Wiesenfield pellet machine WIE-PM-2500 – how to use it properly?

A pellet machine (also known as a pelletiser) is used to produce pellets. The pellets are usually  produced from wood, straw or sawdust and pressed under high pressure. You can use them as fuel for your pellet furnace or as animal feed. From our article, you will learn how to properly service and operate the Wiesenfield WIE-PM-2500 pellet making machine.

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By Alicja Woźniak

August 10, 2022

6 min read

A pellet machine (also known as a pelletiser) is used to produce pellets. The pellets are usually  produced from wood, straw or sawdust and pressed under high pressure. You can use them as fuel for your pellet furnace or as animal feed. From our article, you will learn how to properly service and operate the Wiesenfield WIE-PM-2500 pellet making machine.

How does a pellet machine work?

A pelletiser converts biomass, such as sawdust, into pellets in an efficient manner. Once the feedstock is poured into the hopper, it is compressed by a die inside the machine. The process takes place at a high pressure and a temperature of 60 to 80°C, which ensures an optimal pellet consistency. Its size depends on the die used. The diameter of its holes translates into the size of the pellets obtained.

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How to use the Wiesenfield WIE-PM-2500 pelletiser

Pelletiser Wiesenfield WIE-PM-2500 – machine overview

ATTENTION: This article is intended as a guide to facilitate the use of the device. Before you start working, be sure to read the manual and the safety instructions contained in it!

Take a close look at all the components that make up the pellet making machine:

1. Hopper
2. Tractor hitch mount
3. PTO drive shaft
4. Tractor hitch opening
5. Frame
6. Gearbox
7. Chute
8. Upper casing

Pellet making machine Wiesenfield WIE-PM-2500 – assembly of the device

Once you have unpacked your pellet machine, follow the steps below:

1. Attach the net to the hopper.
2. Place the hopper on the machine casing and screw in place.
3. Screw the chute on as well.
4. Screw one end of the drive shaft to the machine.
5. To connect the machine to the tractor, place the catches in the holes (4).
6. Use the catches and the handle (2) to attach the machine.
7. Connect the other end of the drive shaft to the tractor.

How do I prepare the Wiesenfield WIE-PM-2500 for operation?

1. Place the pelletizer in a safe, clean, stable place (away from heat and water) to ensure airflow.
2. Check that all screws and bolts are tight.
3. Disassemble the rollers and remove the bearings.
4. Grease the bearings and assemble the rollers.
5. Press in the grease using the supplied grease gun. Place the end of the grease gun in the grease injection hole.
6. Remember to lubricate the bearings with grease intended for this purpose.
7. Repeat this operation after every 8 hours of operation of the pellet machine.
8. Adjust the rollers to ensure free movement of the die.

How do I grind the die before first use?

Remember to prepare the machine correctly before grinding the die (see above)!

1. To grind a new die you need:
   • 5 kg of sawdust (sawdust or flour),
   • 1.5 l of vegetable oil (can be used or dirty),
   • 5 kg of fine sand (optional).
2. Start the tractor to which the drive shaft of the machine is attached. The die will start to rotate.
3. Place the granular container under the chute.
4. Mix all the ingredients in the bucket until a smooth consistency is achieved. Run it through the die 80-90 times until the granulate meets the quality requirements.

How to start the Wiesenfield WIE-PM-2500 pellet machine – operating guide

Once you have the device ready to go and the die grinded, you can proceed. Take the following steps one at a time:

1. Prepare the mixture for pellet making – the maximum length of raw material should be about 5 mm.
2. Start the tractor to which the drive shaft of the machine is attached. The die will start to rotate.
3. Place the pellet container under the chute.
4. Pour a small amount of the mixture to be granulated into the hopper. If you throw in too large a portion at once, the die may clog.
5. Follow the same procedure until the prepared mix has been completely processed.
6. When you have finished working, switch off the machine by stopping the tractor.
7. Remember not to stop the machine while the pellets are being pressed (except for an emergency stop)! The machine may clog.
8. Clean the machine so that no pellets are left on the rollers or in the die.
9. Bear in mind that the pellets will reach the correct consistency only after they have cooled down.

Servicing the Wiesenfield WIE-PM-2500 step by step

Always ensure that the pelletiser is not connected to the drive before carrying out maintenance.

Replacement/disassembly of the die

1. Switch off the tractor to stop the drive shaft of the machine. Disconnect the drive shaft from the tractor.
2. Unscrew the hopper and remove it from the casing.
3. Remove the screws adjusting the pressure between the die and the rollers and the screws securing the upper casing. Pull out the rollers.
4. You can use a drill to pre-push the holes in the die.
5. Clean up any remaining material.
6. Remove the retaining nut locking device.
7. Loosen the clamping nut using the spanner provided.
8. Once the clamping nut is removed, you will see the holes for securing the holder.
9. To remove the die, first screw the holder in with the two screws. Then slowly screw in screw 3, then the die will start to lift gently.
10. Pull out the die.
11. Clean the rollers of any remaining material.
12. Clean or replace the die with a new one – remember to use only non-corrosive cleaning agents.
13. Thoroughly dry components after each cleaning.
14. When assembling, repeat the previous steps in reverse order.

Roller and die lubrication

Lubricate rollers and die with bearing grease each time after 8 hours of operation.

1. Dismantle the hopper.
2. Remove and dismantle rollers.
3. Remove bearings.
4. Grease the bearings.
5. Twist rollers and install on die.
6. Insert and tighten screws.
7. Force grease into the die using the supplied grease gun.
8. Insert the tip of the grease gun into the grease injection hole.
9. Press on the handle of the grease gun to start the injection.

Oil change

Remember to change the oil after 60 hours of operation.

1. Place the container for used oil in a suitable place.
2. Loosen the screw (marked “b”).
3. Wait for the oil to drain.
4. Tighten screw “b”.
5. To pour fresh oil into the box, unscrew the oil filler marked “a”. Pour in the oil and then screw the filler cap on.
6. Measure the oil level and condition with the detachable dipstick.