Flame Photometric Detector (Fpd); Clean/Replace Photomultiplier Tube (Pmt) - HP 5890 SERIES II Service Manual

FLAME PHOTOMETRIC DETECTOR (FPD)

Clean/Replace Photomultiplier Tube (PMT)

HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER
CORD IS CONNECTED. AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY
DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT.
1. Set the main power line switch to the off
position.
2. Disconnect the power cable from its receptacle.
3. Remove the thumb- screw holding the detector
cover to the top of the HP 5890.
4. Facing the instrument, rotate the detector cover
to your right until the tab on the bottom left
edge of the cover comes free.
5. Raise the back of the cover and slide it towards
the rear of the instrument.
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