Super Systems 13004 - Manual (Page 3)

SsiManual 4514 D 13004 Probe Conditioning System
INSTALLATION
The compact JIC box is provided with flanges, each having two 1/4" mounting holes. Locate the
box to within about 6 feet of the sensor, if possible. Avoid locations close to a source of
combustibles such as the vent pipe of an oil quench tank, or a natural gas fitting that could
develop a leak. Because the reference air pump aspirates air from its immediate vicinity to pump
to the probe reference air fitting, it is possible to experience a significant error in measurement
due to reaction of the combustible with air inside the probe. The result is a low reading of
percent carbon, which will cause the controls to add excess natural gas and overcarburize your
work piece. A purge valve maybe is connected to power through terminals 1054 and 1055 as
shown in Fig.1. This will accelerate the recovery by rapidly displacing the burnoff air with
furnace atmosphere.
OPERATION
With the system wired as illustrated in Fig. 1, and the power switch off, close the burnoff airflow
valve. Set the upper (burnoff) time (T1) to about 5 minutes, and the lower (cycle) time (T2) to
12 hours. Set the delay timer (TR106) to 5 minutes. Record the initial probe millivolts, then close
the power switch (SW-1) to start a cycle. Set the reference air flow to full scale, or slightly
higher. Observe the probe temperature and O2 millivolt reading, then increase the burnoff
airflow until the millivolt reading is less than 200 millivolts, preferably close to zero. The
temperature should be less than 50oF higher than it was initially. When the burnoff is complete,
observe the probe millivolts and note the time to recover to within 2 millivolts of the initial
reading. Set the delay timer, TR106, to this value. Repeat the burnoff by turning the power off,
then on. Observe the performance and adjust flows and times to values that cause the probe
millivolts to drop close to zero (or at least below 200mV) when the burnoff period is complete.
The ultimate goal is to provide the shortest practical burnoff time so the process is not out of
control for an appreciable period. If trim gas or air are added by motorized valves, and they are
not spring return types, the control interrupt terminals (Fig.1) can be used to interrupt power to
the motors so that control is maintained during burnoff. For time proportioning control with
solenoid valves, simply supply the power to the valves through the control interrupt terminals
1051 and 1053. When all flow and time parameters have been set observe the operation for a day
or two to make sure all is correct. Refer to your GOLD PROBETM instruction manual for a
complete description of the probe conditioning operation.
THANK YOU
We think you will be delighted with the performance of your probes once you have installed this
engineered conditioning system. If you have any questions, suggestions or problems, your
GOLD PROBETM team is only as far as your phone. Call us at 1-800-666-4330. We listen.
And we respond.
PROBE CONDITIONING SYSTEM MANUAL Page 2