BÜCHI Labortechnik AG
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19
8. Once the optics have been cleaned, reattach the light trap
and replace the 4 hex head screws. Make sure the light
trap has the proper orientation so the magnetic interlock
makes the proper connection. Refer to Figure 5.1 for
details. Carefully reconnect the light trap sweep gas
tubing.
9. Replace the instrument cover and tighten the cover
screws.
10. Reconnect the power cable.
11.
Resume normal operation of the unit. If the problem
persists, continue troubleshooting with the manual or
contact your local BUCHI Customer Service office which
can be found on the BUCHI website at: www.buchi.com.
5.5 FUSE REPLACEMENT
Only suitably qualified personnel
should carry out these adjustments.
Shock hazard: disconnect the power
cord before replacing the fuse.
Fire hazard: only use the same type
and rated CERTIFIED fuse
( 250V 5A F).
1. Power off the detector from the back panel and unplug the
power cord.
2. Gently squeeze the side tabs of the fuse drawer and pull
the fuse drawer straight out. Refer to Figure 5.2 for
details.
3. Remove the blown fuse and replace with the new fuse. Be
sure to use the appropriate fuse: 5 Amp 250V. Make
sure the replacement fuse is placed into the fuse slot on
the right side of the fuse drawer.
4. Replace the fuse drawer. Make sure the fuse inserts into
the fuse slot on the right side of the fuse block. The
correct slot has a metal contact inside the fuse block.
Figure 5.2: Model 3300 ELSD Fuse Block
Light Trap
Sweep Gas Connection
Drift Tube
Laser
Interlock
Figure 5.1: Optics Cleaning Procedure
Insulation
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