Preventive maintenance - PR53 - PR53AC - PR53AP - PR53GC - PR53GP - PR53M - PR53SD - PR53W

PR53 Series User Guide

Document code
M212898EN
Revision
E
Language
English
Product
PR53
PR53AC
PR53AP
PR53GC
PR53GP
PR53M
PR53SD
PR53W
Document type
User guide

PR53 process refractometers do not have wearing parts or periodically changeable parts. Depending on the process conditions, PR53 process refractometers may never need to be serviced.

There a few things that should be monitored:

Table 1. Preventive maintenance
Part Action
Prism Make sure that the prism is clean by monitoring the following:
Prism gasket Visually check that the prism gasket is intact. This is especially important with the hygienic devices' wetted parts.
Refractometer's internal humidity level Relative humidity indicates if any liquid has leaked inside the refractometer or if the internal drying capsule needs replacement. Typically the internal relative humidity should be < 50 %RH.
PR53AC and PR53AP flow cell The wash nozzle gasket must be changed to a new one if the wash nozzle is removed, for maintenance purposes, for example. The old gasket can break and pieces can fall into the process liquid. The new gasket needs to be lubricated. Use lubricant that is suitable for food industry applications.