Larkin XUEF-100 User manual

Utility Fans 1

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble,

install, operate or maintain the product described. Protect yourself and others by observing all safety

information. Failure to comply with these instructions will result in voiding of the product warranty and may

result in personal injury and/or property damage.

Document 480081

Model XUEF(D)-100, XUEF-200, 300 and 400

Utility Fans

General Safety Information

Only qualiﬁed personnel should install this fan.

Personnel should have a clear understanding of these

instructions and should be aware of general safety

precautions. Improper installation can result in electric

shock, possible injury due to coming in contact with

moving parts, as well as other potential hazards.

Other considerations may be required if seismic

activity is present. If more information is needed,

contact a licensed professional engineer before

moving forward.

1. Follow all local electrical and safety codes, as

well as the National Electrical Code (NEC) and the

National Fire Protection Agency (NFPA), where

applicable. Follow the Canadian Electric Code

(CEC) in Canada.

2. The rotation of the wheel is critical. It must be free

to rotate without striking or rubbing any stationary

objects.

3. Motor must be securely and adequately grounded.

4. Do not spin fan wheel faster than max cataloged

fan RPM. Adjustments to fan speed signiﬁcantly

effects motor load. If the fan RPM is changed, the

motor current should be checked to make sure it is

not exceeding the motor nameplate amps.

5. Do not allow the power cable to kink or come in

contact with oil, grease, hot surfaces or chemicals.

Replace cord immediately if damaged.

6. Verify that the power source is compatible with the

equipment.

7. Never open access doors to a duct while the fan is

running.

XUEF-300

XUEF-200

XUEF-400

XUEFD-100 XUEF-100

Utility Fans2

Receiving

Upon receiving the product, check to ensure all

items are accounted for by referencing the delivery

receipt or packing list. Inspect each crate or carton

for shipping damage before accepting delivery. Alert

the carrier of any damage detected. The customer

will make a notation of damage (or shortage of items)

on the delivery receipt and all copies of the bill of

lading which is countersigned by the delivering

carrier. If damaged, immediately contact your local

representative. Any physical damage to the unit after

acceptance is not the responsibility of manufacturer.

Unpacking

Verify that all required parts and the correct quantity

of each item have been received. If any items are

missing, report shortages to your local representative

to arrange for obtaining missing parts. Sometimes it

is not possible that all items for the unit be shipped

together due to availability of transportation and truck

space. Conﬁrmation of shipment(s) must be limited to

only items on the bill of lading.

Handling

Fans are to be rigged and moved by the lifting

brackets provided or by the skid when a forklift is

used. Location of brackets varies by model and size.

Handle in such a manner as to keep from scratching

or chipping the coating. Damaged ﬁnish may reduce

the ability of the fan to resist corrosion. Fans should

never be lifted by the shaft, fan housing, motor, belt

guard, windband or accessories.

Storage

• Rotate fan wheel monthly and purge bearings once

every three months.

• Energize fan motor once every three months.

• Store belts ﬂat to keep them from warping and

stretching.

• Store unit in a location which does not have

vibration.

• After storage period, purge grease before putting

fan into service.

If storage of fan is in a humid, dusty or corrosive

atmosphere, rotate the fan and purge the bearings

once a month. Improper storage which results in

damage to the fan will void the warranty.

Fans are protected against damage during shipment.

If the unit cannot be installed and operated

immediately, precautions need to be taken to prevent

deterioration of the unit during storage. The user

assumes responsibility of the fan and accessories

while in storage. The manufacturer will not be

responsible for damage during storage. These

suggestions are provided solely as a convenience to

the user.

INDOOR -

The ideal environment for the storage of

fans and accessories is indoors, above grade, in a

low humidity atmosphere which is sealed to prevent

the entry of blowing dust, rain or snow. Temperatures

should be evenly maintained between 30° to 110°F

(-1° to 43°C), wide temperature swings may cause

condensation and “sweating” of metal parts. All

accessories must be stored indoors in a clean, dry

atmosphere.

Remove any accumulations of dirt, water, ice, or snow

and wipe dry before moving to indoor storage. To avoid

“sweating” of metal parts allow cold parts to reach

room temperature. To dry parts and packages use a

portable electric heater to remove any moisture build

up. Leave coverings loose to permit air circulation and

to allow for periodic inspection.

The unit should be stored at least 3½ inches

(89 mm)

off the ﬂoor on wooden blocks covered with moisture

proof paper or polyethylene sheathing. Aisles between

parts and along all walls should be provided to permit

air circulation and space for inspection.

OUTDOOR - Fans designed for outdoor applications

may be stored outdoors, if absolutely necessary.

Roads or aisles for portable cranes and hauling

equipment are needed.

The fan should be placed on a level surface to prevent

water from leaking into the fan. The fan should be

elevated on an adequate number of wooden blocks

so it is above water and snow levels and has enough

blocking to prevent it from settling into soft ground.

DANGER

Always disconnect, lock and tag power source

before installing or servicing. Failure to disconnect

power source can result in fire, shock or serious

injury.

CAUTION

When servicing the fan, motor may be hot enough

to cause pain or injury. Allow motor to cool before

servicing.

CAUTION

Precaution should be taken in explosive

atmospheres.

DANGER

Pour écarter les risques d’incendie, de choc

électrique ou de blessure grave, veiller à toujours

débrancher, verrouiller et étiqueter la source de

courant avant l’installation ou l’entretien.

ATTENTION

Lors de toute intervention sur la soufflante, le moteur

peut être suffisamment chaud pour provoquer

une douleur voire une blessure. Laisser le moteur

refroidir avant toute maintenance.

ATTENTION

Faire preuve de précaution dans les atmosphères

explosives.

Utility Fans 3

Locate parts far enough apart to permit air circulation,

sunlight and space for periodic inspection. To

minimize water accumulation, place all fan parts on

blocking supports so rain water will run off.

Do not cover parts with plastic ﬁlm or tarps as these

cause condensation of moisture from the air passing

through heating and cooling cycles.

Fan wheels should be blocked to prevent spinning

caused by strong winds.

Inspection and Maintenance During

Storage

While in storage, inspect fans once per month. Keep a

record of inspection and maintenance performed.

If moisture or dirt accumulations are found on parts,

the source should be located and eliminated. At

each inspection, rotate the wheel by hand ten to

ﬁfteen revolutions to distribute lubricant in motor and

bearings. If paint deterioration begins, consideration

should be given to touch-up or repainting. Fans with

special coatings may require special techniques for

touch-up or repair.

Machined parts coated with rust preventive should be

restored to good condition promptly if signs of rust

occur. Immediately remove the original rust preventive

coating with petroleum solvent and clean with lint-

free cloths. Polish any remaining rust from surface

with crocus cloth or ﬁne emery paper and oil. Do not

destroy the continuity of the surfaces. Thoroughly

wipe clean with Tectyl®506 (Ashland Inc.) or the

equivalent. For hard to reach internal surfaces or for

occasional use, consider using Tectyl®511M Rust

Preventive, WD-40®or the equivalent.

Removing from Storage

As fans are removed from storage to be installed

in their ﬁnal location, they should be protected and

maintained in a similar fashion until the fan equipment

goes into operation.

Prior to assembly and installation of the unit and

system components, inspect the fan assembly to

make sure it is in working order.

1. Check all fasteners, set screws on the fan, wheel,

bearings, drive, motor base and accessories for

tightness.

2. Rotate the fan wheel by hand and assure no parts

are rubbing. Access to the wheel is obtained

through a bolted panel located on the side of the

fan housing.

3. Ensure proper wheel settings for radial gap and

alignment. Refer to Radial Gap, Overlap and Wheel

Alignment section on page 10.

Table of Contents

General Safety Information .................... 1

Receiving, Unpacking, Handling .............. 2

Storage .................................2-3

Inspection and Maintenance During Storage..... 3

Removing from Storage ..................... 3

General Information

Unit and System Identification Tags............ 4

Pre-Installation Information .................. 4

Electrical Disconnects ...................... 4

Moving Parts.............................. 4

Guards - Motor Cover, Weatherhood, Shaft,

Belt, Inlet or Outlet Guard .................. 4

Access Doors ............................. 4

Air Pressure and Suction .................... 4

Fans - Rigging and Lifting....................4-6

Installation

Discharge Positions ........................ 6

Ducted Inlet Installations .................... 7

Ducted Outlet Installations ................... 7

Non-Ducted Installations .................... 7

Bases (Foundation and Isolation) .............. 7

Fan Drainage Piping and Trap Detail ........... 8

Electrical Connections ....................... 8

Electrical Disconnects and Moving Parts........ 8

UL/cUL 762 Listed Fans for Restaurant Exhaust . . . 8

V-Belt Drives

V-Belt Drive Installation ..................... 9

Alignment of Pulleys and Belts................ 9

Field Coating Touch-Up Procedure for

Scratched Areas ........................... 9

Radial Gap, Overlap and Wheel Alignment

Radial Gap and Alignment .................. 10

Method for Centering Wheel ................ 10

Wheel Rotation ........................... 10

Radial Gap and Overlap Dimensions .......... 10

Unit Start-Up

Visual Inspection of Equipment .............. 11

Check .................................. 11

Additional Steps for Initial Start-Up ........... 11

Model XUEFD-100-BI - Three-phase .......... 11

Vibration ................................. 12

Routine Maintenance and Operation

Fan Operation............................ 12

Motors.................................. 12

Belt Drive Maintenance .................... 13

XUEF-100 Belt Adjustment.................. 13

Wheel and Fastener Maintenance ............ 13

Bearing Lubrication Schedule ............... 14

Variable Frequency Drive Operation ............ 14

Model XUEFD-100-BI - Variable Speed Drives . . 14

Bearing Replacement

Bearing Removal ......................... 15

Bearing Installation ........................ 15

Parts List ...............................16-18

Troubleshooting............................ 19

Maintenance Log.....................Backcover

Our Commitment.....................Backcover

Utility Fans4

Guards – Motor Cover, Weatherhood,

Shaft, Belt, Inlet or Outlet Guard

Do not operate fans without proper protective devices

in place. Failure to do so may result in serious bodily

injury and property damage. Check local codes to

ensure compliance for all protective devices.

Access Doors

Before opening access doors, ensure the fan wheel

has stopped moving and that the wheel has been

secured from being able to rotate. Do not operate fan

without access door in its fully closed position.

Air Pressure and Suction

In addition to the usual hazards associated with

rotating machinery, fans also create a dangerous

suction at the inlet. Special caution needs to be used

when moving around a fan, whether it is in operation

or not. Before start-up, make sure the inlet area is

clear of personnel and loose objects.

Fans – Rigging and Lifting

IMPORTANT

Fans should never be lifted by the shaft, motor,

motor cover or accessories.

To ensure a successful installation, the instructions in

this manual should be read and adhered to. Failure to

comply with proper installation procedures may void

the warranty.

Unit and System Identiﬁcation Tags

Each fan has a permanently afﬁxed manufacturer’s

engraved metal nameplate containing the model

number and individual serial number.

The tag shown is an example of an identiﬁcation

nameplate on the fan. The information provides

general details about

the fan, as well as

containing speciﬁc

information unique

to the unit. When

contacting your

local manufacturer’s

representative with future needs or questions, please

have the information on this label available. Tags are

mounted in an area which is clearly visible, usually on

the side of the fan cabinet.

Pre-Installation Information

Before installation, it is important to be certain the

mounting surface will bear the operating weight of the

unit. For proper unit operation, it is also important that

it be operated in a completely level position.

For further details on safety practices involving

industrial and commercial fans, please refer to AMCA

Publication410.

Electrical Disconnects

All fan motors should have disconnects located in

close visual proximity to turn off electrical service.

Service disconnects shall be locked-out when

maintenance is being performed.

Moving Parts

All moving parts must have guards to protect

personnel. Refer to local codes for requirements as to

the number, type and design. Fully secure fan wheel

before performing any maintenance. The fan wheel

may start “free wheeling” even if all electrical power

has been disconnected. Before the initial start-up or

any restart, check the following items to make sure

that they are installed and secure.

• Do not spin fan wheel faster than the maximum

cataloged fan RPM.

• Adjustments to fan speed signiﬁcantly effects

motor load. If the fan RPM is changed, the motor

current should be checked to make sure it is not

exceeding the motor nameplate amps.

General Information

1. Before lifting, be sure that all shipping materials

have been removed from the unit.

2. Use standard lifting and rigging practices.

3. ALL lifting brackets on each unit must be utilized at

the same time.

4. Fan to be kept level during lifting and installation.

5. Spreader bars must span the unit to prevent

damage to the unit by the lifting cables.

6. Always test-lift the unit to check for proper balance

and rigging before hoisting to desired location.

7. Never lift unit in windy conditions.

8. Preparation of roof opening should be completed

prior to lifting unit to the roof.

Fans are to be rigged and moved by the lifting

brackets provided or by the skid when a forklift is

used. Location of brackets varies by model and size.

Handle in such a manner as to keep from scratching

or chipping the coating. Damaged ﬁnish may reduce

ability of fan to resist corrosion.

See coating repair section of this manual for details

regarding touch-up of damaged surfaces.

NOTE

Models XUEF(D)-100-BI and XUEF-100-FC will

include an integrated electrical disconnect.

Utility Fans 5

NOTE

• Certain images are shown with higher lifting points

on the unit. These are tie-off points to balance the

load while lifting.

• Motor covers on certain size units and arrange-

ments need to be removed prior to rigging and

lifting as shown in diagram.

IMPORTANT

Spreader bars are recommended to prevent

damage to the unit. Failure to use spreader bars

may result in damage which becomes the installer’s

responsibility.

Optional Height Savings Bracket

For illustration purposes, some lifting location images

with isolation bases are shown with optional height

savings brackets. Lift unit using the corner hole

located in the isolation base; with and without the

height savings bracket.

Isolation Base Isolation Base with

Height Savings Bracket

XUEFD-100, XUEF-200 and XUEF-300 Arrangement 10

Without Isolation Base

Sizes 7 thru 24

XUEF-300 Arrangement 10

Without Isolation Base

Sizes 27 thru 49

XUEF-100 Arrangement 10

Without Isolation Base

Sizes 4 thru 24

Utility Fans6

XUEF-400 Class 0, I, II, Arrangement 10

Without Isolation Base

Sizes 7 thru 30 Installation

Move the fan to the desired location. Check and

tighten fasteners throughout the unit and then fasten

securely through mounting holes provided in the base

angles. The unit must be set level (shimming may be

necessary). Flexible duct connections and vibration

isolators should be used where noise is a factor.

The motor voltage and ampere rating must be

checked for compatibility with the electrical supply

prior to ﬁnal electrical connection. Supply wiring to the

fan must be properly fused, and conform to local and

national electrical codes.

The discharge is factory set as speciﬁed by customer

order, however, certain sizes can be rotated to

other discharge positions in the ﬁeld if necessary.

If rotating the fan housing, accommodations may

need to be made for the fan to drain properly. The

XUEF(D)-100, XUEF-200, and XUEF-300, all sizes,

have ﬁeld rotatable housings. For the XUEF-400,

rotatable housings are standard on sizes 30 and less,

arrangement10, and Class 0, I and II. Removal of the

housing bolts allows the discharge to be rotated to the

clockwise positions shown above. For downblast(DB)

discharge position, a portion of the frame angle must

be removed.

Fan rotation is always speciﬁed from the drive side of

the housing.

Installations with inlet or discharge conﬁgurations

that deviate from this manual may result in reduced

fan performance. Restricted or unstable ﬂow at the

fan inlet can cause pre-rotation of incoming air or

uneven loading of the fan wheel yielding large system

losses and increased sound levels. Free discharge

or turbulent ﬂow in the discharge ductwork will also

result in system effect losses. Refer to the following

diagrams for the most efﬁcient installation conditions.

XUEF-200

XUEF-300 and XUEF-400

CW UB

CCW UB CCW TH

CW TH

CW BH

CCW BH

CW BAU

CCW BAU

CW UB

CCW UB CCW TH

CW TH

CW TAU

CCW TAU

XUEF(D)-100

CW UB CW TH

*Except XUEFD-100-BI

CW BH*

Discharge Positions

XUEF-400 Arrangement 10

Without Isolation Base

Sizes 33 thru 73

Utility Fans 7

Turning

Vanes

POOR GOOD

Turning

Vanes

GOOD

Three fan wheel diameters

Inlet Spin - Inlet spin is a frequent cause of reduced

fan performance. The change in fan performance is a

function of the intensity of spin and not easily deﬁned.

The best solution is proper duct design and airﬂow

patterns. Turning vanes reduce the effects of inlet

spin.

Ducted Inlet Installations

Inlet Duct Turns - Installation of a duct turn or elbow

too close to the fan inlet reduces fan performance

because air is loaded

unevenly into the fan

wheel. To achieve full

fan performance, there

should be at least three

fan wheel diameters

between the turn or

elbow and the fan inlet. POOR

Ducted Outlet Installations

Discharge Duct Turns - Duct turns located near the

fan discharge should always be in the direction of the

fan rotation.

Fan performance is reduced when duct turns

are made immediately off the fan

discharge. To achieve cataloged fan

performance there should be at least

three equivalent

duct diameters of

straight ductwork

between the fan

discharge and

any duct turns.

Non-Ducted Installations

Inlet Clearance - Installation of a fan with an open

inlet too close to a wall or bulkhead will cause

reduced fan performance. It is desirable to have

a minimum of three-fourths of a wheel diameter

between the fan inlet and the wall.

Free Discharge - Free or abrupt discharge into a

plenum results in a reduction in fan performance. The

effect of discharge static regain is not realized.

POOR

Length of Straight Duct

GOOD

3/4 to one

fan

wheel

diameter

Single Fan Installation

Bases (Foundation and Isolation)

Critical to every fan installation is a strong, level

foundation. A reinforced poured concrete pad with

a steel base or inertia base provides an excellent

foundation. Bases must be sturdy enough, with

welded construction, to prevent ﬂexing and vibration.

To eliminate vibration and noise from being

transferred to the building, vibration isolators should

be used. The fan is mounted directly on the isolation

base and must be supported for the entire length of

the fan base angle. Isolators are installed between the

isolation base and the foundation.

After the fan, isolation base,

and isolators are installed,

the entire assembly must be

leveled. Position the level

on the isolation base, not

the fan shaft, for proper

leveling. Additionally,

the motor and fan

shafts must be

level and parallel

relative to each

other for proper

alignment. Typical Fan on Isolation Base

Utility Fans8

Fan Drainage Piping and Trap Detail

(by others)

Fans may have been supplied with an optional drain.

Drains are located at the underside of the scroll

housing. The drain may need to be connected to a

drainage system to ensure proper disposal of any

water or condensate that may occur.

• Drain connections with a plug are 1.0 inch

(25.4mm) MNPT.

• Installed piping to have a downward angle to allow

for drainage.

• Fill traps to recommended level before start-up.

Note: A conservative method of trap design is to set

N = total static pressure.

Check local codes for proper disposal of drain water

which has been in contact with the exhaust air.

Fans used for grease exhaust need to be equipped

with a separate grease collector.

Positive Pressure Trap

N = Negative fan pressure (inches W.C.)

H = N - 0.5 inches minimum

H/2 H/2

1.25 inch

minimum

FAN ONFAN OFF

Connect

this end

to fan drain.

Installation of UL/cUL 762 Listed

Fans for Restaurant Exhaust

The UL/cUL 762 listing for restaurant exhaust is

available on the XUEF-300 and 400.

UL/cUL 762 fans are listed for a maximum operating

temperature of 400°F

(204°C)

and includes an access

door and 1inch

(25.4mm)

drain connection. An

outlet guard is strongly recommended when the fan

discharge is accessible. An upblast discharge is

recommended. The fan discharge must be a minimum

of 40 inches

(1016 mm)

above the roof line and the

exhaust duct must be fully welded to a distance of

18inches

(457mm)

above the roof surface.

40 in.**

(1016 mm)

18 in.*

(457 mm)

Duct

from

kitchen

hood

Upblast Discharge

Optional Companion

Flange

3 Wheel

Diameters

Weatherhood

**Per NFPA 96 the fan discharge must

be a minimum of 40 in. (1016 mm)

above the roof surface.

*Per NFPA 96 the duct

must be of all-welded

construction to a

minimum distance of

18 inches (457 mm)

above the roof surface.

This drawing is for dimensional information only. See the latest edition

of NFPA 96 Standard for Ventilation Control and Fire Protection of

Commercial Cooking Operations for detailed installation instructions,

materials, duct connections and clearances.

XUEF 300 and 400 models are listed

for grease removal (UL/cUL 762)

File no. MH11745

Drain Options

XUEF(D)-100 Drain only*

XUEF-200

None

Drain only*

With plug

XUEF-300 None

With plug

XUEF-400 None

With plug

*1.0 inch (25.4 mm) non-threaded drain hole

Electrical Connections

Before electrical connections are made, the supply

voltage, phase and ampere capacity must be checked

for compatibility with the fan motor. In addition, the

supply wiring must be properly fused and conform

to local and national electrical codes. If the unit is

supplied with a safety disconnect switch, ensure

proper wiring to the fan motor. Be sure the disconnect

is switched to the “OFF” position before connecting

supply wires. If no disconnect is supplied, ensure the

supply wire is not live before connection. Supply wires

are then connected to the optional safety disconnect

switch (if supplied) or motor.

IMPORTANT

When installing a fan, ensure the proper protective

devices are used to protect personnel from

moving parts and other hazards. A complete line

of protective accessories are available from the

manufacturer including: inlet guards, outlet guards,

belt guards, shaft guards, protective cages and

electrical disconnects.

Electrical Disconnects

All fan motors should have disconnects located in

close visual proximity to turn off electrical service.

Service disconnects shall be locked out when

maintenance is being performed.

Moving Parts

All moving parts must have guards to protect

personnel. Refer to local codes for requirements

as to the number, type and design. Fully secure fan

wheel before performing any maintenance. The fan

wheel may start “free wheeling” even if all electrical

power has been disconnected. Before the initial

start-up or any restart, check the guards (belt, shaft,

inlet and outlet) and check the access doors to

ensure that they are installed and secure.

Utility Fans 9

The adjustable motor pulley is set at the factory for

the fan RPM speciﬁed by the customer. Fan RPM can

be increased by closing or decreased by opening the

adjustable motor pulley. Multigroove variable pitch

pulleys must be adjusted an equal number of turns

open or closed. Any increase in fan speed represents

a substantial increase in load on the motor.

To avoid motor overheating and possible burnout,

motor load amperes should always be checked and

compared to nameplate rating when fan speed is

increased.

Alignment of Pulleys and Belts

Check pulleys and belts for proper alignment to avoid

unnecessary belt wear, noise, vibration and power

loss. Motor and drive shafts must be parallel and

pulleys in line as shown in Figure 1.

CORRECT WRONG WRONG WRONG

Figure 1

V-Belt Drives

V-Belt Drive Installation

1. Remove the protective coating from the end of the

fan shaft using mineral spirits or another similar

solvent. Check to ensure that the shaft is free of

nicks and burrs.

2. Slide sheaves on shafts. Do not drive sheaves on

as this may result in bearing damage.

3. Align fan and motor sheaves with a

straight edge or string and tighten.

4. Place belts over sheaves. Do

not pry or force belts, as this

could result in damage to

the cords in the belts.

5. Adjust the tension until

the belts appear snug.

Run the unit for a few

minutes and allow the

belts to “set” properly.

6. With the fan off and disconnect locked out, adjust

the belt tension by moving the motor pivot plate.

When in operation, the tight side of the belts

should be in a straight line from sheave to sheave

with a slight bow on the slack side.

Aligning Sheaves with

a Straight Edge

Field Coating Touch-Up Procedure

for Scratched Areas

Standard coating and color is RAL 7023 Concrete

Grey. The procedure outlines the correct method for

repairing minor scratches in the coating.

1. Scuff affected area to be repaired using medium

sandpaper (provided) or medium Scotch Brite™

pad. Feather the edges.

2. Clean affected area to be touched up using an

alkaline based cleaner and rinse.

3. Apply Kem Kromik®primer using 1 inch foam

brush (provided). Follow technical data sheet

instructions.

4. Allow primer to dry a minimum of 2-1/2 hours

before top coating.

5. Apply topcoat with industrial enamel using 1 inch

foam brush (provided). Follow technical data

sheets instructions. Allow painted units to air-dry

and cure before putting into service. See Technical

Data sheets (included with kit) for detailed drying

and cure schedules at different temperatures.

To order additional coating repair kits please reference

part number HAZ2597 PNT FIELD REPAIR KIT,

RAL7023 CONCRETE GREY. Please contact factory

with your fan’s serial number for colors other than our

standard.

TOUCH-UP PAINT REPAIR KIT CONTENTS

• One pint of Kem Kromik®primer

- including a technical data sheet

• One pint of industrial enamel

- including a technical data sheet

• Four disposable foam brushes

• One sheet sandpaper

• Repair procedure details

NOTE

While the manufacturer provides heavy-duty, quality

products for marine environments, routine paint

touch-ups may be required in coastal regions where

salt or marine air could damage the coating. The

severe environment will accelerate the damage from

any scratches or chips and it is recommended that

those be repaired immediately.

Utility Fans10

Wheels must rotate freely and not rub on the inlet

cone. ModelXUEF(D)-BI (backward-inclined) wheels

overlap the inlet cone. There is a gap between

the inlet cone and wheel on model XUEF(D)-FC

(forward-inclined). Refer to the tables for the proper

dimension.

Radial Gap and Alignment

Efﬁcient fan performance can be maintained by

having the correct radial gap, overlap and wheel

alignment. These items should be checked after the

fan has been in operation for 24 hours and before

start-up when the unit has been disassembled.

Radial Gap: Adjust inlet cone position such that the

radial gap between the wheel cone and inlet cone is

evenly distributed around the wheel.

Radial gap is adjusted by loosening the inlet cone/

ring bolts and centering the cone/ring on the wheel.

If additional adjustment is required to maintain a

constant radial gap, loosening the bearing bolts and

centering the wheel is acceptable as a secondary

option.

Overlap: Overlap is adjusted by loosening the wheel

hub from the shaft and moving the wheel to the

desired position along the shaft.

The transition between the inlet cone and wheel

should be as shown; there is a smooth feel to the

proﬁle when moving from one component to the

other.

Method for Centering Wheel: On belt drive units,

centering can be accomplished by (a) loosening

the inlet cone bolts to move the inlet cone or by (b)

loosening the bearings in order to move the shaft.

Wheel and inlet cone overlap can be adjusted by

loosening the wheel hub set screws and moving the

wheel to the desired position. Tighten all fasteners

and set screws securely and realign drive pulleys

after adjustment.

Wheel Rotation

Rotation direction of the wheel is critical. Incorrect

rotation will result in reduced air performance,

increased motor loading and possible motor burnout.

Check wheel rotation by momentarily energizing the

unit and noting if rotation is in the same direction as

the airﬂow at the outlet and conforms to the rotation

decal afﬁxed to the unit.

Wheels as viewed from the drive side:

Wheel

Cone

Radial

Gap

Radial

Gap

Overlap

Straight

Edge

Straight

Edge

Inlet

Cone

Inlet

Cone

Backward-Inclined

Radial Gap, Overlap and Wheel Alignment

Radial Gap and Overlap Dimensions

XUEFD-100-BI A Overlap Overlap

Tolerance

inches (mm)

110 5

23⁄32 (145) 5⁄32 (4) 1⁄8(3)

113 5

27⁄32 (148) 7⁄32 (6) 1⁄8(3)

115 6

31⁄32 (177) 5⁄32 (4) 1⁄8(3)

116 7

1⁄2(191) 1⁄8(3) 1⁄8(3)

118 9 (229) 3⁄16 (5) 1⁄8(3)

XUEF-100-BI A Overlap Overlap

Tolerance

inches (mm)

104 4

3⁄4(121) 1⁄8(3) 1⁄16 (2)

106 4

3⁄4(121) 1⁄8(3) 1⁄16 (2)

108 4

3⁄4(121) 1⁄8(3) 1⁄16 (2)

110 4

3⁄4(121) 1⁄8(3) 1⁄16 (2)

113 5

3⁄4(146) 1⁄4(6) 1⁄8(3)

115 6

1⁄2(165) 1⁄2(13) 3⁄16 (5)

116 7

1⁄8(181) 1⁄2(13) 3⁄16 (5)

118 8

9⁄16 (217) 5⁄8(16) 1⁄4(6)

120 7

9⁄16 (192) 5⁄8(16) 1⁄4(6)

124 10

13⁄16 (259) 3⁄4(19) 3⁄8(10)

Radial Gap and Overlap Dimensions

XUEF-200 XUEF-300 XUEF-400 A Overlap Overlap

Tolerance

inches (mm)

206 306 4

15⁄16 (125) 3⁄8(10) 1⁄8(3)

207 307 4

15⁄16 (125) 3⁄8(10) 1⁄8(3)

208 308 4

15⁄16 (125) 3⁄8(10) 1⁄8(3)

210 310 4

15⁄16 (125) 3⁄8(10) 1⁄8(3)

407 1

7⁄16 (37) 2

15⁄32 (63) 1⁄8(3)

408 2

11⁄16 (68) 1

7⁄32 (31) 1⁄8(3)

409 3

11⁄16 (94) 7⁄32 (6) 1⁄8(3)

410 3

11⁄16 (94) 7⁄32 (6) 1⁄8(3)

212 312 412 4

1⁄4(108) 11⁄32 (9) 1⁄8(3)

213 313 413 4

11⁄16 (119) 3⁄8(10) 1⁄8(3)

215 315 415 5

3⁄16 (132) 7⁄16 (11) 1⁄8(3)

216 316 416 5

3⁄4(146) 7⁄16 (11) 1⁄8(3)

218 318 418 6

3⁄8(162) 15⁄32 (12) 1⁄8(3)

220 320 420 7 (178) 1⁄2(13) 3⁄16 (5)

222 322 422 7

13⁄16 (198) 17⁄32 (13) 3⁄16 (5)

324 424 8

5⁄8(219) 9⁄16 (14) 1⁄4(6)

327 427 9

7⁄16 (240) 11⁄16 (17) 1⁄4(6)

330 430 10

9⁄16 (268) 11⁄16 (17) 3⁄8(10)

333 433 11

7⁄16 (291) 15⁄16 (24) 3⁄8(10)

336 436 12

3⁄4(324) 15⁄16 (24) 3⁄8(10)

340 440 14

3⁄16 (360) 29⁄32 (23) 3⁄8(10)

344 444 15

9⁄16 (395) 1

1⁄8(29) 3⁄8(10)

349 449 17

1⁄8(435) 1

1⁄4(32) 1⁄2(13)

Gap Size

Wheel

Forward-Curved

Inlet

Cone

Gap Dimensions

XUEFD-100-FC Gap XUEF-100-FC Gap

106 3⁄8(10) 109 1⁄4(6)

107 3⁄8(10) 110 1⁄4(6)

109 1⁄2(13) 112 1⁄4(6)

110 1⁄2(13) 115 1⁄4(6)

118 1⁄4(6)

120 1⁄4(6)

122 1⁄4(6)

124 1⁄4(6)

Airﬂow

Backward Inclined

Airﬂow

Airfoil

Airﬂow

Forward Curved

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