Acme Engineering PDU-RF Installation Manual
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INSTALLATION & MAINTENANCE INSTRUCTIONS
PDU-RF, PDU-RG, USDU-RF, USDU-RG
RECEIVING AND INSPECTION
Immediately upon receipt of a shipment, carefully inspect
for damage and shortage. Turn impeller by hand to see that
it turns freely and does not bind. Ifany damage and/or short
age is detected or suspected, the carrier must be asked to
conduct an inspection. The consignees representative
should not accept shipment without a notation on the deliv
ery 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 man
datory 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.
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 dam
age during storage. These suggestions are provided solely
as a convenience to the user, who shall make his own deci
sion as to whether to use any or all of them.
INDOOR: The ideal storage environment for fans and ac
cessories is indoors, above grade, in a low humidity atmo
sphere 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). Win
dows should be covered to prevent temperature variations
caused by sunlight. Provide thermometers and humidity in
dicators at several points and maintain the atmosphere at
40% relative humidity, or lower.
Form 613113
It may be necessary to use trays of renewable desiccant or
portable dehumidifier to remove moisture from the air in the
storage enclosure.
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Thermostatically controlled portable heaters (vented to out
doors) may be required to maintain even temperatures in
side 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
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and safety codes.
The following fans oraccessories must be stored indoors,in
a clean dry atmosphere:
a. Any fan that is protected by a cardboard carton.
b. Spare wheels or propellers.
c. Boxes, bags or cartons of hardware.
d. Curbs
e. 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 circula
tion 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. Pro
vide 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 accu
mulation of water. Fencing and lighting for security are de
sirable. 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.
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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
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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 block
ing to prevent settling into soft ground. Fans should be set
in place using the directional arrow markings on the crate as
a guide.
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Locate pieces far enough apart to permit air circulation,sun
light, 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 per
formed. 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 thor
oughly with Tectly 506(Ashland Oil Company) or equal. For
hard to reach internal surfaces or for occasional use, con
sider using Tectly 511MRust Preventive or WD40 or equal.
REMOVING FROM STORAGE
As fans are removed from storage to be installed in their fi
nal location, they should be protected and maintained in
similar fashion, until thefan 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! 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.
WARNING! Do not use in hazardous environments
where the fan’s electrical system could provide ignition
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to combustible or flammable materials, unless unit is
built specifically for the environment.
4. COMMERCIAL KITCHEN EXHAUST APPLICATIONS
Ventilators should be installed in accordance with the
requirements of the National Fire Protection Association
Bulletin NFPA96 “Vapor Removal From Cooking
Equipment” taking specific note of the following:
(a) Ducts terminating into the base of an up-discharge
exhaust fan must be constructed of carbon steel not
less than 16MSG (67.47mm) and extend a minimum
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of 18" (457 mm) above the roof surface.
(b) Air velocity through the duct not less than 1500 FPM
(7.620 m/s).
©) A minimum of 40" (1016 mm) clearance be main
tained between the exhaust discharge and the roof
surface. (To comply, size 80 to 135 require 24" [610
mm] roof curb. Size 150 to 200 require 18" [457 mm]
roof curb.)
5. FAN INSTALLATION:
ROOF MOUNT: Roof exhausters should be mounted
on a roof curb suitable for the purpose, either field
fabricated or prefab type. (Prefab type available as an
accessory at extra cost.) The fan should rest on the curb
as level as possible. When curb is not level (slightly
pitched on flat roofs) the down spout drain fitting should
be located on lowest side of curb. Securely fasten
exhauster to curb using a minimum of 4 lag bolts - one
centered each side.
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. IMPELLER-ORIFICE ADJUSTMENT: Turn centrifugal
impeller by hand to make sure it rotates freely. If impeller
hits inlet orifice, adjust as follows: Loosen four (4) nuts
inside motor enclosure. Adjust motor laterally to
equalize clearance on all sides of impeller. Tighten four
(4) nuts.
8. ELECTRICAL CAUTION: Before proceeding, make
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sure electrical service to fan is locked in “OFF” position.
Run wires through the internal wiring post to the motor,
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to safety disconnect switch if used. (Restaurant exhaust
fans have wires through breather tube.)
9. All wiring should be in accordance with local ordinances
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and the National Electric Code.
10.
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 to two or three speed
motors since improper connections will damage motor
and void motor warranty.
11. Apply power momentarily and compare the rotation of
the impeller with the directional arrow on fan.
WARNING! Do not operate at speeds higher than
shown in catalog for this equipment. Operation in the
wrong direction willdeliver air but will overload the motor
to the extent of blowing fuses, or overload protection
and could seriously damage the motor. In the case of
three phase motors, the direction can be changed by
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