Dräger caleo - Page 144

Troubleshooting
144
Operating Instructions Caleo, Software 2.n
Troubleshooting – Error Messages
Humidity sensor inoperable
3 flashing dashes on the screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm is sounded
(5 beeps).
Faulty humidity sensor. Switch off humidity module.
Take unit out of service.
1 min
Key pad locked
Message displayed and yellow bar LED
lights up for 2 seconds on pressing a key.
Key functions (setpoint input/
weighing/ menu key) disabled.
Activate keypad functions
(page 110).
–
Oxygen concentration below 18 % O
2 concentration less than 18 vol.%. Check that the correct gas is
connected.
Take unit out of service.
1 min
Oxygen deviation above 5 %
(may be set to 3 or 5 % –
see "Configuration", page 108)
Measured value starts flashing on screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm (5 beeps).
Deviation of measured O
2 concen-
tration from setpoint greater than
3 or 5 %, respectively.
Values above 65 % O
2 have been
set.
Close the canopy, front door,
removable bed, x-ray drawer,
access ports, or filter cover.
Check O
2 connection.
Check O
2 supply via central
medical gas pipeline or O
2 cylinder.
Check configuration (page 104).
Reduce O
2 setting to 65 %.
Take unit out of service.
2 min
Oxygen module inoperable
3 flashing dashes on the screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm (5 beeps).
Faulty O
2 module controller. Switch off oxygen module.
Take unit out of service.
1 min
Oxygen sensor deviation above 3 %
Measured value starts flashing on screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm (5 beeps).
Sensor 1 or sensor 2 faulty. Switch off oxygen module.
Take unit out of service.
1 min
Oxygen sensor 1 inoperable
3 flashing dashes on the screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm (5 beeps).
Faulty sensor for oxygen
measurement.
Sensor 1 faulty.
Switch off oxygen module.
Take unit out of service.
1 min
Oxygen sensor 2 inoperable
3 flashing dashes on the screen.
Red bar LED on the control unit starts
blinking.
Central alarm indicator lights up.*
Intermittent audible alarm (5 beeps).
Faulty sensor for oxygen
measurement.
Sensor 2 faulty.
Switch off oxygen module.
Take unit out of service.
1 min
* The central alarm indicator light may be switched off. See "Configuring system settings", page 106.
Message Cause Remedy
Audible
alarm
silence