Heyer Modular+ - Removing the Patient Module; Removing the Bellows and Dome System; Removing the CO Absorber Canister; Removing the Airway Pressure Limiting Valve (APL)

Maintenance and Calibration
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3.6.3 Removing the Patient Module
1. Remove the CO
2
absorber dome.
2. Remove the bag in bottle system.
3. Remove the O
2
cell cable from the O
2
cell.
4. Remove the scavenger hose.
5. Remove the breathing circuit.
6. Turn the locking handle 180° counterclockwise
7. Pull out the patient module.
3.6.4 Removing the CO
2
Absorber Canister
1. To release the absorber canister from the patient module, turn the unit counter clockwise. Secure
the Canister that it does not fall to the ground when the thread has ended.
Note: The discoloration of the spent soda lime disappears again after some time if it has not
been used. If used again, the color discoloration returns. Dry soda lime becomes
malsorbant.
3.6.5 Removing the Bellows and Dome System
1. Turn the unit counter clockwise and unscrew the unit ¼ turn.
2. Once released, remove the silicon bellows by pulling it down form the Patient Module fitting.
3.6.6 Removing the Airway Pressure Limiting Valve (APL)
1. Unscrew the union nut. The top section can now be removed.
2. The membrane can be removed from the bottom section and replaced, if necessary.
3. The membrane is placed back into the bottom section with the metal facing upwards.
4. Replace the top part of the Airway Pressure Limiting valve by lining up the index line in its correct
orientation.
5. Secure with union nut.
Caution: The spring in the top of the APL valve may not be stressed. After removal from
the bottom section place the top section to one side, taking care that the spring
is not unduly loaded.