Novametrix Medical Systems OXYPLETH 520A, Service Manual

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Mains Voltage Configuration
5-Jun-01 Model 520A Service Manual
39
PRELIMINARY
3. Using a flat blade screwdriver, pry the fuse access door open to expose the
fuse housing. Pry the fuse housing out from the power entry module.
4. Install the proper type and rating fuse for the mains voltage setting required.
5. Position the housing into the power entry module so that the desired voltage
is furthest away from the switch (see below).
6. Close the fuse access door and verify that the proper mains operating voltage
is displayed.
AC Mains on older style assemblies
10.5.3
The Model 520A will operate on line voltages of 100, 120, 220 or 240 VAC
±
10%
at 50/60 Hz. At 100/120 VAC,two 0.5 Amp, 250 Volt, Slo-Blo (time delay) AC
Mains fuses are required, while Two T 250 mA, 250 Volt fuses are required when
operating at 220 or 240 VAC. For continued protection against fire hazard, replace
only with fuse(s) of the same type and rating. The rear panel Power Entry Module
(PEM) houses the AC Mains fuses and is where the input voltage is selected. It also
houses the AC Mains Power switch: set to “|”, AC Mains power is presented to the
internal circuitry; set to the “0” position, power does not pass through the PEM.
200-240 VAC 250mA 250V
Fuse housing
Fuse access door
Set for 100-120V operation
Set for 200-240V Operation
11
5V
Line operating voltage
2
30V