drying schedules for various species of wood are shown below. Species Thickness Schedule # Species Thickness Schedule # HICKORY 38mm 25mm 32mm HICKORY 50mm 38mm LARCH (Larix...
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Drying Schedule Kiln Drying Schedule CEDAR 50mm RED GUM 32mm CHERRY 25mm RED GUM 38mm CHERRY 32mm RED GUM 50mm CHERRY 38mm OAK(Quercus robur) 25mm CHERRY 50mm 32mm COTTONWOOD 25mm 38mm COTTONWOOD 32mm 50mm COTTONWOOD 38mm SAP GUM 25mm COTTONWOOD 50mm SAP GUM 32mm...
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Drying Schedule Kiln Drying Schedule The schedules shown below will dry your timber to approximately 10%. For other end moisture contents you should follow the following process: 1. Select the appropriate schedule for the species and timber to be dried 2.
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Drying Schedule Kiln Drying Schedule See Table 5-4. Schedule #3 is shown below. Schedule #3 Temperature ºC load load load load load Initial 1º Depression 5.5º Depression 8º Depression 11º Depression 8º Depression TABLE 5-4 125 means there are two outlet valves, one is 100% open (100 on the scale) and the second is 25% open (25 on the scale) See Table 5-5.
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Drying Schedule Kiln Drying Schedule See Table 5-7. Schedule #6 is shown below. Schedule #6 Temperature ºC load load load load load Initial 3º Depression 8º Depression 11º Depression 8º Depression TABLE 5-7 125 means there are two outlet valves, one is 100% open (100 on the scale) and the second is 25% open (25 on the scale) See Table 5-8.
SECTION 6 GLOSSARY DEPRESSION - Temperature Depression is a term used to describe the Relative Humidity of air in the kiln chamber. Air that is 100% humid cannot absorb any more moisture. For example on a misty day washing will not dry outside. The amount of water that air can absorb depends on its temperature.
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EMC or EQUILIBRIUM MOISTURE CONTENT - The moisture content that the timber will come to and will remain indefinitely if left under any constant temperature and humidity. This is important for sheds or rooms where dry timber is to be stored for a long period of time.
SECTION 7 IMPORTANT INFORMATION The drying schedules in this manual are to be used when drying timber in the WMDK Modular Kiln System The schedules outlined are a general guide. However, many kiln operators use more severe drying conditions than those in the schedules while others dry at a more conservative rate.
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on near 100% humidity and temperatures between 18C and 38C. Do not open the door unnecessarily. When the doors are open, you are upsetting the drying conditions and are also wasting heat. In the conditioning stage, it is especially necessary for the door to remain closed to contain the moisture vapor necessary for equalization.
Poland at +48-63-2626000. From the continental U.S., call our toll-free Parts hotline at 1-800-448-7881. Have your customer number, vehicle identification number, and part numbers ready when you call. From other international locations, contact the Wood-Mizer distributor in your area for parts.
Replacement Parts Exhaust Fan Assembly 10.4 Exhaust Fan Assembly REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # FAN ASSEMBLY, EXHAUST 095143 FAN, SEM-2C-146/062 CENTRIFUGAL 094914 VALVE ASSEMBLY, OUTLET 094686 AIR INTAKE, OUTER KRD/B100 DOSPEL 095206 AIR INTAKE, INNER KRO/B100 DOSPEL 095095 10-5 CESHdoc020322...
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Replacement Parts Fan Module 10.5 Fan Module REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # FAN MODULE, DRY KILN 555491 BRACKET, FAN MOUNT 532529 PLATE, FAN MOUNT BRACKET 532530 BRACKET, PLENUN BAFFLE MOUNT 094674 WASHER, 6.4 DIN 125/ISO 7089 (A2-304) STAINLESS STEEL F81053-5 WASHER, 6.1 DIN 127 (A2-304) STAINLESS STEEL SPLIT LOCK F81053-4...
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Replacement Parts Fan Module REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # TERMINAL, HI 2X1 CABLE END F81083-31 GROMMET, 5/8 ID RUBBER P11764 GROMMET, 1" ID RUBBER P11765 BRACKET, 5M PLENUM BAFFLE ROPE (ACID-RESISTANT) 095090 10-7 CESHdoc020322 Replacement Parts...
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Replacement Parts 4kW Heater Assembly 10.6 4kW Heater Assembly REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # HEATER ASSEMBLY, 4kW DRY KILN 555493 BRACKET WELDMENT, HEATER 533720 HEATER, SINKOPLEX 2kW CE 528463 CONTROL, TEMP. LIMIT 180-40F 051921 WASHER, 4.3 DIN 125/ISO 7089 (A2-304) STAINLESS STEEL F81051-3 BOLT, M4X10 DIN 933/ISO 4017 (A2) STAINLESS STEEL...
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Replacement Parts 2 kW Heater Assembly 10.7 2 kW Heater Assembly REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # HEATER ASSEMBLY, 2kW DRY KILN 555492 BRACKET WELDMENT, HEATER 533720 HEATER, SINKOPLEX 2KW CE 528463 CONTROL, TEMP. LIMIT 180-40F 051921 WASHER, 4.3 DIN 125/ISO 7089 (A2-304) STAINLESS STEEL F81051-3...
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Replacement Parts Plenum Blanking Kit 10.8 Plenum Blanking Kit REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # PLENUM BLANKING KIT 095379 BLANKING SECTION 095138 BLANKING SECTION WELDMENT 095137 PROFILE, BLANKING SECTION 094675 BRACKET, PLENUM BAFFLE MOUNT 094674 WASHER, 6.4 DIN 125/ISO 7089 (A2-304) STAINLESS STEEL F81053-5 WASHER, 6.1 DIN 127 (A2-304) STAINLESS STEEL SPLIT LOCK...
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Replacement Parts Track (Optional) 10.9 Track (Optional) REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # END MODULE, TRACK - KILN 095154 SECTION, TRACK END - KILN 094784 TRACK WELDMENT, DRY KILN 094775-1 ANGLE STOP BAR - KILN 094785-1 BOLT, M10x16-8.8 HEX HEAD FULL THREAD ZINC F81003-13...
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Replacement Parts Track (Optional) BOLT, M10x35-8.8 HEX HEAD FULL THREAD ZINC F81003-17 WASHER, 10.5 FLAT ZINC F81055-1 LUMBER CART 094770 Section 10.11 Replacement Parts CESHdoc020322 10-12...
Replacement Parts Decals 10.12 Decals REF. DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # DECAL, EXHAUST VALVE SCALE 098367 DECAL, EMCCHART 098368 10-15 CESHdoc020322 Replacement Parts...
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EC declaration of conformity according to EC Machinery Directive 2006/42/EC, Annex II, 1.A Manufacturer: Wood-Mizer Industries sp. z o.o. Nagórna 114, 62- Tel. +48 63 26 26 000 This declaration of conformity is issued under the sole responsibility of the manufacturer.
INDEX blade guide operation idle side 10-3 checking the depression 4-10 Conditioning Process 4-11 hold-down system kiln operation loading the kiln Preconditioning 4-12 Container Location stickering the timber Container Location temperature controller timber preparation drying schedule kiln drying schedule service information general contact info specifications general information...
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