Heat Problem in a SQ Single

[dougyg]

I have a SQ single 30XG that has been giving me problems by getting to hot. I tested the machine and the temperature was around 160 and I had my attendent dry some clothes. The dryer got so hot that it burned the towels. I did some further testing and this is what I found out.

The dryer goes to 160 and gas shuts off and flame restarts at ~150. Temp goes to 165 shuts off and restarts at ~155
Temp goes to ~175 shuts off and restarts at ~165
Temp goes to ~180 shuts of and restarts at ~170
I stopped the dryer when it hit 185 since I knew I had a problem.

I am about to change the thermostat but before I do this I wanted some opinions on possible other solutions.

[MSKLAUNDRY.]

Change the thermostat, like you said.

[Ronald]

All my dryers are set at 180 and 190 with 2 min. cool down never had a problem with burning anything..

[Winston]

I think the difference is where the temperature is measured. Non-digital dryers are measured in the stack... should be about 160 degrees. Digital dryers are set for temperatures inside the drum. I believe 180 -190 is about the same as a stack temp of 160.

[pete f]

I have a SQ single 30XG that has been giving me problems by getting to hot. I tested the machine and the temperature was around 160 and I had my attendant dry some clothes. The dryer got so hot that it burned the towels. I did some further testing and this is what I found out.

The dryer goes to 160 and gas shuts off and flame restarts at ~150. Temp goes to 165 shuts off and restarts at ~155
Temp goes to ~175 shuts off and restarts at ~165
Temp goes to ~180 shuts of and restarts at ~170
I stopped the dryer when it hit 185 since I knew I had a problem.

I am about to change the thermostat but before I do this I wanted some opinions on possible other solutions.


It is a somewhat common problem, not a big job. change the thermostat before some one really burns their clothes.

Not to underestimate your cleaning, but is the "bulb" ( sensor thermostat thing) in the lint area under the drum clean? If it gets lint build up the sensor can not act right.

[dougyg]

I now have a similar problem on another dryer. I just recieved the new thermostats so have not had time to install on the original dryer On the second dryer I replaced the thermostat and this did not solve the problem. Gas comes on for a short while and then shuts off, then restarts and shuts off. The temperature in the stack stays around 130-140 but since there is no cool down the drum gets very very hot. Any other suggestions?

As a side question what controls tehecool down cycle?

[MSKLAUNDRY.]

On computer models the computer sets the cool down time. On rotary timer models the "b" switch.

[dougyg]

Where would I look for the "b" switch?

[MSKLAUNDRY.]

On the rotary coin mech if a coin drop non computer model. If the dryer has a coin slide then on the coin accumulator.

[dougyg]

Thanks for all the help. The problem turned out to be an airflow issue. The lint screen appeared to be somewhat clean but in actuality the mesh was clogged up with a waxy residue, I would assume from the dryer sheets people use. Also the lint screens were not original (bad quality) so I replaced them with better quality ones. Everything works fine now.

[BWJR]

Doug,

Invest in the best Mfg lint screen you can. Do not buy the ones for $1.00 or $2.00. They clog easy and can be a fire hazard. The big culprit for lint screens is the bounce sheet or whatever brand. The softner in the sheet gums up the lint screen over time. Air-flow as you now know is a very big part in drying clothes.

BWJR