Response Electronics CL6011B Spezifikationen Seite 27

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3-1Card Removal, Cleaning, and Installation
Oiginal — December 1991 UM4.6:CS6003
3 Card Removal, Cleaning, and
Installation
3.1 Scope
This section describes preventive maintenance procedures used with
circuit cards in the PROVOX instrumentation system.
Note
Preventive maintenance procedures should be
performed on a regular schedule. This schedule is
dictated by the user’s process, availability of
backup systems, and other site specific variables.
Preventive maintenance schedules in this document require an
environment maintained in accordance with guidelines given in the
installation planning notes on planning the installation, and
environmental conditions for instrumentation systems. If the operational
environment does not meet these standards, preventive maintenance
procedures should be done at a higher than recommended frequency.
3.2 Card Removal Procedure
Use the following procedure when removing the I/O cards or the buffer
card from the I/O file.
Step 1:
Open the front door of the cabinet containing the card being
replaced.
Step 2: Make sure the system is halted.
Step 3: Remove the buffer card in the I/O file containing the card being
removed.
Step 4: Remove all power to field wiring connected to the termination panel
of any I/O card being removed.
Step 5: Remove and label all field wiring attached to the I/O card being
removed. Remove an retain the two retaining screws on the
termination panel.
3
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