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Hi and welcome to FixYa, I am Kelly.
If your dryer cabinet is feeling very wam to the touch and your clothes are not drying properly it is always caused by poor air flow problems.
Here are steps you should to attempt to get it working normally again:
1. Pull out the lint filter
a. Inspect the cavity where the lint filter was (use a flashlight). Make sure there is not lint build-up under the lint filter. Use a folded wire coat hanger and a vacuum with a crevice tool to remove any lin in this area.
b. Wash the lint filter with vinegar and water then soap and water. Fabric sheet particulate builds up on the lint filter. It will appear clean but can still be almost completely blocked.
2. Remove / dis-connect the vent duct from the back of the dryer.
a. Turn on the dryer briefly and check air-flow. The air-flow should push a relaxed hand gently away from the immediate area of the vent duct connection. If you do not have good air-flow here you must inspect the internal ducting of the dryer for restrictions. Use the folded wire hanger and a vacuum to remove any debris from the internal duct vent ducting.
3. Inspect the ducting from the rear of the dryer all the way through and OUTSIDE the home. The vent flapper outside the home is most often one of the primary reasons for poor airflow. Clear the lint from both sides of the metal flapper outside the home.
4. Lastly if after doing all of the above you still have poor air-flow the most likely failure is the blower wheel attached to the motor shaft. Either there is a problem with the fan blades or the center hub has failed allowing the blower wheel to spin on the end of the motor shaft.
A final comment... when you think you have the internal dryer ducting clean.. start over cleaning again for a 2nd cleaning. I cannot tell you how many times I have performed in-home service and the customer said they had done all of the above yet when I clean the same ducting I can fill a 5 gal SHOP-VAC 50% full with the lint they did not remove.
The problem could be in a few different places. Make sure that your dryer vent is not obstructed with lint or any other material. If it's clean then the problem is most likely in your air duct assembly. to clean this out do the following. Unplug the dryer. Pull the lower access panel off of the front of the dryer ( 2 screws ). Then remove the 2 bottom screws that are holding the front panel. Then remove the bulkhead ( 4 screws ). Be mindful that it supports the front part of the drum, and the drum might drop a little bit while you remove the bulkhead. Remove lint filter. Find a large compressor and blow out the air duct assembly. There will be lots of lint in there. Reassemble.
Lint build up inside the machine, or a clogged dryer vent duct. if it is the resettable type, disconnect your dryer vent, reset the limit switch, and try to run it. if it works with the ducting disconnected, clean your ducting, and make sure the flapper door on the outside of your house is working. If the limit trips even with the duct disconnected, make sure the air path and fan are clean and free of lint. sometimes lint will build up on the heater element and catch on fire near the limit switch. the heater banks are available as a complete assembly, with a new element and all limit switches and thermostats. they run about 75 dollars.
If your dryer is not drying like it once did or if you just have not
taken the time to give yourself a clean dryer in a long time then you
need to do that. At least once a year the dryer cleaning should take
place. Lint build up in the dryer duct is one of the main causes
for your dryer to fail.
Hi Paul and welcome to FixYa. I am Kelly. When you say velocity I am assuming we are talking about airflow and not the tumble speed. There are 2 things that cause poor air flow.
1. Lots of lint build up either inside the dryer or in the output vent ducting expecially at the outside thru the wall vent flapper.
2. The blower wheel on the drive motor has a damaged center hub and is spinning on the motor shaft vs driving at full speed.
Pull out the lint filter use a flashlight and look in the very bottom area of the lint filter air passage. This area is notorious for lint accumulation. If you note lint use a vacuum crevice tool and a wire coat hanger folded into a U shape to reach deep into the passages so that you can use the crevice tool to remove the lint.
The lint filter itself can cause restricted airflow. If you use dryer sheets (Fabric softener) these over time accumulate a mirco particulate on them that when you wipe off the lint it appears clean but the air passages are clogged with the dryer sheet material. Wash the lint filter with vinegar and water using a brush, then soap and water.
Next go outside and check the thru the wall exhaust of the dryer vent. Reach up inside the flapper and check both sides of the flapper for lint build up. Clean as needed.
Disconnect the vent ducting at the back of the dryer. Start the dryer. The airflow commig out the back should gently push a relaxed hand away from the exhaust hole. If the air flow is weak use a flash light and look deep into the vent ducting inside the dryer checking for lint build up. Clean thoroughly.
If after doing all of the above you still have weak airflow then the blower wheel area is suspect in the form of either a damaged blower wheel or lint build up at the blower housing exit.
Give it a good cleaning and see what happens. If you sitll have air flow problems there is more I can do to help you with pictures and how to dis-assemble the dryer. Just repsond here and I will gladly help you.
I recently solved this problem on my dryer by taking apart the lint collection area. Some dryers allow you to do this by removing a couple screws surrounding the lint screen holder. Others require some dis-assembly of the top and front panel. Once you have access behind or below the lint screen, use your hands or a strong vacuum (shop-vac) to clean out any collected lint that has fallen below the collection screen and settled in the exhaust duct. I pulled out about 100 cubic inches (~1.6 liters) of collected lint, cat hair, and debris that was obstructing air flow. Obstructed airflow can cause metal parts near the heating element to overheat and scorch clothing and is a serious fire hazard.
I recently solved this problem on my ELECTRIC dryer by taking apart the lint
collection area. Some dryers allow you to do this by removing a couple
screws surrounding the lint screen holder. Others require some
dis-assembly of the top and front panel.
Once you have access behind or below the lint screen, use your hands or a
strong vacuum (shop-vac) to clean out any collected lint that has
fallen below the collection screen and settled in the exhaust duct. I
pulled out about 100 cubic inches (~1.6 liters) of collected lint, cat
hair, and debris that was obstructing air flow.
Obstructed airflow can cause metal parts near the electric heating element to
overheat and scorch clothing and is a serious fire hazard. I expect similar problems can occur with gas dryers.
Remove lint screen. Remove bottom front kick panel (usually three to four screws on very bottom front), There is a metal lint filter air duct assembly that has three to four screws holding it on. Usually one on each upper side of the duct, and one that has a bent metal bracket holding the bottom to the blower housing. This metal duct is dead center in the dryer under the door and ducts over to the bottom left. Remove the screws and pull the duct down and out. You can now clean this assembly. Needless to say, always unglug the dryer or turn it off at the circuit breaker before doing this job. I recommend that you do this at least once a year on the dryer, and clean out the washer lint and coin catcher at least once a year. Good Luck, Appliance Specialists.
your best bet is to remove the front panel of the dryer and pull the front drum/blower duct assembly off the machine. You can then fully access all areas of the duct and also clean all the lint build up inside your dryer.
pull your dryer out from the wall and unplug then take of the back cover and looking at the back on the left once the cover is off there is a circular box that has a fan in it if you carfully remove that box it is probly full of lint.