Baldor MN605 Installation And Operating Manual

Contents

Baldor MN605 Installation And Operating Manual Manual pdf 9 page image

2-1MN605Section 2General InformationOverview Installation should conform to the National Electrical Code as well as local codes and practices.When other devices are coupled to the motor shaft, be sure to install protective devices to prevent futureaccidents. Some protective devices include, coupling, belt guard, chain guard, shaft covers etc.These protect against accidental contact with moving parts. Machinery that is accessible to personnel shouldprovide further protection in the form of guard rails, screening, warning signs etc.Caution: Do not use Silicone grease or Sealing Compounds (RTV) on or in the vicinity of the motor or its air supply.Silicone vapor inside the motor will result in extremely rapid brush wear.Location The motor should be installed in an area that is protected from direct sunlight, corrosives, harmful gases orliquids, dust, metallic particles, and vibration. Exposure to these can reduce the operating life and degradeperformance. Be sure to allow clearance for ventilation and access for cleaning, repair, service and inspections.Ventilation is extremely important. Be sure the area for ventilation is not obstructed.Obstructions will limit the free passage of air. Motors get warm and the heat must be dissipated to prevent damage.These motors are not designed for atmospheric conditions that require explosion proof operation.They must NOT be used in the presence of flammable or combustible vapors or dust.TEFC motors can be used for indoor or outdoor standard service. They cannot be used outdoors where theywould be exposed to freezing rain. Standard TEFC motors are not designed for atmospheric conditions requiringexplosion-proof operation, such as flammable or combustible vapors or dust.Caution: Do not lift the motor and its driven load by the motor lifting hardware. The motor lifting hardware isadequate for lifting only the motor. Disconnect the load (gears, pumps, compressors, or other drivenequipment) from the motor shaft before lifting the motor.Mounting The motor must be securely installed to a rigid foundation or mounting surface to minimize vibration and maintainalignment between the motor and shaft load. Failure to provide a proper mounting surface may cause vibration,misalignment and bearing damage.Foundation caps and sole plates are designed to act as spacers for the equipment they support. If these devicesare used, be sure that they are evenly supported by the foundation or mounting surface.After installation is complete and accurate alignment of the motor and load is accomplished, the base should begrouted to the foundation to maintain this alignment.The standard motor base is designed for horizontal or vertical mounting. Adjustable or sliding rails are designedfor horizontal mounting only. Consult your Baldor distributor or authorized Baldor Service Center for furtherinformation.Alignment Accurate alignment of the motor with the driven equipment is extremely important.1. Direct CouplingFor direct drive, use flexible couplings if possible. Consult the drive or equipment manufacturer for moreinformation. Mechanical vibration and roughness during operation may indicate poor alignment.Use dial indicators to check alignment. The space between coupling hubs should be maintained asrecommended by the coupling manufacturer.2. End-Play AdjustmentThe axial position of the motor frame with respect to its load is also extremely important. The motor bearingsare not designed for excessive external axial thrust loads. Improper adjustment will cause failure.3. Pulley RatioThe pulley ratio should not exceed 8:1. Consult your Baldor distributor or authorized Baldor Service Centerfor further information.Caution: Do not over tension belts. Excess tension may damage the motor or driven equipment.4. Belt DriveRefer to NEMA MG 1 section 14.07 or Baldor application section for the application of pulleys, sheaves,sprockets, and gears. Align sheaves carefully to minimize belt wear and axial bearing loads (see End-PlayAdjustment). Belt tension should be sufficient to prevent belt slippage at rated speed and load. However, beltslippage may occur during starting. Do not over-tension belts.Caution: Series wound motors must never be allowed to run with no load (broken belt etc.) An unloaded motor mayreach destructive high speeds.Doweling & BoltingAfter proper alignment is verified, dowel pins should be inserted through the motor feet into the foundation.This will maintain the correct motor position should motor removal be required. (Baldor motors are designed fordoweling.)1. Drill dowel holes in diagonally opposite motor feet in the locations provided.2. Drill corresponding holes in the foundation.3. Ream all holes.4. Install proper fitting dowels.5. Mounting bolts must be carefully tightened to prevent changes in alignment. Use a flat washer and lockwasher under each nut or bolt head to hold the motor feet secure. Flanged nuts or bolts may be used as analternative to washers.