284 Maintaining Your GC
14 Maintaining the NPD
26
Install the bead assembly and restore normal operating
conditions. (See “To Replace the NPD Bead Assembly” on
page 272.) (Do not reset the bead counter unless
replaced.)
After installing new collector parts, the NPD leakage
current should be lower. (See “To Check the NPD Leakage
Current” on page 285.) If the leakage current is abnormal,
check for proper reassembly of the detector (especially
where the electrometer interconnect contacts the collector
assembly) and for leaks.
27 Reset the EMF counters. See To Reset an EMF Counter in
the Operation Manual.