Prima 320 Advance
62
User Manual
6.9
Replace Absorbent
CAUTION
A gradual colour change of the soda lime in the canister
indicates approximately the level of absorption of carbon
dioxide. Use carbon dioxide monitoring to determine when to
change the soda lime.
Follow local regulations regarding disposal of hospital waste
when the soda lime is replaced.
If left standing for several hours, it may regain its original
colour and give a misleading indication of usability.
6.9.1 Using canister bypass mode
Use the canister bypass mode for continued ventilation of the
patient while changing the absorber canister.
NOTE
Bypass mode seals the breathing circuit when the canister is
removed.
While the absorber canister is out of the breathing circuit,
the patient re-breathes exhaled gases. Use carbon dioxide
monitoring .
For safety, an infrared sensor monitors if bypass mode is
activated. A technical alarm is triggered to warn the user.
6.9.2 Absorbent change procedure
WARNING
To prevent dust and particles from entering the breathing
circuit, the filter (1) must be fitted securely, as illustrated.
Before installation, clean all the canister components,
including the seal (2).
1. Rotate the absorber canister clockwise until the triangular
marks (3) are aligned.
2. Detach the canister from the absorber.
Canister bypass mode is activated.
’No absorber!?’ is shown in the alarm message area.
3. Empty the canister
4. Fill with new soda lime to the MAX line (4).
Remove any soda lime that has collected on the filter (1).
5. Wipe the dust from the absorber canister support (5).
6. Position the canister, ensuring that the threads are engaged.
Make sure that the triangular marks (3) are aligned.
7. Tighten counter-clockwise until the ‘locked’ symbol (6) and
the triangular mark (7) on the canister are aligned.
8. Check that the alarm message is cancelled.
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Operating the Anaesthesia System
