Changing A Fuse - bon E-30 Instruction Manual

8 Maintenance and care

8.3.3 Changing a fuse

Only use fuses indicated in table 1 with the listed type (T) fuse values.
Before replacing a fuse, always pull out the mains plug or disconnect the refraction unit by
pressing the on/off-switch of the wall terminal box. Ensure that the refraction unit is cut off
from the electric supply. To reach fuses F3-F10 and F13, open the electric component casing
of the refraction unit underneath the work table by turning the knurled screws. When you
undo the screws, hold the casing fast with one hand. To reach the circuit boards, hinge down
the casing carefully.
Component Fuse
Refraction uni
Refraction unit
Examination chair
Ambient light
Main transformer
Supply voltage
Table and hand-held
devices
Motors
Spotlight
Digital board
Wall terminal box
6 Vpower pack (wall
terminal box)
Dimmer
Table 1: Fuses of refraction unit
On the next page, the fuse locations on the circuit board are indicated.
Fuse value/A
F1 6.3
F2 6.3
F3 3.15
F4 5
F5 5
F6 1
F7 8
F8 3.15
F9 3.15
F10 1.0
F11 1.0
F12 0.5
F13 2
bon E-30
Main fuses of refraction unit on mains (w/o wall terminal box)
Fuses are on wall terminal box in versions with wall terminal
box.
Circuit board 2
Circuit board 2
Circuit board 2
Circuit board 2
Circuit board 2
Circuit board 2
Circuit board 2
Circuit board 1
Wall terminal box if available
Wall terminal box if available (option
Protection casing for electric components in dimmer
Location
18/27