A-A-54039
least 30 minutes. This requirement shall be tested in accordance with ASTM F960 using the internal battery, the 120 amp hour external battery, and using 110 volts AC at 50, 60, and 400 Hz. It shall also be tested using its internal battery in accordance with test C, “Vacuum Capacity Using Battery” started herein.
Flow rate. The free airflow at the patient end of the suction tube shall be at least 30 LPM using and of the specified power sources (see paragraph titled “Power Sources”) and operating at specified temperature extremes (see paragraph titled “Operating Temperature Range”) . This requirement shall e tested in accordance with ASTM F960 using the internal battery, the 120 amp hour external battery, and 110 volts at 50, 60 and 400 Hz.
Battery charger. This apparatus shall be provisioned with a battery charger, operational from nominal 110-125 volts, 50/60 Hz. It shall be capable of recharging the totally depleted internal battery within 24 hours.
Internal battery. The apparatus shall be equipped with a 12 volt internal battery capable of operating the unit in accordance with the requirements specified herein. (Multiple batteries wired to provide 12 volts DC is acceptable).
Totally depleted internal battery shall be rechargeable within 24 hours. This requirement shall be tested in accordance with test B, “Recharge Time” stated herein.
Internal battery operating time. The battery operating time, with vacuum adjusted at 120 mmHg, shall be at least 30 minutes when cycled through 5 cycles of 6 minutes each. Each cycle shall have periods of a 2 minute period with patient tube occluded, a 1 minute period with patient tube open (free air flow), a 2 minute period with the pump turned off (rest period). This requirement shall be tested in accordance with test C, “Fully Charged Battery Operating Time” stated herein.
Interlocking switch(es). The apparatus shall be provisioned with interlocking switch(es) to select “OFF/CHARGE”, “AC/ON”, “EXT. DC/ON”, and “INT. BAT/ON”. Switch arrangement shall not allow inappropriate selection of circuitry, causing damage to apparatus.
Indicating lamps. The apparatus shall contain separate indicating lamps, indicating “PUMP ON” and “CHARGER ON”.
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