Maquet HCU 40, Instructions For Use Manual

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| 74 | 4 Operation | HCU 40 |
Instructions for Use | 1.0 | EN | 01
Copyright Maquet Cardiopulmonary GmbH
3 Close the stopcocks for the circuits used (⇨ "Opening/Closing Stopcocks",
page 40).
4 Disconnect the tubes from the heat exchangers.
5 Store the tubes on the machine.
6 Do not switch the HCU 40 off.
NOTE
Recommendation for operating the HCU 40
The HCU 40 should always remain connected to the power supply and turned
on to ensure that there is always sufficient ice in the tank. As soon as the set ice
block size is attained, the machine switches automatically to Ice maintenance
mode.
4.7 Emergency Procedures
In emergencies, the following combinations of circuits and heat exchangers are
permissible as a temporary measure if components fail:
Patient water circuit 1 Patient water circuit 2 Cardioplegia water
circuit
Remarks
Defective Defective Oxygenator heat ex­
changer If the patient water cir­
cuits fail
Oxygenator heat ex­
changer Cardioplegia heat ex­
changer Defective If the cardioplegia wa­
ter circuit fails
NOTE
If an oxygenator heat exchanger is operated on the cardioplegia water circuit,
you must expect reduced warming and cooling performance as the flow rate of
the cardioplegia water circuit is lower than that of the patient water circuit.
4.7.1 De-airing in an Emergency During Perfusion
WARNING!
With the "De-airing" function, ice-cold water is pumped from the tank into the
tubes and the heat exchanger. The perfusion circuit in which the heat exchanger
being de-aired is integrated must not be operated, as it could provoke a cardiac
arrest if a patient is connected.