SediGraph III 5120 Service Interlock Circuitry
Mar 2010 2-17
• The X-ray key-switch (located on the front panel) controls whether X-ray generation is
allowed or not. When the switch is in the ON position X-rays can be generated, when
the key-switch is OFF X-rays cannot be generated.
• The X-ray shutter assembly is operated by a push pin that rides in a plunge cut in the
Analysis module door. One end of the plunge cut is not as deep as the other, which
allows the push pin to open or close the mechanical shutter as the door’s position is
changed. The door must be completely closed to generate X-rays. There is a spring
behind the shutter pin. If the shutter pin is lost, this spring will keep the shutter closed
and not allow X-rays to be generated.
Interlock Serviceable Items
003/39041/00 Socket, Lamp
003/39046/00 Lamp, 28VDC
003/51149/00 Switch, keylock
003/51170/00 Magnet
003/51170/02 Magnet switch
004/28764/00 Spring Compression
510/25836/00 Pin, Shutter Interlock
512/60808/00 Cable, Dual magnetic switches