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IPN 074-397-P1G
HAPSITE Smart Operating Manual
Figure 15-6 Pres Option on the Stat Menu
Figure 15-7 MS Pressure on the Service Module Tab
A MS Vacuum Pressure reading of "Below Gauge Range" indicates the HAPSITE
is ready to sample. If the MS Vacuum Pressure is 3E-3, order a new NEG Pump.
If the MS Vacuum Pressure is 6E-3, replace the NEG Pump.
NEG pumps have an expected life of approximately 150 hours. If the NEG Pump
has 70 hours or less consider trying a bakeout (formerly called Reactivation) to
extend the NEG Pump’s life. To check the NEG Pump hours used, go to the NEG
Status tab on the Properties menu.
HINT: If the NEG Pump has less than 150 hours, a bakeout or reactivation can be
tried, though the results are likely to be limited.
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