
24 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
The following is a list of components and their functions.
Igniter
The Winslow™ PI40  insert comes equipped  with an  automatic igniter 
for lighting the fuel when the insert  is in the lighting mode. The igniter 
superheats air that  is pulled  through the burn  pot by the  combustion 
blower to light the fuel. The igniter remains energized for the first seven 
minutes of the lighting sequence.
Vacuum Switch
The Winslow PI40 insert has a vacuum switch located behind the left door, 
fastened to the base (see A in Figure 44). If there is a leak in the firebox 
created by the front door being ajar or a blocked flue, the vacuum switch 
will sense it and cause the insert to go into a shutdown mode.
Auger and Auger Motor
The 1.25 RPM auger motor (B in Figure 22) turns the auger lifting pellets 
up the auger tube. The pellets are then dropped down a tube and into the 
firepot. The auger is controlled by the control board.
Over Temperature Snap Switch
(Opens at 225F) This switch is installed on the convection blower (see C in 
Figure 44) and shuts the insert down if it senses excessive temperatures. 
This snap switch has a reset button on it and will not allow the insert to 
start up until the reset button has been pushed.
Proof of Fire Snap Switch
(Closes at 140° F) This switch is installed on the combustion blower and 
shuts the insert down if it does not detect fire in the burn pot.
Convection Blower Snap Switch
(Closes at  120°  F)  This  switch is  installed  on  the  right rear  of  the 
firebox and turns the convection  blower on when the insert  gets up to 
temperature.
A
Room Air 
(Convection) Blower
B
C
Combustion 
Blower
Figure 43
Figure 44
COMPONENT INFORMATION