Maintenance
Dismantling and Cleaning Procedures
Thermo Fisher Scientific
Prima PRO & Sentinel PRO Mass Spectrometers User Guide
10-11
Figure 10
–12.
5 x 20 mm ceramic (mains supplies)
Table 10
–2.
Power distribution unit fuses
Fuse
Number
Supplied
Unit
Voltage Rating Type
Manufacture
F1
Magnet
30 V
10 A
ATO
Littelfuse 257 010
F2
Probe heater
24 V
2 A
ATO
Littelfuse 257 002
F3
Auxiliary
heater
24 V
2 A
ATO
Littelfuse 257 002
F4
Inlet power
24 V
4 A
ATO
Littelfuse 257
004
F5
Amplifier
24 V
1 A
ATO
Littelfuse 257 001
F6
Turbo pump
24 V
4 A
ATO
Littelfuse 257 004
F7
Vent valve
24 V
1 A
ATO
Littelfuse 257 001
F8
Aircon fan
24 V
2 A
ATO
Littelfuse 257 002
F9
CPU carrier
24 V
1 A
ATO
Littelfuse 257 001
F10
User I/O
24 V
4 A
ATO
Littelfuse 257 004
F11
Analyser
24 V
2 A
ATO
Littelfuse 257 002
Table 10
–3.
CPU and user I/O carrier fuses
Fuse
Number
Supplied
Unit(s)
Voltage Rating Type
Manufacture
F1
Digital O/Ps
(non-volt-
free)
24 V
2 A
ATO
Littelfuse 257 002
F2
Digital I/Ps
(non-volt-
free)
24 V
2 A
ATO
Littelfuse 257 002
F3 to
F14
Digital O/Ps,
Individual
24 V
1 A
ATO
Littelfuse 257 001
Table 10
–4.
Inlet control fuses
Fuse
Number
Supplied
Unit(s)
Voltage
Rating
Type
F1
Mains heater
115/230 V
5 A
5 x 20 mm FF
F2
Solenoid
valves
24 V
1 A
ATO
