Acme Engineering PDU-RF Installation Manual

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INSTALLATION & MAINTENANCE INSTRUCTIONS

PDU-RF, PDU-RG, USDU-RF, USDU-RG

RECEIVING AND INSPECTION

Immediately upon receipt of a shipment, carefully inspect for damage and shortage. Turn impeller by hand to see that it turns freely and does not bind. Ifany damage and/or short age is detected or suspected, the carrier must be asked to conduct an inspection. The consignees representative should not accept shipment without a notation on the deliv ery receipt indicating items not delivered or apparent extent of damage.

When a shipment is opened and damage is found which was not evident externally (concealed damage), it is man datory that the consignee request an immediate inspection by the carrier. Report damage to the carrier within 15 days. Failure to report damage within the above time limit will cause rejection of a claim.

HANDLING

When handling fans and their accessories, always use equipment and methods that will not cause damage. Fans should be lifted using slings and padding or spreaders to avoid damage.

CAUTION! Always make sure that all lifting and handling equipment and techniques conform to current safety standards.

Avoid lifting fans in a way that will bend or distort fan parts. Never pass slings or timbers through the orifices of fan.

CAUTION! Do not lift by the fan hood. Fans with special coatings or paints must be protected in handling to prevent damage.

STORAGE

Fans are protected against damage during shipment. If they cannot be installed and put into operation immediately upon receipt certain precautions are necessary to prevent deterioration during storage. Responsibility for integrity of fans and accessories during storage must be assumed by the user. The manufacturer will not be responsible for dam age during storage. These suggestions are provided solely as a convenience to the user, who shall make his own deci sion as to whether to use any or all of them.

INDOOR: The ideal storage environment for fans and ac cessories is indoors, above grade, in a low humidity atmo sphere which is sealed to prevent the entry of blowing dust, rain, or snow. Temperatures should be evenly maintained at between 70°F and 105°F (wide temperature swings may cause condensation and "sweating" of metal parts). Win dows should be covered to prevent temperature variations caused by sunlight. Provide thermometers and humidity in dicators at several points and maintain the atmosphere at 40% relative humidity, or lower.

Form 613113

It may be necessary to use trays of renewable desiccant or portable dehumidifier to remove moisture from the air in the storage enclosure.

Thermostatically controlled portable heaters (vented to out doors) may be required to maintain even temperatures in side the enclosure.

CAUTION! Provide fire extinguishers, or fire alarms, or

emergency response communication to protect building and equipment against fire damage. Be sure that building and storage practices meet all local, state and federal fire

and safety codes.

The following fans oraccessories must be stored indoors,in a clean dry atmosphere:

a. Any fan that is protected by a cardboard carton.

b. Spare wheels or propellers.

c. Boxes, bags or cartons of hardware.

d. Curbs

e. Dampers

Remove any accumulations of dirt, water, ice or snow and wipe dry before moving indoor storage. Allow cold parts to reach room temperature to avoid “sweating” of metal parts. Open boxes or cartons. Remove any accumulated moisture; if necessary use portable electric heaters to dry parts and packages. Leave coverings loose to permit air circula tion and to permit periodic inspection.

Rotate wheels or propellers by hand to distribute bearing grease over the entire bearing surfaces.

Store at least 3 ½” off the floor on wooden blocks covered with moisture proof paper or polyethylene sheathing. Pro vide aisles between parts and along all walls, to permit air circulation and space for inspection.

OUTDOOR: Fans designed for outdoor use may be stored outdoors, if absolutely necessary. The storage area should

be reasonably level and drained or ditched to prevent accu

mulation of water. Fencing and lighting for security are de

sirable. Roads or aisles for portable cranes and hauling

equipment are needed. Consider the use of drift fencing to minimize accumulation of blowing snow or dirt.

The following fans may be stored outdoors, if dry indoor

storage space is not available:

a. Fans intended for outdoor use that are crated in

wood.

b. Wall fans installed in wall housings.

All fans must be supported on wooden blocks or timbers above water or normal snow levels. Provide enough block ing to prevent settling into soft ground. Fans should be set in place using the directional arrow markings on the crate as a guide.

Locate pieces far enough apart to permit air circulation,sun light, and space for periodic inspection. Place all parts on their supports so that rain water will run off, or to minimize water accumulation. Do not cover parts with plastic film or tarps-these cause condensation of moisture from the air passing through heating and cooling cycles.

Fan wheels and propellers should be blocked to prevent spinning caused by strong winds.

INSPECTION AND MAINTENANCE DURING STORAGE

Inspect fans and accessories at least once per month, while in storage. Log results of inspection and maintenance per formed. A typical log entry should include the following:

a. Date

b. Inspector’s Name

c. Name of Fan

d. Location

e. Condition of Paint or Coating

f. Is moisture present?

g. Is dirt accumulated?

h. Corrective steps taken?

If moisture or dirt accumulations are found on parts, the source should be located and eliminated. Fans should be rotated at each inspection by hand ten to fifteen revolutions to redistribute the motor and bearing lubricant.

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. The most critical items are pulleys, shafts and bearing locking collars. At the first sign of rusting on any of the above parts, remove the original rust preventive coating with petroleum solvent and clean lint-free cloths. Polish any remaining rust from surfaces with crocus cloth or fine emery paper and oil. Do not destroy the continuity of the surfaces. Wipe clean with lint-free cloths and recoat surfaces evenly and thor oughly with Tectly 506(Ashland Oil Company) or equal. For hard to reach internal surfaces or for occasional use, con sider using Tectly 511MRust Preventive or WD40 or equal.

REMOVING FROM STORAGE

As fans are removed from storage to be installed in their fi nal location, they should be protected and maintained in similar fashion, until thefan equipment goes into operation.

INSTALLATION

CAUTION! This unit has rotating parts and safety precautions should be exercised during installation, operation and maintenance.

WARNING! If gases, other than clean air, are to be exhausted using the fan, then the user bears the responsibility of determining that the fan is appropriate and safe for the application.

WARNING! Do not use in hazardous environments where the fan’s electrical system could provide ignition

to combustible or flammable materials, unless unit is built specifically for the environment.

4. COMMERCIAL KITCHEN EXHAUST APPLICATIONS

Ventilators should be installed in accordance with the requirements of the National Fire Protection Association Bulletin NFPA96 “Vapor Removal From Cooking Equipment” taking specific note of the following: (a) Ducts terminating into the base of an up-discharge

exhaust fan must be constructed of carbon steel not less than 16MSG (67.47mm) and extend a minimum

of 18" (457 mm) above the roof surface.

(b) Air velocity through the duct not less than 1500 FPM

(7.620 m/s).

©) A minimum of 40" (1016 mm) clearance be main

tained between the exhaust discharge and the roof surface. (To comply, size 80 to 135 require 24" [610 mm] roof curb. Size 150 to 200 require 18" [457 mm] roof curb.)

5. FAN INSTALLATION:

ROOF MOUNT: Roof exhausters should be mounted on a roof curb suitable for the purpose, either field fabricated or prefab type. (Prefab type available as an accessory at extra cost.) The fan should rest on the curb as level as possible. When curb is not level (slightly pitched on flat roofs) the down spout drain fitting should be located on lowest side of curb. Securely fasten exhauster to curb using a minimum of 4 lag bolts - one centered each side.

CAUTION! Guards must be installed when fan is within reach of personnel or within eight (8) feet (2.5 m) of working level or when deemed advisable for safety.

7. IMPELLER-ORIFICE ADJUSTMENT: Turn centrifugal impeller by hand to make sure it rotates freely. If impeller hits inlet orifice, adjust as follows: Loosen four (4) nuts inside motor enclosure. Adjust motor laterally to equalize clearance on all sides of impeller. Tighten four (4) nuts.

8. ELECTRICAL CAUTION: Before proceeding, make

sure electrical service to fan is locked in “OFF” position. Run wires through the internal wiring post to the motor,

to safety disconnect switch if used. (Restaurant exhaust fans have wires through breather tube.)

9. All wiring should be in accordance with local ordinances

and the National Electric Code.

10.

WARNING! Check voltage at the fan to see if it corresponds with the motor nameplate. High or low voltage can seriously damage the motor. Extra care should be taken when wiring to two or three speed motors since improper connections will damage motor and void motor warranty.

11. Apply power momentarily and compare the rotation of the impeller with the directional arrow on fan. WARNING! Do not operate at speeds higher than shown in catalog for this equipment. Operation in the wrong direction willdeliver air but will overload the motor to the extent of blowing fuses, or overload protection and could seriously damage the motor. In the case of three phase motors, the direction can be changed by

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interchanging any two of the three motor leads. In the case of single phase motors, the reversing instructions will appear on the wiring diagram in the motor wiring compartment or on the motor.

12.GREASE TROUGHS AND CURB HINGES are available as optional accessories. Installation instructions are shipped with the accessories.

MAINTENANCE

1. Under normal usage, no spare parts are expected to be required for one year of operation. Recommended spare parts are shown on pages 4 and 5.

CAUTION: Before proceeding, make sure electrical service to fan is locked in “OFF” position.

WINDMILLING: Even when the power supply is locked out, fans may cause injury or damage if the impeller is subject to “windmilling” which is the turning of the impeller and drive components due to a draft in the system. To guard against this hazard, the impeller should be secured to physically restrict rotational movement.

3. Motor bearings are prelubricated. Consult information printed on motor for lubrication instructions.

4.REGULAR MAINTENANCE: Determined by the condition of the air passing through the fan, regularly scheduled inspection of all fan parts establishes a good maintenance routine. When the air is clean, maintenance can beas infrequent as once a year. When air is contaminated with grease vapors from cooking operations, maintenance may be required as often as once a week. Regular maintenance should include inspection and cleaning of all fan parts to remove all grease and other foreign particles from the entire wheel surface including blades and front and back plates. WARNING! Care must be taken when cleaning the wheel to remove grease and other foreign particles. Damage to the wheel can occur if it is hit or if pressure is applied causing the wheel to be distorted. Either case can cause serious vibration and damage to the fan.

SET SCREW TIGHTENING SCHEDULE

1. Before initial operation of the fan, tighten set screws according to the procedure outlined below.

2. After 500 operating hours or three months, whichever comes first, tighten set screws to the full recommended torque.

3. At least once a year, tighten set screws to the full recommended torque.

PROCEDURE FOR TIGHTENING SET SCREWS IN

BEARINGS AND HUBS

One Set Screw Application

Using a torque wrench, tighten the set screw to the torque recommended in Table 1.

Two Set Screw Application

1. Using a torque wrench, tighten one set screw to half of the torque recommended in Table 1.

2. Tighten the second set screw to the full recommended torque.

3. Tighten the first set screw to the full recommended torque.

Table 1. Recommended Tightening Torque

for Set Screws

Set Screw Diameter Torque (in-lbs)

#10 35

1/4 80

5/16 126

3/8 240

7/16 384

1/2 744

9/16 1080

5/8 1500 3/4 2580 7/8 3600

1 5400

VARIABLE FREQUENCY

DRIVES AND MOTORS

There are occasions when a Variable Frequency Drive (VFD) will cause poor motor performance and possible damage. To avoid these problems, the Company recom mends the following:

1. Select compatible motor and VFD converter; if

possible, the motor and the converter should be from the same manufacturer or at least the con

verter selected should be recommended by the motor manufacturer.

2. A motor shaft grounding system should be used to prevent motor bearing damage from eddy cur

rents.

NOTE: The Company will not honor motor warranty claims if the customer fails to follow these recommendations.

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Sizes 80-135

NOTES

Fan shown is standard unit. Units built for restaurantservice do not have internal wiring post (No. 7) or birdscreen (No. 2). Unit shown is RG model with UL762 and externally mounted dis

connect switch. RF units (UL705) have disconnect switch mounted internally.

PARTS LIST LEGEND

No. Description Qty. No. Description Qty.

1 Motor Enclosure Cover* 1 8 Windband Assembly 1 2 Birdscreen* 1 9 Breather Tube Cover 1 3 Motor 1 10 Disconnect Switch 1 4 Motor Enclosure 1 11 Support Bracket 4 5 Breather Tube 1 12 Quick Release Latch 1 6 Wiring Post (standard) 1 13 Motor Reinforcing Plate 1 7 Wiring Post (optional) 1 14 Impeller* 1

* Recommended spare parts

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Sizes 150-200

NOTES

Fan shown is standard unit. Unitsbuilt for restaurant service do not have internal wiring post (No. 7) or birdscreen (No. 2). Unit shown is RG model with UL 762 and externally mounted dis

connect switch. RF units (UL705) have disconnect switch mounted internally.

PARTS LIST LEGEND

No. Description Qty. No. Description Qty.

*Recommended spare parts

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TERMS AND CONDITIONS OF SALE

ACCEPTANCE All orders and sales are subject to

written approval and acceptance by an executive offi cer of Acme Engineering & Manufacturing Corporation at Muskogee, Oklahoma, (the "Company") and are not binding on the Company until so approved.

DELIVERY All shipping and delivery dates are esti mated only. No delays in delivery will subject the Company to any costs, damages or fees for late deliv ery. Delivery of the products herein specified shall be made F.O.B. point of shipment, unless otherwise stated. The Company shall not be liable for delay due to causes beyond its reasonable control, such as Acts of God, acts of the purchaser, acts of civil or military authorities, priorities, fires, strikes, floods, epidemics, war, riots, delays in transportation, car shortages, and inability, due to reasons beyond its reasonable control, to obtain necessary labor, material, or manufacturing facilities. In the event of such a delay, the date of deliv ery shall be extended for a period equal to the time lost by reason of the delay.

TERMS OF PAYMENT If, in the judgment of the Com pany, the financial condition of the purchaser at any time does not justify continuation of manufacture or shipment on the terms of payment specified, the Com pany may require full or partial payment in advance.

Pro rata payments shall become due as shipments are made. Each shipment or delivery shall constitute a separate sale, and the default of any shipment or deliv ery shall constitute a separate sale, and the default of any shipment or delivery shall not vitiate the contract as to other shipments or deliveries.

SALES AND SIMILAR TAXES The Company’s prices do not include sales, use, excise, or similar taxes. Consequently, in addition to the price specified herein, the amount of any present or future sales, use, excise, or other similar tax applicable to the sale of the product herein shall be paid by the Purchaser, or in lieu thereof

WARNING Acme products are designed and manufactured to provide reliable performance but they are not guaranteed to be 100% free of defects. Even reliable products will experience occasional failures and this possibility should be recognized by the Purchaser and all End Users. If these products are used in a life support ventilation system where failure could result in loss or injury, the Purchaser and all End Users should provide adequate back-up ventilation, supplementary natural ventilation or failure alarm sys tem, or acknowledge willingness to accept the risk of such loss or injury.

WARNING DO NOT use in HAZARDOUS ENVIRONMENTS where fan’s electrical system could provide ignition to combustible or flammable materials unless unit is specifi cally built for hazardous environments. Comply with all local and national safety codes including the National Electrical Code (NEC) and National Fire Protection Act (NFPA).

CAUTION Guards must be installed when fan is within reach of personnel or within eight (8) feet (2.5 m) of working level or when deemed advisable for safety.

DISCLAIMER The Company has made a diligent effort to illustrate and describe the products accurately in all Company literature; however such illustrations and descriptions

are for the sole purpose of identification and do not express or imply any warranty.

the Purchaser shall provide the Company with a tax

exemption certificate acceptable to the taxing authori ties.

CANCELLATION Any contract resulting from the Pur chaser’s order may be canceled by the Purchaser only

by negotiations and upon payments of reasonable can cellation charges which will take into account expenses

already incurred and commitments made by the Com pany.

DESIGN CHANGES The Company reserves the right to make changes in design, improvements and addi tions in and to its products any time without imposing any liability or obligations to itself to apply or install the same in any product manufactured by it.

TITLE The title and right of possession of the products sold herein shall remain with the Company and such

products shall remain personal property until all

payments herein (including deferred payments whether evidenced by notes or otherwise) shall have been made in full in cash and the Purchaser agrees to do all

acts necessary to perfect and maintain such right and title in the Company.

PRICE ADJUSTMENTS Prices are subject to change

upon notice by the Company. Prices on existing or ders are subject to surcharges in the event of cost in creases of metals and transportation. All complete component accessory material manufactured by others

and furnished with the Company’s products such as motors, drives, vibration equipment, controls or other completely assembled component structures, are sub ject to adjustment to the price at time of shipment re gardless of the date of original order entry.

SAFETY ACCESSORIES The Company manufactures products designed to serve multiple applications and offers a wide range of safety equipment, including guards and other devices, as may be required to meet

customer specifications. Without exception, the Com

pany recommends that all orders include applicable

safety devices. Products ordered without applicable safety devices is clearly the responsibility of the Pur

chaser. Further, the Purchaser warrants that it has de

termined and acquired any and all safety devices re

quired for products sold by the Company. Weather

covers and guards for motor and V-belt drives, cou

plings, shafts and bearings, along with inlet and outlet

screens, are optional accessories noted in the price list.

GOVERNING LAW The rights, obligations and reme

dies of Purchaser and the Company, the interpretation of these terms and conditions and the sale of products by the Company shall be governed by Oklahoma law, without regard to any principles of conflict of laws.

ARBITRATION Any dispute arising under or in con nection with these terms and conditions or the sale of products shall be settled by binding arbitration admin istered by the American Arbitration Association under its Commercial Arbitration Rules, and judgment on the award rendered by the arbitrator may be entered in any court having jurisdiction thereof. The dispute shall

be resolved by one neutral arbitrator who shall have no

affiliation with either Purchaser or the Company and shall be selected by the American Arbitration Associa tion office in Dallas, Texas. The arbitration proceed ings shall be held in Muskogee, Oklahoma.

APPLICABLE DOCUMENTS The agreement be

tween the Company and the Purchaser relating to the

products includes these terms and conditions of sale, any applicable installation and maintenance instruc tions provided by the Company and any terms appear ing on the Company’s quotation, sales order acknowl edgment and invoice.

LIMITED WARRANTY

WARRANTY AND DISCLAIMER: the Company ex-

tends this limited warranty to the original purchaser and warrants that products supplied by the Company, shall be free from original defects in workmanship and materials for two years from date of shipment (except for the warranty periods noted for products listed be low), provided same have been properly handled, stored, installed, serviced, maintained and operated. This warranty shall not apply to products which have been altered or repaired without the Company’s ex press authorization, or altered or repaired in any way so as, in the Company’s judgment, to affect its perfor mance or reliability, nor which have been improperly installed or subjected to misuse, negligence, or acci dent, or incorrectly used in combination with other sub stances. The Purchaser assumes all risks and liability for results of use of all products.

Evaporative cooling pads are warranted to be free of defects in materials and workmanship for a period of two years from date of shipment provided same have been properly handled, stored, installed, serviced, maintained and operated; and further, not subjected to excessive heat, corrosive agents or chemicals, or me chanical abuse that may cause tearing, crushing or un due deterioration, nor used on a system or in a manner other than that for which it was designed as explained in the product literature.

The following products are warranted to be free of de fects in materials and workmanship for the periods shown from date of shipment: Acme’s exclusive du plex split pillow block bearings and shaft five years, belts one year, Polyethylene tubing 90 days, AIR40 Heater warranty one year, AIR40 Emitter warranty three years and DDP fan lifetime warranty on its pro peller, cone, and housing.

LIMITATION OF REMEDY AND DAMAGES: All claims under this warranty must be made in writing and delivered to P. O. Box 978, Muskogee, Oklahoma, 74402, within 15 days after discovery of the defect and prior to the expiration of two years from the date of shipment by the Company of the product claimed de fective, and Purchaser shall be barred from any

ACME ENGINEERING AND

MANUFACTURING CORPORATION

P.O. Box 978

Muskogee, Oklahoma 74402

Telephone 918/682-7791

Fax 918/682-0134

www.acmefan.com

Member Air Movement and Control Association International, Inc. February 2008 613113

remedy if Purchaser fails to make such claim within such period.

Within 30 days after receipt of a timely claim, the Company shall have the option either to inspect the product while in Purchaser's possession or to request Pur

chaser to return the product to the Company at Pur

chaser's expense for inspection by the Company. The Company shall replace, or at its option repair, free of charge, any product it determines to be defective, and

it shall ship the repaired or replacement product to

Purchaser F.O.B. point of shipment; provided, how

ever, if circumstances are such as in the Company’s

judgment to prohibit repair or replacement to remedy

the warranted defects, the Purchaser's sole and exclu

sive remedy shall be a refund to the Purchaser of any

part of the invoice price, paid to the Company, for the defective product or part.

The Company is not responsible for the cost of re moval of the defective product or part, damages due to removal, or any expenses incurred in shipping the product or part to or from the Company’s plant, or the installation of the repaired or replaced product or part.

The warranties set forth above do not apply to any

components, accessories, parts or attachments manu factured by other manufacturers; such being subject to the manufacturer’s warranty, if any. To the extent not prohibited by the manufacturer’s warranty, the Com

pany shall pass through to Purchaser such manufac

turer’s warranty.

THE COMPANY’S WARRANTY IS IN LIEU OF ALL

OTHER WARRANTIES, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE, INCLUDING

WITHOUT LIMITATION THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PAR TICULAR PURPOSE, WHICH ARE HEREBY EX PRESSLY DISCLAIMED AND WAIVED. THIS WAR RANTY CONSTITUTES THE COMPANY’S SOLE AND EXCLUSIVE WARRANTY FOR DEFECTIVE GOODS AND PURCHASER’S SOLE AND EXCLU SIVE REMEDY FOR DEFECTIVE PRODUCTS.

No employee, agent, dealer, or other person is authorized to give any warranties on behalf of the Company or to assume for the Company any other liability in connection with any of its products except in writing and signed by an officer of the Company.

REPLACEMENT PARTS If replacement parts are ordered, purchaser warrants that the original com ponents in which these replacement parts will be placed are in satisfactory working condition, and

when said replacement parts are installed, the resultant installation will operate in a safe manner, at speeds and temperatures for which the original product was purchased.

TECHNICAL ADVICE AND RECOMMENDATIONS,

DISCLAIMER: Notwithstanding any past practice or dealings or any custom of the trade, sales shall not in clude the furnishing of technical advice or assistance or system design. Any such assistance shall be at the Company’s sole option and may be subject to addi

tional charge.

The Company assumes no obligation or liability on ac

count of any recommendations, opinions or advice as to the choice, installation or use of products. Any such recommendations, opinions or advice are given and shall be accepted at Purchaser's and End User's risk and shall not constitute any warranty or guarantee of

such products or their performance.

LIMITATION OF LIABILITY The cumulative liability of the Company to the Purchaser and any other persons for all claims in any way relating to or arising out of the products, including, but not limited to, any cause of ac tion sounding in contract, tort, or strict liability, shall not

exceed the total amount of the purchase price paid for

those products which are the subject of any such claim. This limitation of liability is intended to apply

without regard to whether other provisions of this

agreement have been breached or have proven inef

fective even if the Company has been advised of the possibility of such claims or demands. In no event shall the Company be liable to the Purchaser or any other person for any loss of profits or any incidental, special, exemplary, or consequential damages for any claims or demands brought by the Purchaser or such

other persons.

INDEMNITY The Company’s maximum liability to Pur

chaser and to any end user is as set forth above. The Company makes no warranty to anyone for any prod

ucts not manufactured by the Company and shall have

no liability for any use or installation of any products (whether manufactured by the Company or other man ufacturers) not specifically authorized by this sale. Purchaser acknowledges various warnings by the Company regarding the products and its installation and use. If the Company incurs any claims, lawsuits, settlements, or expenses (including attorney fees) for any loss, injury, death or property damage including, but not limited to, claims arising out of the Purchaser’s

or any end user’s installation or use of the products, the Purchaser shall indemnify and hold the Company harmless.

Acme Engineering PDU-RF Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual