Fluke 189 - Manual (Page 79)

6-1
Chapter 6
Maintenance
Introduction
This chapter describes basic operator maintenance. For
calibration and performance test information, order the
187 & 189 Service Manual, PN 1584337.
General Maintenance
Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents.
Dirt or moisture in the terminals can affect readings and
can falsely activate the Input Alert feature. Clean the
terminals as follows:
1. Turn the meter off and remove all test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a new swab with alcohol. Work the swab around
in each terminal.
Testing the Fuses
Before measuring current, test the appropriate fuse as
shown in Figure 6-1. If the tests give readings other than
those shown, have the meter serviced.
W
Warning
To avoid electrical shock or personal injury,
remove the test leads and any input signals
before replacing the battery or fuses. To
prevent damage or injury, install ONLY
specified replacement fuses with the
amperage, voltage, and speed ratings shown
in Chapter 7.