The skimmer sits at the waterline and catches leaves, bugs and trash so they do not clog the filter.

A floating weir raises and lowers its level to match the water level in a pool or spa. With this in mind, a weir for a swimming pool is a barrier in a skimmer over which water flows. What is a pool weir?Ī weir is a type of barrier across a river that is created to adjust or alter its flow. Above ground pool skimmers have a faceplate and gaskets to seal up to both sides of the pool wall. The most common pool skimmer parts include skimmer baskets, skimmer cover, and the skimmer weir flap over which water flows. If that doesn’t work, try holding on the handle that is on the left with your left hand and with the palm of your right hand, try tapping or thumping the other side of the lid to crack the seal (no break it). Try holding firming to the handles or the plastic parts of the lid, and give the lid a good twist clockwise.

The hinge opening will face the skimmer, so you would install (if your are inside the pool) through the water inlet and press the flap into position (pushing towards the skimmer basket). The weir has a dual function of preventing excessively debris from clogging the skimmer and acts is a backflow control preventing water from escaping the skimmer compartment once it enters. The weir (aka flapper) has a few functions: 1) it allows for debris floating on the surface to be removed from the pool more easily than without it, 2) it keeps that debris in the skimmer basket area when the pump shuts off, and 3) it prevents gulps of air from entering the pump and filter system while people are in … What is a skimmer weir door?Ī skimmer’s door is the flap door on the front of your skimmer.

How to install skimmer weir flap