Maquet HCU 40, Instructions For Use Manual

Page: 42 / 148

| 42 | 4 Operation | HCU 40 |
Instructions for Use | 1.0 | EN | 01
Copyright Maquet Cardiopulmonary GmbH
Reducing water hardness
To reduce hard water to 2.5 mmol/l CaCO
3
(14 °dH), you must add distilled water
to the tap water in the applicable mixing ratio:
Hardness of tap water Mixing ratio tap water : distilled water
3 mmol/l CaCO
3
17 °dH 5 : 1
4 mmol/l CaCO
3
22 °dH 1.7 : 1
5 mmol/l CaCO
3
28 °dH 1 : 1
6 mmol/l CaCO
3
34 °dH 1 : 1.4
7 mmol/l CaCO
3
39 °dH 1 : 1.8
8 mmol/l CaCO
3
45 °dH 1 : 2.2
9 mmol/l CaCO
3
50 °dH 1 : 2.6
10 mmol/l CaCO
3
56 °dH 1 : 3
4.1.8 Connecting/Removing Water Tubes
Connecting the water tubes
1 Close the stopcocks.
2 Connect the tube to the corresponding water inlet or water outlet. Ensure that
you feel the quick-release coupling click into place.
NOTE
Before opening the stopcocks, you must create a circuit by:
n
Connecting the oxygenator heat exchanger to the water circuit P1(⇨ "
Connecting a Heat Exchanger", page 52).
n
Connecting the warming/cooling blanket to the water circuit P2 (⇨ "
Connecting a Heat Exchanger", page 52).
n
Establishing the water circuit with the cleaning connector (double Hansen
coupling) (⇨ "Creating a Water Circuit", page 52).
Removing the water tubes
1 Empty the tube system (⇨ "Emptying Water Circuits", page 58).