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4 2 3 4 6 0 0 A N D 4 2 3 4 6 0 1 | K AT H A R O M E T E R P O W E R S U P P LY U N I T S | I M/4 2 3 4 6 0 0 R E V. E
6 Servicing
Fuse replacement
There are no serviceable components in the PSU; the only
servicing that can be performed is fuse replacement – see
Figure 8. The fuses must be replaced only with those stated in
the specification. If a fault occurs, return the PSU to the nearest
ABB Service Centre or to the factory for repair.
IMPORTANT (NOTE)
Suitable fuses may be obtained from ABB using the
following part numbers:
F1
0231555 (400 mA(F) cartridge).
F2 and F3
0231577 (250 mA (T) 1500 A hbc cartridge)
F4
0231599 1 A(F) 250 V
Figure 8 Replacing the fuses
Replace fuse(s)
3
6
F1
230 V
8
T1
115 V
10
TB1
F4
+
–
L N E
AUX 10V
F2 F3
4
Refit cover, connect to mains power supply and switch on.
1
Switch off and disconnect the
mains power supply
2
Remove the four securing screws
and lift off the cover
–
+
TB2
E
D
C
X
B
A
9
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