Chapter 4: Routine Maintenance
Surgivet
®
Universal CDS 9000 Operation Manual
4-11
Tighten the lower 2 set screws. Do not overtighten as you may strip them.
7.
Install the other 2 set screws.
8.
Turn on oxygen supply and test function of flowmeter by turning it Off and On gradually.
9.
Needle Valve Replacement
Supplies Needed:
9/16” Open-End Wrench
•
Needle Valve (32413B2)
•
NOTE! Flowmeter shown disassembled from the machine for clarity. It is not necessary to disassemble
the Flowmeter from the machine to perform this operation.
Turn oxygen supply to the anesthesia machine OFF and deplete the system using the flush valve on the
1.
anesthesia machine.
Turn flowmeter knob counterclockwise until it stops (this will also remove any oxygen left in the system).
2.
Place a 9/16” open-end wrench on the black aluminum portion of the needle valve assembly directly in front
3.
of the plastic knob. (See Figure 4-20)
Turn wrench counterclockwise to remove the old needle valve assembly. (See Figure 4-21)
4.
Turn the flow knob counterclockwise on the new needle valve assembly until it stops.
5.
Insert the new needle valve assembly into the flowmeter and tighten with a 9/16” wrench.
6.
Do not
overtighten.
Turn flow knob clockwise until it stops. This is the OFF position.
7.
CAUTION! Do not overtighten the flow knob. This can cause damage to the needle valve.
Turn oxygen supply to the anesthesia machine ON and check the flowmeter for proper function.
8.
CAUTION! When the ball is resting on the bottom of the stop in the flow tube, the flowmeter is OFF.
There is no need to tighten any more.
Figure 4-20: Wrench Directly in Front of Plastic Knob
Figure 4-21: Remove Old Needle Valve Assembly
