A typical washing machine drain pump consists of a electric motor, a cooling fan on one end of motor shaft and a water impeller on the other end. The water impeller has 2 short tubes for connecting the hoses. The inlet is over the centre of the impeller and the outlet on the side at right angles to the motor shaft. Attach a 13mm. garden hose to the pump inlet and one to the pump outlet using hose clamps, adaptors, silicon sealer or whatever. Pump outlet has more pressure than inlet.
Some pumps are DANGEROUS as they have a short duty
cycle these are usually from automatic washers and can only be used for
5 minutes then not used again for 1 hour. A short duty cycle pump may burn
out or CATCH FIRE if left on for too long. Test your pump by pumping water
for 5, 10, 20, 60 minutes, at the end of each test disconnect the power
supply from the pump and CAREFULLY feel the temperature of motor winding
coil. You should be able bear the temperature for some time, CAUTION a
pump with a very short duty cycle may be very hot after 5 minutes and the
power must be disconnected before touching the pump.