ULTIMA XIR PLUS Cleaning Procedure

The presence of particulate matter, oil films, liquid water, or the residue from water drops on the two monitor windows can adversely affect its performance. The XIR PLUS sensor guard is designed to prevent foreign solids or liquids from reaching the monitor's optical system. Additionally, heating elements are incorporated into the device to prevent water condensation. Under severe conditions, however, some material may collect on these surfaces and it may be necessary to occasionally check and clean the windows.

While both windows are made of a highly durable material that is not easily scratched, avoid excessive pressure when cleaning them. Clean, cotton-tipped applicators are the most convenient tool to remove material collected on the windows.

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Use a dry applicator or one moistened with distilled water to wipe the window and remove dust.

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Use an additional clean, dry applicator to remove any residual water.

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Use an applicator moistened with isopropyl alcohol to remove heavy deposits of solids, liquids or oil films. Clean the window again with a second applicator moistened with distilled water; then, dry the window with a final applicator.

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Avoid using excessive amounts of water or alcohol in the cleaning procedure, and inspect the window to ensure that the entire surface is clean.

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The device will go into a “Low Signal” fault during cleaning with an analog output to 2.0 mA.

To clean the XIR PLUS sensor:

1.

Remove the Sensor Guard.

2.

Place an opaque object (piece of paper, cardboard, etc.) between the light source window and the mirror to completely obscure the light path for two to three seconds.

The ULTIMA X5000 analog output is in a fault condition while sensor is partially blocked.

The display will indicate “Low Signal'’.

While in “Low Signal” fault, the sensor will not respond to the presence of gas.

3.

When cleaning is done and the objects are removed from the sensor window, the device returns to normal operation. If water or isopropyl alcohol was used, allow the device to operate for 15 minutes to completely dry before replacing the sensor guard and continuing to monitor for combustible gas.

4.

Replace the sensor guard or flow cap.

When the cleaning process is complete, be sure to remove all objects from the light path. It is recommended to check the sensor’s response to zero and calibration gas after cleaning.