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< 11. Inspection and Maintenance >
11-2
IM 11M12D01-01E
11.1 Removing and Attaching the Front Cover
11.1.1 Removing the Front Cover
1) Loosen the 4 knob bolts by hand, and then loosen the lock screw with the Allen wrench supplied.
2) Remove the front cover by lifting up slightly then pulling away from the case.
11.1.2 Attaching the Front Cover
1) Attach the front cover, aligning the slots on the sides of the cover with the knob bolts on the case, and then
pull the cover down until it is seated firmly.
2) Hand tighten the knob bolts, and then securely tighten the lock screw with the Allen wrench supplied.
Knob Bolt
Lock Screw
F11-1E.ai
Figure 11.1 How to Remove/Attach the Front Cover
11.2 Hot Swap Function
The averaging converter features a function that allows a desired detector to be disconnected/ reconnected for
inspection or maintenance just by turning off the power of the relevant channel without system shutdown. This
function is called hot swap.
While power to a channel is being removed, the channel is automatically eliminated from the averaging groups
and does not affect any other channels. Since the output circuits for both the channel card and the heater of the
corresponding channel are mechanically cut off from the other circuits, maintenance and inspection work can be
done safely (Figure 11.2).
When the cannel is restored by the hot swap function after inspection or maintenance, the cannel card will be
included in the original averaging groups after warm-up period.
The individual analog output is held at a value preset in the “mA-output setup” during warm-up period.
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