BALDOR 99883243 AC and DC Motor Instruction Manual
- October 30, 2023
- BALDOR
Table of Contents
BALDOR 99883243 AC and DC Motor
AC & DC Motor Installation & Maintenance Instructions
The following instructions provide information and advice on how to install and maintain the AC & DC motor:
Handling
The weight of the motor and shipping container may vary. Use correct material handling equipment to avoid injury.
Receiving
Inspect the motor for damage before accepting it. The Motor shaft should rotate freely with no rubs. Report any damage immediately to the commercial carrier that delivered your motor.
Safety Notice
Only qualified personnel trained in the safe installation and operation of this equipment should install this motor. When improperly installed or used, rotating equipment can cause serious or fatal injury. Equipment must be installed in accordance with the National Electrical Code (NEC), local codes and NEMA MG2 Safety Standards for Construction and Guide for Selection, Installation and Use of Electric Motors and Generators. Observe the following guidelines:
- When eyebolts are provided, they must be fully tightened and are intended to lift the motor and its included accessories only.
- Ground the motor according to NEC and local codes.
- Provide a permanent guard to prevent accidental contact of body parts or clothing with rotating or moving parts or burns if motor is hot.
- Shaft key must be secured before starting motor.
- Do not apply power to the motor until the motor is securely mounted by its mounting holes.
- This motor must only be connected to the proper line voltage, line frequency and load size.
- If a motor mounted brake is installed, provide proper safeguards for personnel in case of brake failure.
- Disconnect all power services and stop the motor before servicing.
- For single phase motors, discharge the start and/or run capacitors before servicing.
- Do not by-pass or render inoperative any safety device.
- When using AC motors with frequency inverters, be certain that the Maximum Speed rating (on nameplate) is not exceeded.
- Mounting bolts should be high tensile steel. Be sure to use a suitable locking device on each bolt (spring washer or thread lock compound).
Motor Enclosure
ODP, Open drip proof motors are intended for use in clean, dry locations with
adequate supply of cooling air. These motors should not be used in the
presence of flammable or combustible materials. Open motors can emit flame
and/or molten metal in the event of insulation failure.
TEFC, totally enclosed motors are intended for use where moisture, dirt and/or
corrosive materials are present in indoor and outdoor locations. Explosion
proof motors, as indicated by the Underwriters Laboratories, Inc. label are
intended for use in hazardous areas as specified by the NEC.
Mounting
Foot mounted machines should be mounted to a rigid foundation to prevent
excessive vibration. Shims may be used if location is uneven.
Flange mounted machines should be properly seated and aligned. Note: If
improper rotation direction is detrimental to the load, check rotation
direction prior to coupling the load to the motor shaft.
For V-belt drive, mount the sheave pulley close to the motor housing. Allow
clearance
for end to end movement of the motor shaft. Do not overtighten belts as this
may cause premature bearing failure or shaft breakage.
Direct coupled machines should be carefully aligned and the shaft should
rotate freely without binding.
Wiring
Connect the motor as shown in the connection diagram. The wiring, fusing and
grounding must comply with the National Electrical Code and local codes. When
the motor is connected to the load for proper direction of rotation and
started, it should start quickly and run smoothly. If not, stop the motor
immediately and determine the cause.
Possible causes are: low voltage at the motor, motor connections are not
correct or the load is too heavy. Check the motor current after a few minutes
of operation and compare the measured current with the nameplate rating.
Installation
- Install the motor and its included accessories only.
- Ground the motor according to NEC and local codes.
- Provide a permanent guard to prevent accidental contact of body parts or clothing with rotating or moving parts or burns if the motor is hot.
- Secure the shaft key before starting the motor.
- Do not apply power to the motor until it is securely mounted by its mounting holes.
- Connect the motor only to the proper line voltage, line frequency, and load size.
- If a motor mounted brake is installed, provide proper safeguards for personnel in case of brake failure.
- Disconnect all power services and stop the motor before servicing.
- For single-phase motors, discharge the start and/or run capacitors before servicing.
- Do not bypass or render inoperative any safety device.
- When using AC motors with frequency inverters, be certain that the Maximum Speed rating (on nameplate) is not exceeded.
- Use high-tensile steel mounting bolts and a suitable locking device (spring washer or thread lock compound) on each bolt.
Lubrication
This is a ball bearing motor. The bearings have been lubricated at the factory. Motors that do not have regrease capability are factory lubricated for the normal life of the bearings.
Relubrication Intervals (For motors with regrease capability)
New motors that have been stored for a year or more should be relubricated.
Lubrication is also recommended at these intervals:
NEMA (IEC) Frame Size| Rated Speed (RPM)| Up to 210 incl. (132)| Over 210 to
280 incl. (180)| Over 280 to 360 incl. (225)| Over 360 to 5000 incl.(300)
---|---|---|---|---|---
3600| 5500Hrs.| 12000Hrs.| 3600Hrs.| 2200Hrs.| 2200Hrs.
1800| 7400Hrs.| 9500Hrs.| 7400Hrs.| 3500Hrs.| 12000Hrs.
1200| 18000Hrs.| 15000Hrs.| 12000Hrs.| 7400Hrs.| N/A
900| 22000Hrs.| 18000Hrs.| 15000Hrs.| 10500Hrs.| N/A
| NEMA (IEC) Frame Size | Rated Speed (RPM) |
|---|---|
| 3600 | 1800 |
| Up to 210 incl. (132) | 5500Hrs. |
| Over 210 to 280 incl. (180) | 3600Hrs. |
| Over 280 to 360 incl. (225) | *2200Hrs. |
| Over 360 to 5000 incl.(300) | *2200Hrs. |
- Lubrication interval for 6313 or 6314 bearings that are use din 360 through 5000 frame, 2-pole motors. If roller bearings are used, bearings must be lubricated more frequently, divide the interval by 2.
Lubricant
Baldor motors are pregreased, normally with Polyrex EM (Exxon Mobil). If other greases are preferred, check with a local Baldor Service Center for recommendations.
Procedure
Clean the grease fitting (or area around grease hole, if equipped with slotted
grease screws). If motor has a purge plug, remove it. Motors can be regreased
while stopped
(at less than 80°C) or running.
Apply grease gun to fitting (or grease hole). Too much grease or injecting
grease to quickly can cause premature bearing failure. Slowly apply the
recommended amount of grease, taking 1 minute or so to apply. Operate motor
for 20 minutes, then reinstall purge plug if previously removed.
Caution: Keep grease clean. Mixing dissimilar grease is not recommended.
Amount of Grease to Add
Frame Size NEMA (IEC)
| Weight of grease to add
ounce (gram)
| Volume of grease to add
---|---|---
inches 3| teaspoon
Up to 210 incl. (132)| 0.30 (8.4)| 0.6| 2.0
Over 210 to 280 incl. (180)| 0.61 (17.4)| 1.2| 3.9
Over 280 to 360 incl. (225)| 0.81 (23.1)| 1.5| 5.2
Over 360 to 5000 incl.(300)| 2.12(60.0)| 4.1| 13.4
Maintenance Interval for Motors with Baldor Shaft Grounding Brush
Baldor shaft grounding motors are designed for long life, but do require
periodic replacement. Recommended interval for changing the brush assembly on
all frame sizes:
Replacement Intervals
Rated speed (RPM)
3600| 1800| 1200| 900
22,000Hrs.| 44,000Hrs.| 66,000Hrs.| 88,000Hrs.
Applying Grease
- Apply a grease gun to the fitting (or grease hole).
- Slowly apply the recommended amount of grease, taking 1 minute or so to apply. Too much grease or injecting grease too quickly can cause premature bearing failure.
- Operate the motor for 20 minutes, then reinstall the purge plug if previously removed.
Amount of Grease to Add
Frame Size NEMA (IEC)| Up to 210 incl. (132)| Over 210 to 280 incl. (180)|
Over 280 to 360 incl. (225)| Over 360 to 5000 incl.(300)
---|---|---|---|---
Weight of grease to add ounce (gram)| 0.30 (8.4)| 0.61 (17.4)| 0.81 (23.1)|
2.12(60.0)
Caution
Keep grease clean. Mixing dissimilar grease is not recommended.
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