Removing wash nozzle - PR-23 - PR-23-AC - PR-23-AP - PR-23-GC - PR-23-GP - PR-23-M - PR-23-RP - PR-23-SD - PR-23-W

PR-23 Series User Guide
Document code
IM-EN-PR23
Revision
K
Language
English
Product
PR-23
PR-23-AC
PR-23-AP
PR-23-GC
PR-23-GP
PR-23-M
PR-23-RP
PR-23-SD
PR-23-W
Document type
User guide
WARNING Always shut the main steam valve before performing any work on the wash nozzle. Make certain that the steam or water supply is shut off before starting nozzle removal procedure.
Remove the wash nozzle as instructed in the following illustrations. For more thorough instructions, see user documentation or visit the website to see the instructional videos on inserting and removing the sensor: vaisala.com/en/safe-drive-refractometer-pr-23-sd-manuals-safety-instructions-and-safety-videos.
  1. Close the steam line supply valve (1).
    1. STEAM: Remove the steam supply line (2) and the sensor flush flexible line (2) from the nozzle T-piece.
    2. WATER: Remove the water supply line (2) from the nozzle.
    3. Remove the special M5x10 nozzle guide locking screw (3) using a 5 mm Allen key. Be careful, process pressure will try to push the nozzle out from the process.
  2. Remove the safety pin (4).
    1. Slide the nozzle out from the process (5) until the guide plate stops it.
    2. Close the nozzle isolation valve (6) by turning the handle clockwise.
    3. Open the ¼" check port valve under the nozzle isolation valve (7).
      WARNING Only little process liquid should flow from the nozzle. If process liquid keeps on flowing, the nozzle isolation valve is damaged and it is not safe to remove the nozzle. Do not proceed with nozzle removal.
  3. Lock the isolation valve handle with the safety pin (1).
    1. Remove the special 5x10 guide plate screw (2) using a 5 mm Allen key.
    2. Remove the nozzle from the isolation valve completely (3).
    CAUTION The nozzle tip is hot and may be covered with liquor. It is recommended to rinse the nozzle tip and the isolation valve with hot water.