Loren Cook Propeller Wall Installation Manual

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.

Propeller Wall

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.

Propeller Wall Fans

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

This publication contains the installation, operation
and maintenance procedures for standard units of the
Propeller Wall and X.Stream- Propeller Wall Fans.

•APD •APB •AWBS/AWBE

•EPB •EPD •EWB

•EWD •EWBSM •SWD

•SPB •SPD •SWDS

•XLWHS/XMWHS •XLWH/XMWH

•XLPH/XMPH •XLPHS/XMPHS

•XLW/XMW •XLWS/XMWS

•XLP/XMP •XLPS/XMPS

Carefully read this publication prior to any installa­tion or maintenance procedure.

Loren Cook catalog, Propeller Wall and X.Stream, pro-
vides additional information describing the equipment, fan
performance, available accessories and specification data.

For additional safety information, refer to AMCA publica­tion 410-96, Safety Practices for Users and Installers of
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 and instructions on special equipment,
contact Loren Cook Company at 417.869.6474.

Installation

Fans mounted to a wall require a different wall opening
size than fans mounted in wall collars or wall housings. For
specific dimensions, refer to the submittal drawing for the
specific fan type.

Motor Installation

To prevent damage to the fan during shipping, motors 5
HP and larger, and extremely heavy motors (cast iron or
severe duty) are shipped loose and must be field mounted
by bolting the motor on the motor mounting plate in the
existing slots.

The motor should be mounted in order that the motor
plate is between the fan shaft and the motor shaft.

a. Remove the motor plate mounting bolts and motor

plate.

b. Remove the motor mounting bolts from the motor

plate.

c. Mount the motor to the motor plate aligning the appro-

priate holes.

d. Place the motor plate on the power assembly and

reinstall the mounting bolts.

Receiving and Inspection

Carefully inspect the fan and accessories for any da mage

and shortage immediately upon receipt of the fan.

• Turn the propeller by hand to ensure it turns freely and
does not bind.

• Record on the Delivery Receipt any visible sign of dam­age.

Handling

Lift propeller wall fans by attachment to the power assem­bly or by the shipping carton. Never lift by the shaft, motor
or housing.

Storage

If the fan is stored for any length of time prior to installa­tion, coat the shaft with grease or a rust preventative com­pound. Store it in its original shipping crate and protect it
from dust, debris and the weather.

Rotate the wheel several revolutions every three to five
days to keep a coating of grease on all internal bearing
parts.

AWB

Belt and Pulley Installation

1 foot

1/4 inch

Figure 1

Figure 2

Tolerance

Center Distance

Maximum

Gap

Up thru 12” 1/16”

12” up through 48 1/8”

Over 48” 1/4”

OFFSET ANGULAR OFFSET/ANGULAR

A

W

X

Y

Z

B

CENTER

DISTANCE

(CD)

GAP

GAP

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 p ersonnel are provided
complete control of the power source.

Belt tension is determined by the sound of the belts when
the fan is first started. The belts will produce a loud squeal,
which dissipates after the fan is operating at full capacity. If
belt tension is too tight or too loose, lost efficiency and dam­age can occur.

Do not change the pulley pitch diameter to change tension.
The change will result in a different fan speed.

a. Loosen the motor plate adjustment nuts on motor base

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 1.
c. Lock the motor plate adjustment nuts in place.
d. Ensure pulleys are properly aligned. Refer to Figure 2.

Pulley Alignment

Pulley alignment is adjusted by loosen­ing the motor pulley setscrew and by
moving the motor pulley on the motor
shaft.

Figure 2 indicates where to measure
the allowable gap for the drive alignment
tolerance. All contact points (indicated by
WXYZ) are to have a gap less than the
tolerance shown in the table. When the
pulleys are not the same width, the allowable gap must be
adjusted by half of the difference in width. Figure 3 illustrates
using a carpenter’s square to adjust the position of the motor

Figure 3

pulley until the belt is parallel to the longer leg of the square.

Fan Installation

Insert the fan into the wall opening and secure wit h lag

screws, anchor bolts, or other suitable fasteners.

Always mount belt drive wall fans in order that the motor

base is below the fan shaft.

Wiring Installation

All wiring should be in accordance with local ordinances
and the National Electrical Code, NFP A 70. Ensure the power
supply (voltage, frequency, and current carrying capacity of
wires) is in accordance with the motor nameplate. Refer to
the Wiring Diagrams, next page.

Lock off all power sources before unit is wired to power
source.

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.

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).

Wall Fans

a. Extend wires to the fan.
b. Prevent excess wire from entering the shaft and propel-

ler area by restraining the excess wire to a point outside
the base.

Wall Fans with Wire Guard

a. Remove end panel from the wire gua rd to gain access to

the motor.

b. Extend wires through a side panel of the wire guard to

gain access to the motor.

c. Prevent excess wire from entering the shaft and propel-

ler area by restraining the excess wire to a point outside
the base.

Wall Fans with Wall Housing

a. Remove end guard from the wall housing.
b. Drill a hole through either side panel at a convenient

location and pull the wires through. Do not pull wires
through wire guard at the back panel.

c. Restrain the incoming wire at the side panel to prevent

excess wire from entering the shaft and propeller area.

Shutter Installation

If your fan is supplied with a shutter, follow the direction
below. If your fan is not supplied with a shutter, proceed to
Final Installation Steps.

To ensure long-life, make a weather-proof seal by using a
good quality silicon caulking under the shutter flange.

a. Place the shutter into the wall opening.

2

T-1
T-4

Ground B

L

2

L

1

Ground A

Line

Wiring Diagrams

Low Speed
Low Speed
Low Speed

High Speed
High Speed
High Speed

T

3

T

2

T

1

T

11

T

12

T

13

Motor

L

1

L

2

L

3

Line

Fan

Motor

Damper

Motor*

Second

Damper

Motor

Transformer**

Transformer**

L3
L2
L1

Ground A

Ground B

T-1

T-4

Low Speed

High Speed

L

1

L

2

Line

Single Speed, Single Phase Motor

Wiring Diagrams

3 Phase, 9 Lead Motor

When ground is required, attach to ground A or B with no. 6 thread forming
screw. To reverse, interchange T-1 and T-4.

2 Speed, 2 Winding, Single Phase Motor

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

Line

L

1

T-5

J-10

2

Ground B

J-10

T-5

Link A

Link B

Low Voltage

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.

Ground A

Link A & B

L

Line

L

1

2

Typical Damper Motor Schematic

3 Phase, 9 Lead Motor
Y-Connection

Low Voltage

208/230 Volts

4

5

6

3

1

9

728

L2L

L

1

3

High Voltage

460 Volts

456

789

12

L2L

L

1

3

3 Phase, 9 Lead Motor
Delta-Connection

Low Voltage

3

208/230 Volts

7
6

1

L

1

9

8

5

4

3

2

L

L

3

2

High Voltage

460 Volts

789

456

3

12

L

L

1L3

2

To reverse, interchange any 2 line leads.

2 Speed, 1 Winding, 3 Phase Motor

High Speed

1

Together

2

Motor

3

L

4

1

L

5

2

6

Line

L

3

To reverse, interchange any 2 line leads. Motors require magnetic control.

Low Speed

Motor

L

1

1

L

2

2

3

Line

L

3

4

Open

5
6

2 Speed, 2 Winding, 3 Phase

To reverse: High Speed-interchange leads T
Low Speed-interchange leads T
line leads.

and T2. Both Speeds-interchange any 2

1

and T12.

11

b. Mount the shutter to the supporting surface using

Number 12 sheet metal screws on six inch centers
around the perimeter.

c. Manually operate the shutter to ensure the blades

move freely.

Typical Installation

Refer to page 5.

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 on page 4, Recommended Torque for Set-

screws/Bolts.
b. Inspect for correct voltage with voltmeter.
c. Ensure all accessories are installed.

d. Test the fan to be sure the rotation is the same as

indicated by the arrow marked Rotation.

For 3 phase, damper motor voltage should be the same between L1 and L2.
For single phase application, disregard L
in 115, 230 and 460 volt models. The damper motor nameplate voltage should

. *Damper motors may be available

3

be verified prior to connection. **A transformer may be provided in some in­stallations to correct the damper motor voltage to the specified voltage.

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.

Operation

Pre-Start Chec ks

a. Lock out all the primary and secondary power sources.
b. Inspect fasteners and setscrews, particularly those

used for mounting the unit, and tighten if necessary.

c. Inspect belt tension and pulley alignment. (Remember,

if belt tension is correct, a loud squeal occurs as the fan

increases to full power.)
d. Inspect motor wiring.
e. Ensure the belt touches only the pulleys.
f. Rotate the prop to ensure it does not rub against the

venturi.

3

g. Ensure fan and ductwork are clean and free of de b ris.

Recommended Torque for Setscrews/Bolts (IN/LB.)

Setscrews

Hold Down Bolts

Size

Key Hex

Across

Flats

Recommended Torque

Inch-lbs.

Min. Max. Size

Wrench Torque

(inch-lbs)

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” 348 384 7/8”-9 2040

1/2” 1/4” 504 600 1”-8 3000
5/8” 5/16” 1104 1200 1-1/8”-7 4200
3/4” 3/8” 1440 1800 1-1/4”-7 6000

Relubrication Intervals

Service

Conditions

NEMA Frame Size

Up to and

including 184T

213T-365T 404T and larger

1800 RPM

and less

Over 1800

RPM

1800 RPM

and less

Over 1800

RPM

1800 RPM

and less

Over 1800

RPM

Standard 3 yrs. 6 months 2 yrs. 6 months 1 yr. 3 months

Severe 1 yr. 3 months 1 yr. 3 months 6 months 1 months

h. Test the fan to ensure the rotation of the propeller is the

same as indicated by the rotation label.
i. Close and secure all access doors.
j. Restore power to unit.

Start Up

Turn the fan on. In variable speed units, set the fan to it s

lowest speed. Inspect for the following:

• Direction of rotation.

• Excessive vibration.

• Unusual noise.

• Bearing noise.

• Improper belt alignment or tension (listen for a continuous
squealing noise).

• Improper motor amperage or voltage.

If a problem is discovered, immediately shut off the
fan. Lock out all electrical power and c heck for th e cause
of the trouble. Refer to Troubleshooting, page 7.

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
directions below.

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. Adjust and tighten as necessary.

• Inspect belt wear and alignment. Replace worn belts with
new belts and adjust alignment as needed. See Belt and
Pulley Installation, on page 2.

• Bearings should be inspected as recommended in the

Conditions Chart, below.

• Inspect for cleanliness. Clean exterior surfaces only.
Removing dust and grease on motor housing assures
proper motor cooling.

Lubricants

Loren Cook Company uses petroleum lubricant in a lithium
base conforming to NLGI grade 2 consistency. Other grades
of grease should not be used unless the bearings and lines
have been flushed clean. If another grade of grease is used,
it should be lithium-based.

A NLGI grade 2 grease is a light viscosity, low-torque, rust­inhibiting 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

Motors are provided with prelubricated bearings. Any lubri­cation instructions shown on the motor nameplate supersede
instructions below.

Direct Drive 1050/1075,1200,1300 &1500 rpm units use a
prelubricated sleeve bearing that has a oil saturated wicking
material surrounding it. The initial factory lubrication is ade­quate for up to 10 years of operation under normal conditions.
However, it is advisable to add lubricant after 3 years. Use
only LIGHT grade mineral oil or SAE 10W oil up to 30 drops.
If the unit has been stored for a year or more it is advisable to
lubricate as directed above. For units in severe conditions,
lubrication intervals should be reduced to half.

Motors without sleeve bearings (as described above) will
have grease lubricated ball or roller bearing s. Motor b earing s
without provisions for relubrication will operate up to 10 years
under normal conditions with no maintenance. In severe
applications, high temperatures or excessive contaminates, it
is advisable to have the maintenance department disassem­ble and lubricate the bearings after 3 years of opera tio n to
prevent interruption of service.

For motors with provisions for relubrication, follow intervals
of the table below.

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. Clean the propeller and air inlets if material
build-up is excessive. Excessive build-up can cause imbal­ance and failure of the propeller.

Regular inspections are recommended for fans exhausting
non-contaminated air.

It is recommended the following inspections be conducted
twice per year.

• Inspect bolts and setscrews for tightness. Tighten as nec­essary.

Motors are provided with a polyurea mineral oil NGL I #2
grease. All additions to the motor bearings are to be with a
compatable grease such as Exxon Mobil Polyrex EM and
Chevron SRI.

The above intervals should be reduced to half for vertical

shaft installations.

4

Fan Bearings

The fan bearings are provided prelubricated. Any spe­cialized lubrication instructions on fan labels supersedes
information provided herein. Bearing grease is a petro leum
lubricant in a lithium base conforming to a NLGI #2 consis­tency. If user desires to utilize another type of lubricant,
they take responsibility for flushing bearings and lines, and
maintaining a lubricant that is compatible with the installa­tion.

A NLGI #2 grease is a light viscosity, low-torque, rust­inhibiting lubricant that is water resistant. Its temperature
range is from -30°F to 200°F and capable of intermittent
highs of 250°F.

Bearings should be relubricated in accordance with the
condition chart below.

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 damage
seal and reduce life through excess contamination and/or
loss of lubricant.

In the event that the bearing cannot be seen, use no
more than three injections with a hand operated grease
gun.

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 ma in ­tained.

Pulley and Belt Replacement

a. Clean the motor and fan shafts.
b. Loosen the motor plate mounting bolts to relieve the

belt tension. Remove the belt.

c. Loosen the pulley setscrews and remove the pulleys

from the shaft.

If excessive force is required to remove the pulleys, a
three-jaw puller can be used. This tool, however , can easily
warp a pulley. If the puller is used, inspect the trueness of
the pulley after it is removed from the shaft. The pulley will
need replacement if it is more than 0.020 inch out of true.

d. Clean the bores of the pulleys and place a light coat of

oil on the bores.
e. Remove grease, rust and burrs from the shaft.
f. Place fan pulley on the fan shaft and the motor pulley

on the motor shaft. Damage to the pulleys can occur

when excessive force is used in placing the pulleys on

their respective shafts.

Conditions Chart

RPM Temp °F Greasing Interval

Up to 1000

1000 to 3000

Over 3000

Any Speed < -30 Consult Factory
Any Speed > 200 1 week

For moist or otherwise contaminated installations; divide the interval by a
factor of 3. For vertical shaft installations divide the interval by a factor of 2.

-30 to 120 6 months
120 to 200 2 months

-30 to 120 3 months
120 to 200 1 month

-30 to 120 1 month
120 to 200 2 weeks

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 Propeller Wall fans with motors up to and
including 5HP 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 r im to open or close the groove facing .

If the pulley has multiple grooves, all must 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).

Maximum RPM

SWD

Size

Maximum

RPM

8 1690 24 1675 24 1510
10 1550 30 1370 30 1145
12 1615 36 1310 36 990
14 1130 42 1175 42 905
16 1115 48 1215 48 900
18 1095 54 960 - ­20 1075 60 890 - ­24 1050 72 700 - -

EWB

Size

Maximum

RPM

AWB

Size

Maximum

Maximum RPM

APB

Maximum

Size

24 1005 20 1280 - ­30 800 24 1012 24 1110
36 645 30 666 30 930
42 660 36 566 36 714
48 605 42 424 42 610

RPM

-- 48 356 48 512

-- 54 316 54 472

- - 60 260 60 446

XLP/XLPS

Size

Maximum

RPM

XLPH/XLPHS

Size

Maximum RPM

XMP/XMPS

Size

Maximum

RPM

20 1280 - - 20 1276
24 1276 24 1410 24 1018
30 830 30 1172 30 674
36 680 36 838 36 570
42 498 42 716 42 422
48 414 48 596 48 356
54 346 54 516 54 320
60 318 60 474 60 256

XMPH/

XMPHS

Size

Maximum

RPM

XLW/

XLWS

Size

Maximum RPM

XLWH/

XLWHS

Size

Maximum

RPM

- - 20 1462 - ­24 1126 24 1272 24 1400
30 932 30 860 30 1184
36 720 36 672 36 864
42 610 42 498 42 718
48 516 48 416 48 600
54 478 54 350 54 522
60 438 60 320 60 476

XMW/

XMWHS

Size

Maximum

RPM

XMWH/

XMWHS

Size

RPM

Maximum

RPM

Maximum

RPM

Maximum

RPM

5