CIC/UCIC
Tubular Centrifugal Blowers
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation, operation
and maintenance instructions for standard units of the
CIC/UCIC-Tubular Centrifugal Blowers
this publication prior to any installation or maintenance procedure.
Loren Cook catalog,
describing the equipment, fan performance, available
accessories, and specification data.
For additional safety information, refer to AMCA publication 410-96,
Industrial and Commercial Fans
All of the publications listed above can be obtained from
Loren Cook Company by phoning 417/869-6474, extension
166; by FAX at 417/832-9431; or by e-mail at info@lorencook.com.
For information on special equipment, contact Loren
Cook Company Customer Service Department at 417/869-
6474.
Safety Practices for Users and Installers of
CIC
, provides additional information
.
. Carefully read
Receiving and Inspection
Carefully inspect the fan and accessories for any damage
and shortage immediately upon receipt of the fan.
• Turn the wheel by hand to ensure it turns freely and
does not bind.
• Inspect dampers for free operation of all moving parts.
• Record on the
age.
WARNING
This unit has rotating parts. Safety precautions
should be exercised at all times during installation,
operation, and maintenance.
ALWAYS disconnect power prior to working on fan.
Delivery Receipt
any visible sign of dam-
• Periodically inspect the unit to prevent damaging conditions.
UCIC Storage
To maintain good working condition of a UCIC fan when it
is stored outdoors or on a construction site, always store in
upright position. Also, if the dampers are not mounted, cover
discharge.
Personal Safety
Disconnect switches are recommended. Place the
disconnect switch near the fan in order that the
power can be swiftly cut off in case of an emergency,
and in order that maintenance personnel are
provided complete control of the power source.
Installation
Most motors are shipped mounted on the fans with belts
and drives installed. However, extremely heavy motors and
drives are shipped separately, and some motors are shipped
separately due to height limitations. These motors and drives
will require field installation. Please refer to page 3.
CIC Installation
Arrangements 1 and 9 (FM) are floor-mounted fans. They
require a strong, level foundation of reinforced poured concrete.
The foundation’ s siz e is determined by f an siz e, motor siz e
and position, and the specific location of the installation.
Use the following guidelines to calculate foundation size:
•
The overall dimensions of the f oundation should extend at
least 6 inches beyond the outline of the fan and its motor.
Handling
Lift the fan by the base or lifting eyes.
shaft, motor, windband, or housing.
Never lift by the
Storage
If the fan is stored for any length of time prior to installation, completely fill the bearings with grease or moistureinhibiting oil. Refer to Lubricants on page 6. Also, store the
fan in its original crate and protect it from dust, debris and
the weather.
CIC Storage
To maintain good working condition of a CIC when it is
stored outdoors, or on a construction site, follow the additional steps below.
• Cover the inlet and outlet, and belt tunnel opening to
prevent the accumulation of dirt and moisture in the
housing.
• Periodically rotate the wheel and operate dampers (if
supplied) to keep a coating of grease on all internal
bearing parts.
CIC
•
The weight of the foundation should be 2 to 3 times the
weight of the unit and its motor.
Arrangement 9 (CM) is a ceiling-mounted fan. Suspend
the fan by steel rods strong enough to support the weight
the fan.
UCIC Installation
The fan support (roof curb) should provide a level surface
for installation. If the roof is pitched more than 1/2:12, a
sloped curb must be used to correct for the incline. If the
unit is installed on a non-level surface, the damper door
pivot should be positioned perpendicular to the peak of the
roof.
• Drill a hole in the curb shelf for conduit needed for motor
wiring.
• Install the UCIC fan over the curb with the conduit location in line with the conduit hole in the curb.
• Firmly secure the unit to the curb.
Note
Although a certain amount of vibration is inherent
in operating centrifugal fans, extreme vibration is a
serious problem that may cause structural and
mechanical failure.
Isolation
Floor Mounted Spring Isolators
a. Mount fan and motor on isolation base (if supplied).
b. Elevate fan (or isolation base) to operating height and
insert blocks to hold in position.
c. Position isolators under the fan and vertically align by
inserting leveling bolt through mounting holes in the
fan or the base. The isolator must be installed on a
level surface.
d. Adjust the isolators by turning the leveling nut counter
clockwise several turns at a time alternately on each
isolator until the fan weight is transferred onto the isolators and the fan raises uniformly off the blocks. Then
remove the blocks.
e. Turn lock nut onto leveling bolt and secure firmly in
place against the top of the mounting flange or frame.
f. Secure isolators to mounting surface.
must be installed on a level surface (leveling should
not be required).
e. Secure isolators to mounting surface.
Ceiling Mounted Spring and Rubber-in-Shear (RIS) Isolators
a. Elevate fan to operating height and brace.
b. Attach threaded rod to overhead support structure
directly above each mounting hole. Rod should extend
to within a few feet of fan.
c. Attach isolator to end of threaded rod using a nut on
each side of isolator bracket.
d. Insert another section of threaded rod through the fan
mounting hole and isolator.
e. Attach two nuts to threaded rod in isolator.
f. Place adjusting nut and locking nut on threaded rod
near fan mounting bracket.
g. Alternately rotate adjusting nut at each mounting loca-
tion until the fan weight is uniformly transferred to the
isolators. Remove bracing.
Ceiling Mounted Spring Isolator
Figure 2 - Ceiling Mount Isolators
Rubber-In-Shear Ceiling Isolators
Duct Installation
Efficient fan performance relies on the proper installation
of inlet and discharge ducts. Be sure your fan conforms to
the guidelines below.
Non-Ducted Inlet Clearance
If your fan has an open inlet (no duct work), the f an m ust
be placed 1 fan wheel diameter away from walls and bulkheads.
Rubber-In-Shear Isolator
Spring Isolator
Figure 1 -Floor Mount Isolators
Floor Mounted Rubber-In-Shear (RIS) Isolators
a. Mount fan and motor on an isolation base (if supplied).
b. Elev ate fan to pro vide room to insert isolators between
the fan and foundation and block in position.
c. Position isolators under fan and secure bolts.
d. Remo ve blocks and allow fan to rest on floor. Isolators
MIN
1 DIA
Non-ducted Inlet Clearance
Free Discharge
Avoid a free discharge into the plenum. This will result in
lost efficiency because it doesn’t allow for a static regain.
Correct
Free Discharge
2
Incorrect
Inlet Duct Turns
For ducted inlets, allow at least 3 fan wheel diameters
between duct turns or elbows and the fan inlet.
Correct
Min
3 Dia.
1/4 inch
1 foot
Incorrect
Inlet Duct Turns
Discharge Duct Turns
Where possible, allow 3 duct diameters between duct
turns or elbows and the fan outlet. Refer to the drawing
below.
Correct
Min
3 Dia.
Incorrect
Discharge Duct Turns
Wheel-to-Inlet Clearance
The correct wheel-to-inlet clearance is critical to proper
fan performance. This clearance should be verified before
initial start-up since rough handling during shipment could
cause a shift in fan components. Refer to wheel/inlet drawing below for correct overlap.
Adjust the overlap by loosening the wheel hub and moving the wheel along the shaft to obtain the correct value.
A uniform radial gap (space between the edge of the
cone and the edge of the inlet) is obtained by loosening the
inlet cone bolts and repositioning the inlet cone.
Size Overlap
100
120
Radial Clearance
Wheel/Inlet Overlap
Overlap
135
150
165
180
195
210
225
245
270
300
330
365
402
445
490
540
600
660
730
5/8”
3/4”
1”
1-1/4”
Figure 3
Belt and Pulley Installation
Belt tension is determined by the sound the belts make
when the fan is first started. Belts will produce a loud
squeal which dissipates after the fan is operating at full
capacity. If the belt tension is too tight or too loose, lost efficiency and possible damage can occur.
Do not change the pulley pitch diameter to change tension. This will result in a different fan speed than desired.
a. Loosen motor plate adjustment nuts and move motor
plate in order that the belts can easily slip into the
grooves on the pulleys. Never pry, roll, or force the
belts over the rim of the pulley.
b. Adjust the motor plate until proper tension is reached.
For proper tension, a deflection of approximately 1/4”
per foot of center distance should be obtained by
firmly pressing the belt. Refer to Figure 3 .
c. Lock the motor plate adjustment nuts in place.
d. Ensure pulleys are properly aligned. Refer to Figure 4 .
Correct
Incorrect Incorrect
Figure 4
Pulley Alignment
Pulley alignment is adjusted by loosening the motor pulley setscrew and by
moving the motor pulley on the motor
shaft or by moving the entire motor
along the motor mounting bracket.
Figure 4 illustrates correct and incor-
rect pulley alignment. A recommended
method of inspecting the pulley alignment is shown in Figure 5 . With the
shorter leg of a car penter’s square or other straight edge
lying along the case of the motor, adjust the position of the
motor pulley (or the motor until the longer leg of the square
is parallel to the belt.
3
Incorrect
Figure 5
Wiring Diagrams
Single Speed, Single Phase Motor
Ground A
L
T-5
Ground B
1
Line
L
2
High Speed
Low Speed
Ground A
L
1
Line
L
2
Link A & B
L
1
Line
L
2
T-1
T-4
When ground is required, attach to ground A or B with no. 6 thread forming
screw. To reverse, interchange T-1 and T-4.
Ground B
2 Speed, 2 Winding, Single Phase Motor
Ground A
T-1
T-4
Ground B
When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-1 and T-4 leads.
Single Speed, Single Phase, Dual Voltage
Ground A
L
T-5
J-10
Ground B
When ground required, attach to ground A or B with No. 6 thread forming
screw. To reverse, interchange T-5 and J-10 leads.
Link A
Link B
Low V oltage
1
Line
L
2
J-10
Typical Damper Motor Schematic
Wiring Diagrams
3 Phase, 9 Lead Motor
Y-Connection
Low V oltage
208/230 Volts
4
6
5
3
1
9
728
L2L
L
1
3
High Voltage
460 Volts
456
789
3
12
L2L
L
1
2 Speed, 1 Winding, 3 Phase Motor
High Speed
1
Together
2
Motor
To reverse, interchange any 2 line leads. Motors require magnetic control.
3
L
4
1
L
5
2
6
Line
L
3
2 Speed, 2 Winding, 3 Phase
Low Speed
T
3
Low Speed
T
2
Low Speed
T
Motor
To reverse: High Speed-interchange leads T
Low Speed-interchange leads T
line leads.
1
T
11
T
12
T
13
High Speed
High Speed
High Speed
3 Phase, 9 Lead Motor
Delta-Connection
Low V oltage
208/230 Volts
8
7
6
4
1
2
3
and T
1
L
1
. Both Speeds-interchange any 2
2
L
2
Motor
and T
11
L
Low Speed
High Voltage
460 Volts
9
5
3
3
12
789
456
3
12
L1L
L
3
2
L
1
1
L
2
2
L
3
Open
L
1
L
2
L
3
Line
Line
3
4
5
6
.
Fan
Motor
Transformer**
Damper
Motor*
Transformer**
Second
Damper
Motor
L3
L2
L1
For 3 phase, damper motor voltage should be the same between L
L
. For single phase application, disregard L
2
available in 115, 230 and 460 volt models. The damper motor nameplate
voltage should be verified prior to connection. ** A transformer may be provided in some installations to correct the damper motor voltage to the
specified voltage.
Personal Safety
Disconnect switches are recommended. Place the
disconnect switch near the fan in order that the
power can be swiftly cut off in case of an
emergency, and in order that maintenance
personnel are provided complete control of the
power source.
Wiring Installation
All wiring should be in accordance with local ordinances
and the National Electrical Code, NFPA 70. Ensure the
power supply (voltage, frequency, and current carrying
capacity of wires) is in accordance with the motor nameplate.
Lock off all power sources before unit is wired to
power source.
and
. Damper motors may be
3
1
Leave enough slack in the wiring to allow for motor movement when adjusting belt tension. Some fractional motors
have to be removed in order to make the connection with
the terminal box at the end of the motor. To remove motor,
remove bolts securing motor base to power assembly. Do
not remove motor mounting bolts.
Follow the wiring diagram in the disconnect switch
and the wiring diagram provided with the motor. Correctly label the circuit on the main power box and
always identify a closed switch to promote safety (i.e.,
red tape over a closed switch).
Wheel Rotation
Test the fan to ensure the rotation of the wheel is
counter-clockwise as viewed from the drive side of the
wheel.
4
115 and 230 Single Phase Motors
Fan wheel rotation is set correctly at the factory. Changing the rotation of this type of motor should only be
attempted by a qualified electrician.
208, 230, and 460, 3 Phase Motors
These motors are electrically reversible b y switching tw o
of the supply leads. For this reason, the rotation of the fan
cannot be restricted to one direction at the factory. See
Wiring Diagrams on page 4 for specific information on
reversing wheel direction.
Do not allow the fan to run in the wrong direction.
This will overheat the motor and cause serious damage. For 3-phase motors, if the fan is running in the
wrong direction, check the control switch. It is possible to interchange two leads at this location so that
the fan is operating in the correct direction.
Tubular Centrifugal Wheel Rotation
Final Installation Steps
a. Inspect fasteners and setscrews, particularly fan
mounting and bearing fasteners, and tighten according to the recommended torque shown in the table
Recommended Torque for Setscrews/Bolts .
b. Inspect for correct voltage with voltmeter.
c. Ensure all accessories are installed.
Conditions Chart
RPM Temperature
100 Up to 120˚F Clean 6 to 12 months
500 Up to 150˚F Clean 2 to 6 months
1000 Up to 210˚F Clean 2 weeks to 2 months
1500 Over 210˚F Clean Weekly
Any
Speed
Any
Speed
Any
Speed
Any
Speed
Up to 150˚F Dirty 1 week to 1 month
Over 150˚F Dirty Daily to 2 weeks
Any Temperature Very Dirty Daily to 2 weeks
Any Temperature
Fan
Status
Extreme
Conditions
Greasing
Interval
Daily to 2 weeks
Operation
Pre-Start Checks
a. Lock out all the primary and secondary power
sources.
b. Ensure fasteners and setscrews, particularly those
used for mounting the fan, are tightened.
c. Inspect belt tension and pulley alignment.
d. Inspect motor wiring.
e. Ensure belt touches only the pulley.
f. Ensure fan and ductwork are clean and free of debris.
g. Inspect wheel-to-inlet clearance. The correct wheel-
to-inlet clearance is critical to proper fan performance.
h. Close and secure all access doors.
g. Restore power to the fan.
Start Up
Turn the fan on. In variable speed units, set the fan to its
lowest speed and inspect for the following:
• Direction of rotation.
• Excessive vibration.
• Unusual noise.
• Bearing noise.
• Improper belt alignment or tension
(listen for squealing)
• Improper motor amperage or voltage.
If a problem is discovered, immediately shut the fan
off. Lock out all electrical power and check for the
cause of the trouble. See Troubleshooting .
Inspection
Inspection of the fan should be conducted at the first 30
minute, 8 hour and 24 hour intervals of satisfactory opera-
tion. During the inspections, stop the fan and inspect as per
the Conditions Chart .
30 Minute Interval
Inspect bolts, setscrews, and motor mounting bolts.
Adjust and tighten as necessary.
8 Hour Interval
Inspect belt alignment and tension. Adjust and tighten as
necessary.
24 Hour Interval
Inspect belt tension, bolts, setscrews, and motor mounting bolts. Adjust and tighten as necessary.
Recommended Torque for Setscrews/Bolts (IN/LB.)
Setscrews
Size
No.10 3/32” 28 33 3/8”-16 240
1/4” 1/8” 66 80 1/2”-13 600
5/16” 5/32” 126 156 5/8”-11 1200
3/8” 3/16” 228 275 3/4”-10 2100
7/16” 7/32” 29 348 7/8”-9 2040
1/2” 1/4” 42 504
5/8” 5/16” 92 1104
3/4” 3/8” 120 1440
Key Hex
Across
Flats
Recommended
Torque
Min. Max. Size
Hold Down Bolts
Maintenance
Establish a schedule for inspecting all parts of the fan.
The frequency of inspection depends on the operating conditions and location of the fan.
Inspect fans exhausting corrosive or contaminated air
within the first month of operation. Fans exhausting contaminated air (airborne abrasives) should be inspected
every three months.
Regular inspections are recommended for fans exhausting non-contaminated air.
It is recommended the following inspection be conducted
twice per year.
• Inspect bolts and setscrews for tightness. Tighten as
necessary. Worn setscrews should be replaced immediately.
• Inspect belt wear and alignment. Replace worn belts
with new belts and adjust alignment as needed. Refer
to Belt and Pulley Installation , page 3.
• Bearings should be inspected as recommended in the
5
Conditions Chart .
.
Wrench
Torque
• Inspect variable inlet vanes for freedom of operation
and excessive wear. The vane position should agree
with the position of the control arm. As the variable inlet
vanes close, the entering air should spin in the same
direction as the wheel.
• Inspect springs and rubber isolators for deterioration
and replace as needed.
• Inspect for cleanliness. Clean exterior surfaces only.
Removing dust and grease on motor housing assures
proper motor cooling. Removing dirt from the wheel
and housing prevent imbalance and damage.
Lubricants
Loren Cook Company uses petroleum lubricant in a lithium base. Other types of grease should not be used unless
the bearings and lines have been flushed clean. If another
type of grease is used, it should be a lithium-based grease
conforming to NLGI grade 2 consistency.
A NLGI grade 2 grease is a light viscosity, low-torque,
rust-inhibiting lubricant that is water resistant. Its temperature range is from -30 ° F to +200 ° F and capable of intermittent highs of +250 ° F.
Motor Bearings
Motor bearings are pre-lubricated and sealed. Under normal conditions they will not require further maintenance for
a period of ten years. However, it is advisable to have your
maintenance department remove and disassemble the
motor, and lubricate the bearings after three years of operation in excessive heat and or in a contaminated airstream
consisting of airborne abrasives.
Fan Bearings
CIC and UCIC fan bearings are lubricated through a
grease fitting on the exterior of the fan housing and should
be lubricated by the schedule, Conditions Chart .
For best results, lubricate the bearing while the fan is in
operation. Pump grease in slowly until a slight bead forms
around the bearing seals. Excessive grease can burst
seals thus reducing bearing life.
In the event the bearing cannot be seen, use no more
than three injections with a hand-operated grease gun.
Motor Services
Should the motor prove defective within a one-year
period, contact your local Loren Cook representative or
your nearest authorized electric motor service representative.
Changing Shaft Speed
All belt driven fans with motors up to and including 5 HP
are equipped with variable pitch pulleys. To change the fan
speed, perform the following:
a. Loosen setscrew on driver (motor) pulley and remove
key , if equipped.
b. Turn the pulley rim to open or close the groove facing.
If the pulley has multiple groov es , all m ust be adjusted
to the same width.
c. After adjustment, inspect for proper belt tension.
Speed Reduction
Open the pulley in order that the belt rides deeper in
the groove (smaller pitch diameter).
Speed Increase
Close the pulley in order that the belt rides higher in
the groove (larger pitch diameter). Ensure that the RPM
limits of the fan and the horsepower limits of the motor
are maintained.
Maximum RPM
CIC
Class 1 Class 2 Class 3
Size
120 3948 5151 300 1276 1665 2097
135 3508 4577 330 1162 1516 1910
150 2749 3587 365 1065 1389 1751
165 2509 3273 402 964 1258 1585
180 2150 2805 3534 445 873 1139 1435
195 1987 2592 3266 490 793 1035 1303
210 1841 2402 3026 540 719 938 1182
225 1712 2234 2814 600 648 845 1065
245 1608 2098 2643 660 587 766 965
270 1418 1850 2331 730 532 694 874
Bearing
Support
Assembly
Figure 6- CIC Arrangement 1 Components
Motor
Motor
Plate
Discharge
Cover
Plate
Figure 7 - CIC Arrangement 9 Components
Figure 8 - UCIC Components
6
Discharge
Cover
Discharge Side
Belt
Set
Fan
Sheave
Discharge View
Windband
Motor Plate
CIC
Size
Inlet Plate
Inlet
Cone
Discharge
Assembly
Support
Outboard
Bearing
Class 1 Class 2 Class 3
Inboard
Bearing
Wheel
Opposite Motor Side
Shaft
Inboard
Bearing
Side View
Damper Assembly
Fan Sheave
Outboard Bearing
Inboard Bearing
Shaft
Wheel
Inlet Cone
Curb Cap
Outboard
Bearing
Inlet
Plate
Wheel
Inlet
Cone
Shaft
Pulley and Belt Replacement
a. Remove pulleys from their respective shafts.
b. Clean the motor and fan shafts.
c. Clean bores of pulleys and coat the bores with heavy
oil.
d. Remove grease, rust, or burrs from the pulleys and
shafts.
e. Remove burrs from shaft by sanding.
f. Place fan pulley on fan shaft and motor pulley on its
shaft. Damage to the pulleys can occur when excessive force is used in placing the pulleys on their
respective shafts.
g. Tighten in place.
h. Install belts on pulleys and align as described in the
Belt and Pulley Installation section.
Bearing Replacement
The fan bearings are pillow block ball bearings.
Figures 6 , 7 , and 8 , on page 6, show the components
described in the following steps.
CIC Bearing Replacement
a. Loosen and remo v e belts b y lo wering motor mounting
plate with the four adjusting nuts.
b. Remove the discharge cover by removing the attach-
ing bolts around the perimeter of the inner drum (discharge end of unit). Do not remove fan sheave yet .
c. Remove the discharge cover by removing the attach-
ing bolts around the perimeter of the inlet plate.
d. Remove inlet cone by removing attaching bolts/nuts
around perimeter of the inlet plate.
e. Remove wheel by loosening setscrews and sliding off
shaft. A 2-jaw puller may be required.
f. Record the location of the fan sheave from end of
shaft, and remove the sheave.
g. Record the distance from either bearing to the end of
the shaft.
h. Loosen setscrews on bearings and remove shaft.
i. Mark setscrew location on shaft and smooth down
any raised shaft material as required.
j. Remo v e bearings from bearing base and replace with
new ones, noting the exact location of each; do not
fully tighten base bolts .
k. Slide shaft through bearings until shaft protrudes the
same amount as measured above. Tapping the inner
race of each bearing with a soft driver may be
required. Do not hammer the end of the shaft or
the bearing housing.
l. Return setscrews to same location as marked above
and tighten one setscrew on each bearing to half its
specified torque.
m. Rotate the shaft to allow the bearings to align them-
selves.
n. Install wheel and inlet cone to their proper location per
wheel-to-inlet clearance section on page 3.
o. Tighten hold-down bolts to proper torque.
p. Turn the shaft by hand. resistance should be the same
as it was before hold-down bolts were fully tightened.
q. Tighten all bearing setscrews to full specified torque.
r. Replace the sheave, align with motor sheave, and
adjust the belt tension.
s. Test run fan and retighten all setscrews and bolts, and
trim balance as necessary (.0785 in/sec max).
t. Replace discharge cover.
After 24 hours of operation, retighten all setscrews and
bolts to the appropriate torque.
UCIC Bearing Replacement
a. Remove windband and damper assembly.
b. Remove fan from curb, then lay the fan on its side to
allow access to the underside.
c. Loosen and remove belts by lowering the motor slide
base with the four adjusting nuts.
d. Remove the discharge cover by removing the attach-
ing bolts around the perimeter of the inner drum (discharge end of unit). Do not remove fan sheave yet .
e. Remo ve inlet cone b y removing attaching bolts around
the perimeter of the inlet cone.
f. Remove wheel by loosening setscrews and sliding off
shaft.
g. Record the location of the fan sheave from end of
shaft, and remove the sheave.
h. Record the distance from either bearing to the end of
the shaft.
i. Loosen setscrews on Bearings and remove shaft.
j. Mark setscrew location on shaft and smooth do wn any
raised shaft material as required.
k. Remo ve bearings from bearing base and replace with
new ones, noting the exact location of each; do not
fully tighten base bolts.
l. Slide shaft though bearings until shaft protrudes the
same amount as measured above. Tapping the inner
race of each bearing with a soft driver may be
required. Do not hammer the end of the shaft or the
bearing housing .
m. Return setscrews to same location as marked above
and tighten one setscrew on each bearing to half its
specified torque.
n. Rotate the shaft to allow the bearings to align them-
selves.
o. Install wheel and inlet cone to their proper location per
wheel-to-inlet clearance section on page 3.
p. Tighten hold-down bolts to proper torque.
q. Turn the shaft by hand. Resistance should be the
same as it was before hold-down bolts w ere fully tightened.
r. Tighten all bearing setscrews to full specified torque.
s. Replace the sheave, align with motor sheave, and
adjust the belt tension.
t. Replace unit on curb and reconnect power.
u. T est run f an and retighten all setscre ws and bolts, and
trim balance as necessary (.0785 in/sec max.).
v. Replace discharge cover.
w. Replace windband and damper assembly.
After 24 hours of operation, retighten all setscrews and
bolts to the appropriate torque.
7
Troubleshooting
Problem and Potential Cause
Low Capacity or Pressure
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Poor fan inlet conditions. There should be a straight clear duct at the inlet.
•Improper wheel alignment.
Excessive Vibration and Noise
•Damaged or unbalanced wheel.
•Belts too loose; worn or oily belts.
•Speed too high.
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Bearings need lubrication or replacement.
•Fan surge or incorrect inlet or outlet conditions.
Overheated Motor
•Motor improperly wired.
•Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly.
•Cooling air diverted or blocked.
•Improper inlet clearance.
•Incorrect fan RPMs.
•Incorrect voltage.
Overheated Bearings
•Improper bearing lubrication
•Excessive belt tension.
CIC Arrangement 1 Parts List
3
4
AIRFLOW
2
1
Item No.
1 Wheel 9 Motor Slide Base
2 Inlet Cone 10 Motor
3 Inlet Plate 11 Motor Sheave
4 Housing 12 Belt Set
5 Inboard Bearing 13 Floor Mount Legs (2)
6 Outboard Bearing 14 Discharge Cover Plate
7 Shaft 15 Fan Sheave
8 Channel Base 16 Bearing Support Assembly
5
6
7
11
10
9
8
Motor Side
Description
Sizes 120 - 730 Sizes 120 - 730
Item No.
13
12
15
14
Discharge Side
Description
16
8
CIC Arrangement 9 Parts List - Floor Mount
3
2
1
Side View
Item No.
1 Belt Set 9 Outboard Bearing
2 Motor Sheave 10 Inboard Bearing
3 Motor 11 Housing
4 Motor Plate 12 Wheel
5 Discharge Cover Plate 13 Inlet Cone
6Fan Sheave 14 Inlet Plate
7 Bearing Support Assembly 15 Floor Mount Legs (2)
8 Shaft
4
9
5
6
7
Description
Sizes 120-730 Sizes 120 -730
8
AIRFLOW
Motor Side
Item No.
10
11
12
13
Discharge Side
Description
14
15
9
CIC Arrangement 9 Parts List - Ceiling Mount
3
2
1
Discharge View
SIZES 120 - 490
4
5
6
11
10
7
9
8
Airflow
Side View
12
13
14
Inlet View
15
SIZES 540 - 730
Airflow
16
Item No.
1Fan Sheave 1 Fan Sheave
2 Belt Set 2 Belt Set
3 Motor 3 Motor
4 Motor Sheave 4 Motor Sheave
5 Motor Plate 5 Motor Plate
6 Discharge Cover Plate 6 Discharge Cover Plate
7 Bearing Support Assembly 7 Bearing Support Assembly
8 Inboard Bearing 8 Inboard Bearing
9 Outboard Bearing 9 Outboard Bearing
10 Shaft 10 Shaft
11 Housing 11 Housing
12 Hanging Brackets (4) 12 —
13 Inlet Cone 13 Inlet Cone
14 Wheel 14 Wheel
15 Inlet Plate 15 Inlet Plate
16 — 16 Support Legs (2)
17 — 17 Channel Base
Description
Sizes 120 - 490 Sizes 540 - 730
Item No.
Description
17
10
CIC-Arrangement 9 Vertical Floor/Ceiling Mount Parts List
3
2
1
Discharge View
4
12
11
5
6
10
9
7
8
Item No.
1 Belt Set
2 Motor Sheave
3 Motor
4 Motor Plate
5 Discharge Cover Plate
6Fan Sheave
7 Bearing Support Assembly
8 Floor Mount Legs/Hanging Brackets (4)
9 Shaft
10 Outboard Bearing
11 Inboard Bearing
12 Housing
13 Wheel
14 Inlet Cone
15 Inlet Plate
Airflow
Side View
Description
Sizes 120 - 730
13
14
15
Inlet View
11
UCIC Parts List
9
1
6
5
4
3
Part
No.
Description
Sizes 120-600
1 Damper Stop
2 Housing
3 Motor Plate
4Weather Cover (standard)
5 Motor
6 Motor Sheave
7 Belt Set
8 Windband
9Fan Sheave
10 Butterfly Damper Assembly
11 Outboard Bearing
12 Bearing Support Assembly
13 Inboard Bearing
14 Shaft
15 Wheel
16 Inlet Cone
17 Curb Cap
8
10
7
11
12
13
14
15
2
16
17
Airflow
Limited Warranty
Loren Cook Company warrants that your Loren Cook fan was manufactured free of defects in materials and workmanship, to the extent stated herein. For a period of one (1)
year after date of shipment, we will replace any parts found to be defective without charge, except for shipping costs which will be paid by you.
This warranty is granted only to the original purchaser placing the fan in service.
This warranty is void if the fan or any part thereof has been altered or modified from its original design or has been abused, misused, damaged or is in worn condition or if
the fan has been used other than for the uses described in the company manual. This warranty does not cover defects resulting from normal wear and tear.
To make a warranty claim, notify Loren Cook Company, General Offices, 2015 East Dale Street, Springfield, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to the specific model and serial numbers of your fan. Upon receipt by Loren Cook Company of your written complaint, you will be notified, within thirty (30)
days of our receipt of your complaint, in writing, as to the manner in which your claim will be handled. If you are entitled to warranty relief, a warranty adjustment will be completed within sixty (60) business days of the receipt of your written complaint by Loren Cook Company.
This warranty gives only the original purchaser placing the fan in service specifically the right. You may have other legal rights which vary from state to state.
Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474
www.lorencook.com
12
CIC/UCIC IOM - October 2001
Loading...