Testboy TB 4000 Manual De Instrucciones página 25

Maintenance
The instrument does not require special maintenance when used as specified in these operat-
ing instructions.
Cleaning
Use a damp cloth and mild household detergent to clean the instrument should it become
soiled through daily use. Never use harsh cleaning agents or solvents to clean the instrument.
Battery replacement
Replace the batteries when the battery symbol
leads from the instrument before changing the batteries!
Remove the screws at the back, open the battery compartment and remove the discharged
battery. Insert new batteries (2 x 1.5V AA). Refit the battery compartment and secure with
screws.
Only use the batteries specified!
Batteries must not be disposed of in domestic waste! Observe the statutory regu-
lations pertaining to disposal!
Changing the fuse
Remove the screws at the back, open the battery compartment and remove the fuse. Insert a
new fuse (F 10A). Refit the battery compartment and secure with screws.
Only use the fuses specified!
The following measurement categories have been de-
fined in accordance with EN 61010-1:
Measurement category CAT II
Measurements on circuits that are directly wired to the mains, via plugs in the home, office and
laboratory.
Measurement category CAT III
Measurements on building installations: fixed consumers, distributor connection, equipment
fitted permanently to the distributor.
Measurement category CAT IV
Measurements at the source of the low voltage installation: meters, primary surge protection,
mains connection
®
Testboy TB 4000
appears on the display. Remove the test
Operation
25