Hello,

I'm looking for the service manual for Varian gc 3300 or mayby someone help me resolve my problem. I want to check oven fan motor, but I see 4 wires: braun, white, black, yellow/green (ground). I compare it with the fan motor from Varian 3800 and there are 3 wires black, white and yellow/green. What is the brown wire for in Varian 3300?

Regards
Greg