Clean The Instrument; Unlock The Controller Cover; Fuse Replacement; Battery Replacement - Hach SC4500 User Manual

7.1 Clean the instrument

Clean the exterior of the instrument with a moist cloth and a mild soap solution and then wipe the
instrument dry as necessary.
Note: The manufacturer recommends that the screen is locked during cleaning, or when a waterjet is used near the
controller.

7.2 Unlock the controller cover

Some outdoor conditions can cause a blockage in the controller cover. If necessary, use a flat
screwdriver to push at the hinge groove and unlock the controller cover. Refer to Figure 16.
Figure 16 Unlock the controller cover

7.3 Fuse replacement

Fuses are not user-serviceable items. The need for fuse replacement in controllers indicates severe
technical failure and is therefore considered to be a service activity. If a blown fuse is suspected,
contact Technical Support.

7.4 Battery replacement

The lithium ion backup battery is not user replaceable. Contact technical support for replacement.
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