Service manual

22 Infant Flow
®
SiPAP
675-120 Revision D May 2005
Chapter 4: System Construction
CAUTION
Where the integrity of the external protective earth conductor is in doubt the
equipment shall be powered by its internal power source (battery).
The IFSD is AC powered with an integral rechargeable DC battery that provides
power for up to two hours without any interruption of performance or function. If the
AC power supply fails or is disconnected, the IFSD automatically switches to battery
power and gives an audio and visual alarm.
The IFSD is enclosed in a case with Operator controls and input connectors on the
front and rear panel. The front panel is shown in Figure 1. The back panel is shown
in Figure 2. The case incorporates non slip feet for table top use or must be fitted to
a dedicated stand. The major components within the casing are:
• a gas module
• an electronics module
• a front panel module
• a patient trigger module
• a firmware module