Panametrics GF868, Руководство по обслуживанию

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Appendix B. Optional Enclosures
44 DigitalFlow™ GF868 Service Manual (1 and 2-Channel)
1. After disconnecting the main power to the meter, remove the top panel from the enclosure by removing the four
screws indicated.
2. Using a chip puller, remove the EPROM from its socket. If a chip puller is unavailable, a straightened paper clip
may be used in the notches at opposite corners of the socket. Gently pry the EPROM up, a little at a time, at each
notch until it comes free.
3. Make sure that the beveled corner on the new EPROM is aligned with the beveled corner of the socket and place
the EPROM into the socket.
4. By applying equal pressure on all four corners, gently press the EPROM into the socket until it is fully seated. Do not
strike the EPROM or apply excessive force during this procedure.
5. After checking for any loose hardware that may have fallen into the enclosure, reinstall the top panel on the
meter and secure the panel in place with the four screws previously removed.
The Model GF868 flowmeter may now be placed back into service. Reconnect the main power and resume taking
measurements.
Note: Be sure to record the EPROM replacement in Appendix A, Service Record.
WARNING! The main power to the Model GF868 must be disconnected before proceeding.
CAUTION! The EPROM is easily damaged by static electricity. Before handling the new chip,
touch a grounded metal object to discharge any built-up static electricity and
avoid touching the leads on the side of the chip.