Larkin XUED Installation Manual

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Document 480956

Model XUED

Centrifugal Utility Fan

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 instructions could result in personal injury and/or property damage!

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.

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.

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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 Larkin Industries, Inc. Any physical damage to the unit after acceptance is not the responsibility of Larkin Industries, Inc.

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.

Storage

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 -

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 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.

The ideal environment for the storage of

(89 mm)

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. 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 lintfree 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.

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Table of Contents

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

Receiving, Unpacking, Storage, Inspection ...... 2

Installation

Discharge Positions ....................... 3

Effect of Installation on Performance .......... 3

Pre-Starting Checks

Wheels and Wheel Rotation ................ 4

Mounting for Severe Duty Installation .......... 5

Maintenance

Motor Maintenance ....................... 6

Wheel and Fastener Maintenance ............ 6

Parts List ................................ 6

Troubleshooting ........................... 7

Effect of Installation on 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, increased sound levels and structural failure of the fan wheel. Free discharge or turbulent ﬂow in the discharge ductwork will also result in system effect losses.

These examples show the system layout and inlet and discharge conﬁgurations which can affect fan performance.

7o MAX.

Installation

Inspect the unit for any damage and report it to the shipper immediately. Also, check to see that all accessory items are accounted for.

Move the fan to the desired location and 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, it can be rotated to other discharge positions in the ﬁeld if necessary. Removal of the housing bolts allows the discharge to be rotated to the clockwise positions below. For TAD, BD and BAD discharge positions, a portion of the frame angle must be removed.

Clockwise rotation shown. Counterclockwise discharge positions are a mirror image of those shown. Fan rotation is always speciﬁed from the drive side of the housing.

Discharge Positions

POOR

Turning

Varies

FAIR

POOR

FAIR

POOR

One

Impeller

Dia.

GOOD

FAIR

Should be at least 1/2 Impeller Dia.

GOOD

Not Greater than

Including Angle

FAIR

CW BH CW BAU CW TAUCW UB

CW TH CW TAD

CW DB

CW BAD

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Pre-Starting Checks

Backward Inclined

Forward Curved

Airﬂow

Backward Inclined Forward Curved

Airﬂow

These are the original drawings on the Illustrator ﬁle when I opened it. The IOM had the wheel layered on top of the scroll. I will incorporate the wheel on the scroll without creating an additional layer in the InDesign ﬁle.

Airﬂow

Airfoil

Gap

Wheel

Radial Gap

Overlap

Wheel

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

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.

Wheels

Wheels must rotate freely and not rub on the inlet venturi. Model XUED wheels overlap the inlet venturi as shown in Figure 2. Refer to the Approximate Wheel Clearance Dimensions table for the proper dimensions for wheel overlap and radial gap.

Figure 2

Wheel Rotation

Rotation direction of the wheel is critical and 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:

Backward Inclined

Airﬂow

Approximate Wheel Clearance Dimensions

Radial

Gap

(4)

⁄32

(4)

⁄32

(4)

⁄32

(4)

⁄32

(4)

⁄32

(4)

⁄32

(4)

⁄32

(10)

(11)

(13)

(16)

Overlap

Tolerance

inches (mm)

(6)

⁄4

(6)

⁄4

(6)

⁄4

(6)

⁄4

(6)

⁄4

(6)

⁄4

(10)

⁄8

10 13 15 16 18

Overlap

⁄8

⁄16

⁄2

⁄8

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XUED

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Mounting for Severe Duty Installation

Isolator Anchoring

Two fasteners per equipment support.

1/2 inch (13 mm) - 13 Bolt

1/2 inch (13 mm) - 13 Bolt (Four Locations)

(Four Locations)

Isolator Anchoring

Equipment Support Anchoring

One fastener per isolator anchoring. Four isolators required.

5/8 inch (16 mm) Lag Screw

5/8 inch (16 mm) Lag Screw Min. 1-1/2 inch (38 mm) Thread Engagement

Min. 1-1/2 inch (38 mm) Thread Engagement (Two per Equipment Support)

(Two per Equipment Support)

18 Ga. Galvanized G90 with Wood Nailer

Three Supports Required for Sizes 20 and larger

Equipment Support Anchoring

Min. 5 inch

(127 mm)

3/8 inch (10 mm) S.S. Hilti Kwik Bolt

3/8 inch (10 mm) S.S. Hilti Kwik Bolt Three Expansion Anchors

Three Expansion Anchors Min. 2-1/2 inch (64 mm) Engagement

Min. 2-1/2 inch (64 mm) Engagement

2000 Min. PSI Concrete

Concrete

Deck Anchoring

5/16 inch (8 mm) Self-D rilling Screw Min. 1/2 inch (13 mm) of Threads Through

Steel

Deck Anchoring

Roof Truss 1/8 inch (3 mm) Thick or 12 Gauge Min.

Wood Timber Min. 4 inch (102 mm) Min. G = 0.42

Timber Anchoring

7/16 inch (11 mm) Lag Bolt Min. 3-1/4 inch (83 mm) Thread Engagement

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Maintenance

Parts List

Motor Maintenance

Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to exterior surfaces only. Removing dust and grease buildup on the motor housing assures proper motor cooling. Use caution and do not allow water or solvents to enter the motor or bearings. Under no circumstances should motors or bearings be sprayed with steam, water or solvents.

Many fractional horsepower motors are permanently lubricated for life and require no further lubrication. Motors supplied with grease ﬁttings should be greased in accordance with the manufacturer’s recommendations.

Wheel and Fastener Maintenance

Wheels require very little attention when exhausting clean air, however, wheels exhausting dirty air require frequent cleaning to assure smooth and safe operation.

All fasteners, including set screws in the bearing collars, should be checked for tightness each time maintenance checks are performed.

A proper maintenance program will help preserve the performance and reliability designed into the fan.

Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information will assist Larkin Industries, Inc. and the factory in providing service and replacement parts. Before taking any corrective action, make certain unit is not capable of operation during repairs.

Available Replacement Parts

1. Scroll housing

2. Drive frame - base angle

3. Intake support panel

4. Wheel (specify rotation)

5. Drive frame assembly

6. Motor

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Troubleshooting

WARNING

Before taking any corrective action, make certain unit is not capable of operation during repairs.

PROBLEM CAUSE CORRECTIVE ACTION

Excessive Noise

Low CFM

High CFM

Static Pressure Wrong

High Horsepower

Fan Doesn’t Operate

* Always check motor amps and compare to nameplate rating. Excessive fan speed may overload the motor

and result in burnout.

Wheel Rubbing Inlet

Wheel Unbalance

Fan Check wheel for correct rotation. Increase fan speed.*

Duct System See page 3.

Fan Resize ductwork. Access door, ﬁlters, grills not installed.

Duct System

Duct system has more or less restriction than anticipated

Fan Check rotation of wheel. Reduce fan speed.

Duct System

Electrical Supply

Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars on shaft.

Clean all dirt off wheel. Check wheel balance, rebalance in place if necessary.

Change obstructions in system. Use correction factor to adjust for temperature/altitude. Resize ductwork. Clean ﬁlters/coils. Change fan speed.*

Check rotation of wheel. Adjust fan speed.

Resize ductwork. Check proper operation of face and bypass dampers. Check ﬁlters and access doors.

Check fuses/circuit breakers. Check for switches off. Check for correct supply voltage.

Avant d’entreprendre toute action corrective, s’assurer que l’appareil ne pourra pas fonctionner durant les réparations.

AVERTISSEMENT

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Larkin Industries, Inc. 114 David Green Rd., Birmingham, AL 35244 Phone: 1.800.322.4036 Fax: 1.205.987.0583 Email: Sales@larkinhoods.com