Agilent Technologies Helium Leak Detector
134
DRAFT 12
/11/17
NOTE Always perform a Full Internal Calibration after any
spectrometer maintenance:
Table 8-3 Fuses and Circuit Breakers
Function
Type, MFG, PIN Location
Circuit Breaker
❑ Main Power Supply: 20 A, 250 V
AC, SCHURTER
Model EF12, PIN
EF1
2.2196.1110.01
❑ Internal Vacuum Pump: 6 A,
250 V E-T-A, PIN
1
110-Fl12-PIMl-6 A
Power Entry Module
Rear Panel
Fuses (PCB overcurrent
protection)
1.85 A, 33 VDC, Raychem
SMD185-2
❑ Motherboard (RT400)
❑ Valve Driver (Fl)
❑ Ion Source (Fl)
5x20mm, T4A, 5A, 250V AC,
Cooper/Bussmann S505-4A
Turbo Controller (F2)
❑ Spectrometer header replacement
❑ Filament replacement
❑ Ion source assembly replacement or cleaning
Table 8-3 lists the fuses and circuit breakers.
NOTE Only a qualified technician should replace circuit breakers and
fuses. Use only circuit breakers and fuses of the same type and
rating.
Tuning adjustments If calibration is not successful or if the system is calibrated
to an external leak, tuning
can maximize the helium signal.
Mechanical pump fluid change Persistent, high helium background signal. Fluid
contaminati
on (dirty brown color indicates burnt or
contaminated fluid, milky white consistency indicates high
water vapor content in fluid).
Table 8-2 As-Required Maintenance
Function Most Common Symptom
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