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MAINTENANCE
Maintenance
Do not attempt maintenance on fan until the electrical supply has been completely disconnected. If a service switch has
not been provided, remove all fuses from the circuit and lock the fuse panel so they cannot be accidentally replaced.
Lubrication is a primary maintenance responsibility. Check all bearings periodically. Inspect belts for tightness. If the fan
is installed in a corrosive or dirty atmosphere, periodically clean the centrifugal wheel, inlet, motor housing and other
moving parts.
Fan Shaft Lubrication
Fan shaft bearing pillow blocks are furnished in either the prelubricated sealed for life type or the greasable type
depending on what was ordered. The prelubricated type requires no servicing for 7 to 10 years of normal use, and
the greasable type are factory greased eliminating the need for greasing initially. Follow the lubricating schedule
recommended by the factory. This practice should not supersede any safety considerations.
Lubrication Schedule
Always follow the bearing manufacturer’s recommended lubrication schedule. If none is available, use the following
general schedule:
1.
Under average conditions where ambient temperatures do not exceed 120°F, lubrication is required 1 to 2 times a
year.
2.
Under dirt laden atmosphere where there is a temperature range of 120°F to 150°F, lubrication is required from 3
to 6 times a year.
3.
Under extreme temperature conditions and extremely dirty atmospheres, lubrication should be scheduled at least
once or twice a month.
4.
Belt drive units maximum temperature should not exceed 160°F. Direct driven models have temperature range
stamped on motor.
Motor Lubrication
In general, standard motors are furnished with prelubricated, sealed-for-life ball bearings which require no lubrication
for 7 to 10 years of normal service. Where motors have been ordered with greasable bearings, these bearings are factory
lubricated and require no attention for one year under normal conditions. If grease relief fittings are provided, remove
them when performing maintenance to allow grease to flow out. Whenever possible, apply grease while the motor
is running. This practice should not supersede any safety considerations. DO NOT OVERGREASE, as most lubricants
deteriorate motor windings, thereby reducing motor life.
Use low pressure grease guns only. High pressure guns tend to blow out or unseat bearing seals, leaving the bearing
open to collect grime, dust and foreign particles.
RECOMMENDED LUBRICANTS
Manufacturer
Product
Temperature Range
BP
LG-#P-1
Below 32°F
(0°C)
Gulf
Gulfcrown EP-1
Imperial Oil
Unirex EP-1
Shell
Alvania R-1
BP
Energrease, MPMK11
32°F to 150°F
(0°C to 66°C)
Gulf
Gulfcrown EP-2
Imperial Oil
Unirex EP-2
Shell
Alvania R-3
Sun Oil
Sun Prestige 42
Texaco
Regal AFB2
