Low flow operation verification procedure, Usa and canada only – Precision Medical HeliO2 Blenders User Manual
Page 17
Heliox / Oxygen Blender Service Manual
Page 15
LOW Flow Operation Verification Procedure
USA and CANADA ONLY
(50 psi / 3.45 bar MODELS)
S E Q #
DIAL
SET
O2%
OXYGEN PRESS
±1.0
HELIOX PRESS
±1.0
FLOWMETER
SET TO
lpm ±0.2
AUXILIARY
BLEED
FUNCTION
TARGET VALUE
ACTUAL
VALUE
psi
bar
psi
bar
1
ANY
50
3.45
50
3.45
closed
closed
leak
<2 psi / 2 MIN
*2
60
75
5.17
0
0
0
closed
back flow
<100 ml/min
*3
60
0
0
75
5.17
0
closed
back flow
<100 ml/min
4
21
50
3.45
50
3.45
3
open
end point
(±0.3) Source Value
5
40
50
3.45
50
3.45
3
open
set point
37.0%-43.0%
6
60
50
3.45
50
3.45
3
open
set point
57.0%-63.0%
7
80
50
3.45
50
3.45
3
open
set point
77.0%-83.0%
8
100
50
3.45
50
3.45
3
open
end point
(±0.3) Source Value
9
60
50
3.45
50
3.45
1
open
set point
57.0%-63.0%
10
60
60
4.14
67
4.62
1
open
set point
57.0%-63.0%
11
60
60
4.14
50
3.45
1
open
set point
57.0%-63.0%
12
60
50
3.45
Slowly
reduce to
30
Slowly
reduce to
2.07
3
closed
Alarm ON
30.0
± 2.0 psi
13
60
50
3.45
Slowly Increase until
alarm shuts off
3
closed
Alarm OFF
45.0 psi MAX
14
60
Slowly
Reduce to
30
Slowly
Reduce to
2.07
50
3.45
3
closed
Alarm ON
30.0
± 2.0 psi
15
60
Slowly Increase until
alarm shuts off
50
3.45
3
closed
Alarm OFF
45.0 psi MAX
16
60
50
3.45
50
3.45
MAX
closed
flow rate
30.0 lpm MIN
17
60
50
3.45
0
MAX
closed
flow rate
30.0 lpm MIN
18
60
0
50
3.45
MAX
closed
flow rate
30.0 lpm MIN
19
60
50
3.45
50
3.45
MAX
open
flow rate
30.0 lpm MIN
* Reference, Letter D. (Reverse Gas Flow Procedure)