Acme Engineering UBH Installation Manual

Read and Save These Instructions

FORM 613094

INSTALLATION & MAINTENANCE INSTRUCTIONS

Models UD, USD, UBH and USBH

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 orsuspected, 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 whichwas
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 abovetime limit willresult
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 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.

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! The fan/duct system can be operated only
in the steady flow regime to avoid serious damage to its
parts due to the pressure pulsations in the system.

3.

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.

4.

WARNING! Do not use in hazardous environment
where the fan's electrical systemcould provide ignition to
combustible or flammable materials, unless unit is
specifically built for hazardous environment.

5. Before starting, check all fasteners for tightness;
particularly in the propeller hub. Turn the propeller by
hand to make sure it is in alignment with the orifice and
fan blades do not strike.

Table 1.

Required Openings in the Roof

for the UD and UBH Fans

Req'd Roof Opening in. x in.

UD Fans

UD18 26.50 x 26.50
UD21 29.50 x 29.50
UD24 33.50 x 33.50
UD30 41.50 x 41.50
UD36 48.00 x 48.00
UD42 55.50 x 55.50
UD48 59.50 x 59.50

UBH Fans

UBH16 22.50 x 22.50
UBH18 26.50 x 26.50
UBH21 33.50 x 33.50
UBH30 41.50 x 41.50
UBH36 48.00 x 48.00
UBH42 55.50 x 55.50
UBH48 59.50 x 59.50
UBH54 62.50 x 62.50
UBH60 70.50 x 70.50

6. Units should be checked for pulley alignment and belt
tension. Belt should depress its width when pressed
firmly inward at midway point between the pulleys.

7.

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

8. All wiring should be in accordance with local ordinances
and the National Electrical 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. Leave enough slack in wiringto 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 in 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 fan to curb. Fasten all
bolts securely. The fan should rest on the curb as level
as possible.

12. Special units (identified by the lettersUF or SE at the end
of the fan model number) to comply with FIA or IRI
requirements must be installed in accordance with their
Procedure Manual on Heat and Smoke Venting. Electric
power feeders to the fans should be independent of
those for the general building area to permit
disconnecting the power to the building without affecting
power to the fans. The feeders should be run outside of
the fire area or, if inside wiring is necessary, it must be
installed in accordance with Section 230-40, Exception
#2 of the National Electrical Code, NFPA No. 70-1987.
The emergency manual control center should be located
outside the protected area.

13. The opening in the roof on which the fan unit is mounted
has to match the dimensions specified for the fan unit.
Only a shutter, a louver or an inlet guard can be installed
in the opening. No other objects can be located in the

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