GE Giraffe OmniBed Carestation CS1, Service Manual

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Chapter 7: Repair Procedures
Servo Controlled Oxygen Service Procedures
7-64 Service Manual
3. Use a pair of pliers to turn the valve out of the manifold block.
4. When installing a new valve, finger tighten it into the manifold. Perform the Pre-use Checkout Supply
Valve Leak Test.
7.18.5 End Cap Safety Valve
1. To remove the end cap manifold, slide up the dovetail rail trim strip to access the M4 flathead screw
(2.4
mm hex key) end cap screw, and remove the screw. Loosen the M4 retaining pin screw and tilt the
manifold to disengage the retaining pin from the hole in the dovetail rail and remove the manifold.
2. To replace any of the valve’s internal parts, remove the two M4 flat head screws.
3. Use a needle nose pliers to pull the two-way valve from the bore in the manifold. When replacing the
valve make sure to lubricate its two O-rings with Vac Kote (6700-0092-200).
4. When reinstalling the manifold, tighten the M4 flathead screw first, then tighten M4 retaining pin screw.
Perform the Supply Valve Leak Test and Pre-use Checkout.
7.18.6 Servo Oxygen Board Repairs
1. Use a 2.5 mm hex key to loosen the 2 screws in the keyhole slots and remove the 6 remaining screws
that secure the electrical enclosure cover, then remove the cover.
2. The Servo O2 Board is located in the second slot of the option card cage. The 485 data cable, sensor
housing cable, calibration cable and cooling fan cable are attached to it. The board can be slid part
way out of its guide to access its connectors or to replace the U6 EPROM. Perform Pre-use Checkout.
FIGURE 7-57. End Cap Safety Valve
M4 flat head screw
Spring cover
Valve retaining tube
Valve spring assembly
Elbow fittings
Retaining pin
Two-way valve
M4 retaining pin screw
M4 flathead screw
End cap manifold