Grain Systems PNEG-119 - Manual (Page 9)

PNEG-119 Inline Centrifugal Fan 9
3. Installation Instructions
Fan Pad Location
Fan pad should be poured level with top of bin foundation for all Inline Fans 18" through 28" diameter. Fan
should be centered on center line of bin. Front of pad should be perpendicular to bin wall. Recommended
thickness for fan pad is 4" minimum.
IMPORTANT: Fan pad and fan must be level and smooth for proper operation. Vibration problems can
result from improper fan leveling.
Figure 3A Fan Pad Installation Guidelines
Check List before Installing the Fan
1. One of the most important factors for installation is providing adequate power to run the unit.
Undersized wire can lead to voltage drop and can cause motor overheating and shortened life.
Therefore, it is necessary to know the distance from the unit to available transformer and the
horsepower of the fan unit. These two (2) factors will determine the size of wire needed for efficient
operation. See fan specifications on
Page 11 .
2. It is recommended to contact the local power company and having a representative survey the
installation so the wiring is compatible with their system and adequate power is supplied to
the unit.
3. Each fan motor should be wired through a fused or circuit breaker disconnect switch.
4. Refer to fan specifications on Page 11 for the recommended slow blow fuse or breaker size to use
when installing the particular fan.
5. Standard electrical safety practices and codes should be used. (Refer to National Electrical Code
Standard Handbook by National Fire Protection Association.)
6. A qualified electrician should make all electrical wiring installations.
TR-6918 and TR-6920
A = 32" for fans without heaters
A = 55" for fans without heaters
TR-4734
A = 21"
TR-7048
A = 45" for fans without heaters
A = 68" for fans with heaters