04 December 2020
Frigidaire FDB125RHS0 Dishwasher

The dishwasher frequently leaves a fine grain residue at the base of the upside-down cups on the top rack. I questioned if the impeller was wearing out such that sufficient water pressure was not clearing the cups of residue. It's time to pull the unit for inspection...

In the end, I did add sealant to the pump assembly so that high pressure water can't leak from the pump assembly (leaving more water flow for washing dishes). This did not resolve the issue. Knowing that the unit was "as designed" I looked at different detergents and rinse agents. Online research typically follows comments that the dishwasher needs to be cleaned - NOT - though the "dishwasher cleaner" does a nice job to "whiten" the interior a bit.

In the end, the most productive answer to the issue is to use a rinse agent. On a rare occasion a slight bit of residue can be experienced. While the rinse agent bottle can be a bit costly, the amount could readily last a year or more - thus the cost per wash is trivial.

White Consolidated / Frigidaire FDB125RHS0 Dishwasher

The base pan with the top half of the pump assembly removed for easy impeller inspection - it looks as it was designed.

I added some RTV sealant to the high pressure mating surfaces of the pump output. Tests showed no improvement to the sediment issue (and then I went to try different detergents and rinse agent).

Pump output assembled

General photos

Heating element power connections

Supply water valve

Motor power

Discharge water

Assorted detergents and rinse agent. It makes little difference as to detergent as the rinse agent looks to have resolved the issue. A dish pack might be tossed in for the first wash with Cascade powder or LemiShine added to the second wash bin.