Fisher & Paykel MR720 Manual De Usuario
52
Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
Excessive water in expiratory
circuit due to rainout.
circuit due to rainout.
Condensation due to cooling in
Expiratory line.
Expiratory line.
Use dual heated circuit.
Water ejected from
humidification chamber into
circuit.
humidification chamber into
circuit.
Humidification chamber filled beyond
maximum water level line.
maximum water level line.
Rduce water level
Maximum permissible peak flow rate of
humidification chamber has been
exceeded.
humidification chamber has been
exceeded.
Ue correct chamber. Refer to the
operating instructions for the type of
chamber used.
operating instructions for the type of
chamber used.
Humidifier chamber tilted.
Chamber should be level.
C1.5
L
OW HUMIDITY
Condition detected
Possible cause
FAction to take
Low humidity.
Chamber control set to low.
Increase setting.
No water in humidification chamber.
Fill chamber.
Chamber temperature low.
Check heaterplate temperature setting on
diaplay when humidifier is switched on,
Chamber base and heaterplate are smooth
and flat and in good contact. (Chambers
not made by Fisher & Paykel may not be
suitable).
diaplay when humidifier is switched on,
Chamber base and heaterplate are smooth
and flat and in good contact. (Chambers
not made by Fisher & Paykel may not be
suitable).
Gas flow rate too high for chamber.
Check maximum flow rate in to chamber
operating instructions.
operating instructions.
C1.6
A
LARMS
Condition detected
Possible cause
FAction to take
Temperature probe alarm (‘---’
appears on display).
appears on display).
Temperature probe unplugged.
Check connetion.
Temperature probe plug dirty.
Clean plug.
Temperature probe faulty
Replace probe.
Heater wire alarm while
temperature still displayed.
temperature still displayed.
Heater wire unplugged.
Check connection.
Heater wire broken.
Replace heater wire.
Heater wire switch turned off but
heater wire connected.
heater wire connected.
Turn heater wire on.
Heater wire switch turned on but heater
wire not connected.
wire not connected.
Turn heater wire off.
Heater wire alarm while ‘F2’
displayed.
displayed.
Internal fuse blown.
Send for repair.
41 °C Overheat calibration outside
limits.
limits.
Check calibration of the 41 °C
comparator.
comparator.