2/26/2018
DOCA3667B Pro Series Operating Manual.doc
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TROUBLESHOOTING
Leaks in the circle (breathing) system are very common. Particularly, the reuse of "single use"
circle systems frequently results in leaks. This reuse practice is not recommended. Circle system
leaks are not as apparent when bagging a patient or when using an older style ventilator with a
falling-during-exhalation bellows system. The
Model 2002
PRO
/2002IE
PRO
Ventilator with its
state-of-the-art standing (ascending)-during-exhalation bellows system will, more readily reveal
system leaks.
The determination as to whether a leak is in the circle system and/or anesthesia machine or in the
ventilator is easily accomplished. The following procedure should be conducted:
1. Close the anesthesia machine's pop-off valve.
2. Turn off the flow of fresh gas.
3. Disconnect the 22-mm tube from the bellows base assemblies' BREATHING SYSTEM
port and connect it to the patient wye piece to produce a closed loop.
4. While observing the breathing system pressure, slowly increase the fresh gas flow to the
system until the pressure builds to about 50 cm H2O.
5. Turn the flow off.
6. The pressure should hold steady without falling appreciably.
If the system passes this test, refer to the following table to locate the problem with the ventilator.
A Note on Fuse Replacement
Units with SN 2757 and higher have a dual fused Power Inlet Module. The fuse compartment is
accessed by removing the power cord and sliding the fuse drawer open. Replace fuses ONLY
with fuses of the same size and rating as listed on the rear panel below the Power Inlet.
The voltage selector switch with the screwdriver slot IS NOT the fuse holder.
Units prior to SN 2757 are shipped with a Power Inlet Module with one spare fuse. The fuse
compartment is accessed by removing the power cord from the controller and, using a small
screwdriver, pry out the rectangular fuse carrier. Once the fuse carrier is removed, you can see
the fuse. The spare fuse is located inside the rectangular part of the carrier. Slide the drawer out
from one end to gain access to the spare fuse.
