GT-600/GT-800 Instruction Manual
59
Fuse Replacement
If, due to overload or improper operation, a fuse blows, it is necessary to obey
the following notes for replacement:
WARNING
Prior to replacement of blown fuse, the appliance tester GT-600/GT-800 must be
disconnected from all measuring circuits and mains supply cord must be
disconnected from mains supply.
Use only fuses specified and rated in technical specifications.
Use of unspecified fuses and in particular shorting fuse-holders is prohibited.
Spare fuses can be obtained in electric supplies wholesale shops or in our
factory service.
Fuse replacement, mains input fuse F1:
The fuse F1 (T 16 A (H) / 250 V, 5 x 20 mm) may be blown if display stays “dead”
after connecting the GT-600/GT-800 Tester to mains voltage and switching it on
by using the ON/OFF mains switch (4).
Fuse replacement, mains input fuse F2:
The fuse F2 (T 16 A (H) / 250 V, 5 x 20 mm) is blown if text “FUSE F2!“ appears on
the display. This message may appear in any test that requires presence of mains
voltage on the test mains socket. This fuse blows in case there is too high-power
load connected to test mains socket (current higher than 16 A).
Fuse replacement, R
PE
function fuse F3:
The fuse F3 (FF 6.3 A (H) / 250 V, 5 x 20 mm) is blown if text “FUSE F3“ appears
on the display in R
PE
, CORD or PRCD test. This fuse blows for example if test
points are connected to mains voltage during the test by mistake.
To replace the blown fuse proceed as follows:
1) Unscrew corresponding fuse holder cap (1, 2 or 10) by using an
appropriate screwdriver.
2) Remove the defective fuse and replace it with a new one (use only
equally rated type and value).
3) Replace the fuse holder cap.
☞
If any fuse blows several times (for example in case of operating
error) the instrument must be sent in to the service department in
order to be checked.
