Greenheck Fan APEX-200 warranty Motors, Wheel & Fasteners, Bearings

Routine Maintenance

Motors

Motor maintenance is generally limited to cleaning and lubrication. Cleaning should be limited to exterior surfaces only. Removing dust and grease buildup on the motor housing assists proper motor cooling. Never wash- down motor with high pressure spray. Greasing of motors is only intended when fittings are provided. Many fractional motors are permanently lubricated for life and require no further lubrication. Motors supplied with grease fittings should be greased in accordance with the manufacturer's recommendations. When motor temperature does not exceed 104°F (40°C), the grease should be replaced after 2000 hours of running time.

Wheel & Fasteners

Wheels require very little attention when moving clean air. Occasionally oil and dust may accumulate on the wheel causing imbalance. When this occurs the wheel and housing should be cleaned to ensure smooth and safe operation. Inspect fan impeller and housing for fatigue, corrosion or wear.

Routinely check all fasteners, set screws and locking collars on the fan, bearings, drive, motor base and accessories for tightness. A proper maintenance program will help preserve the performance and reliability designed into the fan.

Bearings

Shaft bearings are the most critical

Recommended Bearing Lubrication Schedule for APEX Fans

moving part of a fan. Therefore,

Relubrication Schedule in Months*

special attention should be given to

keeping the bearings clean and well

Fan

Bearing Bore (inches)

1⁄2-1

1 1⁄8-1 1⁄2

1

5⁄8-1 7⁄8

1 15⁄16 -

2 7⁄16 -

3 3⁄16 -

3 15⁄16-

4 15⁄16 -

lubricated. Proper lubrication

RPM

2 3⁄16

3

3 1⁄2

4 1⁄2

5 1⁄2

provides for reduction in friction and

750

6

5

4

3

3

2

2

1

wear, transmission and dissipation

1000

6

4

3

2

2

1

1

0.5

1250

5

3

2

1

1

0.5

0.5

0.25

of heat, extended bearing life and

1500

5

2

1

1

0.5

0.5

0.25

0.25

prevention of rust.

* Suggested initial greasing interval is based on 12 hour per day operation. For continuous (24 hour)

In order for a lubricant to fulfill these

operation, decrease greasing interval by 50%.

tasks, the proper grease applied at

- For ball bearings, add 1-2 shots of grease up to 2 inch bore sizes, and 4-5 shots of grease above 2 inch

bore sizes with hand grease gun.

regular intervals is required. See the

- For roller bearings, relubricate with 4 shots of grease up to 2 inch bore size and 8 shots for 2-5 inch

recommended bearing lubrication

bore size.

- Adjust lubrication frequency based on condition of purged grease.

schedule. If unusual conditions

- A high quality lithium base grease conforming to NLGI Grade 2 consistency, such as those listed below,

exist, such as temperatures below

should be used.

32°F, temperatures above 200°F,

MOBILITH SHC 220

TEXACO MULTIFAK AFB2

SHELL ALVANIA #2

moisture, or contaminants - more

MOBILITH AW2

TEXACO PREMIUM RB

EXXON UNIREX N2

frequent lubrication is required.

WARNING: Lubricate bearings prior to periods of extended shutdowns or storage and rotate shaft monthly to

With the unit off, add grease very

aid in preventing corrosion. If the fan is stored more than three months, the bearings should be

purged with new grease prior to start-up.

slowly with a manual grease gun

until a slight bead of grease forms at the seal. Be careful not to

unseat the seal by over lubricating or using excessive pressure. A

guide to the amount of grease to be used is to fill 30% to 60% of

available space in the bearing and housing. Never mix greases

made with different bases. This will cause a breakdown of the

grease and possible failure of the bearing.

In addition to lubricating the bearings at specified intervals, set screws in the bearing collars should be checked for tightness. A bearing collar which has loosened will cause premature failure of the fan shaft. Fasteners attaching the bearings to the drive frame should also be checked.

19®