Acme Engineering USA Installation Manual

Read and Save These Instructions

FORM 613099

INSTALLATION & MAINTENANCE INSTRUCTIONS

Models HA, HDD, USA and USHD

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

CAUTION! This fan has rotating parts and safety precautions

must be exercised during its handling, installation, operation
and maintenance.

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.

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.

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.

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 that 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.

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.

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.

cover and loosen bolts holding bearings to fan frame.
This will allow centering of shaft and propeller in the fan
housing. To move the shaft in the bearings, remove bolts
and top half of bearing shell, then loosen set screws on
the bearings, and slide the shaft through the bearings.

If fan is equipped with pillow block bearings, loosen the
set screws holding bearings to shaft and slide the shaft
through the bearings. Tighten all set screws. (See
Maintenance section for bearing replacement).

5. If motor is not factory mounted, set motor on fan motor
base so that the shaft extends over the belt tube and fan
shaft. To attach motor to base use four bolts and nuts
which match holes in base. Before tightening, slide the
motor toward the belt tube to take out all slack in the
bolts. This insures the motor shaft is square with the fan.
Tighten the motor bolts.

6. Slide the motor pulley onto the motor shaft and insert the
square key into the keyway. Leave the pulley loose. Put
the belt(s) over the fan and motor sheaves.

In some cases, it may be helpful to remove the bearing
cover for access to the fan sheave. Align the belts and
set belt tension. Motor base jack screws and locknuts
are provided with each fan. They should be screwed into
the weld nuts on the motor base to set belt tension.

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. These fans can be operated only if the exhausted air and
the surrounding environment are always free of
flammable gases, vapors, or liquids, combustible dusts
or ignitable fibers or flyings. The fans cannot be used

in hazardous environments where the fans electrical
system could provide ignition to combustible or
flammable materials. The installation of the product

must comply with all local and national safety codes
including the National Electrical Code (NEC) and the
National Fire Protection Act (NFPA).

2.

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.

3. Remove fan from package and inspect within 15 days
after receipt. If damaged, report damage to carrier. Motor
and drives (motor pulley and belts) may be shipped
separate from the fan.

4. Before installing, check all fasteners for tightness;
particularly the propeller and shaft for torque
requirements see table on page 4.

Turn the propeller by hand to make sure it does not
strike the fan housing. If it does hit, remove bearing

The belt should depress its width when pressed firmly
inward at midpoint between the pulleys.

Tighten set screw on motor pulley. For torque
requirements see table on page 4.

7. Securely support unit and attach duct work. Attach any
options at this point.

8.

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

9. All wiring should be in accordance with local ordinances
and the National Electrical Code.

10. Before electrical connections are made, the supply
voltage, phase and ampere capacity must be checked
for compatibility with the fan motor. In addition, the
supply wiring must be properly fused and conform to
local and national electrical codes. WARNING!
Electrical connections that do not exactly match the
motor nameplate may cause fire.

Leave enough slack in the wiring to allow for vertical
movement of the motor as necessary.

11.

WARNING! Unguarded rotating parts will be exposed
during this procedure. Operate under power and
compare propeller rotation with directional arrow on the
fan.

Operation in reverse direction (opposite the rotation
arrow marked on the fan) will deliver some air but
opposite the airflow arrow marked on the fan.

In the case of three phase motors, the rotation can be
reversed by interchanging any two (2) of the three (3)
motor leads.

In the case of single phase motors, the reversing
instructions will appear on the wiring diagram in the
motor wiring compartment if reversing is possible.

12.

WARNING! Inlet, discharge and drive 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.

Page 2

OPTIONAL ACCESSORY

MOUNTING INSTRUCTIONS

GUARDS

1. Remove guard and bag of hardware from package.

2. Place guard on inlet or outlet flange.

3. Align eight holes on flange (six on size 12) with holes on
guard. Secure with supplied hardware.

DRIVE GUARD

1. Assemble and install drive guard according to
included instructions.

OPERATION

These fans must be operated in such a way that the
air surrounding their exterior is always free of
flammable gases, vapors, or liquids, combustible
dusts or ignitable fibers or flyings.

When exhausting air with the fan adequate intake
area for supply air must be proved at all times.

COMPANION FLANGES

1. Remove companion flanges and bag of hardware from
package.

2. Place one companion flange on each fan flange.

3. Align eight holes of fan flange (six on size 12) with holes
on companion flange. Secure with supplied hardware.

WEATHER COVER

1. Remove weather cover, weather cover rails attached to
the weather cover and bag of hardware from package.

2. Place weather cover rails along side motor base rails
with the (2) .45" diameter holes placed on the prop end
of the fan assembly (for sizes 16-60 only). Secure with
supplied bolts and nuts to motor base rails.

3. Place weather cover sides inside the weather cover rails.
On sizes 16” - 60” a notch in the weather cover allows for
the clearance of the lube fittings when optional
relubricated bearings are specified. The notched end of
the weather cover is placed on the end of the weather
cover rails with the (2) .45” diameter holes.

4. Secure with supplied bolts through weather cover rails to
j-nuts on cover.

MAINTENANCE

1.

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.

2. The set screws holding propeller and bearings to the
shaft must be maintained in accordance with the

SET SCREW TIGHTENING SCHEDULE and
PROCEDURE FOR TIGHTENING SET SCREWS
IN BEARINGS AND HUBS.

3. The inside of the belt well, the belts and surfaces of
bearing units, and the inside of the shaft/bearing
compartment must be checked for deposits on
maximum three month intervals. The deposits must
be removed if present.

All inner surfaces of the fan, including the propeller,
exposed to the exhaust air should be checked for
deposits on maximum three month intervals. The
deposits must be removed if present.

4. Propeller shaft bearings should be inspected on
maximum three month intervals.

MOUNTING BASE

1. Attach mounting base ends to fan flange with supplied
hardware. Motor location may be rotated in 45 degree
increments.

2. Attach mounting base sides to mounting base ends with
supplied hardware.

3. Check all fasteners for tightness.

Page 3

Propeller shaft bearings are prelubricated, sealed
and normally require no service. If a bearing is a
source of noise and/or excessive heat or is loosing
lubricant it must be replaced. It is recommended
that any bearing be replaced at a maximum five year
period.

Optional pillow block bearings with external
lubrication fittings under normal operation conditions
will need no relubrication for 5 years. For normal
operating conditions, use a grease conforming to
NLGI No. 2. CAUTION! Do Not over lubricate.
Lubricating bearings with a high pressure gun can
blow bearing seals.

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

6. On belt driven units, check belt tension after first 48
hours of operation and thereafter annually. Belt
should depress its width when pressed firmly inward
at midway point between the pulleys. Too much
tension will damage bearings. The belt should be
tight enough to prevent slippage. When replacing
worn belt, replace motor pulley if “shoulder” is worn
in groove. WARNING! Do not replace the motor
pulley with a larger diameter pulley. Do not replace
fan pulley with one smaller in diameter. The pulley