18
Technical high priority alarms
GAS SUPPLY
Alarm specification
10 sequences of sound pulses spaced 2,5 seconds and dedicated led flashing two times per second
Reason of activation
The pressure of the pneumatic supply is low
Possible causes of activation
1 – The gas supply doesn’t have adequate performances for this device
2 – Oxygen tanks are empty
Action to take
1 – Put the device out of service and verify the performances of the gas supply.
2 – Verify the remaining pressure of the oxygen tanks considering the pressure of the residual valve.
Here is shown a table for general guidelines about autonomy of bottles of various capacities.
Autonomy expressed in minutes for a tank loaded at 200bar
Tank capacity
(liters)
Selected flow (l/min)
2
4
6
8
10
12
14
16
18
20
2
200
100
67
50
40
33
29
25
22
20
3
300
150
100
75
60
50
43
38
33
30
5
500
250
167
125
100
83
71
63
56
50
7
700
350
233
175
140
117
100
88
78
70
10
1000
500
333
250
200
167
143
125
111
100
14
1400
700
467
350
280
233
200
175
156
140
Technical high priority alarms
LOW BATT
Alarm specification
10 sequences of sound pulses spaced 2,5 seconds and dedicated red led flashing two times per
second
Reason of activation
The primary battery has reached a low charge level requiring intervention by the operator
Possible causes of activation
1 – The battery has a remaining autonomy of about 10 minutes
Action to take
1 – Connect the device to the external power source as soon as possible
Technical medium priority alarms
LOW BATT
Alarm specification
3 sequences of sound pulses spaced 2,5 seconds and dedicated yellow led flashing one time every
two seconds
Reason of activation
The primary battery has reached a charge level that requires attention by the operator
Possible causes of activation
1 – The battery has a remaining autonomy of about 30 minutes
Action to take
1 – Connect the device to the external power source as soon as possible
Other signals
Primary battery failure during charge
Signal specification
The write ON CHARGE is flashing
Possible causes of activation
The battery temperature is too high
Action to take
Wait for battery cooling
The device will start to charge the battery when the temperature reaches adequate levels
Other signals
Primary battery failure
Signal specification
LOW BATT flashes every 3 seconds emitting a short acoustic signal
Possible causes of activation
1 – The fuse is blown or the battery protection is interrupted
2 – battery not connected
Action to take
1 – Remove immediately the battery and use the external power source.
2 – Connect the battery
Other signals
AUDIO PAUSED
Signal specification
White led is on, next to the write AUDIO PAUSED
Meaning
Active alarms are silenced
Other signals
Signal specification
Other leds are on
Meaning
Failure of an internal component