Replacing The 24V Power Supply - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Replacing the 24V
Power Supply
Thermo Fisher Scientific
Use the following procedure to replace the 24V power supply on the
electrical panel in the rear of the system
Equipment Required:
Phillips screwdriver
Small Phillips screwdriver
Flat blade screwdriver
24V Power Supply
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal components.
1. Shut off the 24VDC circuit breaker on the breaker box.
2. Using the Phillips screwdriver, remove the 2 grounding wires from the
grounding strip on the right rear side of the rack near the electrical
panel.
3. Using the Phillips screwdriver, detach the electrical panel by loosening
the right 2 mounting screws and removing the left 2 mounting screws.
Slide the panel slightly to the left to free it.
4. Carefully turn the electrical panel around to access the rear
components, being careful not to pull any of the wires out or damage
any of the components.
5. Using the small Phillips screwdriver, remove the wires from the
connector on the top and bottom of the power supply. Note or mark
the location of each wire to facilitate re-connection.
6. Using the flat blade screwdriver, pull down the tab on the bottom of
the power supply to unlock it, while lifting the power supply off of the
din rail.
7. To install the new power supply, hook the upper tabs of the rear of the
power supply onto the din rail, and then firmly push the bottom of the
supply toward the panel until it locks into place.
Preventive Maintenance and Servicing
Electrical Panel Components
(Figure 5–57).
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Omni FTIR Multi Gas CEMS Instruction Manual 5-75