OMM-23-1009-page 11
Any accessories used in conjunction with the blower should also be inspected to make sure they are functioning
within their intended limits and design specifications. The manufacturers maintenance manuals should be referred to
for correct maintenance procedures. These accessories include, but are not limited to, the following:
Shaft seals, inspection doors, vibration isolators or vibration bases, air flow or pressure measuring equipment,
hoods, controls, special coatings, silencers, expansion joints, valves, flexible connectors and filters.
VI. ORDERING REPLACEMENT PARTS:
Under normal conditions, you should not need any spare or replacement parts for at least 24 months after shipment
from Cincinnati Fan. That does not include any wear due to abrasion, corrosion, excessive temperatures, abuse, mis-
use, accident or any severe conditions the fan was not designed for.
NOTICE:
1. If this blower is vital to any process that could cost you lost revenue, we strongly recommend that you keep
a replacement blower wheel and motor at your location.
2. If this blower is vital for the safety of any people and/or animals, we strongly recommend that you keep a
complete blower/motor assembly, as originally ordered, at your location.
To order any parts or complete units, contact us for the name of our sales office for your area. Or you can find
them on our website at:
www.cincinnatifan.com
WE MUST HAVE THE BLOWER SERIAL NUMBER FROM THE BLOWER NAME PLATE TO IDENTIFY PARTS CORRECTLY.
VII. TROUBLESHOOTING
Troubleshooting should only be performed by trained personnel. Any potential electrical problems should only
be checked by a licensed electrician. All safety rules, regulations and procedures MUST be followed. Failure to
follow proper procedures can cause property damage, severe bodily injury and death.
DANGER
PROBLEM CAUSE
Excessive Vibration
1. Loose mounting bolts, wheel set screws, taper-lock hubs.
2. Worn or corroded blower wheel.
3. Accumulation of foreign material on blower wheel.
4. Bent motor shaft.
5. Worn motor bearings.
6. Motor out of balance.
7. Inadequate structural support.
8. Support structure not sufficiently cross braced.
9. Weak or resonant foundation.
10. Foundation not flat and level.
Airflow (CFM) Too Low
1. Blower wheel turning in wrong direction (
rotation
).
2. Actual system static pressure (
SP
) is higher than expected.
3. Motor speed (
RPM
) too low.
4. Dampers or valves not adjusted properly.
5. Leaks or obstructions in duct work.
6. Filters dirty.
7. Inlet and/or discharge guards are clogged.
8. Duct elbow too close to blower inlet and/or discharge.
9. Improperly designed duct work
10. Blower wheel not properly located relative to the inlet bell (
LM
Model only).
Airflow (CFM) Too High
1. Actual system static pressure (
SP
) is lower than expected.
2. Motor speed (
RPM
) too high.
3. Filter not in place.
4. Dampers or valves not adjusted properly.
Potential problems and causes listed below are in no order of importance or priority. The causes are only a list
of the most common items to check to correct a problem. If you find the cause of a problem,
DO NOT
assume it is
the
ONLY
cause of that problem. Different problems can have the same causes.
