5-20
5.3.2 Gas Supplies and Drive Gas
The following table lists gas supplies and drive gas related failures.
Failure description
Possible cause
Recommended action
The gas supply tube is
damaged or the seal at
the connection is
damaged.
Replace the gas supply tube or the seal at the
connection.
The quick plug-in
connector leaks.
Replace the quick plug-in connector or PU
tube (when the PU tube is not damaged, if the
tube is long enough, cut off a small segment
of the tube where the quick plug-in connector
is met, and then insert the tube into position).
The pipeline gas supply
inlet assembly leaks.
Check if the one-way valve of the quick
plug-in connector of the pipeline gas supplies
inlet assembly leaks in the reverse direction.
Replace it if necessary. Check and replace the
damaged seal of the pipeline gas supplies
inlet assembly. If the problem persists,
replace the pipeline gas supplies inlet
assembly.
Leak
The drive gas pipeline
leaks.
Check and repair the expiratory valve
assembly as per the procedures described in
5.3.4.2Leak Test of Low-pressure Pneumatic
Circuit System
.
Pipeline pressure
gauge shows
inaccurate readings
or no readings.
The pipeline pressure
gauge is damaged.
Replace the pipeline pressure gauge.
The readings on the
pipeline pressure
gauge fluctuate
greatly.
The filter of pipeline gas
supply inlet assembly or
the PU tube of the
pipeline pressure gauge
is occluded or the
pressure gauge is
damaged.
1. After confirming that the pipeline gas
pressure is stable, check the PU tube of the
pipeline pressure gauge and filter of the
pipeline gas supply inlet assembly. If the tube
or the filer is occluded, replace it (replaced at
least once per year).
2. If the problem persists, replace the pipeline
pressure gauge.
Summary of Contents for WATO EX-55
Page 1: ...WATO EX 55 65 Anesthesia Machine Service Manual ...
Page 2: ......
Page 4: ...II FOR YOUR NOTES ...
Page 6: ...IV FOR YOUR NOTES ...
Page 12: ...6 FOR YOUR NOTES ...
Page 58: ...3 22 FOR YOUR NOTES ...
Page 242: ...6 54 6 4 1 Electrical Connections Electrical Circuit Diagram ...
Page 260: ...6 72 FOR YOUR NOTES ...
Page 261: ...7 1 7 Parts 7 1 Main Unit 7 1 1 Main Unit 7 1 1 1 Exploded View ...
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