Test Products International 712 - Manual (Page 32)

Appendix E: ERROR CODES & TROUBLESHOOTING
The 712 analyzer will display certain codes to let you know of a malfunction.
*Sensor replacement requires calibration gas.
Appendix D: INSTALLING THE OPTIONAL A773 OIL FILTER
When performing combustion tests on oil fired equipment it is important to use
the optional A773 oil filter to ensure stable readings. The A773 does not have to
be removed when working with other types of fuels.
PROCEDURE
1. Pull the yellow thermocouple out of the cord channel in the tubing up to the
cord stop.
2. Cut the tubing approximately 1 1/2 inches from the end of the A762 water trap / fil-
ter assembly.
3. Insert the A773 oil filter into the tube below the A762.
4. Cut the remaining piece of tube into a 1 1/2 inch piece and connect it onto the end
of the A773 oil filter.
5.. Press the thermocouple cord into the cord channel.
The A773 should be replaced when most of the pellets become discolored.
Code
Displayed
Code Definition Possible Causes Corrective Action
Flo
Err Pump not drawing sample at
correct flow rate. Blockage / kink in flue probe
hose.
Dirty or blocked filter(s).
Worn pump.
Check and rectify.
Replace filter(s).
Return to TPI for service.
InIt
O2
Err
Oxygen sensor failed to ini-
tialize Flue probe connected to 712
prior to power up.
712 did not purge completely
from last sample.
Worn or defective oxygen
sensor.
Disconnect probe and
restart.
Purge for 20 minutes and
restart.
Return to TPI for sensor
replacement or install new
sensor.*
Try manually initializing the
sensor. See Appendix G.
InIt
CO
Err Carbon monoxide sensor
failed to initialize. Flue probe connected to 712
prior to power up.
712 did not purge completely
from last sample.
Worn or defective carbon
monoxide sensor.
Disconnect probe and
restart.
Purge for 20 minutes and
restart.
Return to TPI for sensor
replacement or install new
sensor.*
Try manually initializing the
sensor. See Appendix G.
Lo
bat
Low battery. Battery needs to be charged. Charge battery. If the battery
won’t hold a charge, replace
the battery.
oFL Overflow indication. The
pressure being measured is
outside the maximum mea-
surement capability. Pressure being measured is
too high or low.
Pressure sensor damaged or
defective.
Remove pressure source.
Return to TPI for service.
oFL Overflow indication. The tem-
perature being measured is
outside the maximum mea-
surement capability. Temperature being measured
is too high or low. Remove pressure source.
oPEn Unable to read thermocouple
(temperature). Temperature probe not con-
nected to input.
Worn temperature sensor. Connect temperature probe
to analyzer.
Replace temperature probe
or flue probe.