Friday, May 13, 2016

Hoover Condenser Tumble Dryer model VHC 391

Tumble Dryer Repairs in Port Elizabeth

We recently had the honor to service a Hoover tumble dryer mode VHC 391. I can actually count on one hand the times we had this specific model in our workshop. This Dryer was build in the true Hoover Superior tradition and it has so many unique feature which will take forever to tell you about them.

The Condenser Dryer

Hoover Condenser Tumble Dryer modelVHC 391

Condenser Dryers keep the wetness/condensation inside the dryer and it has a unique drip-tray where the water accumulates. Just to explain what this means, in our part of world (Eastern Cape) if you use a normal tumble dryer the water evaporates into the air which is all fine on normal days
The snag comes in when you live in a small apartment or the machine is kept in a small laundry room. On a humid days combined with the evaporated water from the drier results that wetness moves into already dryer garments.

This dampness which you don't think is now on your garment and it will make your clothes start to smell moldy.  
Most of the time you don't even pick it up straight away, its only when your body starts heating up from around about 10 - 11 in the mornings. This also the time when most people tend to blame their Washing Machines or detergent.

Hoover Condenser Tumble Dryer model VHC 391 front door switch and inner drum expouse
We can go more into how important it is to keep the environment around your tumble dryer clean at all times because when taking dried out garments out of the dryer it will suck-in moister from the immediate surrounding straightaway. If the kitchen dustbin or smelly dirty garments are lying nearby the newly dried garment it will get some of those smells in newly dryed garments. I will discuss this drying process more in a another post

The actual reason why I did this post is to show (pictures) you the reason why it is so important to have your tumble dryer serviced or cleaned regularly. Autumn is here and winter is the time when you use tumble dryers the most and you don,t need a breakdown when you need it the most.

Hoover Condenser Tumble Dryer model VHC 391 Front covered with fluff

Fluff

Fluff is the number one reason why tumble drier fail
  • Fluff blocks the flow of hot-air inside the tumble drier which results that instead of the Hot air move through the garments and to the outside, it now lingers inside the dryer unit causing the motor and timer (programer) to overheat.
  • When the tumble-dryer airflow are restricted it takes much longer to dry Garments resulting in using more electricity.

Hoover Condenser Tumble Dryer model VHC 391 Motor is completely covered with fluff
When the motor is covered with fluff the operating temperature rises by two or more degrees causing the motor fail.

One of the most common symptom of a failing motor is that it does not startup (turn) on its own. You hear this humming noise and the drum heats up but nothing is turning.

When you swing the motor with your hand it works fine again - THe reason for this is that the start winding is damaged but the run-windings are still fine.
Hoover Condenser Tumble Dryer model VHC 391 Motor
Motor windings

Windings are the copper wire coils around the motor armature - in which the electric current flows. The electricity in these copper coils creates a north and south pole (like in a magnet). Once the motor overheats the insulation between the copper coils melt and it starts to lose their poles.

In Tumble Dryer and Washing Machine motors there are more than one set of windings. The following sets are found;
  • Left Start winding
  • Right start winding
  • Left run
  • Right run
Most of the time it is only one set of windings that get damage resulting that the Appliance still has some limited functions


Hoover Condenser Tumble Dryer model VHC 391 Before and After Servicing

Sadly I must report Hoover has gone by the wayside and backup service are limited. I can't help but wonder how such a super manufacture of legendary vacuum cleaners and household appliance just faded away. 

If you have more information about this please share it with us
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Ps. The only cost effective condenser tumble dryer is the same class as this hoover model are the Whirlpool which also has a very big inner drum.




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