Nellcor NPB-75, Service Manual

Page: 41 / 71

Section 7: Disassembly Guide
7-8
7.6.1 Replacing the lines to the pump
7.6.1.1 Replacing the Main line
(Refer to Figure 7-8: Main line and Figure 7-9: Exhaust line)
1. Locate the Purple restrictor.
2. Carefully disconnect the Main line from the tubing
connected to the Pump, leaving the Purple restrictor on the
Main line.
3. Remove the tubing from the Sensor.
4. Remove the tubing from the Pressure sensor.
5. Reassemble the new Main line in reverse order.
Note: In order to fit the Main line on the board without twists and
kinks, coil the tubing around the Pressure sensor.
7.6.1.2 Replacing the Exhaust line
(Refer to Figure 7-9: Exhaust line)
1. Locate the Green restrictor.
2. Carefully disconnect the Exhaust line, at the Green restrictor,
from the tubing connected to the pump. Leave the Green
restrictor on the Exhaust line.
3. Reassemble the new Exhaust line in reverse order.
Figure 7-8: Main line
Figure 7-9: Exhaust line