Suds-Saver Operation on A MT VS WP-KM Washer
The WP-KM SS is more automatic and more sophisticated in its operation.
The MT system when set for suds return the timer never moves, it just turns on the motor in the agitate direction and the two-way solenoid is energized, if you forget the washer when returning the suds water it will run all day, and if the holding tub has too much water in it [ unlikely ] the washer will quickly return all the water and over flow. After the water is returned you must reset the timer to a wash cycle. Because a MT washer spins as it drains any grit and sand will be saved in the suds tub, most of the sand and grit will go out as the washer starts to drain. It really does not make much difference because the sand and grit will just sit in the bottom of the suds storage tub anyway, but it does leave a bigger mess to clean up.
On the WP-KM system the timer will advance into the normal wash cycle after the water is returned, so you can be adding clothing as the water returns [ since the washer would return water and agitate with the lid open] and throw in a little more detergent and walk away. The water level control is also wired to turn off the two way valve when the WLS is satisfied. WP-KM generally did not use a [ suds-save suds-drain ] switch on their washers as it was completely unnecessary, if you didn't want to save the wash water you simply left the drain plug out of the drain and the wash water simply went down the drain. The WP-KM since they did a neutral drain the sand and grit tended to sit in the outer tub till the TWV turned off and the washer started to spin and spray rinse the S&G away.
After you returned wash water to a MT you still had to remove the drain plug and rinse out the sink anyway, if I were using the MT even if I did not want to save the water I would leave the switch on save and just take the drain plug out so the used wash water would rinse some of the accumulated sand and grit down the drain.
John L.
The WP-KM SS is more automatic and more sophisticated in its operation.
The MT system when set for suds return the timer never moves, it just turns on the motor in the agitate direction and the two-way solenoid is energized, if you forget the washer when returning the suds water it will run all day, and if the holding tub has too much water in it [ unlikely ] the washer will quickly return all the water and over flow. After the water is returned you must reset the timer to a wash cycle. Because a MT washer spins as it drains any grit and sand will be saved in the suds tub, most of the sand and grit will go out as the washer starts to drain. It really does not make much difference because the sand and grit will just sit in the bottom of the suds storage tub anyway, but it does leave a bigger mess to clean up.
On the WP-KM system the timer will advance into the normal wash cycle after the water is returned, so you can be adding clothing as the water returns [ since the washer would return water and agitate with the lid open] and throw in a little more detergent and walk away. The water level control is also wired to turn off the two way valve when the WLS is satisfied. WP-KM generally did not use a [ suds-save suds-drain ] switch on their washers as it was completely unnecessary, if you didn't want to save the wash water you simply left the drain plug out of the drain and the wash water simply went down the drain. The WP-KM since they did a neutral drain the sand and grit tended to sit in the outer tub till the TWV turned off and the washer started to spin and spray rinse the S&G away.
After you returned wash water to a MT you still had to remove the drain plug and rinse out the sink anyway, if I were using the MT even if I did not want to save the water I would leave the switch on save and just take the drain plug out so the used wash water would rinse some of the accumulated sand and grit down the drain.
John L.