Thread Number: 49980
Maytag TL HE " the tumble kind"
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Post# 721729   12/17/2013 at 23:05 (3,771 days old) by alr2903 (TN)        

T/L He Tag

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Post# 721902 , Reply# 1   12/18/2013 at 20:29 (3,770 days old) by washdaddy (Baltimore)        

These washers were kind of dropped out of the limelight shortly after they were introduced. I've heard that these are sometimes prone to issues. With the two tumblers being in the sides of the tub and the tub having the ability to spin I can imagine the tranny in these were somewhat complex.

Does anyone on here have an history with this machines?


Post# 721945 , Reply# 2   12/19/2013 at 04:21 (3,770 days old) by alr2903 (TN)        

Washdaddy, this particular Maytag was the last new design by our friends in Newton Iowa, IIRC very close to the end before Whirlpool took over. Are you familiar with the "Search-O-lator" function here on AW.org? It should provide you with multiple threads about this very innovative Maytag. It will become a collectors item soon, if not already. I think you would enjoy all the archived posts. Our webmaster has them arranged by year. When I first joined AW.org, I went thru all the old posts to learn the basic acronyms, HOH= Halo of Heat for example. It took a long time to read all the old posts from the group and that was years ago. Happy Holidays to you!
alr


Post# 721963 , Reply# 3   12/19/2013 at 08:16 (3,770 days old) by DADoES (TX, U.S. of A.)        

dadoes's profile picture
 
The drive mechanism isn't as complex as may be expected.

A few details that may be unexpected:

1) Incoming water fill is channeled through the lid via spray jets and capture flumes on the rear edge.  The lid cannot be open during fill.  Bleach and softener cups are at the front corners of the top deck, part of the fill flow diverts through side channels in the lid at appropriate times (first rinse, final rinse) to flush the cups.  The detergent dispenser is a double-cavity gizmo (left side liquid, right side powder) that mounts to the underside of the lid.

2)  The tumblers (clothes lifters) rotate in one direction, they do not reverse during washing and rinsing.  They do reverse for a partial-turn at the beginning of spin to center the load in the drum from having climbed up the side as happens during tumbling.

3)  The lid locks through the entire cycle and tricking it is difficult.  There are locking pins on both sides near the front corners.  A magnetic sensor is on the left side, a magnet must be placed in the correct position at left side of the top beside the lid bumper.  Both locking pins are spring-loaded.  The right-side locking pin must be held extended just past the "balance point" of the spring (as if the lid is properly closed) to trick the mechanism ... it won't work if the pin is fully extended.  Easiest work-around is remove the top clips so the top can be raised, which also allows the lid to remain closed for filling.

4)  There's no brake.  The spin drum is heavy with a lot of inertia, takes a long time to coast to a stop.

5)  It can sense if the hot/cold supply hoses are connected in reverse, electrically reverses the water valves to compensate.

6)  The balance-sensing routine tries several times to distribute the load, then refills/tumbles if necessary.  IIRC it does the full routine twice if necessary, which is six or eight spin attempts, then signals an unbalanced load fault and unlocks for attention.  A accelerometer (shock detector) on the control board detects if the drum impacts the cabinet during any spin attempt and maximum speed is limited to 500 RPM in that case.

7)  There are two fill levels.  The lower level is for the wash phase and 1st rinse (also the 2nd rinse if extra rinse [3 rinses] is selected).  The higher level is used for the Bulky cycle and the final rinse on all cycles.

8)  Distribution spin / balance sensing starts before the water drains.  It neutral-drains first to the lower level if the higher level is in play.


Post# 722118 , Reply# 4   12/20/2013 at 01:30 (3,769 days old) by alr2903 (TN)        

Glen, you brought up an interesting point in another thread, IIRC it was a F/L thread about the stator producing electricity to continue power to the door lock in the event of a power outage. Would this Maytag have the same system since it has no spin brake? It is a interesting safety situation/ solution, that I had not thought of.
alr


Post# 722125 , Reply# 5   12/20/2013 at 03:04 (3,769 days old) by redcarpetdrew (Fairfield, CA)        
If only 'twas that simple...

redcarpetdrew's profile picture
The lid lock system needs power to lock and unlock. If you have a power outage (or a brain dead motherboard for that matter...) the locks will not cycle. Normally, the motor control reads tach signal and will not send feedback to the main control allowing the lid locks to cycle until it sees zero status or no rpm indicative of a revolving drum having come to a stop.

This is illustrated by the Neptune FL with the solenoid actuated door lock such as the MAH55,65&7500 machines. Say mid cycle, the motor control board dies with the door locked. The machine control tries to talk to the now dead motor board to see if it's ok to unlock the door. Since the lower board is not reporting tach signal AND cannot send the signal actually verifying zero rpm (two actually separate processes...), the door stays locked even though the tub has long stopped spinning. Eventually, after 15, 20 or more minutes, the machine control might finally send a unlock signal (timing out?).

RCD



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