Service manual

MDS E-SCAN MPR E-SCAN OPERATION/ PURGE SELECTION

During the purge process, all

readings and analog output are

“on hold” or frozen.

2.6 Purge Selection

Selecting the “Purge”

option from normal mode

adds purge information to the

current display. When

purging, the ‘H’ system

indicator (measurement hold)

is displayed to the far right of

the displayed reading, and the

measurement voltage as well

as the current purge mode is

displayed at the bottom. The

timing information for

purging is set in the

calibration limits menu.

Each purge operation mode can be aborted before the selected time expiration by

selecting the ESC button from the Front Panel at which time the system will resume

normal operation. Following the termination of the purge cycle, the ‘H’ indicator and the

information at the bottom is removed. With intelligent cleaning activated, successive

purge cycles will be started if the previous purge was unsuccessful. This will continue for

three entire purge cycles, at which time a ‘P’ system indicator is displayed if all purges

were unsuccessful.

The purging consists of three internal modes:

1. Condensate Drain Time: This time allows any condensation to drain before steam

cleaning if steam is being used as the cleaning agent.

2. Prism Clean Time: This is the actual time during which cleaning of the prism occurs.

3. Hold Delay Time: This time allows a delay to occur before resuming normal

operation.

NOTE: Purging can be automatically initiated by setting up a purge cycle time in the

calibration limits.

Purge Mo

de Screen