Aerovent IM-301 - Manual (Page 4)

FAN SIZE
MINIMUM TIP
CLEARANCE (IN.)
056 .030
063 .030
071 .030
080 .030
090 .034
100 .038
112 .043
125 .049
140 .055
4.5 MINIMUM BLADE TIP CLEARANCE
The following dimension is the minimum clearance
between the tip of any blade in the fan case.
BOLT SIZE
TORQUE
FT-LBS
5 ⁄
16
-18 13
3 ⁄
16
-16 27.5
1 ⁄
2
-13 75
5 ⁄
8
-11 150
3 ⁄
4
-10 240
7 ⁄
8
-9 380
4.6 INSTRUCTIONS FOR LONG TERM STORAGE
4.6.1 If a fan is not installed immediately upon receipt, it is
the responsibility of the purchaser/user to see to it that
proper procedures are followed in order to minimize deterio-
ration which may result from idle storage.
4.6.2 Fan equipment should be stored indoors or in a well
sheltered location. The storage area must be clean and dry, well
above any maximum anticipated water level. The equipment
should be left crated/skidded, and not stacked over or under
other equipment. Unpainted machined parts should be given a
protective coating of Sprayon #322 or equal; this coating
should be renewed periodically per the manufacturer’s instruc-
tions. For fans equipped with vane sections, the core end cover
should be removed to gain adequate access to the interior and
reach the impeller hub. These interior areas require the same
rust inhibitor application and renewal as given above. The
cover should be replaced for storage, but each may be fastened
with a minimum of assembly hardware to facilitate access.
Remaining fastener hardware should be bagged and tagged,
and attached to the fan to prevent loss of these items. (It is
recommended that the fan be tagged indicating that all fasten-
ers must be replaced before operation.)
4.6.3 Each impeller blade should be numbered in sequence
with a felt-tipped marker. The blade marked No. 1 should be
rotated to top center. The blade number and date should be
recorded in a log book which is to be stored in a protective
pouch attached to the fan. During storage, the fan impeller
should be rotated by hand at least 10 revolutions every 30 days
to circulate the lubricant in the bearings in the motor. After the
tenth revolution, stop with a blade at top center which is not
the same one as is listed for the previous date in the log book.
4.6.4 If the fan motor is equipped with internal heaters, the
heaters must be energized throughout the storage period to
prevent condensation which might damage bearings or electri-
cal components. For motors not equipped with internal heat-
ers, the motor should be enclosed in heavy-duty polyethylene,
wrapped as tightly as possible.
Enclose bags of dessicant (such as Silicagel) with the
motor to minimize moisture problems. Check the dessicant
regularly and replace it periodically as dictated by climate
requirements. In addition, it is strongly suggested that the
motor manufacturer be contacted for specific long term stor-
age instructions.
4.6.5 The bearings in the fan motor or on the fan shaft
should require only minimum lubrication during storage.
Follow lubrication instructions in the instruction manual
enclosed with the fan.
4.6.6 After an extended period of storage, it is advisable to
have the fan motor thoroughly checked before the fan is
installed. Motor bearings, lubricant and electrical condition
should be given special consideration. Reassemble cover to fan
and follow AXIAD instruction manual for installation and
start-up.
AEROVENT | WWW.AEROVENT.COM
5959 Trenton Lane N | Minneapolis, MN 55442 | Phone: 763-551-7500 | Fax: 763-551-7501
®