Replacing The Lines To The Pump - Mallinckrodt Nellcor NPB-70 Service Manual

7.5.1

Replacing the lines to the pump

7.5.1.1 Replacing the Main line (Refer to Figure 7-7)
1. Locate the purple restrictor.
2. Carefully disconnect the main line from the tubing
connected to the pump, leaving the purple restrictor in the main
line.
3. Remove the tubing from the CO
4. Remove the tubing from the pressure sensor.
Note: When replacing the main line, in order to fit the main line on the
board without twists and kinks, coil the tubing around the
pressure sensor (refer to Figure 7-8).
5. Reassemble the new Main line in reverse order.
7.5.1.2 Replacing the Exhaust line (Refer to Figure 7-8)
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 in the exhaust line.
3. Reassemble the new Exhaust line in reverse order.
Figure 7-8: Exhaust line
Section 7: Disassembly Guide
sensor.
2
Figure 7-7: Main line
7-7