Disk-On-Chip Replacement Procedure; Replacing The Reference O Scrubber - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual

11.6.2. Disk-on-Chip Replacement Procedure

1. Replacing the Disk-on-Chip, generally will cause all of the instrument
configuration parameters to be lost. Make notes of the Range, AutoCal, Analog
output, serial port and other settings before replacing the Chip.
2. Turn off power to the instrument.
3. Fold down the rear panel by loosening the thumbscrews on each side.
4. Locate the Disk-on-Chip in the rightmost socket near the right hand side of the
CPU assembly. Remove the IC by gently prying it up from the socket.
5. Reinstall the new Disk-on-Chip, making sure the notch in the end of the chip is
facing upward.
6. Close the rear panel and turn on power to the machine.
11.6.3. Replacing The Reference O
11.6.3.1. Standard Scrubber
1. Turn off power to the instrument.
2. Remove instrument cover.
3. The Reference Scrubber is a blue colored canister located at the rear of the
Measure/Reference Valve Assembly. See Figure 3-5.
4. Disconnect the top 1/8" Brass tube fitting from the scrubber.
5. Carefully remove the scrubber from the retaining clip.
6. Remove the bottom 1/8" Brass tube fitting from the scrubber.
7. Perform the above steps in reverse to install the new scrubber.
8. The new scrubber should be allowed to run in the instrument for at least 24 hrs
after which the instrument should be re-calibrated.
P/N 04316 Rev: B
TROUBLESHOOTING & REPAIR PROCEDURES
Scrubber
3
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