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Introduction
Cooling Fans
10 Orbitrap Fusion Series Hardware Manual Thermo Scientific
Cooling Fans
Over 20 fans, including those in the power supply subassemblies, provide internal cooling for
the Orbitrap Fusion Series MS. Cooling air enters through the three main air intake fans on
the right side of the mass spectrometer. Exhaust air exits the instrument from the left side
ventilation slots.
The only user-serviceable part is the right-side air filter in front of the air intake fans. For the
recommended maintenance schedule, see Chapter 8, “Maintenance.”
Analog Input
The two analog channels connect to two separate 12-bit analog-to-digital converters (ADC)
for on-demand conversion of the input voltage. The conversion rate depends on the mass
spectrometer rate.
1 Chassis Earth ground (for pins 3 and 4)
3, 4 2V Max:
+ (positive, pin 3) and
– (negative, pin 4)
(Channel 2) Provides a connection for an external
device, such as an LC instrument.
Input: 0–2 Vdc (voltage clamps at 5 Vdc)
5 Chassis Earth ground (for pins 7 and 8)
7, 8 10V Max:
+ (positive, pin 7) and
– (negative, pin 8)
(Channel 1) Provides a connection for an external
device, such as an LC instrument.
Input: 0–10 Vdc (voltage clamps at 15 Vdc)
Other connectors
– USB (2 ports) Provides a connection for the syringe pump and
divert/inject valve.
– Ethernet 1000 Base T Provides a connection for the Ethernet switch.
Table 4. Pin-out descriptions for the communication connectors (Sheet 2 of 2)
Pin Name Description
CAUTION To ensure safety and proper cooling, always operate the mass spectrometer with
its covers in place. This is also necessary to comply with product safety and
electromagnetic interference regulations.
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