Indicates the accumulator is currently being charged.
The manufacturer, , strictly specifies that any internal repairs, calibrations, or modifications must only be performed by trained and authorized service departments . Users are specifically warned not to open the casing or attempt to repair internal electronic components.
20, 50, 100, 160, 250, and 360 Joules (into a 50 Ω load).
Proper —covering maintenance, troubleshooting, and repairs—must be conducted by authorized personnel trained by Metrax, adhering strictly to technical standards to ensure safe operation. primedic defi b service manual work
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Most service issues on the Primedic Defi B relate to the internal battery pack. NiCd batteries are vulnerable to the "memory effect" if they are continuously short-cycled or left plugged into charging units indefinitely. PRIMEDIC™ Defi-N / Defi-B - Frank's Hospital Workshop
Ah. Here was the clue. As Klaus triggered the "Charge to 200J" sequence from the manual's test procedure (Table 9-2), the voltage on U3 pin 8 dipped to 9.8V—just for 30 milliseconds. The TL494 would then hiccup, the charging would pause, then resume. Error Code 17. Indicates the accumulator is currently being charged
: Internal rechargeable NiCd accumulator pack (typically 14.4V / 1400mAh configuration).
"Defi-B" stands for Defibrillation-Biphasic. Unlike traditional monophasic defibrillators, which deliver current in a single direction, biphasic devices deliver current in two directions.
The Primedic Defi B is not just another Automated External Defibrillator (AED). Manufactured by Metrax GmbH, a German company renowned for precision engineering, the Defi B is a rugged, semi-automatic device designed for professional use in clinics, ambulances, and first-response vehicles. Unlike consumer-grade AEDs, the Defi B requires rigorous, scheduled maintenance that goes beyond a simple battery check. 20, 50, 100, 160, 250, and 360 Joules (into a 50 Ω load)
To prevent the "memory effect," it is recommended to use the battery until the red status LED lights up before recharging. :
Do not use the device near flammable or explosive substances. Cooldown Period:
"09.11.2024 – S/N 4421-09 – Intermittent charging (Error 17). Replaced LM317L (U3 regulator) and C14, C17, C22 per Sec. 9.3.2. All tests passed. – K. Richter"
: Use standard medical disinfectants for the housing. Ensure the paddle surfaces (electrodes) are clean and free of old gel to maintain good electrical contact. Authorized Service Only
Consult the Primedic Service Manual or contact a service center. Battery degradation Replace the 14.4V battery pack. Safety Controls and Testing