Teledyne 3350 - Microprocessor based control room monitor for personnel safety - Manual (Page 20)

3 Installation Model 3350
3-4
Teledyne Analytical Instruments
Figure 3-3 AC Input Power Connections
The universal power supply allows direct connection to any 100-240
VAC, 50/60Hz power source. The fuse block, to the right of the power cord
receptacle, accepts two 5x20mm 0.5 A, 250V IEC type T fuse. (See Fuse
Replacement in chapter 5, Maintenance.)
The Power switch is located on the right-hand end of the Control Unit
power source input receptacle assembly.
3.5.2 Battery Backed Standby Power
An optional Battery Backed Standby Power Configuration is offered on
the Model 3350 for potential power failure or "brown out" conditions.
Power outages will not interfere with a properly-working Model 3350
oxygen alarm if it is installed and used correctly. The standby power source
uses a rechargeable lead acid battery. If the AC power is temporarily im-
paired (“brown-out”) or interrupted, the stand-by power supply takes over
and keeps the analyzer in operation.
Figure 3-4 DC Battery Backup Input Power Connections