Defibtech DDU-120 Series - Manual (Page 39)

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5.2.2 Checking the Condition of the Unit and Accessories
Inspect the unit for cracks or other signs of damage on the case, as well as dirt or contamination,
especially in the areas around the connector socket and battery pack opening.
If any cracks or other signs of damage are observed, remove the unit from service and contact an
autorized service center.
If any dirt or contamination is observed, refer to the “Cleaning” section for guidance on cleaning your unit.
5.2.3 Running a Manually Initiated Self-Test
To perform a manual Self-Test, begin with the unit powered off. Press and hold the ON/OFF button
until the unit announces that it is performing a Self-Test – this should take approximately 5 seconds.
Once you hear the announcement, you may release the button. Note that a manual Self-Test
consumes approximately one shock’s worth of energy, and will therefore reduce the usable
capacity of the battery.
The unit will run a series of internal tests, including charge and shock tests. When the Self-Test is done,
the unit will announce its status and power off. You may also manually terminate the Self-Test before it
completes by pressing the ON/OFF button again, which will abort the Self-Test and power off the unit.
In addition, whenever a battery pack with a non-depleted 9V battery is inserted, the unit will perform a
Battery Pack Insertion Self-Test, announce the status of the battery pack, and power off.
Note that Self-Test shocks are internally dissipated so that no voltage is ever present at the pads.
Once the unit has powered off, it is immediately ready to treat a patient, unless errors were detected
which rendered the unit inoperable.
5.2.4 Replacing Pads
The Defibtech defibrillation/monitoring pads are intended for one time use only.
The pads must be replaced after each use or if the package has been damaged.
The DDU-120 AED defibrillation/monitoring pads are supplied in a sealed
pouch with the connector and part of the cable exposed. The DDU-120 AED
is designed to be stored with the electrode cable already installed. This allows
the pads to be stored in a pre-connected state for rapid deployment during an
emergency.
Caution: DO NOT remove the defibrillation pads from the sealed package until
the pads are to be used. The packaging should be opened only immediately prior
to use, otherwise the pads may dry out and become non-functional.