MSA MultiGard 5000, Manual

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3103-1001 Rev. 0
4.1.1 Overview
The Overview screen seen in Figures 1 and 2 provide a single place to see anything that is happening
within MultiGard 5000 unit. In a summary format, gas alarming and internal system conditions are
depicted. Visual annunciators will indicate the subject area where a condition exists and act as "off-
page" indicators to lead the operator to other screens for the details.
NOTE: It is intended that this screen be visible most of the time during normal system operation.
Any time the local horn sounds the operator should return to and look at the Overview
screen to determine what happened. The operator should then proceed to get the details
by selecting other appropriate screens as flagged on the Overview.
The Overview screen consists of the following status indicators, annunciators and push buttons:
"User Settings Stored" – Is displayed and green during normal operating conditions. When the
system memory has been corrupted, or the system requires booting from the SD card, user-entered
parameters are lost and the MSA factory defaults are reinstated, and this indicator becomes red and
displays “Factory Defaults Loaded”; this event is classified a trouble condition. If the user entered
data has been saved (discussed later in this manual), the user data can be restored, which will cause
the indicator to go back to its normal operating condition. The only normal cause for this is battery
failure followed by power being turned off long enough for internal capacitors to discharge. This
event should be rare assuming the MultiGard 5000 unit is powered up most of the time while in
service.
WARNING
If “User Settings Stored” indicator appears red on the Overview
screen, all user entered parameters are lost and the MSA factory
defaults are reinstated. Immediate action is required to manually
re-enter or load all previous user configured parameters to restore
MultiGard 5000 unit to its most recent desired operation. If no
action is taken the MultiGard 5000 unit will remain in default
operation with only common alarming and user configured
parameters as defined in Section 1. This results in operation
identical to the initial delivery of MultiGard 5000 unit.
"Sampling Mode Active" - This indicator shows that the MultiGard 5000 unit is in sampling mode.
When manual calibration is active, the indicator will turn yellow and display “Manual Calibration
Active”. During auto standardization the indicator will turn yellow and display "Auto
Standardization in Progress" until the procedure is completed.
"Sequencer Pattern Current" - Indicates the sequencer pattern currently running is the same as that
defined by the Point Bypass and Point Order setup screens. If the operator changed anything on the
Point Bypass or Point Order screens, and did not update the pattern, this indicator will change to
yellow and display "Update Sequencer Pattern”. See Sections 4.2.7 and 4.2.8 for details on point
bypass and point order, respectively.