Spencer Single-Stage Scroll Blowers - Manual (Page 9)

V. Lubrication Instructions
WARNING: DISCONNECT AND LOCK OUT
ELECTRICAL POWER BEFORE PERFORMING
LUBRICATION.
Motor Bearings
Follow the motor manufacturer's recommendations.
Some motors are equipped with sealed bearings not
intended for relubrication; these motors have no
grease or drain plugs.
Blower Bearings (Arrangement 8)
Blowers are equipped with deep-groove ball bearings
designed to carry the thrust and radial loads. These
bearings are packed at the factory with sufficient
grease for 1500 to 8000 hours of continuous
operation prior to relubrication. Lubrication prior to
blower operation is not recommended and should
not be attempted.
If, however, the blower has been stored for three
months or longer, remove the bearing caps and
check for moisture or hard grease. Discard any hard
or dry grease and relubricate if necessary.
An average lubrication interval should be established
based on existing conditions. Several factors affect
the frequency of lubrication:
1. Operating temperature of the bearing
2. Indoor or outdoor blower location
3. Clean or dusty conditions
4. Ambient temperature
5. Predicted duty cycle
6. Bearing size and speed
Under actual operating conditions, the ideal
lubrication interval of 8000 hours should be adjusted
according to the following table.
NOTE: The higher limit of each range shown is for
small bearings (#308 and smaller); the lower limit is
for large sizes. This table is only a guide. An
extremely dirty atmosphere could decrease the
lubrication interval as much as 50%.
Operating Condition Lubrication Interval
I 1. 120-150 °F bearing temp. 4000-6000 hours
2. Indoor installation
3. Clean atmosphere
4. 40-100 °F ambient temp.
5. Continuous operation
II Same conditions as I 6000-8000 hours
except Intermittent operation
III 1. 120-155 °F bearing temp. 3000-5000 hours
2. Outdoor installation
3. All atmospheres
4. 0-104 °F ambient temp.
5. Continuous operation
IV Same conditions as III 5000-7000 hours
except intermittent operation
IV. Replacement Parts
How to order replacement parts
When ordering replacement parts, it is important that
the information you furnish to Spencer is correct. Be
sure when reading nameplates that you obtain the
correct information. Remember, the more complete
the information, the quicker the order will be
processed; incomplete information will result in
unnecessary delays and expense through callbacks.
When in doubt, consult the factory for further
information.
To order replacement parts, furnish the following:
1. Machine model and serial number from machine
nameplate.
2. Motor horsepower from motor nameplate.
3. Measure and record the casing diameter.
4. Refer to applicable illustration in the instruction
manual and locate needed item by its circled call-
out number. Refer to callout list for nomenclature
and record.
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The Spencer Turbine Company ◆ 600 Day Hill Road, Windsor, CT 06095 ◆ TEL 800-232-4321 ◆ 860-688-8361 ◆ www.spencerturbine.com