Maintenance & Repair
44
Cleaning Flow
Switch
Inspect and clean the flow switch as needed
Mineral build-up and/or debris within the flow switch can occur and may
affect burner operation if not periodically cleaned. Mineral build-up and/or
debris can stop the movement of the shuttle inside the flow switch body.
Shuttle movement is important because the burner will not fire if the shuttle
does not move. The shuttle movement actuates a switch inside the flow
switch housing which allows the burner to fire during spray mode.
1) Disconnect the swivel fitting from elbow to the inlet of the coil
2) Disconnect the whole flow switch assembly including the swivel and
removable outlet fitting where the brass body connects to hose or tee
depending on model
FIG02333
Figure 18
Removable
Outlet
Fitting
Brass Body
Swivel
Fitting
Figure 19
