Grain Systems PNEG-900 - Manual (Page 23)

3. Installation
PNEG-900 Series 2000 Autoflow Fan/Heater and Control Installation Instructions 23
Wet Supply Rotary Switch
1. Drill a 2" diameter hole through the hopper bottom. If a flat bottom bin is being used for a wet storage
tank the Wet Supply Rotary switch would be mounted 45° up the sidewall from the center of the bin.
Example: If the wet storage bin is 18' in diameter then the Wet Supply Rotary switch would be
mounted 9' up the sidewall.
2. If the bin is 2.66" corrugation, the hole should be centered on an outside hill.
3. If the bin is 4.00" corrugation, the hole should be centered on an outside valley.
4. Use the mounting plate as a pattern and drill four (4) 3/8" holes through the sidewall at the switch
location so the place can be bolted to the bin.
5. Add foam weather strip around the top and side of the mounting plate.
6. Caulk the underside of the mounting plate, on all sides of the 2" hole and where the plate meets
the bin.
7. Bolt the mounting plate to the sidewall.
8. Attach the flex coupling to the rotary switch power pack using a roll pin.
9. Attach the 1 vane paddle to the flex coupling as shown in Figure 3N on Page 24 .
10. Apply teflon tape or pipe sealant (not included) to the rotary switch power pack threads and thread
the rotary switch power pack into the mounting plate coupling.
11. Make sure that the conduit hole is facing down.