Understanding Fan Relays and Multiple Speed Motors
$29.95 (DVD) Part #DVD 1995-03
$24.95 (VHS) Part #VHS 1995-03
This HVAC training video explains the popular PSC multiple speed motor used in HVAC/R equipment and how relays are used to control their operation. It also uses meters and graphics to explain the wiriing of the motor windings and how to test them and the accompanying relays.
Back