LTV 1150 - Accumulator

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 8-53
Accumulator
Parts required for replacement: Tools required:
• Accumulator P/N 18144-001
Replace if damaged:
• 7/16” Pan Head screws (2) P/N 10433
• Phillips screwdriver with torque meter
• Grounded anti-static wrist strap
To remove the accumulator:
1) Remove the ventilator back panel and disconnect the internal battery cable from the
power board (see instructions on page 8-28).
2) Disconnect the 4-wire flow valve connector from the motor board.
3) Disconnect the Pisco connector from the oxygen pressure transducer on the analog
board (LTV
®
1200 only).
4) Disconnect the 3-wire flow valve connector from the power board.
5) Disconnect the flexible tube from the airway pressure transducer on the analog board.
6) Remove the two (2) screws that secure the accumulator to the turbine manifold spacer,
and remove the accumulator from the spacer.
7) Disconnect the flexible tubes from the bottom of the accumulatoras shown.
To replace the accumulator:
1) Reconnect the flexible tubes to the accumulator.
2) Tuck the flexible tube from Port B of the accumulator down between the purge
solenoids and the turbine manifold spacer. Attach the accumulator to the spacer using
two (2) 7/16” pan head screws (P/N 10433) and verify the tubing from ports A and B are
not kinked and do not overlap. Torque the mounting screws to 60 in-oz (0.42 Nm).
3) Reconnect the flexible tube to the airway pressure transducer on the analog board.
4) Reconnect the 3-wire flow valve connector to the power board. The connector is keyed
to fit only one way and will snap into place when properly aligned.
5) Reconnect the Pisco connector to the oxygen pressure transducer on the analog board
(LTV
®
1200 only).
6) Reconnect the 4-wire flow valve connector to the motor board. The connector is keyed
to fit only one way and will snap into place when properly aligned.
7) Install an O
2
Sampling Tube
42
. See Back Panel, Reinstallation in Chapter 8 –
Component Removal and Replacement for detailed instructions.
8) Reconnect the battery and replace the back panel (see instructions page 8-29).
42
O
2
Sampling Tube, P/N 10544, ~10.0” long, 0.125” O.D. X 0.079 I.D. clear polycarbonate tubing.