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Mass Spectrometer Maintenance
Saturn 2000 GC/MS, Front View
A
Main Power Switch (rear
panel)
J
Cal Gas Vial
B
Service Switch
K
Vent Valve
C
Transfer Line Heater
L
RF Coil
D
Trap Heater
M
RF Coil Adjustment Screw
E
Manifold Heater
N
Transfer Line
F LED
O Turbomolecular
Pump
G
Pneumatics Manifold
P
Cooling Fans
H
CI Cal Gas Adjust
Q
CI Shutoff Valve
I
Cal Gas Adjust
If the fans are excessively noisy, i.e., if they whine or whir, one of the fans may
be about to fail and it should be replaced.
To identify which of the two fans is about to fail, proceed as follows:
1. Remove the top cover from the Saturn GC/MS.
•
If the noise continues, proceed to step 3.
•
If the noise stops, proceed to step 2.
2. Turn off the electronics compartment fan via the service switch, and replace the
top cover.
•
If the noise returns, it is coming from the turbomolecular pump cooling
fan. Proceed to step 4.
•
If the noise does not return, remove the cover and proceed to step 3.
