AXIAL FLOW FAN Owner's and Operator's Manual October 2008 Printing 040713 ATTENTION Pay close attention when you see this triangular symbol. It will be located throughout this manual and on decals. Obey the Dangers, Warnings and Cautions. YOUR SAFETY IS INVOLVED! READ AND UNDERSTAND THIS MANUAL BEFORE OPERATING! DANGER ·DO NOT OPERATE THIS UNIT WITHOUT GUARD(S) SECURED IN PLACE. ·STOP FAN AND LOCKOUT POWER TO ADJUST, SERVICE OR CLEAN. ·KEEP CHILDREN AND PERSONS NOT FAMILIAR WITH EQUIPMENT AWAY. FAILURE TO HEED WILL RESULT IN SERIOUS INJURY OR DEATH! Nebraska Engineering Co. A Division of GLOBAL Industries, Inc. 9364 North 45th Street Omaha, Nebraska 68112 www.necousa.com Manufactured by
Transcript
AXIAL FLOW FANOwner's and Operator's Manual
October 2008 Printing 040713
ATTENTIONPay close attention when you see this triangular symbol.It will be located throughout this manual and on decals.
Obey the Dangers, Warnings and Cautions.
YOUR SAFETY IS INVOLVED!
READ AND UNDERSTAND THIS MANUAL BEFORE OPERATING!
DANGER·DO NOT OPERATE THIS UNIT WITHOUT GUARD(S) SECURED IN PLACE.·STOP FAN AND LOCKOUT POWER TO ADJUST, SERVICE OR CLEAN.·KEEP CHILDREN AND PERSONS NOT FAMILIAR WITH EQUIPMENT AWAY.
FAILURE TO HEED WILL RESULT IN SERIOUS INJURY OR DEATH!
Nebraska Engineering Co.A Division of GLOBAL Industries, Inc.
9364 North 45th StreetOmaha, Nebraska 68112
www.necousa.com
Manufactured by
2
GENERAL STATEMENT
LOOK FOR THIS SYMBOL! IT POINTS OUTIMPORTANT SAFETY PRECAUTIONS. IT MEANS,
“ATTENTION! - BECOME ALERT! YOUR SAFETY IS INVOLVED”.
Occupational safety is of prime concern to NECO. This Owner’s and Operator’s Manual was written with thesafety of the operator and others who come in contact with the equipment as our prime concern. It is yourresponsibility as an owner, operator, or supervisor to know what specific requirements, precautions, and workhazards exist and to make these known to all other personnel working with the equipment or in the area, sothat they too may take any necessary safety precautions that may be required. Failure to read this Owner’s &Operators Manual and its’ safety instructions is a misuse of the equipment.
TO THE OWNER
We at NECO are continually testing and improving our products to give you the most efficient and economicalgrain handling equipment available. However, when improvements on our equipment are made, we cannot beresponsible for upgrading or changing units sold previously. The NECO equipment that you have just pur-chased will give years of dependable service when properly maintained. Your work load will be lightened andvaluable time will be saved. Congratulations on a wise investment and an astute brand choice . . . Welcome tothe growing number of satisfied NECO equipment owners.
LIMITED WARRANTY
For a period of one (1) year after shipment of goods by Buyer to its’ customer, NECO will supply, free of charge,F.O.B. NECO’s factory, Omaha, Nebraska, replacement parts for parts which prove defective in workmanshipor material. Defective parts must be returned freight prepaid to the NECO Factory in Omaha, Nebraska. Priorto returning goods, NECO requires that a return form be obtained from NECO.
This limited warranty does not extend to parts designed to wear in normal operation and be replaced periodi-cally; or to damage caused by negligence, accident, abuse or improper installation or operation.
GOODS NOT MANUFACTURED BY NECO CARRY ONLY THE MANUFACTURER’S WARRANTY.
THIS UNDERTAKING IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MER-CHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE.
FAILURE TO FOLLOW THE INSTRUCTIONS CONTAINED IN THIS MANUAL AND THE ITEMS LISTED BE-LOW WILL RESULT IN THE VOIDING OF THIS LIMITED WARRANTY.
1. Improper assembly.2. Improper installation (power and wiring included)3. Unauthorized alterations of goods.4. Goods operated when obviously in need of repair.5. Use of unauthorized repair parts.6. Irresponsible operation by children or uninstructed personnel7. Used to handle materials other than free flowing, nonabrasive and dry materials as intended.8. Damaged through abusive use or accident.
LIMITATION OF LIABILITY
BUYER AGREES THAT IN NO EVENT SHALL NECO HAVE LIABILITY FOR DIRECT DAMAGES IN EXCESSOF THE CONTRACT PRICE OF THE GOODS IN RESPECT OF WHICH CLAIM IS MADE AND BUYERFURTHER AGREES THAT IN NO EVENT SHALL NECO ON ANY CLAIM OF ANY KIND, HAVE LIABILITYFOR LOSS OF USE, LOSS OF PROFITS OR FOR ANY INDIRECT, INCIDENTAL, OR CONSEQUENTIALDAMAGES.
3
After delivery of your new fan and/or completion of assembly and beforeeach use, inspection of the equipment is mandatory. This inspection shouldinclude but not be limited to:
1. Check to see that all guards listed in the assemble are secured in place and are functional.2. Check that all fasteners are tight.3. Before starting fan, be sure that fan interior and inlet is clear of any debris.4. Make certain that impeller rotates freely.5. Open roof hatches before use.6. Inspect all electrical connections.7. Are all safety decals clean and readable?
People not involved in the operation should not be allowed into the area.
It shall be the duty of all operators to see that children and/or any other unqualified per-sons stay out of the work area. Trespassing into the work area by anyone not involved inthe actual operation, or trespassing into a hazardous area by anyone, shall result in animmediate shut down by the operator.It is highly recommended to wear hearing protection when standing near operating fan.
Prior to start up and during operation, it shall be the responsibility of all operators to seethat the work area is clear. It must be clean and free of any debris and misplaced toolswhich could cause accidental tripping and/or falling.
WORK AREA SAFETY
IMPORTANT
INSUFFICIENT AIR EXHAUST AREA MAY RESULT IN DAMAGETO YOUR BIN.
A minimum of 1 square foot opening for each 1000 CFM of air is required.
The operator must be sure that these openings are not constricted bychaff, ice or other materials during fan operation.
MACHINE INSPECTION
SUFFICIENT AIR PRESSURE AGAINST FLOOR SUPPORTS MAYRESULT IN DAMAGE TO YOUR BIN.
When filling a bin equipped with steel floor supports under a perforated floor. It is impor-tant to fill the bin with at least two feet (60cm) of grain before the fans are turned on. Withoutthe grain weight on the floor, The tremendous air flow from the fan(s) will tilt the floor sup-ports.
4
OPERATOR QUALIFICATIONS
Operation of this farm equipment shall be limited to competent and expe-rienced persons. In addition, anyone who will operate or work aroundpower equipment must use good common sense. In order to be quali-fied, operator must also know and meet all other requirements, such as:
1. Some regulations specify that no one under the age of 16 may operate powermachinery. This includes farm equipment, It is your responsibility to knowwhat these regulations are in your own area or situation.
2. Current OSHA regulations state in part: "At the time of initial assignment and at leastannually thereafter, the employer shall instruct every employee in the safe operationand servicing of all equipment with which the employee is, or will be involved."*
3. Unqualified persons are to stay out of the work area. The "Work Area" isdefined as the area surrounding the grain handling equipment.
4. A person who has not read and understood all operation and safety instructionsis NOT qualified to operate the machine.
* Federal Occupational Safety & Health Standards for Agriculture Subpart D,Section 1928.57 (a) (6).
OPERATING PROCEDURES
During the operation of your farm equipment, one person shall be desig-nated to monitor the machinery. It is also good practice for all qualifiedpersons involved to visually inspect the equipment periodically during anyactual operation. You should be alert for any unusual vibrations, noises,and loosening of any fasteners.
1. Observe work area restrictions.2. Keep all safety shields and devices in place.3. Make certain everyone is safely clear before operating or moving farm equipment.4. Keep hands, feet, and loose clothing away from moving parts.5. Always disconnect power before servicing equipment!
CAUTION:
5
POWER LOCK OUT
It is essential to inspect your fan before turning on the power. Know how to shut downthe fan power in an emergency! Prior to any servicing or adjusting of your equipment,make certain to shut down the power and lock it out.
1. Electric motors and controls shall be installed by a qualified electrician. Installation must meet standards set by the National Electrical Code and all local and state codes.2. Always disconnect and lock out power before servicing the fan.3. Reset and motor starting controls must be located so that the operator has a full view of the entire operation. Always keep children away from unit!4. Make certain that all fan guards are reinstalled after servicing.
A main power disconnect switch capable of being locked only in the OFF position shallbe installed. This shall be locked out whenever the equipment is being serviced.
ROOF DAMAGE WARNING
NECO cannot warrant any roof damages due to internal pressure or excessive vacuumcaused by fans. Adequate "make-up" air or ventilation should be provided for all pow-ered air handling units. NECO does not recommend the use of downward flow (suction)systems. Severe roof and bin structural damage can result from air passage blockage.Also running of fans during certain cold weather/high humidity conditions can causefreezing over of air exhaust or intake ports.
WARNING!
AVOID STRUCTURAL DAMAGE TO YOUR BIN.
A. Make certain that all roof vents are open and unobstructed. Make sure that there are an adequatenumber of vents. NECO recommends a minimum of 1 square foot (929 cm^2) of vent area per every1000 cfm (21 m^3/min) fan air input.
B. Make certain that all fans are installed for positive pressure aeration (push system).C. Roof exhausters should be interlocked with aeration fans. Roof exhausters can
only then be energized when aeration fans operate.D. Never operate your bin aeration system if conditions exist that can cause roof vent
icing. Roof vent icing can occur when the ambient air temperature is below 35 deg. F (2 deg. C). andthe relative humidity of the air is 90% or greater. If you have questions about icing conditions contactyour local weather bureau.
6
Figure 1 and key 1 show dimensions of an Axial Fan based on the fan tube diameter. Theletters in the figure correspond to the dimensions listed in the key. The control boxes areoptional, so the control box dimensions are listed with an asterisk (*).
FAILURE TO HEED THESE INSTRUCTIONSCAN RESULT IN PERSONAL INJURY OR DEATH!
NOTE:IF YOU EXPERIENCE PROBLEMS WITH YOUR FAN, CONTACTYOUR DEALER FIRST. IF THEY ARE UNABLE TO HELP, CALL THESERVICE MANAGER AT NECO. THE PHONE NUMBER IS 1-800-367-6208OR (402) 453-6912.
7
WARNINGFAN A
ND HEATER OPER
ATION
NECO
Transition(Cutaway isused to showairflow.)
Shutters (optional)
DownstreamHeater (optional)
Adapter Plate (necessary formost transitions betweenCentrifugal Fan and Heater)
Centrifugal Fan
Dual Burner Control Kit(necessary withmultiple heaters)
Thermostat Kit withRain Cover(necessary with heater)
Static Pressure Gauge(optional)
PlenumThermometerKit (optional)
Transition
DownstreamHeater (optional)
Axial Fan
Note: A quarter of the bin has been cut away to show airflow and perforated floors. Perforated floors are shownincomplete. Only fan and heater-related in-bin drying equipment is shown. Stirring, loading, and unloadingsystems are not shown. Perforated floors are shown with galvanized floor supports only as a reference. Centrifu-gal fan and axial fan are shown on the same bin, for the purpose of illustrating typical drying components.
Use pilings or make sure all concrete padsare deep enough to avoid frost heave.
Power Roof Exhauster(optional)
Figure 2 shows necessary and optional drying components for a typical in-bin drying installa-tion.
Figure 2. Typical Installation
Transitions should fit underthe floor and be unobstructedfor maximum airflow.
Grain Bin Roof Ventswith or without a peak(optional)
Shutters(optional)
This Axial Fan isshown hangingfrom the bin.
8
INSTALLATIONFAN AND ADD-ON HEATER MOUNTING PAD
It is very important that your fan be mounted on a solid surface. The more securely yourunit is mounted on a concrete slab, the less chance you have of vibration. A severe vibrationcan cause noise, premature wear on the fan motor bearings and ultimately impeller damage. Ifyou choose a poured concrete slab to mount your fan and heater on, it is recommended thatthe surface dimension of the slab be about one foot wider all around than the mounting boltpattern shown on the previous page. Also, the slab should be about 6 inches thick. Tip: inorder to reduce the chances of frost heave, the pad can be poured on top of several metal orconcrete pilings which extend lower than average frost depth. Make sure the fans are mountedlevel. Any binding will twist the housings and cause future problems.
FAN AND ADD-ON HEATER HANGING INSTALLATION
Fans can also be hung off the side of the grain bin with cables. If properly done, hanginginstallations can avoid pads and the cost and problems associated with them. NECO premiumaxial fans and axial heaters 24" and greater are equipped with cable attachment brackets(located at the handles). Use a minimum 3/16" galvanized (or stainless) steel wire rope withthe proper fittings. Make certain the units are installed to prevent any sideways motion such ascaused by wind. Centrifugal fans and heaters can also be hung by cables, but due to theirweight and size the installations usually require angle brackets and heavier wire rope. Speakto your dealer or local millwright about cable type installations.
INSTALLATION DATA
Physical dimensions of axial fans are illustrated on the previous page. This data is to be usedfor determining your mounting bolt locations, duct attachment hole locations and bolt sizes.When installing the fan, plan the installation such that proper consideration is given to:
1. Elevation - Fan and heater mounting plane is the same as your grain bin.Note: On MFS 4" corrugated grain bin with a rolled in base angle, the fan and heater
mounting plane needs to be 1-1/2" lower.
2. Horizontal placement - Attach your aeration transition to your bin. This willlocate your drying units and mounting pad.
ELECTRICAL
All electrical service must be installed by a certified electrician per the "National ElectricalCode" and local codes where applicable. A service line from a properly-sized disconnect boxwith fuse or breaker protection must be installed by the customer. The following tables forelectrical service to your fan and add-on heaters are presented for reference only. The trans-former sizes listed in the following tables are the recommended minimum requirements of theunit. The fuse requirements are sized for approximately 25% overload capacity. Install thesefor your protection.
Consult your electrician for all electrical service needs and confirmation of the installation.
9
The installation presented in Figure 3 is NOT recommended. Attach cables to the cablebrackets. Do NOT allow the fan to be cantilevered around the axial tube. This will cause fandistortion and vibration.
Figure 3. Wrong Axial Installation
10
GROUNDING
NECO recommends that your fan be connected to a ground rod that is no further than 8 feet away.The ground rod should be connected to the fan control panel with a minimum 6 AWG solid barecopper wire. The ground rod shall be copper-clad and 5/8”dia. x 8 ft. long. Install the rod (2) feetaway from the fan and/or bin foundation, and in accordance with local requirements. The groundrod-to-fan connection provides additional safety in the event of a short or lightning strike. It alsoprovides the necessary grounding for operation and long life of control circuits in the fan and heater.
NECO does not supply or sell ground rods and wires; please contact your local electrical partssupplier. NECO recommends that the rod not be driven into dry ground. Follow the steps below toensure proper rod installation.
1. Dig a ditch large enough to hold 1-2 gallons of water.2. Fill the ditch with water.3. Push the rod into the water and jab it into the ground.4. Jab the rod up & down allowing the water to work its way down the hole. This tech-
nique will promote a good conductive bond with the surrounding soil. Drive the rodcompletely down.
5. Connect one end of the ground wire to the rod with an appropriate ground clamp.6. Connect the other end of the wire to a ground lug connector inside of the fan control
box. The ground wire should not have any splices or breaks. Insulated wire is notrecommended for grounding purposes.
NECO recommends that previously installed units be checked for proper grounding.
11
RECOMMENDED ELECTRICAL SERVICE
Table 1 shows electrical information for wiring a axial fan with a single phase motor set
at 230 volts.
Motor hpRange
1/3 - 1/21/2 - 3/4
11-1/23 - 45 - 77 - 9
10 -13
34503450345034503450345034503450
578
1018354455
MaximumAmperage
1.52235
101515
6.2510101525506070
TransformerKVA Size
FusetronTime-Delay Fuserpm
Motor hpRange
1/3 - 1/21/2 - 3/4
11-1/23 - 45 - 77 - 9
10 -13
34503450345034503450345034503450
2346
10182436
.5.751.01.53.05.07.57.5
2.5458
15253040
rpm
MaximumAmperage230 460
TransformerKVA Size230 460
FusetronTime-Delay Fuse
230 460
----59
1218
----
1.53.03.05.0
----
6.25151520
Single phase installation must be three-wire with grounded neutral.
Three-phase installation must be 4-wire with grounded neutral.
NOTE: Always check current local, state, and federal codes concerning electrical require-ments before installing any electrical equipment.
Table 1. Electrical information for Single Phase Motor 230 Volt
Table 2 shows electrical information for wiring a axial fan with a three phase motor setat either 230 volt or 460 volt.
Table 2. Electrical information for Three-Phase Motor with either 230 Volt or 460 Volt
12
LOADIN
AMPS
LENGTH OF RUN IN FEET
5678910
1214161820
253035404550
60708090100
115130145160180200
225250275300
325350375400
40' 50' 60' 70' 80' 90' 100' 125' 150' 175' 200'
141414141414
1414121212
101010888
66642
11000000000
0000250300350
400500500600
141414141414
1414121212
10108888
66642
11000000000
0000250300350
400500500600
141414141414
1414121212
10108888
66642
11000000000
0000250300350
400500500600
141414141414
1412121212
1088888
66642
110000000
0000250300350
400500500600
141414141414
1212121210
1088886
66442
11000000000
0000250300350
400500500600
141414141412
1212121010
1088666
64442
11000000000
0000250300350
400500500600
141414141212
1212101010
888666
44442
11000000000
0000250300350
400500500600
141414121212
101010108
866664
44222
1000000000000
0000250300400
400600600700
141212121210
1010888
666444
22221
000000000000000
250300350400
500600600700
121212121010
108888
664444
22211
000000000000000
250300350400
500600600700
121212101010
88866
644442
22110
00000000000000000
250300350400
500600600700
Table 3. Minimum Wire Size Requirements
Table 3 shows information for the minimum wire sizes requirements for loads up to 400amperes at 230 - 240 volts.
13
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
NT
RO
L B
OX
LID
.
Figure 4 shows a wiring diagram for a three-phase 230 volt axial fan. This wiring dia-gram represents 04AC8103, and 04AC6753 series of fans. The heater receptacle shown onFigure 4 wiring diagram will ease the wiring installation of any heaters attached to the fan.
Figure 4. Wiring Diagram NECO Axial Fan 230 volt, three-phase.
14
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
NT
RO
L B
OX
LID
.
Figure 5 shows a wiring diagram for a single phase, 230 volt, 1 horsepower axial fanwith a Baldor motor. This wiring diagram goes to fan series 04AC8101, and 04AC6101.Please cheak the brand of your motor and the wiring diagram on the inside of your control boxto see if this diagram matches. The heater receptacle shown on Figure 5 wiring diagram willease the wiring installation of any heaters attached to the fan.
Figure 5. Wiring Diagram NECO Axial Fan 230 volt, 1 phase, Baldor Motor.
15
Figure 6. Wiring Diagram NECO Axial Fan 230 volt, 1 phase, Lincoln Motor.
Figure 6 shows a wiring diagram for a single phase, 230 volt, 1 horsepower axial fanwith a Lincoln motor. This wiring diagram goes to fan series 04AC8101, and 04AC6101.Please cheak the brand of your motor and the wiring diagram on the inside of your control boxto see if this diagram matches. The heater receptacle shown on Figure 6 wiring diagram willease the wiring installation of any heaters attached to the fan.
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
NT
RO
L B
OX
LID
.
16
Figure 7 shows a wiring diagram for a single phase, 230 volt, 1 horsepower axial fanwith a Leeson motor. This wiring diagram goes to fan series 04AC8101, and 04AC6101.Please cheak the brand of your motor and the wiring diagram on the inside of your control boxto see if this diagram matches. The heater receptacle shown on Figure 7 wiring diagram willease the wiring installation of any heaters attached to the fan.
Figure 7. Wiring Diagram NECO Axial Fan 230 volt, 1 phase, Leeson Motor.
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
NT
RO
L B
OX
LID
.
17
Figure 8 shows a wiring diagram for a three phase 60 hertz, 230/460 volt or 575 voltaxial fan. This wiring diagram goes to fan series 04AC8101, and 04AC6101.
Figure 8. Wiring Diagram NECO Axial Fan 230/460 volt or 575 volt, 3 phase.
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
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L B
OX
LID
.
18
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
N S
EE
UN
DE
RS
IDE
OF
CO
NT
RO
L B
OX
LID
.
Figure 9 shows a wiring diagram for a single phase, 230 volt, 5 horsepower axial fan.This wiring diagram goes to fan series 04AC4501, 04AC4501C and 04AC4501-ECP. Theheater receptacle shown on Figure 9 wiring diagram will ease the wiring installation of anyheaters attached to the fan.
Figure 9. Wiring Diagram NECO Axial Fan 230 volt, 1 phase.
19
FO
R E
XA
CT
WIR
ING
DIA
GR
AM
OF
YO
UR
FA
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EE
UN
DE
RS
IDE
OF
CO
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RO
L B
OX
LID
.
Figure 10 shows a wiring diagram for a single phase, 230 volt, 7.5 horsepower axialfan. This wiring diagram goes to fan series 04AC4751, and 04AF4751C. The heater recep-tacle shown on Figure 10 wiring diagram will ease the wiring installation of any heaters at-tached to the fan.
Figure 10. Wiring Diagram NECO Axial Fan 230 volt, 1 phase.
20
FAN
AIR
DE
LIV
ER
Y -
CE
RT
IFIE
D A
IR F
LO
W R
AT
ING
S @
345
0 R
.P.M
.
DIA
.
12
12
14
16
18
18
24
24
28F
AN
SIZ
E H.P
.
3/4 1 1
1-1/
2
1-1/
2
3 5
7-1/
2
10
0.00
CFM
25
00
31
00
39
00
43
05
53
75
65
00
12
75
0
13
60
0
19
50
0
0.50
CF
M
22
50
27
00
35
00
39
85
49
75
61
75
119
75
12
95
0
18
75
0
18
25
24
00
31
50
36
25
45
25
58
25
112
00
12
30
0
18
00
0
-
15
00
16
50
31
50
40
25
54
50
10
35
0
116
00
17
20
0
- - -
23
30
31
50
49
75
95
00
10
90
0
16
40
0
- - - - -
43
25
83
50
99
00
15
45
0
- - - - - -
72
00
89
00
14
50
0
- - - - - -
54
00
70
75
13
45
0
- - - - - -
36
00
52
50
12
40
0
- - - - - -
22
75
42
00
110
50
- - - - - -
95
0
31
50
97
00
STA
TIC
PR
ES
SU
RE
IN IN
CH
ES
OF
WA
TE
R
1.00
CF
M1.
50C
FM
2.00
CF
M2.
50C
FM
3.00
CF
M3.
50C
FM
4.00
CF
M4.
50C
FM
5.00
CF
M
Tabl
e 4
show
s ai
rflo
w r
atin
g so
rted
by
fan
size
, hor
sepo
wer
, and
cub
ic fe
et p
er m
inut
e (C
FM
).
Tabl
e 4.
Fan
Air
Del
iver
y -
Cer
tifie
d A
irflo
w R
atin
gs @
345
0 R
.P.M
.
21
Motors used in axial fan units are standard NEMA frame motors. Most of the replacementparts for these motors are handled by authorized service centers of various motor manufactur-ers. These motors are specially designed for use in crop drying. Motors are either protectedby built-in thermal overloads or by an overload heater on the starter unit.
Some problems can be encountered with single-phase motors during the initial surge of themotor. The initial starting amperage surge is usually about 5 times the nameplate rating. Thetotal voltage drop should not be below 190 volts on starting surge and no lower than NEMA-specified 10% of line voltage during continuous motor operation. If the voltage drops duringthe starting surge to below 190 volts there is a good possibility that the capacitors may burnout. If line voltage remains low during operation the motor is likely to overheat and a nuisanceshutoff or burnout is likely to occur.
Each fan motor should be wired through a circuit breaker or fuse disconnect switch.
THE FAN SHOULD BE RUN 30 MINUTES EVERY 3 WEEKS TO ELIMINATE ANY DAMAG-ING MOISTURE BUILD-UP IN THE MOTOR.
Motor bearings are of a double seal construction and require little, if any servicing. Servicingshould be referred to a authorized motor service center.
Keep the fan inlet guard free of any debris. If debris is allowed to accumulate, the motor willeventually shut down due to overheating. Debris will also retain moisture and cause corrosionon metal surfaces. Replace any damaged fan guards as soon as possible!
OPERATION AND MAINTENANCE
PRE-START INSTRUCTIONSWith the power supply disconnected and locked out, make certain that the fan and transitionare free of debris. Rotate the fan impeller to make sure that it revolves easily and does not rubagainst the housing. Make certain the fan guard is secured into place.
Inspect ALL fasteners to make sure they are tight. If any are loose, check for proper clearanceand retighten the fasteners.
BE SURE THAT THE DISCONNECT SWITCH AND FAN ARE WELL-GROUNDED.
The first time the fan is to be started, run it briefly to make sure the fan is rotating in the properdirection and that the air is flowing in the direction indicated on the fan housing. If it is flowing inthe wrong direction, the motor connections will have to be reversed by your electrician.
22
Re
aso
nS
olu
tion
Fan
fails
to s
tart
Fan
fails
to c
ome
up to
spe
ed w
ithin
10
seco
nds
Fan
blo
ws
fuse
s or
trip
s c
ircui
t bre
aker
s
Fan
vib
ratio
n (b
ad)
Fan
qui
ts a
fter o
pera
ting
a fe
w h
ours
Pro
ble
m
AX
IAL
FA
N T
RO
UB
LE
SH
OO
TIN
G
•N
o P
ower
•B
ad c
oil
•R
eset
sw
itch
on o
verlo
ad re
lay
out
•N
o gr
ound
•Lo
w a
mps
and
low
vol
tage
•S
tart
er c
apac
itor
bad
•C
entr
ifuga
l sw
itch
bad
•U
nder
size
fuse
or c
ircui
t bre
aker
•S
hort
in fa
n co
ntro
ls o
r mot
or•
Cov
er o
n in
let o
f fan
•B
lade
out
of b
alan
ce•
Deb
ris o
n bl
ade
•F
an n
ot le
vel o
r set
eve
nly
on p
ad•
Wea
k co
il (M
ag. s
tart
er)
•A
mps
are
too
high
•C
ontr
ol b
ox in
sun
on
extr
emel
y ho
t day
•S
ever
e vi
brat
ion
caus
ing
cant
acto
r to
drop
out
•R
epla
ce fu
se (m
ain
pow
er s
uppl
y)•
Rep
lace
coi
l on
cont
acto
r•
Res
et a
nd s
et fo
r aut
omat
ic•
Be
sure
ther
e is
a g
ood
grou
nd c
onne
ctio
n•
Che
ck w
ith a
mp
prob
e an
d ch
eck
with
pow
er s
uppl
ier
•R
epla
ce•
Rep
air o
r rep
lace
mot
or•
Use
FR
N F
uset
ron
or la
rger
circ
uit b
reak
er•
Che
ck fo
r hot
wire
s•
Rem
ove
cove
r•
Bal
ance
or r
epla
ce•
Rem
ove
debr
is•
Adj
ust o
r Shi
m•
Rep
lace
coi
l•
Che
ck h
eate
r str
ip s
ize
and
amp
draw
(Che
ck V
olta
ge)
•S
hade
con
trol
box
or v
ent t
o co
ol•
Cor
rect
Vib
ratio
n
23
Page intentionally left blank.
24
Figure 11. Axial Fan Replacement Parts
Figure 11. Shows potental replacement parts that can be ordered from NECO. The key to the figurelist the parts numbers and arranges them by there description and what size fan they go to. Use thekey to the figure to gain the correct replacement part number for reorder form NECO.
REPLACEMENT PARTS LIST
NE
CO
AX
IAL
FA
N C
OM
PO
NE
NT
SC
ON
TR
OL
BO
XE
S N
OT
SH
OW
N
25
NO
TE
: W
HE
N R
EA
SS
EM
BL
ING
UN
IT M
AK
E C
ER
TAIN
TO
US
E T
HE
SA
ME
TY
PE
AN
DG
RA
DE
OF
FA
ST
EN
ER
. T
HIS
IS
EX
TR
EM
ELY
IM
PO
RTA
NT
CO
NC
ER
NIN
G T
HE
SH
AF
T B
US
HIN
G!
Figure 11 key. Axial Fan Replacement Parts
"A"
"B"
"C"
"D"
"E"
Ho
rse
po
we
rF
lang
e w
/ Scr
ee
nS
haft
Bus
hing
Imp
elle
rA
ngle
Clip
Z-B
rack
et
12
"¾
08
22
56
F0
48
25
00
43
26
00
82
13
1N
/A1
4"
10
82
22
1F
04
82
50
04
32
61
08
21
31
N/A
16
"1
½0
82
22
7F
04
01
90
04
32
62
08
21
31
N/A
18
"3
08
22
49
F0
48
25
10
43
26
30
82
13
1N
/A2
4"
5 -
70
82
13
0F
04
82
52
F0
48
24
60
82
13
10
82
37
22
4"
7½
- 1
00
82
13
0F
04
82
52
F0
48
24
70
82
13
10
82
37
22
8"
10
- 1
50
82
19
9F
04
82
52
F0
48
24
80
82
13
10
82
37
2"F
""G
""G
""H
""J
"H
ors
ep
ow
er
Ho
usin
g T
ube
(1)
Pha
se M
oto
r(3
) P
hase
Mo
tor
Fla
nge
Mo
tor
Sup
po
rt1
2"
¾0
82
25
8F
04
82
12
AF
04
82
13
A0
82
25
70
82
00
21
4"
10
82
22
3F
04
82
14
F0
48
21
50
82
22
20
82
22
41
6"
1½
08
22
29
F0
48
21
6A
F0
48
21
7A
08
22
28
08
22
30
18
"3
08
23
75
F0
48
21
8F
04
82
19
08
22
50
08
21
83
24
"5
- 7
08
21
27
F0
48
22
0F
04
82
21
08
21
24
08
21
29
24
"7
½ -
10
08
21
27
F0
48
22
2F
04
82
23
08
21
24
08
21
29
28
"1
0 -
15
08
21
98
F0
48
22
4F
04
82
25
08
22
03
08
22
04
"K"
Co
ntro
l Bo
xC
ont
rol B
ox
Co
ntro
l Bo
xH
ors
ep
ow
er
Ha
ndle
(s)
23
0V
1P
Co
ntro
l2
30
V 3
P C
ont
rol
46
0V
Co
ntro
l1
2"
¾F
11
80
73
N/A
N/A
N/A
14
"1
F1
18
07
3N
/AN
/AN
/A1
6"
1½
F1
18
07
3N
/AN
/AN
/A1
8"
3F
11
80
73
04
31
38
08
22
81
08
23
85
24
"5
- 7
F1
18
07
30
40
56
70
82
14
0+
08
22
82
08
23
87
24
"7
½ -
10
F1
18
07
30
40
56
90
82
14
1+
08
22
82
08
22
71
28
"1
0 -
15
F1
18
07
30
40
57
20
40
57
30
82
14
0
Fa
n S
ize
Fa
n S
ize
Fa
n S
ize
QUALITY
VALU
E
SE
RV
ICE
Nebraska Engineering Co.A Division of GLOBAL Industries, Inc.
