K-Patents PR-23 Troubleshooting Guide - Manual (Page 9)

TROUBLESHOOTING GUIDE
FOR PR-23 ALL MODELS 9 (14)
January 9, 2015
K-PATENTS OY
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Postal Address: P.O.Box 77, FI-01511 Vantaa, Finland
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Street Address: Elannontie 5, FI-01510 Vantaa, Finland
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Tel. int.+358 207 291 570
Fax int.+358 207 291 577  [email protected]  www.kpatents.com  Vat No. FI03035575  Business ID 0303557-5  Registered in Helsinki
empty. Washing when the pipe is empty can by very corrosive to the prism, as there is no counter pressure
in the pipe.
3.1 Wash Recommendations
The other critical part of the wash is the wash medium characteristics, especially the temperature and the
pressure. Below you can find general guidelines for the wash parameters and pressures depending on the
wash medium and nozzle type. It is also recommended that the wash medium temperature should always be
higher than the process medium temperature to avoid any solid formation or crystallization.
Figure 8 Recommended wash pressures and times
3.2 Successful Wash
As the wash is essential part of the fully functional refractometer, regular testing of the prism wash is
recommended. The manual washing is be activated by pressing MENU  3 SENSOR STATUS  MANUAL
WASH. The optical image should change clearly during the wash. Also the temperature reading should