How to change: Heater fan
How to change the heater fan on your ROEST.
Where to buy heater fan?
If you are sure your heater fan is broken (you have talked to our Support Team) visit our e-shop to purchase a new one!
Before you start
⚠️DISCLAIMER
Information in this document is believed to be accurate and reliable. However, the manufacturer does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of the use of such information. The manufacturer is not liable or responsible for any problems arising from the attempted repair. The manufacturer reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. The manufacturer's products are not designed, authorized, or warranted to be suitable for use in applications where failure or malfunction can reasonably be expected to result in personal injury, death, or severe property or environmental damage. The manufacturer accepts no liability for inclusion and/or use of its products in such equipment or applications and therefore such inclusion and/or use is for the customer’s own risk.
⚠️SAFETY INSTRUCTIONS
make sure the roaster is turned off
the power cord has to be unplugged
follow the steps as instructed below
Tools
2.5-millimeter hexagonal key (L or T-shaped)
3-millimeter hexagonal key (T-shaped, long)
Stanley knife
Plastic gloves
Parts
NOTE: PCB reads “HeatFan2”
Disconnect the drum and inlet temperature sensor. This procedure is the same for both sensors.
Note how the wires are inserted into the screw terminal, the yellow wire is positive, and the red wire is negative.
Make sure you open the hole up, as done on the right terminal. The left terminal is in the incorrect position.
Pull the cable through the holes in the heater fan.
Remove the cable completely from the heater fan.
5. Disconnect heating element cables from wago connectors and cut the cable ties. NOTE: Before disconnecting, take a photo or make a reference to ensure that the correct cable goes into the correct wago connector when reconnecting.
Cut the cable ties holding the cables from the heater fan in place. If you have extra, note how the cables are tied, so you can tie them up again when finished.
Only open the two flaps that read Wago 221.
6. Remove the heating system.
Undo the two bolts for the heating element.
Remove the heating element.
Undo one bolt loosely (don’t remove) on the inside of the heating element housing.
Undo two bolts loosely on the outside of the heating element housing, but don’t remove them. You can remove the orange hose to see better.
If you look inside the housing, it should look like this.
Pull the housing backward, so it slides away from the bolts holding it.
Pull the heating element housing with the heater fan upwards.
What it should look like after you pulled the housing off.
7. Install the new heater fan onto the old heating element housing.
The heating system you removed from the roaster should look like this.
Undo these two screws using a 2.5-millimeter hexagonal key. Hold a finger or on the back to keep the screw from spinning.
Use a spanner to hold the nut in place.
Use the spanner on the nut while undoing the screw from the other side.
Save your screws and nuts from the old heater fan; you will need them for the new one.
Cut the silicone on all sides where the fan and housing meet.
Pull the fan and housing apart.
Your old heater fan should be separated from the heating element housing at this point.
Find your new heater fan.
The orientation of the heater fan in relation to the heating element housing should be as shown in the photo above. There is a slot in the heater fan where the housing can be inserted.
Slide the housing inside the heater fan.
Insert the screws you removed from the old fan.
Turn your fan around (watch the screws so they don’t fall out).
Place the washers.
Place the nuts.
Find your spanner again to tighten the nuts.
Tighten the screws.
You need to use both your spanner and hexagonal key simultaneously.
You will need some silicone. We should provide it if you purchased a heater fan in our webshop.
You will need plastic gloves as well. Cut a hole at the tip of the bag to make a piping bag.
Use the piping bag to add silicone where the heater fan meets the heating element housing.
Add silicone to all sides.
Smear it out with your finger, removing excess silicone.
Make sure the area around the heating element stays clean.
8. Wait 24 hours for the silicone to dry.
9. Install the new heater fan system onto the roaster.
Slide the heating system onto the inlet housing.
Then push the heating system into place.
When your system has slid into place, it will look like this inside. If your mica tube is in the way, you can remove it.
Tighten the bolt inside and the two bolts on the outside. Install the mica tube if you removed it.
10. Install the heating element and connect it to the correct wago connectors (look at the image at the beginning of the guide for reference). Use a 2.5-millimeter hexagonal key to tighten the bolts.
Note the orientation of the heating element. The red rubber component should be closer to the PCB.
11. Install the drum and inlet temperature sensors if you have them:
Pull the cable through the bottom hole.
And then pull it through the top hole again.
Pull it through all the way, but not too tightly.
Make a note of the colors of the wires: Yellow is positive, and red is negative.
Make a note of the orientation on the terminal. Ensure the yellow wire goes into the positive terminal and the red wire goes into the negative terminal.
Ensure the cable is not in the way or hanging too loosely in the machine.
Do the same for the inlet temperature; insert it into the left screw terminal instead.
12. Connect the heater fan to the PCB (refer to the beginning of this guide if you are unsure of where).
13. Install back the front décor plate. Instructions here.
14. Install back the side panels. Find instructions here.
15. Install back the top plate following this guide.
16. Plug the roaster in, turn it on and test the heater fan. If it doesn’t work, contact the ROEST support team.
