Respironics BiPAP Focus - Power; Triggers and Cycles; Environmental

Chapter 3
Theory of Operation
REF 1029568 Rev A BiPAP® Focus™ Ventilator Service Manual © Respironics, Inc. 3-11
Power
Triggers and Cycles
Supplemental Oxygen
Environmental
Input range 90-264 V~, 47-63 Hz, 90 VA
Battery backup 3.8 amp-hour (Ah) nickel metal hydride (NiMH) battery
provides 45 minutes of operation at default settings.
System automatically activates the battery charge cycle
when connected to AC power and the ON/OFF switch is
ON ( | ) (during normal operation or Standby mode).
Recharge time is typically under 5 hours, but may extend
further depending on machine settings if operating on
battery prior to recharge, or if operating in elevated
ambient temperature (above 28°C). Charge is complete
when the green CHARGING LED extinguishes.
Nurse call station relay Rated current: 0.280 A
Rated voltage: 250V
Fuse type No replaceable fuses.
Power cord Refer to the“Complete Parts List” on page 9-1
Volume-based trigger
Flow reversal cycle
Shape signal
Timed trigger
IPAP maximum of 3.0 seconds
Peak flow cycle
Flow and pressure into
oxygen valve
Maximum flow: 15 L/min at ambient pressure
Temperature Operating: +5 to +35°C at 10 to 95% relative
humidity
Storage: -20 to 60°C at 95% relative humidity
Atmospheric pressure Operating: 83 to 102 kPa (830 to 1020 mBar)