CARNES VFBB Instrukcje instalacji, obsługi i konserwacji - Strona 6

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Figure 9: Solid Spherical Roller Bearings

This equipment must not be operated without proper guarding of all moving parts. While per-

forming maintenance be sure remote power switches are locked off. See AMCA Publication

410 for recommended safety practices.

Before starting: Check all set screws for tightness, and rotate wheel by hand to make sure it

has not moved in transit.

RELUBRICATION SCHEDULE (MONTHS) *

Ball Bearing Pillow Blocks

SPEED (RPM)

500

1000

SHAFT DIAMETER

1-3/16" thru 1-7/16"

1-11/16" thru 2-3/16"

2-7/16" thru 3-7/16"

1-1/2

3-15/16" thru 4-15/16"

2-1/2

*Suggested initial greasing interval - relubricate while running, if safety permits, until some purging

occurs at seals. Adjust lubrication frequency depending on condition of purged grease. Hours of

operation, temperature, and surrounding conditions will affect the relubrication frequency required.

1. Lubricate with a high quality NLGI No. 2 grease having rust inhibitors and antioxidant

additives, and a minimum oil viscosity of 500 SSU at 100

properties are:

Shell - Alvania No. 2

Mobil - Mobilgrease 28

2. Lubricate bearings prior to extended shutdown or shortage and rotate shaft monthly to aid

corrosion protection.

Figure 10: Split Spherical Roller Bearings

This equipment must not be operated without proper guarding of all moving parts. While per-

forming maintenance be sure remote power switches are locked off. See AMCA Publication

410 for recommended safety practices.

Before starting: Check all set screws for tightness, and rotate wheel by hand to make sure it

has not moved in transit.

RELUBRICATION SCHEDULE (MONTHS) *

Ball Bearing Pillow Blocks

SPEED (RPM)

500

1000

1500

SHAFT DIAMETER

1-7/16" thru 1-15/16"

4-1/2

2-3/16" thru 2-11/16"

4-1/2

2-15/16" thru 3-15/16"

4-1/2

3-1/2

4-7/16" thru 4-15/16"

2-1/2

5-7/16" thru 5-15/16"

2-1/2

1-1/2

*Suggested initial greasing interval - remove bearing cap and observe condition of used grease after

lubricating. Adjust lubrication frequency as needed. Hours of operation, temperature, and sur-

rounding conditions will affect the relubrication frequency required. Clean and repack bearings

annually. Remove old grease, pack bearing full and fill housing reservoirs on both sides of bearing

to bottom of shaft.

1. Lubricate with a multipurpose roller bearing NLGI 2 grease having rust inhibitors, antioxidant

additives, and a minimum of viscosity of 500 SSU at 100

properties are:

Shell - Alvania 2

Mobil - Mobilgrease 28

2. Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to aid

corrosion protection.

STATIC LUBRICATION

1. Use only highest quality mineral oil with a minimum viscosity of 100 SSU at the oil's operating

temperature. The oil's operating temperature is approximately 10

housing. SAE values having this viscosity at the following operating temperatures are: 150

SAE 20; 106

F - SAE 30; 180

F - SAE 40.

2. Static oil level should be at the center of the lowest most roller (Do not overfill).

3. Complete lubricant change should be made manually.

Figure 8 illustrates the decal for ball bearings, Figure 9 the

decal for solid pillow block spherical roller bearings, and

Figure 10 shows the decal for split pillow block spherical

roller bearings. Observation of the condition of the grease

WARNING

1500

2000

2500

3000

3500 4000 5000

1-1/2

1/2

F. Some grease having these

Texaco - Premium RB2

American - Rykon Premium 2

WARNING

Grease to

2000

2500

3000

3500 4000 be added

at each

Interval

3-1/2

2-1/2

1-1/2

1/2

2-1/2

1-1/2

F. Some greases having these

Texaco - Premium RB2

American - Rykon Premium 2

greater that the bearing's

expelled from the bearings at the time of relubrication is the

best guide as to whether regreasing intervals and amount of

grease added should be altered. This observation is partic-

ularly important when bearings operate continuously over

160

Greases are made with different bases. There are synthetic

base greases, lithium base, sodium base, etc. Avoid mixing

1/2

greases with different bases. They could be incompatible

1/2

and result in rapid deterioration or breaking down of the

grease.

All bearings are filled with grease before leaving the factory.

When the fans are started, the bearings may discharge

excess grease through the seals for a short period of time.

Do not replace the initial discharge because leakage will

cease when the excess grease has worked out. Sometimes

the bearing has a tendency to run hotter during this period

and one should not get alarmed unless it lasts over 48 hours

or gets above 220

amount of grease to purge the seals. Rotate bearings dur-

ing relubrication where good safety practice permits.

For bearings with oil lubrication, sight gauges are installed

so that a proper level can be reviewed and maintained. Sight

gauges should be read with bearing not rotating.

WHEEL AND SHAFT MAINTENANCE

Periodically inspect the shaft and wheel for dirt buildup,

corrosion, and signs of excess stress or fatigue. Clean the

components, and when appropriate, apply new coatings.

(Any addition of coatings or weld can create an imbalance.)

Check the balance of the assembly.

STRUCTURAL MAINTENANCE

All structural components or devices used to support or

attach the fan to a structure should be checked at regular

intervals. Vibration isolators, bolts, foundations, etc., are all

subject to failure from corrosion , erosion, and other causes.

Improper mounting can lead to poor operating characteris-

tics or fan fatigue and failure. Check metallic components for

corrosion, cracks, or other signs of stress. Concrete should

be checked to insure the structural integrity of the founda-

tion.

TROUBLESHOOTING GUIDELINES

Use current safety practices when investigating fan or sys-

tem performance problems. General safe practices and per-

F -

formance troubleshooting guidelines can be found in AMCA

publications 410 and 202, respectively, Fan application and

field measurement procedures can be found in AMCA pub-

lications 201 and 203.

TROUBLESHOOTING PERFORMANCE PROBLEMS

The below lists indicate possible areas to check when air or

sound values do not match expectations. Most fan problems

can be pinpointed to one of these common causes.

F. When relubricating, use sufficient