Transcript
NECO
AXIAL FLOW FAN
Owner's and Operator's Manual (CE Models)
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!
April 2009
084090
Manufactured by
NECO
Nebraska Engineering Company A Division of GLOBAL Industries, Inc. 9364 North 45th Street Omaha, Nebraska 68112 USA www.necousa.com
GENERAL STATEMENT WARNING
Watch for this warning symbol! It will always be accompanied by important information regarding Safety, Warnings, and Precautions. ATTENTION! BE ALERT! YOUR SAFETY IS INVOLVED!
TO THE OWNER Occupational safety is of prime concern to NECO. This Owner’s and Operator’s Manual is provided to help ensure the safety of the operator as well as others who may come in contact with the equipment. It is your responsibility as an owner, operator, or supervisor to know what specific requirements, precautions, and work hazards exist and to make these known to all persons working with the equipment or who are in the area, so that they may take any needed safety precautions. Failure to read this Owner’s & Operators Manual or to understand and heed its safety instructions constitutes a misuse of the equipment.
We at NECO are continually testing and improving our products to provide the most efficient and economical grain handling equipment available. We cannot be responsible, however, for upgrading or changing units previously sold when making improvement to subsequent models.
For a period of one (1) year after shipment of goods by Buyer to the Buyer’s customer, NECO will supply free of charge, F.O.B. NECO’s factory, Omaha, Nebraska, replacement parts for any parts that prove to be defective due to workmanship or material.* Defective parts must be returned, freight-prepaid, to the NECO Factory in Omaha, Nebraska. You must obtain a “Return Authority” form from NECO prior to returning goods.
FAILURE TO FOLLOW THE INSTRUCTIONS CONTAINED IN THIS MANUAL AS WELL AS ANY OF THE CONDITIONS LISTED BELOW WILL CAUSE THIS LIMITED WARRANTY TO BE VOIDED.
The NECO equipment that you have just purchased will provide years of dependable service when properly maintained. Your work load will be lightened and you’ll save valuable time. Welcome to the growing number of satisfied NECO equipment owners.
LIMITED WARRANTY*
1. Improper assembly 2. Improper installation (including power and wiring) 3. Unauthorized alteration of goods 4. Operating the unit when repairs are needed 5. Use of unauthorized parts 6. Operation by children or uninstructed personnel 7. Processing of materials that are abrasive, that do not flow freely, or that are otheriwise unsuited for processing in a grain dryer 8. Abuse or misuse of the unit or of any of its components 9. Accidents
GOODS NOT MANUFACTURED BY NECO CARRY ONLY THE MANUFACTURER’S WARRANTY. THIS UNDERTAKING IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*This limited warranty does not extend to parts designed to wear in normal operation and be replaced periodically or to damage caused by negligence, accident, abuse, or improper installation or operation.
LIMITATION OF LIABILITY BUYER AGREES THAT IN NO EVENT SHALL NECO HAVE LIABILITY FOR DIRECT DAMAGES IN EXCESS OF THE CONTRACT PRICE OF THE GOODS FOR WHICH THE CLAIM IS MADE. Buyer further agrees that in no event shall NECO have liability for loss of use, loss of profits, or for any indirect, incidental, or consequential damages on any claim of any kind.
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Contents GENERAL STATEMENT........................................................................................................ 2 MACHINE INSPECTION........................................................................................................ 4 WORK AREA SAFETY........................................................................................................... 4 AIR EXHAUST........................................................................................................................ 4 OPERATOR QUALIFICATIONS............................................................................................. 5 OPERATING PROCEDURES................................................................................................ 5 POWER LOCK OUT............................................................................................................... 6 Roof Damage Warning.................................................................................................. 6 AVOID STRUCTURAL DAMAGE........................................................................................... 6 TYPICAL INSTALLATION CONFIGURATION........................................................................ 7 INSTALLATION INSTRUCTIONS:......................................................................................... 9 CENTRIFUGAL FAN LIST.....................................................................................................11 MINIMUM COPPER WIRE SIZES REQUIRED................................................................... 13 WIRING DIAGRAMS............................................................................................................ 14 PRE-START INSTRUCTIONS.............................................................................................. 15 OPERATION AND MAINTENANCE..................................................................................... 15 CENTRIFUGAL FAN TROUBLE SHOOTING...................................................................... 16 CENTRIFUGAL FAN REPLACEMENT PART...................................................................... 17 CENTRIFUGAL FAN INSTALLATION LAYOUT................................................................... 19 DECAL EXPLANATIONS..................................................................................................... 26
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MACHINE INSPECTION After delivery of your new fan and/or completion of assembly and before each use, inspection of the equipment is mandatory. This inspection should include 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?
WORK AREA SAFETY Under no circumstances should persons not involved in the operation be allowed to trespass into the area. It shall be the duty of all operators to see that children and/or any other unqualified persons stay out of the work area. Trespassing into the work area by anyone not involved in the actual operation, or trespassing into a hazardous area by anyone, shall result in an immediate shut down by the operator. Prior to start up and during operation, it shall be the responsibility of all operators to see that the work area is clear. It must be clean and free of any debris and misplaced tools which could cause accidental tripping and/or falling.
AIR EXHAUST INSUFFICIENT AIR EXHAUST AREA MAY RESULT IN DAMAGE TO YOUR BIN. There must be an opening of a minimum size of 1 ft3 (0.09 m3) for each 1,000 ft3 per minute (28 m3 per minute) airflow. The operator must be sure that these openings are not constricted by chaff, ice, or other materials during fan operation.
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OPERATOR QUALIFICATIONS Operation of this farm equipment shall be limited to competent and experienced persons. In addition, anyone who will operate or work around power equipment must use good common sense. In order to be qualified, 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 power machinery. This includes farm equipment, It is your responsibility to know what these regulations are in your own area or situation.
2.
Unqualified persons are to stay out of the work area. The "Work Area" is defined as the area surrounding the grain handling equipment.
3.
A person who has not read and understood all operation and safety instructions is NOT qualified to operate the machine. Please make sure you understand and adhere to your local regulations.
OPERATING PROCEDURES During the operation of your farm equipment, one person shall be designated to monitor the machinery. It is also good practice for all qualified persons involved to visually inspect the equipment periodically during any actual operation. You should be alert for any unusual vibrations, noises, and loosening of any fasteners.
CAUTION: 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!
AIR PRESSURE AGAINST THE FLOOR SUPPORTS CAN RESULT IN DAMAGE TO YOUR BIN. When filling a bin equipped with steel floor supports under a perforated floor, it is important to fill the bin with at least two feet (60 cm) of grain before the fans are turned on. The tremendous airflow from the fans will tilt the floor supports without the grain weight on the floor.
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POWER LOCK OUT It is essential to inspect your fan before turning on the power. Know how to shut down the fan power in an emergency! Prior to any servicing or adjusting of your equipment, makcertain 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 your national electrical code and by all local 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 shall be 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 vacuum caused by fans. Adequate "makeup" air or ventilation should be provided for all powered 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 cause freezing over of air exhaust or intake ports.
WARNING! A. B. C. D.
AVOID STRUCTURAL DAMAGE TO YOUR BIN Make certain that all roof vents are open and unobstructed. Make sure that there are an adequate number of vents. NECO recommends a minimum of 1 square foot (929 cm2) of vent area per every 1000 CFM (28 m3 per minute) fan air input. Make certain that all fans are installed for positive pressure aeration (push system). Roof exhausters should be interlocked with aeration fans. Roof exhausters can only then be energized when aeration fans operate. 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°F (2°C). and the relative humidity of the air is 90% or greater. If you have questions about icing conditions contact your local weather bureau.
FAILURE TO HEED THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH! NOTE: IF YOU EXPERIENCE PROBLEMS WITH YOUR FAN, CONTACT YOUR DEALER FIRST. IF THEY ARE UNABLE TO HELP, CALL THE SERVICE MANAGER AT NECO. THE PHONE NUMBER AT THE NECO FACTORY IN OMAHA, NEBRASKA, USA IS +1 402 453-6912. 6
TYPICAL INSTALLATION Figure 1 and key 1 show dimensions of an Axial Fan based on the fan tube diameter. The letters in the figure correspond to the dimensions
listed in the key. The control boxes are optional, so the control box dimensions are listed with an asterisk (*).
Front View
Key: Fan Diameter
A
Side View
B
C
D
E*
F*
inch
cm
inch
cm
inch
cm
inch
cm
inch
cm
inch
cm
inch
cm
12
30.48
7 /16
17.94
15¾
40.01
14 /8
35.88
14 /8
35.88
N/A
-
N/A
-
14
35.56
81/16
20.48
157/16
39.21
161/8
40.96
161/8
40.96
N/A
-
N/A
-
16
40.64
8 /16
21.75
18 /8
47.31
1
17 /8
43.5
1
17 /8
43.5
N/A
-
N/A
-
18
45.72
10
25.40
19¼
48.90
20
50.8
20
50.8
N/A
-
4½
11.43
24
60.96
16½
41.91
26 /8
67.63
30
76.2
31½
80.01
4
10.16
N/A
-
26
66.05
18¼
46.36
26 /8
67.63
33 /8
85.41
35 /16
89.06
4
10.16
N/A
-
1
9
5
5 5
1
5
N/A = Not Applicable
1
1
* Control Box Dimensions
Figure 1 and Key 1. Axial Fan Dimensions
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Figure 2 shows necessary and optional drying components for a typical in-bin drying installation.
Grain Bin Roof Vents with or without a peak (optional)
Power Roof Exhauster (optional)
Dual Burner Control Kit (necessary with multiple heaters)
Static Pressure Gauge (optional)
Thermostat Kit with Rain Cover (necessary with heater)
Transition (Cutaway is used to show airflow.)
Plenum Thermometer Kit (optional) Transition
Adapter Plate (necessary for most transitions between Centrifugal Fan and Heater)
Downstream Heater (optional) Shutters (optional)
Downstream Heater (optional) Shutters (optional)
Transitions should fit under the floor and be unobstructed for maximum airflow.
Centrifugal Fan
This Axial Fan is shown hanging from the bin
Axial Fan
Use pilings or make sure all concrete pads are deep enough to avoid frost heave. Note: A quarter of the bin has been cut away to show airflow and perforated floors. Perforated floors are shown incomplete. Only fan and heater-related in-bin drying equipment is shown. Stirring, loading, and unloading systems are not shown. Perforated floors are shown with galvanized floor supports only as a reference. Centrifugal fan and axial fan are shown on the same bin for the purpose of illustrating typical drying components.
Figure 2. Typical Installation
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INSTALLATION FAN AND ADD-ON HEATER MOUNTING PAD It is very important that your fan be mounted on a solid surface. The more securely your unit is mounted on a concrete slab, the less chance you have of vibration. A severe vibration can cause noise, premature wear on the fan motor bearings and ultimately impeller damage. If you choose a poured concrete slab to mount your fan and heater on, it is recommended that the surface dimension of the slab be about one foot wider all around than the mounting bolt pattern shown on the previous page. Also, the slab should be about 6 inches thick. Tip: in order to reduce the chances of frost heave, the pad can be poured on top of several metal or concrete pilings which extend lower than average frost depth. Make sure the fans are mounted level. 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, hanging installations can avoid pads and the cost and problems associated with them. NECO premium axial 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 with the proper fittings. Make certain the units are installed to prevent any sideways motion such as caused by wind. Centrifugal fans and heaters can also be hung by cables, but due to their weight and size the installations usually require angle brackets and heavier wire rope. Speak to 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 used for determining your mounting bolt locations, 9
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 will locate your drying units and mounting pad.
ELECTRICAL All electrical service must be installed by a certified electrician per the "National Electrical Code" and local codes where applicable. A service line from a properly-sized disconnect box with fuse or breaker protection must be installed by the customer. The following tables for electrical service to your fan and add-on heaters are presented for reference only. The transformer sizes listed in the following tables are the recommended minimum requirements of the unit. The fuse requirements are sized for approximately 25% overload capacity. Install these for your protection. Consult your electrician for all electrical service needs and confirmation of the installation.
The installation presented in Figure 3 is NOT recommended. Instead, attach cables to the cable brackets. Do NOT allow the fan to be cantilevered around the axial tube. This will cause fan distortion and vibration.
Figure 3. Wrong Axial Installation
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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 bare copper wire. The ground rod shall be copper-clad and 5/8”dia. x 8 ft. long. Install the rod two (2) feet away from the fan and/or bin foundation, and in accordance with local requirements. The ground rodto-fan connection provides additional safety in the event of a short or lightning strike. It also provides 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 parts supplier. NECO recommends that the rod not be driven into dry ground. Follow the steps below to ensure proper rod installation.
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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 technique will promote a good conductive bond with the surrounding soil. Drive the rod completely 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 not recommended for grounding purposes. NECO recommends that previously installed units be checked for proper grounding.
RECOMMENDED ELECTRICAL SERVICE Table 1 shows electrical information for wiring a axial fan with a single phase motor set at 230 volts. Motor Range Maximum Transformer Fusetron Timehp kW RPM Amperage KVA Size Delay Fuse 1 /3 - ½ 0.25-0.37 3450 5 1½ 6¼ ½-¾ 0.37-0.56 3450 7 2 10 1 0.75 3450 8 2 10 1½ 1.12 3450 10 3 15 3-4 2.24-2.98 3450 18 5 25 5-7 3.73-5.22 3450 35 10 50 7-9 5.22-6.71 3450 44 15 60 10 - 13 7.46-9.69 3450 55 15 70 Single phase installation must be three-wire with grounded neutral. 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 set at either 230 volt or 460 volt. Transformer Motor Range Maximum Amperage KVA Size hp kW RPM 230 460 230 460 1 /3 - ½ 0.25-0.37 3450 2 ½ ½-¾ 0.37-0.56 3450 3 ¾ 1 0.75 3450 4 1 1½ 1.12 3450 6 1½ 3-4 2.24-2.98 3450 10 5 3 1½ 5-7 3.73-5.22 3450 18 9 5 3 7-9 5.22-6.71 3450 24 12 7½ 3 10 - 13 7.46-9.69 3450 36 18 7½ 5 Three-phase installation must be 4-wire with grounded neutral.
Fusetron TimeDelay Fuse 230 460 2½ 4 5 8 15 6¼ 25 15 30 15 40 20
Table 2. Electrical information for Three-Phase Motor with either 230 Volt or 460 Volt NOTE: Always check current local, state, and federal codes concerning electrical requirements before installing any electrical equipment.
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PRE-START INSTRUCTIONS With the power supply disconnected and locked out, make certain that the fan and transition are free of debris. Rotate the fan impeller to make sure that it revolves easily and does not rub against 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 clearance and retighten the fasteners.
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 proper direction and that the air is flowing in the direction indicated on the fan housing. If it is flowing in the wrong direction, the motor connections will have to be reversed by your electrician.
BE SURE THAT THE DISCONNECT SWITCH
OPERATION AND MAINTENANCE Motors used in axial fan units are standard NEMA frame motors. Most of the replacement parts for these motors are handled by authorized service centers of various motor manufacturers. These motors are specially designed for use in crop drying. Motors are either protected by built-in thermal overloads or by an overload heater on the starter unit. 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 DAMAGING MOISTURE BUILD-UP IN THE MOTOR.
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Motor bearings are of a double seal construction and require little, if any servicing. Servicing should 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 will eventually shut down due to overheating. Debris will also retain moisture and cause corrosion on metal surfaces. Replace any damaged fan guards as soon as possible!
AXIAL FAN TROUBLE SHOOTING Problem Fan fails to start
Reason
Solution •No Power •Replace fuse (main power supply) •Bad coil •Replace coil on contactor •Reset switch on overload relay out •Reset and set for automatic •No ground •Be sure there is a good ground connection
Fan fails to come up to speed within 10 seconds
•Low amps and low voltage
Fan blows fuses or trips circuit breakers
•Short in fan controls or motor •Cover on inlet of fan •Blade out of balance
•Check for hot wires •Remove cover •Balance or replace
Fan vibration (bad)
•Debris on blade •Fan not level or set evenly on pad
•Remove debris •Adjust or Shim
Fan quits after a few hours of operation
•Weak coil (Mag. starter) •Amps are too high
•Replace coil •Check heater strip size and amp draw (Check Voltage) •Shade control box or vent to cool
•Starter capacitor bad •Centrifugal switch bad •Undersize fuse or circuit breaker
•Check with amp probe and check with power supplier •Replace •Repair or replace motor •Use FRN Fusetron or larger circuit breaker
•Control box in sun on extremely hot day •Severe vibration causing cantactor •Correct Vibration to drop out
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REPLACEMENT PARTS LIST Figure 3 (on the following page) shows potental replacement parts that can be ordered from NECO. The key to the figure list the parts numbers and arranges them by their description and corresponding fan size. Please use the figure and key to obtain the correct replacement part number for ordering replacement parts from NECO.
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NECO AXIAL FAN COMPONENTS CONTROL BOXES NOT SHOWN
REPLACEMENT PARTS LIST
Figure 4. Axial Fan Replacement Parts 16
Key: Fan Size inch
Power
cm
hp
kW
A
B
C
D
E
Flange with Screen
Shaft Bushing
Impeller
Angle Clip
Z-Bracket
12
30.48
¾
0.56
082256
F048250
043260
082610
N/A
14
35.56
1
0.75
082221
F048250
043261
082610
N/A
16
40.64
1½
1.12
082227
F040190
043262
082610
N/A
18
45.75
3
2.24
082249
F084086
043263
082610
N/A
24
60.96
5-7
3.73-5.22
082130
F048252
F048246
082610
082372
24
60.96
7½-10
5.59-7.46
082130
F048253
F048247
082610
082372
28
71.12
10-15
7.46-11.19
082199
F048253
F048248
082610
082372
F
G
G
H
J
Fan Size
Power
inch
cm
hp
kW
Housing Tube
(1) Phase Motor
(3) Phase Motor
Flange
Motor Support
12
30.48
¾
0.56
082258
N/A
043967
082257
082002
14
35.56
1
0.75
082223
N/A
082216
082222
082224
16
40.64
1½
1.12
082229
N/A
043640
082228
082230
18
45.75
3
2.24
082375
N/A
081067
082250
082328
24
60.96
5-7
3.73-5.22
082127
N/A
043786
082124
082129
24
60.96
7½-10
5.59-7.46
082127
N/A
042999
082124
082129
28
71.12
10
7.46
082198
N/A
081246
082203
082204
K
Control Box
Control Box
Control Box
Fan Size
Power
inch
cm
hp
kW
Handle(s)
230 V 1P Control
230 3P Control
460V Control
12
30.48
¾
0.56
N/A
N/A
N/A
N/A
14
35.56
1
0.75
N/A
N/A
N/A
N/A
16
40.64
1½
1.12
N/A
N/A
N/A
N/A
18
45.75
3
2.24
N/A
N/A
N/A
N/A
24
60.96
5-7
3.73-5.22
N/A
N/A
N/A
N/A
24
60.96
7½-10
5.59-7.46
N/A
N/A
N/A
N/A
28
71.12
10-15
7.46-11.19
N/A
N/A
N/A
N/A
NOTE: WHEN REASSEMBLING THE UNIT MAKE CERTAIN TO USE THE SAME TYPE AND GRADE OF FASTENER. THIS IS EXTREMELY IMPORTANT AS RELATING TO THE SHAFT BUSHING! Figure 4 key. Axial Fan Replacement Parts
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www.necousa.com MANUFACTURED BY
NECO
A Division of GLOBAL Industries, Inc.
9364 North 45th Street Omaha, Nebraska 68152 USA TEL: 402-453-6912 FAX: 402-453-0471
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