K-Patents PR-23-SD Generation 1 - Manual (Page 13)

Safe-Drive™ Process Refractometer PR-23-SD Best Practices, Generation 1
© Copyright K-Patents 2013. All rights reserved.
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2. Tighten the large nozzle
nut ( 1).
NOTE: Make sure the valve
orientation is correct.
3. Attach the safety cover
over the nozzle nut ( 2).
4. Tighten the safety cover
M5 Allen screw ( 3).
5. Attach the nozzle guide
plate ( 4).
6. Tighten the guide plate
with two (2) M5x10
screws to the welding
body (
5).
7. Tighten the M5x8 screw
to nozzle ( 6)..
8. Attach the steam line ( 1).
9. Open the steam
connection ( 2).
4.6 Installing Steam Prism Wash System
In black liquor service material deposit, scaling or coating may occur on the prism surface.
To avoid this, you need to install an integral prism wash with steam that uses the retractable
nozzle included in the SDI valve.
Important Steam Prism Wash Considerations
● The distance from the steam nozzle on the SDI valve to the steam shut-off valve
should be kept as short as possible to avoid condensate. The recommended length of
the distance is 0.6 m (2 ft) or less.
● Separate or isolate the power to the solenoid from the power to the transmitter by
installing a safety switch. This enables the steam wash to be serviced without having
to power down the whole SD sensor system.
● Pipe the steam trap properly to drain so that the trap is not blowing hot steam.
● Steam piping upstream of shut-off valve is ½” or larger.
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OPEN