FULL OVERHAUL FOR AMMONIA COMPRESSOR MOTOR

THE TEAM AT BOWERS ELECTRICALS has recently carried out a full overhaul of a 160kW, 2 Pole, IP23, drip-proof motor, one of three motors that run an ammonia compressor used in a food processing factory at a UK supplier of frozen chicken and turkey meat.

The IP23 rating and the drip-proof enclosure allow for ventilation whilst providing protection from objects greater than 12mm and falling water or dirt entering the motor.

The motor was rewound by one of the company’s engineers before going through its stove and varnish procedure. The motor was fully dipped in Bowers’ varnish tank, soaked for 30 minutes and then lifted and drained. It was then put in the oven overnight at 150ºC. The varnish makes it stronger electrically and mechanically, stopping any movement of wires and insulation.

The end shield also had some mechanical repairs with the bearing housing relined due to wear from mechanical damage.

The final stages of the overhaul saw the motor cleaned, painted, and then reassembled with new bearings before undergoing a full test.