Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-145
Figure 122 Penning Gauge (A: Magnet Housing, B: Body Tube)
Refitting the Penning Gauge
Reassemble the Penning gauge in the reverse order of removal. Use gloves and
a clean surface as you complete the following steps:
1 Reconfirm that the O- ring is still in place in the manifold (on the back of
the vacuum chamber where the Penning gauge fits).
2 With the flange end of the tube toward the vacuum chamber, slide the
tube back into the locking plate from below.
3 Tighten the 3 screws of the locking plate.
Alternatively tighten the 3 screws several times to keep tightening pressure
equal.
4 Install the Penning gauge housing.
Gently slide the Penning gauge housing over the tube and, holding the black
base of the housing, turn clockwise to lock.
5 Connect the Penning gauge cable by plugging back into the Penning
gauge housing.
6 Start the instrument.
Please refer to Chapter 3, “Startup, Shutdown and Status”.