Fluke 393 - How to Clean the Case; Battery Replacement

393/393 FC
Calibration Manual
26
To check backlight and LEDs:
1. Turn off the Clamp.
2. Press and hold I + ON (rotate control knob).
3. Continue to hold I and press for >1 s.
• The backlight turns on in a sequence of green, red, and then white
• F lights
• W and P turns on in the display
How to Clean the Case
Wipe the case with a damp cloth and mild detergent.
W Caution
Do not use abrasives, isopropyl alcohol, or solvents to clean the case or
lens/window.
Battery Replacement
XW Warning
To prevent personal injury and for safe operation of the Product:
• The battery door must be closed and locked before you operate the
Product.
• Remove all probes, test leads, and accessories before the battery door is
opened.
• Replace the batteries when the low battery indicator shows to prevent
incorrect measurements.
• When batteries are changed, ensure that the calibration seal in the battery
compartment is not damaged. If damaged, the Product may not be safe to
use. Return the Product to Fluke for replacement of the seal.