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OMM-23-1009-page 11

Any accessories used in conjunction with the blower should also be inspected to make sure they are functioning
within their intended limits and design specifications. The manufacturers maintenance manuals should be referred to
for correct maintenance procedures. These accessories include, but are not limited to, the following: 

Shaft seals, inspection doors, vibration isolators or vibration bases, air flow or pressure measuring equipment,
hoods, controls, special coatings, silencers, expansion joints, valves, flexible connectors and filters.

VI. ORDERING REPLACEMENT PARTS:

Under normal conditions, you should not need any spare or replacement parts for at least 24 months after shipment
from Cincinnati Fan. That does not include any wear due to abrasion, corrosion, excessive temperatures, abuse, mis-
use, accident or any severe conditions the fan was not designed for.

NOTICE:

1. If this blower is vital to any process that could cost you lost revenue, we strongly recommend that you keep

a replacement blower wheel and motor at your location.

2. If this blower is vital for the safety of any people and/or animals, we strongly recommend that you keep a

complete blower/motor assembly, as originally ordered, at your location.

To order any parts or complete units, contact us for the name of our sales office for your area. Or you can find
them on our website at: 

www.cincinnatifan.com

WE MUST HAVE THE BLOWER SERIAL NUMBER FROM THE BLOWER NAME PLATE TO IDENTIFY PARTS CORRECTLY.

VII. TROUBLESHOOTING

Troubleshooting should only be performed by trained personnel. Any potential electrical problems should only
be checked by a licensed electrician. All safety rules, regulations and procedures MUST be followed. Failure to

follow proper procedures can cause property damage, severe bodily injury and death.

DANGER

 

  PROBLEM CAUSE

Excessive Vibration

 

1.  Loose mounting bolts, wheel set screws, taper-lock hubs.

 

2.  Worn or corroded blower wheel.

 

3.  Accumulation of foreign material on blower wheel.

 

4.  Bent motor shaft.

 

5.  Worn motor bearings.

 

6.  Motor out of balance.

 

7.  Inadequate structural support.

 

8.  Support structure not sufficiently cross braced.

 

9.  Weak or resonant foundation.

 

10. Foundation not flat and level.

Airflow (CFM) Too Low

 

1.  Blower wheel turning in wrong direction (

rotation

).

 

2.  Actual system static pressure (

SP

) is higher than expected.

 

3.  Motor speed (

RPM

) too low.

 

4.  Dampers or valves not adjusted properly.

 

5.  Leaks or obstructions in duct work.

 

6.  Filters dirty.

 

7.  Inlet and/or discharge guards are clogged.

 

8.  Duct elbow too close to blower inlet and/or discharge.

 

9.  Improperly designed duct work

 

10. Blower wheel not properly located relative to the inlet bell (

LM

 Model only).

Airflow (CFM) Too High

 

1.  Actual system static pressure (

SP

) is lower than expected.

 

2.  Motor speed (

RPM

) too high.

 

3.  Filter not in place.

 

4.  Dampers or valves not adjusted properly.

Potential problems and causes listed below are in no order of importance or priority. The causes are only a list
of the most common items to check to correct a problem. If you find the cause of a problem, 

DO NOT

assume it is

the 

ONLY

cause of that problem. Different problems can have the same causes. 

Содержание LM

Страница 1: ... need to order any replacement parts special instructions may be required NOTICE LONG TERM STORAGE NOTICE If this blower will NOT be installed and put into operation within 30 days refer to the Long Term Storage Instructions on pages 12 and 13 Failure to follow all applicable long term storage instructions will void your warranty This blower should be stored indoors in a clean dry location BLOWER ...

Страница 2: ...r when removing it from the packaging container All the packaging material should be kept in the event the blower needs to be returned Handling Handling of the blower should be performed by trained personnel and be consistent with all safe handling practices Verify that all lifting equipment is in good operating condition and has the proper lifting capacity The blower should be lifted using well p...

Страница 3: ...dance with OSHA regulations Power to the blower should NOT be tuned back on until the required guards have been repaired or replaced This blower can become dangerous due to a potential windmill effect even though all electrical power has been turned off or disconnected The blower wheel should be carefully secured to prevent any rotational turning BEFORE working on any parts of the blower motor ass...

Страница 4: ...eters from the blower Any duct elbows located closer than 2 wheel diameters to the blower inlet or discharge WILL reduce the air performance and blower efficiency Any duct elbows near the blower discharge should be in the same rotational direction as the blower rotation Non Ducted Blower Inlet Any blower with no ducting on the inlet must have an inlet guard The blower should be located so the blow...

Страница 5: ...ay fuses or breakers should be used since the initial start up time for the blower motor although rare can be up to 10 seconds B Motors 1 DO NOT connect or operate a motor without reading the motor manufacturers instructions supplied with the blower The basic principle of motor maintenance is KEEP THE MOTOR CLEAN AND DRY This requires periodic inspections of the motor The frequency of the inspecti...

Страница 6: ... selected based on the atmosphere and or environmental conditions the motor will be operating in Consult the NEC National Electric Code and the NFPA National Fire Protection Association for the proper EXP motor Class Group and T Code required for your specific application and location NOTICE a All EXP motors have some type of thermal overload as required by UL Underwriters Laboratories Refer to al...

Страница 7: ... to a gradual rate of temperature increase not to exceed 15 F minute 8 C minute The same temperature limits are also important when the blower is experiencing a drop in temperature until the temperature drops down to 150 F 65 C Only when the entire blower has reached an equilibrium tempera ture of 150 F 65 C or less should the power be turned off 12 Make sure the power source connections to the bl...

Страница 8: ...end as per Fig 3 below After you have taken your vibration readings write them down in the spaces below and keep for future comparison OMM 23 1009 page 8 If the blower is going to be conveying material it is the users responsibility to periodically turn the blower off and lock out the power The blower wheel should then be checked for material build up and or erosion If material has built up on any...

Страница 9: ... CINCINNATI FAN OR OUR SALES OFFICE FOR YOUR TERRITORY TO DETERMINE IF THE UNIT WILL OPERATE SAFELY AT THE NEW CONDITIONS WARNING V ROUTINE INSPECTION MAINTENANCE Periodic inspection of all the blower parts is the key to good maintenance and trouble free operation The frequency of inspections must be determined by the user and is dependent upon the severity of the application BUT it should NEVER e...

Страница 10: ...through the motor and damage the motor bearings 2 Grinding off material for cast aluminum wheels If you are grinding on the wheel to remove material be very careful not to grind too much in one area That could affect the structural integrity of the wheel 3 Forward curved wheels Model LM only also known as squirrel cage or multivane wheels These wheels have balancing clips attached to individual bl...

Страница 11: ...Y PARTS CORRECTLY VII TROUBLESHOOTING Troubleshooting should only be performed by trained personnel Any potential electrical problems should only be checked by a licensed electrician All safety rules regulations and procedures MUST be followed Failure to follow proper procedures can cause property damage severe bodily injury and death DANGER PROBLEM CAUSE Excessive Vibration 1 Loose mounting bolts...

Страница 12: ...aintenance 2 The blower should be supported under each corner of its base to allow it to breath Supports 2 x 4 s timbers or railroad ties should be placed diagonally under each corner 3 If the equipment is to be stored for more than three 3 months the entire blower assembly must be loosely covered with plastic but not tightly wrapped 4 Storage Maintenance A periodic inspection and maintenance log ...

Страница 13: ... insulation resistance b DO NOT lubricate the motor bearings during storage Motor bearings are packed with grease at the factory c If the storage location is damp or humid the motor windings must be protected from moisture This can be done by applying power to the motor s space heaters IF AVAILABLE while the motor is in storage If the motor does not have space heaters storing it in a damp or humid...

Страница 14: ...to the replacement free of charge of parts returned at Purchaser s expense F O B Seller s plant and found to be defective by the Seller IN NO EVENT WILL SELLER BE LIABLE FOR SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER IN CONTACT TORT NEGLIGENCE STRICT LIABILITY OR OTHERWISE INCLUDING WITHOUT LIMITATION DAMAGES FOR INJURY TO PERSONS OR PROPERTY LOST PROFITS OR REVENUE LOST SALES OR...

Страница 15: ...1 For the parts drawing of all the standard components and specifications for the specific blower or fan that you have please contact our local Cincinnati Fan sales office for your area You will need to give them the serial number shown on the blower or fan nameplate so they can supply you the correct information Click on Contact a Sales Rep on our website for the name and contact information for ...

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