Groen TDC Installation Manual

Installation Instructions for

Type TBC, TDC, TEBC, TEBH, TEDH Duct Fans

OPERATION AND MAINTENANCE INSTRUCTIONS -- REVERSE SIDE

1. Pre-Installation Check of Fan. Before
installation of an American Coolair fan, a
careful check should be made for shipping
damage which may affect operation of the
unit. If damage is found, file a claim
immediately with delivering carrier. On
belt drive units, pulley alignment and belt
tension should be checked (see paragraph
2 under Operation and Maintenance).
Before connecting to power source, make
sure propeller turns freely without striking
duct or any foreign object. Check motor
nameplate to be sure correct phase and
voltage are being used. Check wiring
diagram to make sure proper connection
are made for the electrical service being
applied. Note direction arrow adjacent to
propeller and make sure rotation is correct
when power is connected.

2. Installation Procedures.
(a) Duct Connections. The American

Coolair duct fan has flanged ends for
convenient mounting directly to the
duct work. Flexible connections or
transition pieces my be utilized.

(b) Motor Position and Wiring. From an

operating standpoint, the American
Coolair duct fan and motor may be
mounted in any position. For
convenience in wiring and service, the
motor should be readily accessible.

(c) Mounting Feet (Optional Accessory).

If duct fan is not adequately supported
by duct work or otherwise, mounting
feet should be utilized. Type and
location of mounts furnished will be
based on customer’s information as to
type of support (floor or ceiling)
available.

Grease Fittings

(Optional)

Mounting

Flange

Access Panel

(Optional)

Mounting Feet

(Optional)

TYPE TB DUCT FAN

(Cutaway View)

NOTE: All local, state and federal
codes should be checked to make sure all
wiring, guarding and intended usage of the
fan unit(s) comply with all applicable codes.
The proper type, class of fan and motor
should be used for air being handled, such as
explosive or hazardous air mixtures.

P.O. Box 2300 ~ Jacksonville, Florida 32203
Phone: [phone]
Fax: [phone] or [phone]
E-mail: [e-mail]

Form No. 410-40-4 (5-09) Printed in U.S.A.

© American Coolair Corporation 2009

Operation and Maintenance Instructions for

Type TBC, TDC, TEBC, TEBH, TEDH Duct Fans

INSTALLATION INSTRUCTIONS -- REVERSE SIDE

1. Fan Cleaning and Adjustment. The entire fan
assembly should be cleaned as necessary to
remove accumulated dust, dirt and other foreign
matter, which may collect on the blades or other
parts. Access to fan through duct work is essential
for proper cleaning. An optional access panel on
fan may be furnished. If so, removal of this panel
allows limited access to fan for inspection, cleaning
and lubrication of motor on direct drive models. On
belt drive models, belt(s) should be inspected and
tension adjusted (see below). Belt alignment should
also be checked to avoid excessive wear and
premature failure. This same inspection of belts and
adjustment of tension should be made after the first
24-48 hours of usage following installation. If rust or
corrosion is found anywhere on the fan, the affected
area should be thoroughly cleaned and refinished.

2. Belt Replacement, Tension and Adjustment.

(a)To change belt(s), loosen motor bracket bolts

and tension adjustment bolts and remove belt(s)
from motor and fan pulleys. Install new belt(s)
and adjust as indicated below. When rep lacing
belt(s), do not roll new belts(s) over pulleys under
tension. This practice can damage the belt(s)
severely.

(b)To tension belt(s), place a finger midway

between the motor pulley and fan pulley and
push belt(s) inward about 1/2” (at approximately
5 lb. force) for proper tension. To adjust tension,
loosen motor bracket bolts and use t ens io n
adjustments bolts to obtain correct belt tension.
Be sure to retighten motor bracket bolts to
maintain proper belt tension. Recheck alignment
of belts between motor pulley and fan pulley.
CAUTION: Use of tension adjustments bolts
makes it easy to over tighten belt(s). When this
occurs, belt(s), motor and fan bearings will soon
fail. Do not over tension.

3. Blade Pitch Adjustment. AMERICAN COOLAIR
DOES NOT RECOMMEND FIELD ADJUSTMENT
OF BLADE PITCH ON TYPE T FANS. Blade pitch
is fixed on TEDH/TEBH fans. Blade pitch is factory
set for specified performance with standard motor
fully loaded on TDC,TBC,TEBC fans. Air volume
may be adjusted through a change in blade pitch.
Any change in blade pitch will affect motor load.

Contact your American Coolair representative
before making any field adjustment of the blade
pitch on these propellers.

4. Adjustment of Fan Speed and Air Volume. On
belt drive models with a variable pitch motor pulley,
fan speed and air flow are easily regulated. Motor

capacity must be carefully checked before any

increase in fan speed is made. Motor capacity
must be carefully checked before any increase in
fan speed is made.

5. Lubrication. Fan bearings on belt drive models
are factory lubricated for extended service.
External grease fittings for fan bearings are
standard on all belt drive models. Relubrication
annually or more frequently is recommended. For
best results, use Shell Alvania No. 3 lubricant or
equivalent. For lubrication of electric motors, see
instructions supplied by motor manufacturer.

6. Repair Parts.

(a) Belts. Replacement belts for belt drive units

are standard V-belts used on industrial
machines. Replacements may be obtained
through local industrial supply houses. If more
than one belt is used on the fan, be sure to
replace with matched sets. To install belt(s),
see instructions above for belt replacement.

(b) Blades. If one or more propeller blades are

damaged, it is recommended that the entire
propeller be replaced or removed and returned
to the factory for repairs. If an unbalanced
condition develops, thoroughly clean blades to
remove dirt or other foreign matter. If
unbalance still exists, treat as blade damage
and replace or return to factory for repairs.

(c) Bearings. Replacement pillow block bearings

may be obtained through local industrial supply
houses.

(d) Motor. Motor repairs should be performed

only by an authorized motor repair station.
Contact the motor manufacturer or American
Coolair for location of repair station.

Caution: Do not return damaged or defective
parts to American Coolair without prior
authorization. If repairs under warranty are
claimed, see warranty terms in American Coolair
catalog or contact the factory in Jacksonville,
Florida. Claims for warranty repairs to electric
motors should be made direct to the motor
manufacturer.

P.O. Box 2300 ~ Jacksonville, Florida 32203
Phone: [phone]
Fax: [phone] or [phone]
E-mail: [e-mail]