Models 947, 948 and 960 Leak Detectors Operations and Service Manual
5-2
5.1 Error Condition Codes
Use Table 5-1 to identify the problem by condition code or Figure 5-2 to identify the
symptom.
NOTE
A c6 condition code means that maintenance of this
leak detector may soon be necessary. Notify Varian
Vacuum Technologies Customer Service at
1-800-8VARIAN.
Table 5-1
Error Condition Codes
Code
Problem Area
Solution
c0
Amplifier offset out
of range.
Spectrometer Tube Amplifier needs service. Notify Varian Vacuum
Technologies Customer Service.
c2
Rough pump is off.
Check power to pump, check switch position, then refer to pump manual.
c4
No emission
Select the other ion source filament. Refer to Section 4, “Maintenance”.
Replace ion source if necessary.
c5
Auto calibrate
function is out of
range
Leak detector requires maintenance. Notify Varian Vacuum Technologies
Customer Service.
c6
Auto tune function is
out of range
Tap the AUTO CAL button. A brief tap may clear this code to allow the leak
detector to operate. If this clears c6 then the leak detector is operable. If c5
appears with c6 it is the priority condition code. Press VENT to clear.
c7
Auto Zero function is
out of range
Leak detector requires maintenance. Notify Varian Vacuum Technologies
Customer Service.
c8
Power interruption
Calibrate the 947/948/960. This condition code may be accompanied by an
intermittent c9 indication. After a power interruption, wait at least as long as
the power interruption (up to 30 minutes) before initiating the calibration
procedure.
c9
System pressure is
too high
Check for vacuum leaks. Refer to Section 4, “Maintenance”.
