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86 Operation and Maintenance Manual
6
Use a 7/64" Allen wrench to remove the three mounting screws from the
reaction cell. Slowly pull the reaction cell back from the PMT housing. The
optical filter is located between the reaction cell and the PMT housing.
Remove the optical filter from the housing by tipping up the back of the
Detector, if necessary, and allow the filter to fall onto a soft cloth.
7 Inspect the o-rings and replace them if they show any wear.
Figure 23 Reaction Cell, PMT Housing and PMT Socket
HIGH
VOLTAGE
to power supply
SIGNAL
to amplifier
FILTER
PMT SOCKET
PMT HOUSING
REACTION
CELL
PMT
PMT SOCKET
Figure 24 Reaction Cell
PRESSURE
TRANSFER
LINE
SENSOR
O-RINGS
REDUCING
UNION
FROM OZONE
GENERATOR