Prma 460 4 User Manual
Warnings and Cautions
8 If the drve gas supply pressure drops below a nomnal
241 kPa (35 ps), the LOW DRIVE AS SUPPLY alarm wll
actvate both audbly and vsually Patent mnute volume
may be reduced due to lowered flow rates
9 An audble alarm ndcates an anomalous condton and
should never go unheeded
Ventlator
eneral
1 The drvng gas supply must be clean and dry to prevent
ventlator malfuncton
2 Ths ventlator s desgned to be drven by oxygen
only The drve gas s set durng manufacture and the
ventlator s calbrated for that gas
The use of any other gas wll cause naccurate operaton
and may damage the ventlator, resultng n potental
nury to the patent
Ventlator Pre-Use hecks
1 Before the ventlator s used clncally for the frst tme a
albraton heck and Output heck must be successfully
completed
albraton and output checks must be carred out by a
Penlon-traned engneer, followng the procedure n the
Servce Manual
2 Before usng the ventlator check that all hose
connectons are correct Verfy that there are no leaks
Patent crcut dsconnects are a hazard to the patent
Extreme care should be taken to prevent such
occurrences
3 The operaton of each alarm functon should be verfed
daly heck the alarms at clncally sutable ntervals
If the audble alarm or the vsual ndcator of any alarm
functon fals to actvate durng any alarm condton or
fals to reset after the alarm has been cleared, refer the
unt to an authorsed servce engneer
4 Make sure that hoses and cables are not obstructed
Always use a cable suppled by the manufacturer
Usng the Ventlator
5 Use wth Neonates
a) Use ONLY Pressure ontrol Ventlaton (Pressure Mode)
for mandatory ventlaton of Neonates
b) Always set a low target pressure frst and then ncrease
to the requred level
c) Use breathng crcuts and flters specfcally desgned
for Paedatrc/Neonatal use
d) Note that expred volumes shown on the Ventlator
dsplay may read hgher than actually delvered Use
volume readngs as a gude only
e) Do not ventlate pre-term babes wth brth weghts
below 24 kg
6 Before each clncal procedure, carry out pre-use
functon checks on the ventlator
7 The characterstcs of the breathng crcut connected
between the anaesthetc machne and the patent can
modfy or change patent ventlaton
To assst n the mantenance of the delvered patent tdal
volume, the ventlator control system software ncludes
a) a complance compensaton algorthm,
b) a fresh gas compensaton algorthm
However, patent ventlaton must be montored
ndependently from the ventlator
It s the responsblty of the user to montor patent
ventlaton
8 If a ventlator error s detected, ‘Ventlator Inoperatve’
wll be dsplayed
The Vent Inop (ventlator noperatve) alarm ndcates that
one of the followng condtons has occurred
a) The drve gas solenod has faled
b) The flow control valve has faled
c) Internal electronc fault
d) Internal electrcal fault
e) Software error
9 The Hgh and Low arway pressure alarms are mportant
for patent care It s mportant that the sensor s properly
located n the expratory lmb of the crcut
10 The patent must be contnuously attended and
montored, even when advanced breathng modes are n
use
Absorber
1 The bellows can only support approxmately 1 kPa
(10cmHO) dfferental postve pressure, above whch
t may be dslodged from the mountng rng, resultng n
dangerous malfuncton of the ventlator
Do not connect a postve end expratory pressure (PEEP)
valve or other restrctve devce to the exhaust port on the
bellows base Ths would ncrease the pressure nsde
the bellows and the bellows could detach from the base,
causng serous malfuncton
2 The sprometer sensors are mounted wthn the
absorber Do not ft a sprometer sensor to any other
locaton
The devce wll not measure exhaled volumes n any
other poston
3 The absorber must only be used when securely mounted
n an uprght poston
a) The nspratory and expratory non-return valves
(NRV) are gravty operated
b) Spllage of absorbent may contamnate the breathng
system
4 The APL valve s out of crcut when the system s n
‘Ventlator’ mode
Before usng the absorber
5 Do not use a patent Y-pece contanng non-return
valves Usage wth the Absorber s hazardous, because
two sets of non-return valves may easly be connected n
opposton, by error