Acme Engineering LQ Installation Manual

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FORM 613090
INSTALLATION & MAINTENANCE INSTRUCTIONS
Models EC, ECH, LQ, USC, USCH, and USQ
RECEIVING AND INSPECTION
Immediately upon receipt of a shipment, carefully inspect for damage and shortage. Turn propeller by hand to see that it turns freely and does not bind. If any damage and/or shortage is detected or suspected the carrier must be asked to conduct an inspection. The consignee’s representative should not accept shipment without a notation on the delivery 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 mandatory 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.
between 70°F and 105°F (wide temperature swings may cause condensation and "sweating" of metal parts). Windows should be covered to prevent temperature variations caused by sunlight. Provide thermometers and humidity indicators at several points and maintain the atmosphere at 40% relative humidity, or lower.
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 outdoors) may be required to maintain even temperatures inside the enclosure.
CAUTION! Provide fire extinguishers, or fire alarms, or emergency response communication to protect building and equipment against firedamage. Be sure that building andstorage practices meet all local, state and federal fire and safety codes.
The following fans or accessories must be stored indoors, in a clean dry atmosphere:
a. Propeller wall fans not in wall housings.
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 damage during storage. These suggestions are provided solely as a convenience to the user, who shall make his own decision as to whether to use any or all of them.
INDOOR: The ideal storage environment for 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 at
b. Any fan protected by a cardboard carton.
c. Motors dismounted from fans.
d. Spare wheels or propellers.
e. Belts, sheaves, bushings and other parts when not
mounted on fan.
f. Boxes, bags or cartons of hardware.
g. Curbs
h. 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 circulation and to permit periodic inspection.
Rotate wheels orpropellers by handto distribute bearinggrease over the entire bearing surfaces.
Store at least 3 ½” off the floor on wooden blocks covered with moisture proof paper or polyethylenesheathing. Provide 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 orditched to preventaccumulation of water. Fencing and lighting for security are desirable. 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 followingfans 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.
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 andoil. Do not destroy the continuity of the surfaces. Wipe clean with lint-free cloths and recoat surfaces evenly and thoroughly with Tectly 506 (Ashland Oil Company) or equal. For hard toreach internal surfaces or for occasional use, consider using Tectly 511M Rust Preventive or WD40 or equal.
All fans must be supported on wooden blocks or timbers above water or normal snow levels. Provide enough blocking 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,sunlight, 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 withplastic 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 performed. 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?
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REMOVING FROM STORAGE
As fans are removed from storage to be installed in their final location, they should be protected and maintained in similar fashion, until the fan equipment goes into operation.
INSTALLATION
1.
CAUTION! This unit has rotating parts and safety precautions should be exercised during installation, operation and maintenance.
2.
WARNING! Do not use in hazardous environments where the fan’s electrical system could provide ignition to combustible or flammable materials. Air surrounding the fan at all times must be free of flammable gases, vapors or liquids, combustible dust or ignitable fibers or flyings.
3. If the fan manufacturer prefab curb is used, a flange is provided for mounting the damper. Damper should be installed before setting the exhauster.
4. If a damper box is being used, assemble the box and mount in the curb before setting the ventilator. The damper may be installed at this time if desired. The damper should be fastened to the bottom of the damper box, curb flanges or nailing strips in the curb.
5. Larger units are shipped with hoods in two halves because of their size. See the instructions for the hood assembly on page 7.
WARNING! Until the hood is secured to the unit base it may present a hazard in the presence of winds.
It is recommended that the transport of the hood on the outside of the building and overthe roof, and the installation of the hood be performed when winds are calm.
6. Larger units are shipped with hoods in two halves because of their size. See the assembly instructions on page 7.
7. Before starting, check all fasteners for tightness; particularly in the propeller hub. Turn the propeller byhand to make sure it is in alignment with the orifice and the fan blades do not strike.
b. The hood must be secured and/or restrained when
removed from the fan for maintenance work.
3.
CAUTION! Before proceeding make sure electrical service to fan is locked in the “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.
8. All wiring should be in accordance with local ordinances and the National Electric code.
9.
WARNING! Check voltage at the fan to see if it corresponds with the motor nameplate. High or lowvoltage can seriously damage the motor. Extra care should be taken when wiring two speed motors since improper connections will damage motor and void motor warranty. On belt driven ventilators, leave enough slack in wiring to allow for motor movement when adjusting belt tension.
10. Apply power momentarily and compare the rotation of the impeller with the directional arrow on fan. In the case of three phase motors, the direction can be changed by interchanging any two of the three motor leads. In the case of single phase motors, the reversing instructions will appear on the wiring diagram on the motor wiring compartment cover, or on the side of the motor.
11. Using a minimum of eight (8) lag bolts, two (2) on each side near corners, securely fasten exhauster to curb. The fan should rest on the curb as level as possible.
12. After all installation and wiring has been completed, a final check should bemade to determinethat the hood fasteners are tightly secured.
4. Motor bearings are prelubricated. Consult information printed on the motor for lubrication instructions.
5. Impeller shaft bearings on belt driven units are prelubricated and do not require relubrication. Units with pillow block bearings have grease fittings and, under normal operating conditions, will need no required for 3 to 5 years. If relubrication is required, use a grease conforming to NLGI No. 2. CAUTION! Lubricating bearings with a high pressure gun can blow bearing seals and overfill the bearing with grease. This condition can result in excessive churning and overheating. For normal operating conditions it is standard practice to fill only 30% of the bearing void with grease. Do not over lubricate.
6. On belt driven units, check belt tension after the first 48 hours of operation and there after annually. Belt should depress its width when pressed firmly inward at midway point between the pulleys. Too much tension will damage the bearings. Belt should be tight enough to prevent slippage. When replacing worn belt, replace motor pulley if “shoulder” is worn in groove. WARNING! Do not operate at speeds higher than that cataloged for thisequipment. Do
not replace motor pulley with a larger diameter pulley. Do not replace the fan pulley withone smaller in diameter. The
pulley ratios are set so that themotor will not beoverloaded.
13.
CAUTION! Guards must be installed when fan is within reach of personnelor within eight (8) feet (2.5 m) ofworking level or when deemed advisable for safety.
MAINTENANCE
1. Under normal usage, no spare parts are recommended for one year of operation. Recommended spare parts are shown on page 4 and 5.
2.
WARNING! When the hood is removed for maintenance it may present a hazard in the presence of winds. It is therefore recommended that:
a. Maintenance work requiring the hoods to be removed
be performed in periods when winds are calm.
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7.
WARNING! When changing bearings, secure propeller with ropes or equivalent before loosening bearing set screws on fan shaft.
8. If impeller shaft bearings need replacement, replace with bearings comparable to original equipment. If duplex split pillow block bearings are used, install new bearings into neoprene rings, check correct position of propeller with orifice, position bearings in die-formed recess and tighten screws. Replace die-formed bearing cap and tighten four bolts.
NOTE: If lockingcollar type bearing is used,collar must first be positioned against inner race on bearing nearest the impeller and turned in direction of impeller rotation with drift pin and hammer until it locks. Locking collars must be on inboard (facing) sides of bearings. Secure bearing to shaft
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