SLE SLE2000 HFO, Service Manual, Page: 65 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0
Page 65 of 84
6.2.3 V
ENTILATOR
CPU B
OARD
(A0702/02)
6.2.3.1 U18/26(ADC)
Monitor U18/26 (ADC)
With PTR1 ports open to atmosphere adjust RV2 to give: ............................ 3.11V
Set up a pressure of: .............................................................................. 60cmH
2
O
Adjust RV5 so that U18/26 is: ..................................................................... 4.91V
Set up a pressure of: ............................................................................. -60cmH
2
O
Check that U18 /26 is: ................................................................................. 1.28V
6.2.3.2 Buffered transducer output.
Monitor PLB/23b:
With PTR1 ports open to atmosphere adjust RV3 to give: ............................ 3.42V
Set up a pressure of:............................................................................... 60cmH
2
O
Adjust RV4 to give: ..................................................................................... 6.42V
Set up a pressure of:.............................................................................. -60cmH
2
O
Check that the buffered transducer output (PLB/23b) is:................... 0.42V±0.01V
6.2.3.3 Fresh Gas Block and Leak Alarm
Connect DVM between pins 2 and 4 of PTR2
With PTR2 ports open to atmosphere adjust RV500 to give: .............. 0.00V±1mV
Connect the fresh gas pressure tube to +ve port of PTR2
Switch ventilator on to CPAP mode and confirm that fresh gas flow is :5L/min ±
0.25L/min
With a suitable flow control valve create a pressure at the fresh gas outlet of:
........................................................................................ 17.5cmH2O±0.5cmH2O
Adjust RV501 so that the leak alarm and LED just trip on.
By adjustment of the flow control valve create a pressure at the fresh gas outlet of:
.......................................................................................... 80cmH
2
O ± 0.5cmH
2
O
Adjust RV502 so that the high pressure alarm and LED just trip on.
6.2.3.4 Maximum Inspiration Time
Select CPAP mode
With max. insp. time control turned fully clockwise adjust RV6 to display :3.00 secs.