System Test - CardioQuip MCH-1000 Operators & Service Manual

System Test

On startup, the MCH enters TESTING mode and runs a system test to verify proper operation
of all internal components. Onscreen indicator lamps display the status of control and
feedback signals for the various internal systems, and the "Test Status" column (far right)
displays the test results. If any test fails, its "Test Status" will display a red "X" symbol and the
FAILURE screen will appear. Touching the
will not enter operational mode if any internal system test fails.
System mode indicator
Audible alarm indicator
Temperature differential indicator
Operational indicators
Control buttons
Once the system test has successfully completed, the operator must press the
button to enter Standby mode.
CAUTION: At the end of a system test, the audible alarm will sound once. The
operator must verify that the alarm is audible within the operating
environment.
Temperature Differential
Indicator Symbol
16 CONTROL SCREENS | System Test
Retry
This symbol is the Temperature Differential indicator. When
displayed onscreen, it indicates that the measured temperature
differential between the MCH's two internal temperature
controllers is greater than 2.5˚C. This is usually caused by
blocked or impeded water flow. Check the water path to be sure
connectors are fully seated, hoses are not kinked, valves are fully
open, and the internal recirculation valve (if so equipped) is fully
in either the NORMAL or INTERNAL position. If the MCH runs in
this condition for more than ten seconds, it will automatically
cease operation and display a FAILURE screen.
button will retry the system test. The MCH
Retry button
Test status indicators
Indicator lamps
Standby