Maquet HCU 40, Instructions For Use Manual

Page: 27 / 148

| HCU 40 | 3 System Description | 27 |
Instructions for Use | 1.0 | EN | 01
Copyright Maquet Cardiopulmonary GmbH
3.6.4 Parameter Display
WARNING!
If you change the setpoint temperature, check the temperature change at the
water outlet to ensure it is reasonable.
Parameters Meaning
Actual temperature at outlet Temperature measured at the water outlet.
Setpoint temperature
To change the setpoint ice block size, touch the symbol ( ⇨
"Setting and Changing Setpoint Temperatures", page 45
).
Only with connected external temperature sensors:
Temperature of external
sensors Measured temperature of the external temperature sensor.
To display or change the alarm limits, touch the symbol ( ⇨
"Setting the Warning Limits for the External Temperature",
page 48).
Gradient Maximum permissible temperature difference between wa­
ter outlet (T
out
) and the externally measured temperature (T
ext
).
To activate the Gradient mode and change the gradient,
touch the symbol ( ⇨ "Gradient Mode", page 49).
NOTE
Patient water circuit on left, cardioplegia water circuit on right
The setpoint temperature (T
set
) always refers to the temperature at the water
outlet (T
out
).
Even once the required temperature is reached at the water outlet (T
out
), the
externally measured temperature (T
ext
) may deviate because of heat/cold loss
between the water outlet and the external temperature sensor. The loss
depends on different factors such as tube lengths and the ambient temperature.