Wascomat Junior W 75 Operating & Maintenance Manual

Also see for Giant W 185: Operating & maintenance manual

Contents

Wascomat Junior W 75 Operating & Maintenance Manual Manual pdf 26 page image

22Drive motorDescription in generalThe motor is mounted on an axle with rubberdampeners.The V-belt is tightened by turning the motor onthe axle and locking it in place using thetensioner on the rear side of the motor. Themotor and tensioner have vibration and noisedampening rubber suspensions.Construction in generalThe motor consists of stator, rotor and end-shields with ball-bearings. The stator and therotor consist of plates, insulated from each otherand welded together. The stator is provided withslots in which the 2-pole and 18-pole windingsare wound. The windings are impregnated with atemperature-resistant sound-insulating resinvarnish according to class B. The end-shields aredie-cast. The ball bearings are permanentlylubricated.Construction of single-phase motorSingle-phase motors have an 18-pole winding(wash-speed) the same as three-phase motors,using a continuously connected capacitor, whilethe 2-pole winding (extract-speed) is a speciallydesigned winding with both a continuouslyconnected capacitor and a starting capacitor.Function of 3-phase motorWhen the stator winding is charged, a magneticfield will occur, which in turn will rotate the rotorat a fixed RPM depending upon the number ofpoles in the winding. The 18-pole winding givesthe wash speed and the 2-pole winding theextract-speed. When operating with load, thespeed deviates slightly from the synchronous(no-load) speed. This difference is called the slipand is usually expressed as a percentage of thesyncronous speed. The motors will work satisfac-torily at nominal voltage +10%-15%.Function of single-phase motorWhen the stator winding is charged without acapacitor, two counteracting magnetic fields arecreated. When a capacitor is connected, it willdisplace one of the two magnetic fields adding itto the other, creating a torque turning the rotor ina specific direction. The RPM is the same as forthe 3-phase motor.Mechanical and electrical design311153115430Fig.30Fig.31