22 . High-Performance Lambda Spectrometers Hardware Guide
Fuses
WARNING
To prevent potential injury to yourself and damage to the instrument,
switch OFF all instruments in the system and disconnect them from the
line power supply before you alter, or make any new, electrical
connections.
The fuses are located in a fuse holder at the rear of the instrument, as shown in Figure 4.
Figure 4 Rear view of the fuse holder
To change the fuses:
1. Switch off the instrument and remove the line power cord from the electrical supply.
2. Squeeze in and lever out the two lugs at each side of the fuse holder one at a time
using a flat-headed screwdriver.
3. Gently pull out the fuse holder, as shown in Figure 5.
Figure 5 Removing the fuse holder
4. Replace the fuses with new ones of the same type and rating (3.15 A time delay).
NOTE: The module has two fuses and you should always replace both at the same time,
even if only one blew, as the other may have been weakened.
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