Is a 1 1 2 inch pipe too small to small to properly drain an older washing machine.
Washing machine wall drain.
The correct way to drain a washing machine is to install a standpipe.
Efield washing machine outlet box with center drain with brass 1 4 turn valves installed 1 2 pex f1807 crimp x 3 4 mht connection white 4 5 out of 5 stars 13 23 99 23.
All components of a washing machine drain should be installed before the wall and floor finishes are applied.
The washing machine drain box is hooked up to the houses waste piping that contains a p trap inside the wall or exposed in older homes.
The waste water fills the trap below and creates a seal that prevents the sewer smell gasses.
As a washing machine runs through its cycles it pumps out dirty water to make room for the clean water it needs to rinse your clothes.
To clear a clog from a washing machine try unhooking the drain pipe and pouring hot water down the drain to release the soap and scum.
The box is made with high impact polystyrene for extra durability.
How a washing machine works.
As it goes down turn the handle clockwise anytime you feel a clog which will grab the debris and allow you to pull it out.
With this set up waste water comes out of the plastic washing machine hose and empties into the drain box pipe.
That is a vertical length of pipe that connects to a p trap that in turn connects to the drain.
Washing machine drains must be able to handle strong currents of water as modern machines have powerful pumps for efficient cleaning.
I assume what you mean is that the drainpipe coming out of the washing machine is going into a 1 1 2 inch pipe in the wall.
It pumps the dirty water through a rear mounted outlet tube fitted with a flexible discharge hose.
For stubborn clogs push a plumbing snake down the drain.