Grain Systems PNEG-634 - Manual (Page 21)

3. Installation
PNEG-634 2000 Top Dry Fan/Heater 21
Storage Chamber High-Limit Rotary Switch
1. Drill a 2" diameter hole through the sidewall 3' below the fan/heater.
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 plate 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 3O on Page 22 .
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 the conduit hole is facing down or is horizontal.
Figure 3N Storage Chamber Rotary Switch