Penlon AV-S, Service Manual, Page: 89 / 94

APPENDIX
APPENDIX 4
Cleaning
Outside surfaces and bellows housing
CAUTION
Care must be taken not to allow liquids to run into the control
unit; serious damage
may result.
Check that the unit is disconnected from the electrical supply
before cleaning.
Do not use cleaning solutions containing alcohol; the bellows
housing may be damaged.
To clean the outside surface of the ventilator, use a damp
cloth.
If necessary use a warm, mild detergent
solution to remove resistant grime. Make sure that all
detergent residues are fully removed after cleaning.
Never use any harsh abrasive cleaning agent. The
transparent acrylic bellows housing and, in general, the
surfaces of the control unit are not scratch resistant.
The inside of the bellows housing, under normal
conditions, is not in contact with the breathing gas and
therefore only needs cleaning as described above.
Remove the bellows housing (A) by slightly twisting it
counter-clockwise until the tabs at the bottom clear the
bayonet locks, then lift it straight up from the base.
Touchscreen
Use a soft cloth only.
Never use any harsh abrasive cleaning agent.
Bellows and exhalation diaphragm valve
Each time the bellows assemblies are opened for
cleaning, all visible components must be carefully
inspected and damaged parts must be replaced.
Bellows
As with all elastomers, the bellows material deteriorates
with aging and should be inspected at least every six
months or after 1200 hours of use, whichever comes first.
The bellows must be replaced if it shows signs of aging.
The bellows (B) can be removed by carefully pulling it off
the base.
If a paediatric bellows is fitted, the bellows adaptor (C)
must also be removed.
Do not dismantle the bellows.
F
C
B
A
Paediatric
Bellows
Assembly
85