Figure 3-2b: BMK1500 – 6000 Air/Fuel Valve In Purge Position
5. Next, the Blower Proof and Blocked Inlet switches close (Figure 3-4a and 3-4b). On the Ignition
Sequence screen the Purging indicator turns grey while purging is underway (Figure 3-3) and
Purge Timer displays the purge cycle’s elapsed time in seconds.
Figure 3-3: Ignition Sequence Screen – Purging
Figure 3-4a: BMK750 & 1000 Blower Proof Switch