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Technical Information
These models all contain a diaphragm pump as shown above V8.
Manipulation of the valves using the Manual Valve Control screen must only be
CAUTION
performed by persons who are extremely familiar with the leak detector as
damage to critical components (e.g., spectrometer, turbo) can occur.
Press the circle corresponding to that valve to change the state of a specific valve.
Table 13 Typical HLD Maximum Starting Current and Duration
Leak Detector
Operating Stat
Foreline
Vent
Rough
Gross Leak Test
Contra-Flow Test
Midstage Test
Hold
Sniff
Read Std Leak
Agilent Helium Leak Detector User Manual
V1
V2/V3
Contra-Flow
Valve
Valve
Test Mode
O
C
C
O
C
O
O
O
O
C
O
C
O
O
O
C
O: Open
V4/V5
V6
Midstage
Calibrate
Valve Fine
d Leak
Test Mode
C
C
C
C
C
C
C
C
O
C
C
C
C
C
C
O
V7
V8*
Vent
Ballast
Valve
Valve
O
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C: Closed
V8*
Exhaust
Valve
O
C
N/A
O
O
O
O
O
131
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