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BALDOR MN427 Inverter Duty PM Motors Manual
http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html
This instruction manual is not intended to include a comprehensive listing of all details for all
procedures required for installation, operation and maintenance. This manual describes general
guidelines that apply to most of the motor products shipped by Baldor. If you have a question
about a procedure or are uncertain about any detail, Do Not Proceed.
Please contact your Baldor District office for more information or clarification.
Before you install, operate or perform maintenance, become familiar with the following if applicable to
your area:
NEMA Publication MG-2, Safety Standard for Construction and guide
for Selection, Installation and Use of Electric Motors and Generators.
IEC 34−1 Electrical and IEC72−1 Mechanical specifications
ANSI C51.5, the National Electrical Code (NEC) and local codes and practices.
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Table of Contents
Troubleshooting
Related Manuals for Baldor MN427
Summary of Contents for Baldor MN427
- Page 1 This manual describes general guidelines that apply to most of the motor products shipped by Baldor. If you have a question about a procedure or are uncertain about any detail, Do Not Proceed.
- Page 2 RPM AC Cooling Tower Inverter Duty PM Motors (FL250, FL280, FL440 and FL580) (Specifically designed for operation with VS1CTD Adjustable Speed Cooling Tower Controls) Installation & Operating Manual 2/12 MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
- Page 3 Any trademarks used in this manual are the property of their respective owners. Important: Be sure to check www.baldor.com for the latest version of this manual in Adobe Acrobat PDF format. This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
- Page 4 ................3−3 Suggested bearing and winding RTD setting guidelines for Non−Hazardous Locations ONLY ... . 3−4 MN427 Table of Contents i This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
- Page 5 Section 1 General Information ii Table of Contents MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
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Page 6: Section 1 General Information
This manual describes general guidelines that apply to most of the motor products shipped by Baldor. If you have a question about a procedure or are uncertain about any detail, Do Not Proceed. - Page 7 These motors are not designed for atmospheric conditions that require explosion proof operation. WARNING: UL Listed motors must only be serviced by UL Approved Authorized Baldor Service Centers if these motors are to be returned to a hazardous and/or explosive atmosphere. WARNING: Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft extensions, should be permanently guarded to prevent accidental contact by personnel.
- Page 8 3. Measure and record the resistance of the winding insulation (dielectric withstand) every 30 days of storage. a. If motor insulation resistance decreases below the minimum resistance, contact your Baldor District office. b. Place new desiccant inside the vapor bag and re−seal by taping it closed.
- Page 9 A decrease in resistance indicates moisture in the windings and necessitates electrical or mechanical drying before the motor can be placed into service. If resistance is low, contact your Baldor District office. 3. Regrease the bearings as instructed in Section 3 of this manual.
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Page 10: Section 2 Installation & Operation
When installation is complete and accurate alignment of the motor and fan is accomplished, the base should be grouted to the foundation to maintain this alignment. The standard motor base is designed for vertical mounting. MN427 Installation & Operation 2−1 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html... - Page 11 Mechanical vibration and roughness during operation may indicate poor alignment. Use dial indicators to check alignment. The space between fan hub and motor should be checked and maintained as recommended by the fan manufacturer. 2−2 Installation & Operation MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
- Page 12 To protect against motor overheating, thermostats must be connected to the appropriate controller circuit (function loss). Failure to connect the thermostats will void the motor warranty. Refer to MN776UG for correct thermostat lead connections. MN427 Installation & Operation 2−3 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
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Page 13: Fan Mounting
RPM AC cooling tower motors are supplied with a shaft suitable for mounting the fan hub directly to the motor shaft. The motor must be ordered with the appropriate shaft dimensions to match the fan hub. 2−4 Installation & Operation MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html... -
Page 14: Optional Accessories
* One bearing RTD is installed in Drive end plate (PUEP), leads are labeled RTDDE. * One bearing RTD is installed in Opposite Drive end plate (FREP), leads labeled RTDODE. * Note RTD may have 2−Red/1−White leads; or 2−White/1−Red Lead. MN427 Installation & Operation 2−5 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html... - Page 15 Balance is done with a full length 1/2 height shaft key. A full shaft key is shipped with motor. Table 2−3 Dynamic Balance NEMA Velocity Peak (in/sec) Velocity Peak (mm/sec RMS) 0-600 0.15 2−6 Installation & Operation MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
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Page 16: Section 3 Maintenance & Troubleshooting
Section 3 Maintenance & Troubleshooting WARNING: UL Listed motors must only be serviced by UL Approved Authorized Baldor Service Centers if these motors are to be returned to a hazardous and/or explosive atmosphere. WARNING: Pacemaker danger − Magnetic and electromagnetic fields in the vicinity of current carrying carrying conductors and permanent magnet motors can result result in a serious health hazard to persons with cardiac pacemakers, metal implants, and hearing aids. - Page 17 Lubrication cycle based upon maximum ambient temperature of 40C and a minimum air flow of 750ft/min over the motor. Motors are shipped from the factory with full grease cavities and ready for operation. 3−2 Maintenance & Troubleshooting MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
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Page 18: Troubleshooting Chart
Excessive humming High Voltage. Check input line connections. Eccentric air gap. Have motor serviced at local Baldor service center. Motor Over Heating Overload. Compare actual amps Locate and remove source of excessive friction in (measured) with nameplate rating. - Page 19 S Winding RTDs are factory production installed, not from Mod−Express. S When Class H temperatures are used, consider bearing temperatures and relubrication requirements. Bearing RTDs − Temperature Limit In 5C (405C Maximum Ambient) Anti−Friction Bearing Type Grease Alarm Trip Standard 3−4 Maintenance & Troubleshooting MN427 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...
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Page 20: Baldor District Offices
Baldor District Offices This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html... - Page 21 World Headquarters P.O. Box 2400 Fort Smith, AR 72901−2400 (479) 646−4711 Fax (479) 648−5792 www.baldor.com 2011 Baldor Electric Company All rights reserved. Printed in USA MN427 2/12 This Manual:http://www.manuallib.com/baldor/mn427-inverter-duty-pm-motors-manual.html...