Document/Revision No. IM-EN-SDGEN2-BP 1.02 Effective: December 2, 2014
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TEMP (temperature)
Process temperature.
QF (quality factor)
Typically 30-100. If QF drops 20 units
below the normal level, perform a prism
wash test (see Commissioning checklist).
LED (exposure time)
Typically <30. If the LED value increases
significantly, perform a prism wash test
(see Commissioning checklist).
HD HUM (internal humidity%
of sensor)
If HUM HD rises above 50%, the system
issues an alarm to replace the desiccant.
For more information, see K-Patents PR-23
Instruction Manual.
Check the functionality of
wash system.
X
See Prism wash test in Commissioning
checklist.
Check the steam pressure.
X
Typically 5-6 bar (75-90 psi) over process
pressure.
Remove the sensor and
check the prism visually for
dirt and wear.
X
If the prism looks worn, run an nD
verification and replace the prism,
if needed. For more information on
nD verification, see
K-Patents PR-23
Instruction Manual
Inspect the check valve: clean
the small holes and see that
the valve sealing is intact.
X
Replace the check valve every 2 years. For
more information, see chapter
6.3 Check
Valve Maintenance
.
Clean the filter in the steam
connection line.
X
Verify calibration.
Do this as often as your own quality system
and local requirements demand.
Please use the attached Preventive Maintenance Inspection (PMI) Checklist for recording
the weekly preventive maintenance tasks.
6.2 Check Valve Maintenance
Check valve is one of the few moving parts in the wash system. Checking the valve sealing
and cleaning the small holes in case of dirt particles annually is essential.
Figure 19
Taking check valve apart for maintenance
6.3 Resetting SD Sensor System
If the SD sensor system needs to be reset, you can either
●
Switch the power off and back on again,
●
Restart the sensor through transmitter from MENU › SENSOR STATUS › SLOPE ›
SENSOR RESTART or
●
Press the reset button, as instructed below.
