Wash Nozzle Removal - Vaisala K-PATENTS PR-23 Series Instruction Manual

190

11.6.2 Wash nozzle removal

Warning! Always shut the main steam valve before performing any work on the wash
nozzle.
1
WARNING
Make absolutely certain that
the steam supply is shut off
before starting nozzle
removal procedure
CLOSE
1
2
2
CLOSE
!
5
3
2
3
WARNING: Make absolutely certain that the
steam or water supply is shut off before
starting nozzle removal procedure.
1 Close the steam line supply valve (1).
2.1 STEAM: Remove the steam supply line (2)
and the sensor flush flexible line (2) from the
nozzle T-piece.
2.2 WATER: Remove the water supply line (2)
from the nozzle.
3
Remove the special M5x10 nozzle guide
locking screw (3) using a 5mm allen key. Be
careful, process pressure will try to push the
nozzle out from the process!
4 Remove the safety pin (4).
5 Slide the nozzle out from the process (5)
until the guide plate stops it.
6 Close the nozzle isolation valve (6) by
turning the handle clockwise.
4
6
7 Open the 1/4'' check port valve under the
nozzle isolation valve (7).
Note: Only little process liquid should flow
from the nozzle. If process liquid keeps on
7
OPEN
flowing, the nozzle isolation valve is damaged
and it is not safe to remove the nozzle. Do not
proceed with nozzle removal.
1 Lock the isolation valve handle with the
safety pin (1).
2 Remove the special 5x10 guide plate screw
(2) using a 5mm allen key.
3 Remove the nozzle from the isolation valve
1
completely (3).
PR-23 instruction manual