Rockwell Automation 1329R Small AC Motors, 1/3-3 HP, User Manual - Manual (Page 6)

6 1329R Small AC Motors
Sleeve Bearings
The bearing sleeve is steel on the outside for strength with a tin base
babbit lining on the inside for low friction and long wear. A storage
space around the bearing is filled with Permawick, a commercial
composition of special cellulose fiber highly saturated with oil. The
initial factory Iubrication is normally adequate for approximately one
year under normal operation. Thereafter, lubricate about every six (6)
months. This requires about 3 to 4 squirts from a 4 in. oil can. Use
only LIGHT grade mineral oil (similar to SAE 10W) having viscosity
of 210 sec. at 100
o F. If the motor has been subjected to storage prior
to operation, it is advisable to lubricate in accordance with the above.
Overload Protection Motors supplied with thermal protectors are furnished with either a
manual or automatic reset type to protect against destructive
overheating. If the protector trips, proceed as follows:
Manual Reset Type
1. Wait two minutes.
2. Push in reset plunger until it catches.
Automatic Reset Type
This type will reset itself when the motor cools sufficiently.
If the thermal protector continues to trip, an abnormal condition
exists. This condition must be corrected before motor will operate
normally.
Troubleshooting If trouble develops in operation of motor, be sure that:
1. The bearings are in normal condition and have been properly
lubricated with a high grade, ball bearing lubricant, free of dirt or
grit. (If dirt enters bearing, flush and relubricate.)
2. There is no mechanical misadjustment to prevent free rotation of
moving parts of motor and drive.
3. All bolts and nuts are properly tightened.
4. Motor instructions have been carefully carried out.
5. That rated voltage is available in all phases at the motor terminals.
!
ATTENTION: Motors with automatic reset thermal
protectors should be used in applications where an
unexpected restart would not be hazardous.
If a motor using an automatic reset thermal protector has
tripped “off” make sure to disconnect motor from line
before working near the motor or any equipment driven by
it. Serious injuries could occur otherwise due to an
unexpected “reset” and motor start up.