(2) Wipe all parts clean with a dry, lint-free cloth including the portion of the
control head body from which you removed the pressure relief valve.
Reassemble the pressure relief valve in reverse order of disassembly.
ISOLATE A BREATHING CIRCUIT PRESSURE GAUGE MALFUNCTION
If the breathing circuit pressure gauge malfunctions, troubleshoot it by using the
following procedures. Refer to figure 3-1.
a. Place the apparatus in an upright position.
b. Adjust the gauge to zero 1 mm Hg.
c. If the gauge will not adjust to zero 1 mm Hg, the gauge is defective .
d. Remove and replace or repair a defective breathing circuit pressure gauge
before returning the anesthesia device to service.
ISOLATE A LEAK DURING LEAK TEST PROCEDURE NUMBER 1
When you are performing leak test procedure number 1, the pressure may drop
faster than normal. You must troubleshoot the malfunction. For large cylinders,
abnormal pressure drops are more than 100 psig per 7-minute period. For small
cylinders, abnormal pressure drops are more than 100 psig per 5-minute period. Refer
to figure 3-4 for small cylinder use. Refer to figure 3-5 for large cylinder or
a. Perform leak test procedure number 1.
If you are using an adapter, tighten the cylinder adapter securely on the
Ensure the cylinder gasket is in place on the cylinder valve or cylinder
Replace any gasket that appears to be nicked or worn.
b. Repeat leak test number 1.
(1) Proceed to leak test number 2 if the apparatus can meet the stated
(2) Perform the following steps if the apparatus cannot meet stated