Explorer II X-Ray Model P

General Information

All Procedures for this X-Ray have been taken from the original Ritter Service Manual and have been edited. For more detailed information refer to the original Ritter Service Manual





The following procedures are intended for qualified X-Ray Technicians and should not be attempted by any one else.  Failure to heed this warning could result in bodily injury.


Turn each x-ray head to be tested so that no person will be in the path of radiation and place a lead disc (O.S. 120) inside the Cone to block radiation.

Taking an Exposure

Turn the power to the x-ray on at the source.  Press the power switch to on.  The lights at the x-ray head support arms will come on when the power switch is activated even though the keylocks are still off. 

At the Master Control, turn the keylock switch to on; at which time the “ready” (amber) light on the Master power panel will light.

The amber ready lights on the remote control units will not light until the keylock switch on the respective remote panel (which activates the control) is turned on

Adjust the Transformer knob for an indication of 65 on the KVP meter on the power panel.  


When an exposure is made, the (red) X-ray light will be ON for the duration of the exposure.  The Ready (amber) light will go OFF and stayed off as long as the exposure switch is being activated.  

Make two exposures at this setting (65 KVP, shortest time exposure).  Rotate the Time Selector knob to a setting for 2 seconds.

CAUTION     Allow at least 35 seconds between exposures

Make two more exposures. Re-adjust the Transformer knob for an indication of 90 KVP, and then repeat the 2-second exposure.

If any one of the events in ( Taking an Exposure ) did not occur Contact Schrader Electronics for repairs and shipping instructions.