Penlon AV-S, Service Manual, Page: 63 / 94

5 Engineer Error Codes (every six months)
5.1 Select 'Service Menu' - 'Engineer Menu' - 'Diagnosis Menu'- 'Display Error Log'
5.2 Check and investigate errors. Up to 30 Error Codes can be stored. Format is:
Date - Time - Fault
Example: 08/05/01 - 09:12:40 - On/Off Valve
5.3 Reset Error log.
6 Bellows Assembly (every six months)
6.1 Remove and clean canister.
6.2 Remove bellows from base and inspect bellows.
6.3 Discard old bellows and replace with new. (every 12 months)
6.4 Remove diaphragm valve (3 x thumbscrew)
6.5 Inspect valve seat for damage
6.6 Check valve disc hangs level.
6.7 Replace diaphragm valve
If necessary clean valve seat and valve disc using alcohol wipe.
Do not attempt to dismantle diaphragm assembly.
6.8 Replace large orange o-ring from bellows canister (not absorbent canister)
(every 12 months)
Replace small o-ring from diaphragm valve. (every 12 months)
Apply oxygen approved grease
6.9 Refit diaphragm valve and secure. (3 x thumb screws)
6.10 Refit bellows and canister.
6.11 With hand occlude the Inspiratory connector of the absorber and inflate bellows
assembly using flush button until bellows is at top of housing.
With no flow from anaesthesia machine bellows should not drop.
6.12 Move hand from Inspiratory connector and occlude drive gas hose at rear of absorber.
Bellows will fall momentarily but then should stop falling.
Failure of either 6.11 or 6.12 indicates a bellows leak, diaphragm valve leak, drive gas
hose leak or canister leak.
7 Pneumatic System Tests (every six months)
7.1 With unit switched off, disconnect mains supply.
Unscrew thumbscrews at rear of unit and withdraw Patient Valve Block.
7.2 Remove Diaphragm valve, spring and spring cap.
Remove the Non-Return Valve.
Clean and examine for damage or discolouration.
Replace as necessary.
Refit the Non-Return Valve.
With the spring, spring cap, and the diaphragm still removed, occlude the spring orifice.
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SERVICE SCHEDULE