USED CONDOR Nellcor Puritan Bennett Power Supply MPN MSP1499
90 Day Warranty
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For use with Nellcor Puritan Bennett 840 Ventilator
The power supply which is a single FRU (Field Replaceable Unit), outputs +5, +12, +15, and -15 V to power the ventilator system. It also provides DC power for BPS charging. Power supply inputs are either AC from facility power or BPS DC power (battery power). The power supply accepts inputs of 80 to 269 V AC rms at 47 to 63 Hz. Specifically, the power supply’s outputs are as follows: • VH +5 V (remotely sensed) • VH +12 V • VH +15 V • VH -15 V • GUI +5 V (remotely sensed) • GUI +12 V (remotely sensed) • BPS +36 V • Relay +12 V (from the primary) A power fail circuit in the power supply detects the drop of the bulk +31.5 V (the input to the power supply’s main converter) and notifies the BD CPU PCB. The BD CPU PCB in turn generates a non maskable interrupt (NMI) signal. The AC monitor circuit provides an analog voltage scaled to the AC input voltage. This voltage is fed to the AI PCB and monitored by software. The power supply is protected against nominal line transients, overtemperature, overload, and short circuit conditions. The power supply has no test points, and cannot be field-adjusted. Power supply voltages are displayed during the analog data display test in EST.
