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Related Manuals for ARSKA MEPU S Series
Summary of Contents for ARSKA MEPU S Series
- Page 1 USER GUIDE GRAIN DRYER USER GUIDE S / M / C - SERIES D16694_EN...
- Page 2 USER GUIDE ID: D16694_EN...
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Page 3: Table Of Contents
USER GUIDE Contents INTRODUCTION ............................4 WARRANTY AND WARRANTY CONDITIONS ....................5 SAFETY ................................. 6 3.1......................... 7 ENERAL SAFETY INSTRUCTIONS 3.2....................8 MPORTANT SAFETY INSTRUCTIONS FOR DRYER USER 3.3..............................10 IRE SAFETY BASICS OF GRAIN DRYING .......................... 11 4.1. -
Page 4: Introduction
USER GUIDE INTRODUCTION This manual contains the operating instructions for Mepu grain dryers (S-, M- and C-series). The manual provides information about the key components of grain dryers but focuses on the functioning of the dryer machinery. Manuals for other parts of the grain dryer are delivered separately. -
Page 5: Warranty And Warranty Conditions
USER GUIDE WARRANTY AND WARRANTY CONDITIONS The product is intended for professional use. Installation, use and maintenance of the equipment require normal general knowledge and skills related to machines and equipment that a professional farmer should presumably possess. Warranty conditions The dryer machinery is covered by a 12-month warranty from the commissioning date, but the maximum duration of the warranty is 14 months from the invoice date of the Goods. -
Page 6: Safety
USER GUIDE SAFETY The general safety section contains instructions related to all safety routines. Important: Instructions pertaining to certain specific subjects (for example, assembly-related safety) can be found in the respective section. Always read all the instructions, not only the summary of safety practices, before commencing any operations with the equipment. -
Page 7: General Safety Instructions
USER GUIDE 3.1. General safety instructions The safety-related warning sign marks important safety instructions on the product and in the manual. If you see this symbol, consider the possible risk of serious or fatal injury. Follow safety instructions. DANGER Indicates an imminent danger to life that may result in serious or fatal injuries unless avoided. -
Page 8: Important Safety Instructions For Dryer User
USER GUIDE 3.2. Important safety instructions for dryer user Mepu grain dryers have been designed to be as safe as possible However, depending on local conditions, installation, and equipment configuration, the user needs to consider some safety precautions when using or servicing the device. Risk of falling The grain dryer is high, and therefore you should move carefully on maintenance platforms and on ladders. - Page 9 USER GUIDE Additional lighting The drying season is at the end of summer, when evenings and nights are already dark. To ensure work safety make sure that there is enough lighting around the grain dryer. Risk of a traffic accident Grain is delivered to and from the grain dryer with large vehicles.
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Page 10: Fire Safety
USER GUIDE 3.3. Fire safety The most common safety risk associated with grain dryer is fire. In addition to significant property damage fire can cause personal injuries. These key measures help to reduce the risk of fire: 1. Make sure that air supplied into the heat source of the grain dryer is clean. Prevent debris from getting into the dryer air. -
Page 11: Basics Of Grain Drying
USER GUIDE BASICS OF GRAIN DRYING 4.1. Keeping quality of grain The keeping quality of grain depends mainly on two aspects: 1. Microbial processes. In order to live micro-organisms (e.g. fungi, bacteria and viruses) need nutrients, water and heat. 2. Grain’s enzyme activity and respiration. Grain is a living material even after it’s harvested. - Page 12 USER GUIDE Seed grain Bread grain Variety Max °C Max °C Sunflower Durra Peas Millet Oats Corn (yellow) Corn (white) Barley Rice Turnip rape Mustard Buckwheat Wheat Indicative grain temperatures +50…+60˚C Seed grain +60…+70˚C Bread grain …+110˚C Fodder grain Indicative drying air temperatures It is important to note that grain temperature and drying temperature are two different things.
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Page 13: Cooling
USER GUIDE If the moisture content in dried grain is high, there is the risk that the kernel structure is damaged, as the surface dries faster than the inside. In this case drying is often carried out as a multi-stage process, where grain humidity evens out between individual drying stages. It is advisable to reduce the moisture content by at most six percentage points during one drying stage. -
Page 14: Description Of The Grain Dryer Process
USER GUIDE DESCRIPTION OF THE GRAIN DRYER PROCESS The grain drying process can be carried out using one of the two different methods: batch drying and continuous flow drying. 5.1. Batch drying Batch drying is a method that is suited for smaller grain quantities, for varying varieties / qualities –... -
Page 15: Technical Specification
USER GUIDE TECHNICAL SPECIFICATION This section discusses the most commonly used parts and phases of the grain dryer. The content of the delivery varies by project, and therefore this section only contains a general description of the different parts of the grain dryer and their purpose. This section focuses on the functioning of the dryer machinery manufactured by Mepu. -
Page 16: Dryer Machinery
USER GUIDE 6.1. DRYER MACHINERY The dryer machinery is the part of the dryer where grain is mixed with air, i.e. is being dried. The dryer machinery can also be used for storage of grain, in which case it is necessary to pay particular attention to watertightness during the dryer’s assembly process. - Page 17 USER GUIDE Material and surface treatment The parts of the dryer machinery are mainly made of hot galvanized steel. 1. The thickness of the zinc coating of the steel sheet parts (sheet thickness 1-3mm) is 20 µm. The sheets are cut after galvanization, which means that there is less zinc around the cut edges.
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Page 18: Grain Storage
USER GUIDE 6.1.1. GRAIN STORAGE The main function is to keep the grain surface in the equipment at a sufficient level. During the drying process moist grain first swells a bit, and then starts to shrink, as the moisture content drops. If during the drying process the grain level in the grain storage drops below the top ridges of the drying cells, air starts flowing around the grain layer. -
Page 19: Feeding Apparatus
USER GUIDE 6.1.3. FEEDING APPARATUS The task of the feeding apparatus is to ensure smooth flow of grain, and to adjust the flowing rate in the equipment. The rotating feed rollers between the ridges of the feeding apparatus feed grain into the bottom cone very precisely and unformly. The grain flow rate can be modified by adjusting the rotating speed of the feed rollers with a frequency converter. - Page 20 USER GUIDE The variety of the grain, as well as its moisture and debris content affect the capacity of the feeding apparatus. When the grain dryer is being commissioned, it is advisable to monitor the functioning of the elevator, and to adjust the feeding apparatus capacity in order to prevent the clogging of the elevator.
- Page 21 USER GUIDE Cleaning The feeding apparatus is cleaned after the drying season or during the season, if required. Figure 6. Inspection of the feeding apparatus Check through the round hatches whether there is excessive debris or straw stock to the feed rollers.
- Page 22 USER GUIDE Figure 7. Maintenance points of the feeding apparatus (rollers drive unit side). Maintenance After the drying season: A. Check the tightness of the locking scews of the sprockets. If necessary, tighten with a 5mm allen wrench. B. Check the tightness of the elevator chain. Adjust the chain tightener, if necessary. If the tightrner is out of tightening margin, cut one of the chain links off.
- Page 23 USER GUIDE Figure 8. Maintenance points of the feeding apparatus (bottom hatches’ drive unit side). E. Lubricate the opening device. F. Check the condition of the bottom hatches through the bottom cone G. Check the condition of the feed rollers to detect any dirt or damage. If any of the feed rollers are damaged, it should be replaced immediately to ensure smooth feeding of grain.
- Page 24 USER GUIDE Replacement of feed roller Sprocket Bearing’s fastening nuts Bearing Protective plate of the bearing Shaft Feed roller Fastening of the roller to the shaft Figure 9. The feed roller can be replaced in two ways: 1. By pushing the roller out from the hole in the bearing. The length of the roller is two meters, and therefore there has to be enough room on the other side of the unit to perform the work.
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Page 25: Bottom Cone
USER GUIDE 2. By dropping the shaft into the bottom cone. a. Open the bottom hatches. b. Remove the chain and the sprocket. c. Loosen the fastening bolts of the shaft. d. Loosen the locking screws of the bearings. e. Tapping with a hammer and install the shaft into the roller. The roller drops into the bottom cone. -
Page 26: Air Intake And Exhaust Casings
USER GUIDE 6.1.5. AIR INTAKE AND EXHAUST CASINGS The task of the air casings is to lead hot air from the heat source into the drying cell, and to lead the damp air from the exhaust side of the drying cell into the environment. When the equipment is being filled, some kernels can end up in the air casings. -
Page 27: Air Casing Adjustment Shutter
USER GUIDE 6.1.6. AIR CASING ADJUSTMENT SHUTTER A part of the air casing can be closed off with a shutter. There can be two reasons for closing off the air casing. 1. When the batch does not fill the machinery completely (partial batch drying) you can close off the upper drying cells. -
Page 28: Base
USER GUIDE 2. Electrically operated air casing adjustment shutter: Controlled from the control panel of the grain dryer. Figure 13. Air casing adjustment shutter (electrical). 6.2. BASE The dryer machinery needs to be installed in a sufficiently strong and level foundation. Local conditions, such as wind, snow load and earthquakes, as well as local regulations need to be taken into consideration when determining the foundation. -
Page 29: Conveyors
USER GUIDE 6.3.2. CONVEYORS Grain can also be loaded into and unloaded from the dryer with conveyors, in which case the height of the equipment and the elevator is low. Manuals for conveyors are supplied separately Risk of being crushed. Always turn off main power of the grain dryer before starting any maintenance procedures. -
Page 30: Air Ducts
USER GUIDE 6.7. AIR DUCTS Air ducts deliver hot air from the furnace into the intake channel of the dryer machinery and possibly lead moist air from the exhaust channel outside the dryer. The content of the delivery set depends on the furnace type and the installation place. The following should be taken into consideration when designing the ducts: The channels and, in particular, the elbows create counter-pressure. -
Page 31: Elevator
USER GUIDE 6.11. ELEVATOR The elevator lifts the grain into the grain bin and / or the unloading location. Generally, Mepu dryers are delivered with a Skandia bucket elevator. Manual for the elevator is delivered separately. Risk of being crushed. Always turn off main power of the grain dryer before starting any maintenance procedures. -
Page 32: Commissioning
USER GUIDE COMMISSIONING Before commissioning the grain dryer it is necessary to perform the following: What Task Assembly of the Check the parts Check that all the parts of the dryer machinery dryer machinery of the dryer have been assembled according to the machinery assembly instructions. -
Page 33: Maintenance During The Drying Season
USER GUIDE MAINTENANCE DURING THE DRYING SEASON Before starting any maintenance procedures turn off main power. What Task When Heat source Check / Open the maintenance Regularly. clean hatches and remove When drying oil crops – RISK OF FIRE possible debris. after every batch or in Check for fuel leaks. -
Page 34: Maintenance After The Drying Season
USER GUIDE MAINTENANCE AFTER THE DRYING SEASON Before starting any maintenance procedures turn off main power. What Task Cleaning of the Remove debris Open the bottom hatches of the feeding dryer machinery and any grain apparatus. Keep them open when the dryer is possibly left in not being used. -
Page 35: Troubleshooting
USER GUIDE 10. TROUBLESHOOTING Before starting any maintenance procedures turn off main power. Problem Possible cause Remedy There is some The feed Check the chains. grain left in the roller(s) is (are) Check the fastening of the sprockets to the roller machine not rotating shaft. - Page 36 USER GUIDE The level guard Check the functioning of the level guard. Clean the probe of the sensor malfunctioning. The channels at Recommended channel sizes: the unloading 60ton/h -> 200mm side are too 80-120ton/h -> 250mm narrow. Check the channel angles. The recommended vertical angle for moist grain is 45 degrees.
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Page 37: Drying Of Different Grain Varieties
USER GUIDE 11. DRYING OF DIFFERENT GRAIN VARIETIES Different grain varieties require drying methods. Based on testing and experience it is possible to find the settings and the drying methods, which are the best suited for the local conditions and varieties. Below you can find indicative information, which you can use as the basis for your search for the optimum drying method. -
Page 38: Ec Declaration Of Conformity Of The Machinery
USER GUIDE 12. EC DECLARATION OF CONFORMITY OF THE MACHINERY ID: D16694_EN... - Page 39 USER GUIDE ID: D16694_EN...
- Page 40 USER GUIDE Mepu Oy Service: Tel. (02) 275 4482 E-mail: service@mepu.com Mepu Oy, Mynämäentie 59, 21900 Yläne www.mepu.com ID: D16694_EN...
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