Hach-Lange WTOS P-RTC - Manual (Page 37)

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Section 5 Maintenance
5.1 Maintenance schedule
D A N G E R
Multiple hazards
Only qualified personnel must conduct the tasks described in this section of the manual.
Interval Maintenance task
Visual inspection
Application-specific Check for contamination and corrosion
CF card 2 years
Replacement by manufacturer's service department
(
Section 8 )
Battery, type CR2032
Panasonic or Sanyo
5 years Replacement