Acme Engineering LQ Installation Manual

Read and Save These Instructions

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?

Page 2

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.

Page 3

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