Series 4060
3.External hazardous voltages which may be connected to the Analyzer alarm relay connections.
Procedure for Removal of Internal Inaccessible Shock Hazards
CAUTION: SERVICING OR MAINTENANCE OF THE ANALYZER SHOULD ONLY BE DONE BY SUITABLE TRAINED PERSONNEL. TO AVOID THESE INACCESSIBLE HAZARDOUS VOLTAGES WHEN SERVICING THE SERIES 4060, PERFORM EACH OF THE FOLLOWING STEPS, IN THE ORDER GIVEN, BEFORE SERVICING BEGINS:
1.Switch off the power to the Analyzer and remove the main (line) power cord from the Analyzer.
2.Remove all external voltages from the connections to the alarm contacts.
3.Wait one minute.
4.Discharge the anode supply voltage.
a.Connect one end of an insulated (to 1000 VDC or more) clip lead to Analyzer chassis ground (the standoff for the upper right corner of the mother PCB).
b.Put one end of a 500V rated 1000 ohm resistor in the other end of the clip lead.
c.Check the voltage between chassis ground (the standoff for the upper right corner of the mother PCB) and the top side of R2 at PCB number B74671. It should be between
If it is absolutely necessary to work inside the instrument with power on, use the ONE HAND RULE:
Work with one hand only.
Keep the other hand free without contacting any other object. This reduces the possibility of a ground path through the body in case of accidental contact with hazardous voltages.
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