Publicité
Les langues disponibles
Les langues disponibles
64
РМ 2522
VIII. Access
The opening of parts, ог removal of covers, is likely to expose live conductors.
The instrument should therefore be disconnected from all voltage sources before any opening
of parts or removal of covers is started.
During and after dismantling, bear in mind that capacitors in the instrument may be still
charged even if it has been separated from all voltage sources.
USE A WELL-FITTING CROSSHEAD SCREW-DRIVER TO DISMANTLE THE INSTRUMENT
TO PREVENT THE CROSS-SLOTTED SCREWS FOR DAMAGE.
УІШ-1.
DISMANTLING
VIII-1.1.
Top cover
Loosen both screws "А"
(Fig. 21)
Lift the cover at the rear and pull it out of the front panel (Fig. 22 )
To refit the cover push the snaps in the front panel (Fig. 23 )
Keep pushing in the direction of the front panel and smoothly push it down at the rear.
ATTENTION:
- First place the bearing handle into bottom cover.
- Pay attention that the snaps are proper fitted in the front panel.
VIII-1.2.
Bottom cover
Removing and refitting of the bottom cover can be done in the same way as the top cover.
VIll-2.
FUSES
Make sure that only fuses with the required current rating and of the specified type are used.
The use of repaired fuses and the short-circuiting of fuseholders
is prohibited.
УН|-2.1.
Fuse VL101
Mains fuse VL101
is mounted inside on the printed circuit board (Fig. 9 , page 48)
The rating of the mains fuse should be: - 220 V + 15%
:
100 mA
slow blow
-110V
+ 15%
:
200 mA slow blow.
УП-2.2.
Fuse VLI
In the resistance circuit fuse VLI will protect IC101p + R105 + R107. If the current exceeds
125 mA the fuse will blow. Required fuse: 125 mA fast. glass fuse.
The fuse is mounted in the "VQ" input terminal (Fig. 10, page 48).
VIII-2.3. Fuse VL2
In the current circuit fuse VL2 is mounted to protect the shunt resistors. If the current exceeds
2.5 A the fuse will blow. Required
fuse 2.5 A fast glass fuse.
The fuse is mounted in the "A" input terminal (Fig. 10, page 48)
Publicité
