Re: Ducting for recirc fan
The test worked as I hoped. If anyone wants to turn on their recirculating fan at a given temperature(like after the powder flows out) you can do this via the alarm contacts on most pids. With my pid(TC-408) I set AH1 to 200 degrees and AL1 to 195 degrees. I ran a hot feed to contact #4 and a feed from contact #5 to the + side of the fan motor(4 & 5 are the alarm J1 contacts). When the oven hit 200 the fan came on. My pid has a 3amp limit to its switching capacity, but that's plenty for the fan.
Last edited by ed_denu; 03-20-2008 at 05:35 PM.
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