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CardioQuip Modular Cooler-Heater Operator/Service Manual
2. Touch the "silence alarm" button. The audible alarm should silence for approximately 60
seconds, and the OVERTEMP screen should remain.
3. Touch and hold the cold water control button. The system should change to Low pump speed
and water should flow into the cold water tank. Add cold water to the tank, and the alarm
should clear. With hot water in the cold water tank, the alarm will not clear until the water
temp in the tank falls below 42°C.
Terminating Operation
The "Standby" button can be used to access the STANDBY screen, which stops the pump and
halts temperature control operations of the MCH. The mains power switch may be turned off at
any time to completely terminate MCH operation. The set temperature and other operator-
selectable settings are retained in the device's memory.
Turning off the mains power switch isolates both poles (line and neutral) simultaneously from
the supply mains. This may also be accomplished by unplugging the MCH power cord from the
wall outlet.
Leakage Current Test
Using a calibrated electrical safety analyzer, measure electrical leakage current of the MCH unit
under the following conditions: power on and off, polarity normal and reverse, unit grounded and
ungrounded. The leakage current should be less than 100µA under all conditions. If a unit has
leakage current that exceeds 100µA or has a significant increase in leakage current, the cause
should be investigated. Refer to Underwriter's Laboratory or IEC Standards to obtain the current
and correct procedures for leakage current measurement.
Initial Cleaning
To prepare the MCH for storage or initial use, perform the Quarterly cleaning procedure, which
may be found in the Maintenance section of this manual.
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