Open the dryer door and pull out the drawer-like compartment at the bottom of the dryer. Flip open the cap, empty the collected water, close the cap and slide it back into the machine.
Sue Denim
December 2009
If its a washing machine, which I presume it is, move the washer to the outside door, or a bucket. Lower the drain hose to ground level and the water will flow out. This will then release the pressure switch and allow you to open the door.