Summary: Learn how to maintain a drain system, unblock a drain, and unblock an interceptor chamber.
Drain pipes run in straight lines, with inspection chambers at each pipe joint or gradient shift; an inspection chamber is covered by manhole cover. The most common system connects all waste water pipes and soil pipes at a single stack. However, in pre-war houses, you may find two separate pipe systems.
If sewage overflows from an inspection chamber or gully, or you can smell sewage, you will need to unblock a section of drain. You can hire drain rods and a variety of heads from most hire stores. If the smell persists or you notice any leaks, contact your local council.
After locating the correct chamber, insert a flexible drain rod fitted with a plunger head into the pipe in the direction of the suspected blockage.
Older houses often have an interceptor chamber before the main drain. If this is full, the blockage is usually located in the U-trap at the end of the open channel under the manhole cover.
An interceptor chamber.
Author: C J Mills Google+
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