JK0
12-09-2011, 16:22 PM
When I moved into my present house six years ago, I had to install new drain connections for my washer dryer which is in my utility room.
The drain hose of my machine fits into a standpipe. This connects to a short length of 40mm pipe going through the wall, then into a 90 degree bend. From there there is a 90" length of pipe which drops around 6" until it joins a T-piece on the waste pipe connected to another standpipe in the kitchen. This ends about 3" above a gulley grid.
This has worked perfectly up to now. However, last night I noticed some spare underwear I kept in the cupboard next to the machine was going mouldy. At first I thought the hose had slipped out of the standpipe, so I pushed it back in.
This morning I found that the outside of the standpipe was wet after the spin cycle. Thinking there must be a blockage, I took apart the pipes and found barely anything.
I am stumped. Have I used too steep an angle for the 90" pipe? (I read somewhere it needs to be 1/4" per foot, but mine is about 3/4" per foot.)
The drain hose of my machine fits into a standpipe. This connects to a short length of 40mm pipe going through the wall, then into a 90 degree bend. From there there is a 90" length of pipe which drops around 6" until it joins a T-piece on the waste pipe connected to another standpipe in the kitchen. This ends about 3" above a gulley grid.
This has worked perfectly up to now. However, last night I noticed some spare underwear I kept in the cupboard next to the machine was going mouldy. At first I thought the hose had slipped out of the standpipe, so I pushed it back in.
This morning I found that the outside of the standpipe was wet after the spin cycle. Thinking there must be a blockage, I took apart the pipes and found barely anything.
I am stumped. Have I used too steep an angle for the 90" pipe? (I read somewhere it needs to be 1/4" per foot, but mine is about 3/4" per foot.)