Rotating Electrical Machines Spare parts, installation and maintenance of ac motors 103-4E
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Contents Introduction Pre-installation requirements Warning Receipt Lifting Eyebolt/lifting lug bolt torques Motor weights Storage Environment Drain holes Bearings Grease Heaters Insulation resistance Wound rotors Installation General Location Mechanical installation Drain holes Alignment Noise levels Free rotation Slide rails Electrical connection Cable terminations Drying out procedures Supply Earthing Heater/thermi
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Installation and maintenance of ac electric induction motors Introduction Your Brook Crompton motor is designed for long life, and low running costs. Careful installation and maintenance will ensure that you achieve reliable operation and optimum efficiency.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Storage Shielded bearings have a storage life of five If motors have to be stored before years and a further two years operational life installation, precautions should be taken to following installation. prevent deterioration. contaminating solvent.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Installation and maintenance of ac electric induction motors Noise levels regulations. The equipment must be (see motor nameplate) without overheating The noise levels published in current Sales correctly fused and isolated. All covers must or excessive voltage drop under starting Specifications are equal to or less than the be in position prior to running. conditions.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors 17 strip paint from the pads where the feet Control gear Some initial bearing noise may be present Ensure all control gear and associated during the running in period. This is normal are to be fitted and apply a thin film of metering/protection circuits have been because the grease has to settle down grease for corrosion protection on bare checked fully. within the bearing.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Installation and maintenance of ac electric induction motors An overgreased bearing will cause over- 4 fit flange ring onto spigot, positioning heating of the bearing with the possible fixing holes to provide either BS or DIN escape of the grease, loss of lubrication flange hole positions qualities, leading to ultimate bearing failure. Lubrication procedure The following procedure should be adopted.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Hazardous area motors Endshield fixing bolt torques Type Metric Bolt dia NEMA/CSA W-DA Aluminium frames Torque Nm Lbf.FT DF & W-DF Cast iron frames Torque Nm Lbf.FT In addition to the conditions referred to, K-CF Torque Nm Lbf.FT special requirements apply to motor types Ex N, Ex nA, EEx e, EEx d, EEx de. Refer to – – – the approval certificate and appropriate – – – – codes of practice eg BS 5435.
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Spare parts, installation & maintenance Aluminium construction - frame sizes DA63, W-DA71 to W-DA180* 17 13 29 1 15 16 10 30 11 9 20 19 12 14 23 24 25 26 18 27 2 28 4 7 5 6 21 22 8 3 Ref Part description 1 Aluminium flange endshield, frames 100132, cast iron flange frames 160-180 Endshield fixing bolt Drive end endshield Rotor assembly Flinger Drive end oil seal Preload washer Drive end be
3-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Spare parts, installation & maintenance Cast iron construction - frame sizes W-DF112 to W-DF180 11 10 9 7 13 12 25 24 16 15 2 4 26 29 28 27 30 20 3 21 22 18 14 5 8 5 17 23 19 1 Ref 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 10 Part description Drive end endshield Drive end oil seal Drive end endshield fixing screws Pre-load washer Drive end bearing Fan
103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors Spare parts, installation & maintenance Cast iron construction - frame sizes W-DF200 to W-DF355L 47 46 45 44 42 48 43 49 41 40 38 39 37 36 31 35 33 32 34 10 1 9 27 2 21 22 23 25 24 26 20 18 30 19 50 28 15 29 7 14 8 4 3 50 11 12 13 5 6 Alternative W-DF280M to W-DF355L terminal box arrangement 47A 46A 45A 43A 49A 38A 48A 39A 41A 35A 37A 36A 34A 16 17 Ref Part description 1 2
Rotating Electrical Machines Every care has been taken to ensure the accuracy of the information contained in this publication, but, due to a policy of continuous development and improvement the right is reserved to supply products which may differ slightly from those illustrated and described in this publication For the most recent version of any Brook Crompton catalogue/leaflet, please refer to www.brookcrompton.
