9. Maintenance
9.1 Cleaning
To ensure the accuracy of measurement results, clean the transmitter when it gets
con
taminated. Remove leaves and other such particles from the precipitation sensor and
clean the transmitter carefully with a soft, lint-free cloth moistened with mild detergent.
Wipe with soft cloth or sponge and rinse with clean water.
Do not use solvents or abrasive sponges when cleaning painted surfaces.
9.1.1 Cleaning the Radiation Shield
Vaisala recommends that you clean the radiation shield once a year.
1. Clean the r
adiation shield with a soft cloth.
Do not paint the radiation shield.
2. If the radiation shield looks worn and yellow, you can replace it with a radiation shield
spare part (218817SP
).
9.2 Replacing PTU Module
• 3-mm Allen key
In demanding customer applications, Vaisala recommends changing the PTU module every
tw
o years.
WXT536 WXT535 WXT534 WXT533 WXT532 WXT531
✔ ✔ ✔
1. Turn o
the power.
Chapter 9 – Maintenance
147
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www.streamlinemeasurement.co.uk
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