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CardioQuip Modular Cooler-Heater Operator/Service Manual
Priming
From the STANDBY screen, touch the "Prime" button to enter PRIMING mode. While the MCH
is designed to be largely self-priming, running a priming cycle will remove all air bubbles from
the lines, offering quieter operation and better heat transfer. During the priming cycle, the pump
runs at high speed, and the cooling control valve automatically alternates the water flow between
cooling mode and recirculating mode every ten seconds. No operator intervention is required.
The MCH may be returned to STANDBY mode at any time by pressing the "Standby" button.
The standard priming cycle length is 2 minutes, but touching the "Extended Prime"
button—the stopwatch icon to the left of the countdown timer—will increase the
priming cycle length to 10 minutes. This feature is most useful when performing the
Quarterly Maintenance procedure.
System mode indicator
Current Temperature
CPG option controls
Control buttons
During priming, if the pump speed setting is below maximum, the MCH
will automatically override the setting for the duration of the priming
cycle. When this occurs, the PUMP SPEED label will change to an
OVERRIDE label. Once priming is complete, the pump speed will return
to the preset.
Display
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Countdown timer
Extended Prime button
Temperature control
buttons
Pump speed override
indicator
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