Philip HeartStart XL M4735A Defibrillator Capacitor SP25MEG1050 B Capacity

philip HeartStart XL M4735A defibrillator Capacitor SP25MEG1050 B Capacity

► Discharge the Defibrillator Capacitor

1. Lift the capacitor out of the way.

Lift up the defibrillator capacitor together with its foam base. Lift straight up, then turn the capacitor to the right and rest it on the Power PCA.

2. Inspect the Disarm Pathway.

Look for signs of arcing, burning, damage to the resistors or inductor, blown traces on the Power PCA, etc.

TIP: The Disarm Pathway is located under the Defibrillator Capacitor on the left side of the Power PCA. The Disarm Pathway consists of two large power resistors (Disarm Resistors), a red inductor, and the PCA traces that connect them.

3. Choose a discharge method.

A. If the Disarm Pathway is intact, and use the Primary Method below to discharge the defibrillator capacitor.

B. If you see any burns or damage, the Disarm Pathway may not be intact. Use the Primary Method, then also use the Secondary Method to discharge the defibrillator capacitor.

Primary Method

• Using the High Voltage Discharge Tool, first touch one end of the tool’s brass bar to the current sensing resistor (the small loop of flat metal).
• Then pivot the brass bar so its other end contacts the exposed end of the disarm resistor.
• Maintain contact at these two points for at least 5 seconds. The defibrillator capacitor is now discharged.

Secondary Method

• Using two clip leads, connect one clip lead to each end of one of the Disarm Resistors.
• Touch the clip leads directly to the spade terminals on the Power PCA where the Defibrillator Capacitor is connected. Maintain this connection for at least 5 seconds.
• TIP: Another way to make this connection is to clip the leads to test probe leads, then use the test probes to touch the spade terminals.
• Repeat steps a and b using the other Disarm Resistor. The defibrillator capacitor is now discharged, even if one of the resistors is damaged.

► Removal

1. Lift the capacitor out of the way.

Lift up the defibrillator capacitor and its foam base. Lift straight up, then turn and rest them on the Power PCA.

2. Disconnect the capacitor.

a. Before disconnecting the capacitor, note the polarity and routing of its two wires: the red wire to the spade connector next to the red inductor, and the white wire to the spade up in the corner of the Power PCA.

b. Unplug the defibrillator capacitor from the Power PCA by pulling straight up on its spade connectors with needle nose pliers. Take care to not stress the wires.

3. Remove the capacitor.

a. Slide the wires out through the hole in the foam base.

b. Using a clip lead, short the capacitor’s terminals together to prevent charge accumulation and lay the defibrillator capacitor aside.

► Replacement

1. Replace the capacitor.

a. The new capacitor will come with a shorting bar connecting the two terminals. Disconnect the shorting bar.

b. Slide the wires through the large hole in the foam base.

2. Connect the capacitor.

Plug the terminals onto the spade connectors on the Power PCA. Orient the wires so they point toward the center of the Power PCA, as shown in Figure.

3. Restore the capacitor to its final position.

a. Pivot the capacitor around to the left.

b. Guide the white wire through the slot in the foam base.

c. Lower the foam base onto the Power PCA.

► Delivered Energy Accuracy:

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