OPERATION

 

Once you have conducted the brief startup procedure outlined here, you need only sit back and enjoy safe, effective probe conditioning. No special programs to write, no scheduled operator routines.

 

With the system wired as illustrated in Fig. 1, furnace at normal operating temperature, and the valve on the burnoff air flowmeter closed; set the timer to 3 minutes.   Turning the power on will immediately start a timing cycle.  Observe the probe temperature and O2 millivolt reading, and increase the burnoff airflow until the millivolt reading is below 200 millivolts, preferably close to zero.  The temperature will pass through a maximum as the flow is increased, then drop to a value close to the normal probe temperature. Burnoff will now occur each time the inner door is opened, and then closed. A manual burnoff can be conducted simply by turning the power off momentarily to reset the timer.

 

Refer to your   GOLD PROBE^TM instruction manual for a complete description of probe conditioning theory.