RKI Instruments Pioneer 4W - Manual (Page 40)

36 • Maintenance Pioneer Gas Monitor Operator’s Manual
Replacing Components
This section describes procedures to replace the analyzer card and fuses. To replace other
components of the Pioneer, contact RKI Instruments, Inc., for further information.
Replacing the Analyzer Card
This section describes the procedure to replace the analyzer card.
CAUTION: Removing or plugging in an analyzer card with the power on may damage the
analyzer card or the Pioneer’s main circuit board.
1. Place the Pioneer’s power switch in the OFF position.
2. Open the housing door of the Pioneer, then remove the analyzer card from the
u-shaped guide.
3. Plug the replacement analyzer card into the guide.
NOTE: The components of the analyzer card face left when the card is installed correctly.
4. Place the power switch in the ON position, then verify that the pilot light on the
replacement analyzer card is flashing.
5. Close and secure the housing door.
Replacing the AC Fuse
This section describes the procedure to replace the AC fuse.
1. Turn off or unplug all incoming power to the Pioneer at the power source end.
2. Place the Pioneer’s power switch in the OFF position.
3. Open the housing door of the Pioneer.
4. Use a flat-blade screwdriver to rotate the fuse holder 1/4 turn counterclockwise.
The fuse holder releases from the socket.
5. Remove the fuse holder from the socket, then remove the fuse from the fuse holder.
CAUTION: Verify that the replacement fuse is the same type and rating as the fuse you are
replacing.
6. Install the appropriate replacement fuse in the fuse holder, then place the fuse holder
in the socket.
7. Push the fuse holder into the socket, then turn the fuse 1/4 turn clockwise to secure
the fuse holder in the socket.
8. Plug in or turn on all incoming power to the Pioneer at the power source end.
9. Place the Pioneer’s power switch in the ON position, then verify that the PILOT light
is on.
10. Close and secure the housing door.