Acme Engineering USR Installation Manual

Read and Save These Instructions

FORM 613098

INSTALLATION & MAINTENANCE INSTRUCTIONS

Models PRN and USR

RECEIVING AND INSPECTION

Immediately upon receipt of a shipment, carefully
inspect for damage and shortage. Turn the impeller 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 a
shipment without a notation on the delivery receipt
indicating items not delivered or the 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 any
damage to the carrier within 15 days. Failure to report
damage within the above time limit will result in
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 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 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 fire damage. Be sure that
building and storage 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.
b. Any fan is 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 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. 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 or ditched
to prevent accumulation 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 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 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
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 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?

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
thoroughly with Tectly 506 (Ashland Oil Company) or
equal. For hard to reach internal surfaces or for
occasional use, consider using Tectly 511M Rust
Preventive or WD40 or equal.

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, unless the unit is specifically built for
hazardous environments.

3. If the fan manufacturers prefab curb is used, a
flange is provided for mounting the damper.
Damper should be installed before setting
exhauster.

4. If damper box is being used, assemble box and
mount in curb before setting exhauster. Damper
may be installed at this time if desired. Damper
should be fastened to the bottom of the damper
box, curb flanges or nailing strips in curb.

5. Impeller Adjustment: Turn centrifugal impeller by
hand to make sure it rotates freely. If impeller hits
orifice, adjust by loosening set screw in impeller
hub and move impeller back on motor shaft.

6. 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. Remove the motor compartment cover (small
hood). 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 disconnect switch if used. WARNING!
The wiring post is sealed to the curb cap with a
large washer and sealing gasket. If the wiring post
is loosened, the seal may be broken, thereby
creating a possible water leak.

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
low voltage 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.

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