Low Ice (Low Priority); Overtemp (Medium Priority) - CardioQuip MCH-1000 Operators & Service Manual

CardioQuip Modular Cooler-Heater Operator/Service Manual

Low Ice (low priority)

If the MCH is unable to cool to the set temperature within 40 seconds due to
insufficient cold water in the tank, the Low Ice alarm sounds a short double-
beep alarm every 20 seconds. This alarm is accompanied on the "Run" screen
by the indicator icon shown at left. Touching this icon will silence the alarm
!
for 60 seconds. The Low Ice audible alarm may be disabled on the SETTINGS
screen.

Overtemp (medium priority)

Under normal operation, the MCH software will not allow the water temperature at the outlet to
exceed 42.5℃. If the outlet water temperature rises above 42.5℃, the MCH halts its operation,
the OVERTEMP screen appears, and the alarm sounds a repeating three-beep sequence every 8
seconds.
System mode indicator
Temperature differential
indicator
Current temp display
CPG Module controls
Audio Silence button
60 seconds by touching the Audio Silence button at the bottom left corner of the screen. Touch
the cold water control button (the blue snowflake at the bottom right of the screen) to pump cold
water into the lines to reduce the temperature. Once the temperature reaches a safe level, the
alarm will clear and the MCH will enter STANDBY mode.
This symbol is the Temperature Differential indicator. When it appears 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.
The audible alarm may be silenced for
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Blinking overtemp
indicator (0.5Hz)
Temperature control
buttons
Pump speed control
Cold water control
button