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TELEDYNE INSTRUMENTS
Maintenance 460L Instruction Manual
48 05228 Rev B
PRINTED DOCUMENTS ARE UNCONTROLLED DCN 5164
9.2.2. Replacing the Coalescing Membrane
The coalescing filter contains a replaceable Teflon
®
coalescing membrane. Under normal
operating conditions, this membrane should last for a long time, however a significant reduction in
the gas pressure measured in the O3 cell might indicate that this membrane needs replacement.
To replace the filter membrane:
1. Disconnect ozone supply line from the monitor and shut off flow to the monitor using
needle valve on front panel.
2. Remove inlet and exit fittings from scrubber body and cap.
3. Remove the orange cap from the top of the coalescing filter.
4. Remove the old membrane. It is located on the underside of the cap assembly
(see Figure 9-4).
5. Insert the new membrane into the cap assembly.
6. Tightly secure the cap back on the filter.
7. Reconnect the O
3
supply line adjust flow to the monitor.
8. Open the flowmeter valve and adjust the gas flow to the appropriate rate.
Figure 9-4 Replacing the Membrane of the Optional H
2
O Coalescing filter
Replacement filter elements can be ordered from TAPI (P/N 036750000).