Fluke 28 II Ex - Performance Tests

28 II Ex
Calibration Information
12
Fuse Replacement
XW Warning
To prevent possible electrical shock, fire, or personal injury,
use only specified replacement fuses.
Examine or replace the fuses in the Product as follows (See Figure 2):
1. Turn the rotary switch to OFF and remove the test leads from the terminals.
2. Refer to step 2 in the “How to Replace the Batteries” section to remove the battery
door.
3. Carefully lift out the fuse assembly (item ) from the fuse compartment.
4. Pry one end of the 11 A fuse loose, then lift the fuse out of its bracket (item ).
5. Install ONLY specified replacement fuses with the amperage, voltage, and speed
ratings shown in Table 2. The 440 mA fuse is attached to the fuse assembly. You
must use a new fuse assembly to replace the 440 mA fuse.
6. Install the fuse assembly into the fuse compartment.
7. Refer to steps 4 through 6 in the “How to Replace the Batteries” section above to
replace the battery door.
Table 2. Fuse Replacement
Description Qty. Fluke Part or Model Number
W Fuse, 11 A, 1000 V, FAST
1
803293
28 II Ex Fuse Assembly 1
4016494
W To ensure safety, use exact replacement only.
Performance Tests
XWWarning
To prevent possible electrical shock, do not do the performance
test procedures unless the Product is fully assembled.
The performance tests verify the complete operation of the Meter and the accuracy of
each function against its specifications. Do the performance tests bi-annually to make
sure the Meter operates to it specifications. If one or more of the tests shows a
measurement that is not between the high and low limits, do the adjustment procedure.
See the “Calibration Adjustments” section.
Note
In the performance tests, the Meter is referred to as the Unit Under Test
(UUT).