K-Patents PR-01-S - Manual (Page 48)

INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS) DOCUMENT/REVISION No. INM 1/14
Effective: May 15, 2009
46
6.3. DISPLAY MESSAGES
The diagnostic messages and the phase codes are listed in Table 6.30. The diagnostic messages are listed
by increasing priority. E.g. if we simultaneously have “Temp measurement fault” condition and "No sensor
signal" condition, the display message will be "No sensor signal".
NORMAL OPERATION:
If the CONC% display is not according to specifications, take samples and use Calibration Data Report,
Section 5.3. Also check that the prism surface is clean.
PRECONDITIONING:
Shown when the preconditioning valve is activated by the Relay Unit, Chapter 9.
WASH:
Shown when the prism wash valve is activated by the Relay Unit. The concentration output is locked (if the
HOLD function is active). The HOLD function can be inactivated from the keyboard, (Section 2.8). The
concentration display is never locked, but a large "WASH" will flash when the wash starts.
RECOVERY:
Shown during the time delay after end of prism wash when the concentration output is still locked.
HOLD:
Caused by input switch closure, when the switch has been configured as a Hold switch, Section 2.8.
HIGH INTERNAL HUMIDITY:
Caused when humidity inside the sensor is higher than 50%.
Action: Remove the sensor from the process line and check it, see Section 6.1.
HIGH INTERNAL TEMPERATURE:
Caused when the temperature inside the sensor is higher than 60 °C (140 °F).
Action: Improved air-cooling is recommended, see Section 3.1.
WASH STOP / TEMP. LIMIT:
Caused when the Wash stop is active and the process temperature is below temperature limit, Section 9.2. The
message is shown until wash succeeds or the RESET key is pushed.
LOW CONCENTRATION/NO SAMPLE:
Probably caused by exceptionally low concentration or empty process pipe.
Action: If sample determination indicates normal concentration, then check optical image, Section 6.5,
decision according to Figure 6.54.