ICU Medical LifeCare PCA, Technical & Service Manual, Page: 29 / 148

4.7 OCCLUSION ALARM SWITCH TEST AND ADJUSTMENT
Technical Service Manual 4 - 5 LifeCare PCA
Figure 4-1. Occlusion Alarm Test Setup
4.7.2
OCCLUSION ALARM SWITCH AND PRESSURE
ADJUSTMENT
To adjust the occlusion alarm switch and pressure, see Figure 4-2 , and proceed as follows:
1. Disconnect the infuser from AC power.
2. Separate the front and rear enclosures as described in
Section 7.2.2
.
3. Remove the CE PWA as described in
Section 7.3.8.9
.
4. Examine the position of the occlusion alarm switch. If the leaf spring is holding
the occlusion switch closed, proceed to Step 6.
5. If the leaf spring is not holding the occlusion switch closed, check for the following
three possibilities:
- The leaf spring may be damaged or bent. Replace it if necessary.
- The 2-24 screw holding the leaf spring to the mechanism top support may be
loose. If the screw is loose, tighten it using the Phillips screwdriver.
Adjust the screw until the leaf spring is holding the occlusion switch closed.
- The flat washer located under the leaf spring may be missing. Remove the leaf
spring and verify the flat washer is in place.
6. If, after investigating the possibilities in Step 5, the leaf spring cannot be kept
in contact with the occlusion alarm switch, contact ICU Medical .
OFF
mmHg
cm OF H O
2
-13.5 TO 15
- 13.5 TO 75
PSI
INCHES OF H O
2
UNIVERSAL
0.00
WATER FILLED VIAL
STOPCOCK
DPM
DRAIN
PRESSURE METER PRESSURE INPUT
HISTORY
SILENCE
VOLUME
ON
OFF
START
PAUSE