Thermo Scientific 42i Instruction Manual page 158

Preventive Maintenance
Thermoelectric Cooler Fins Inspection and Cleaning
Thermoelectric Cooler
Fins Inspection and
Cleaning
Fan Filters Inspection
and Cleaning
5-4 Model 42i Instruction Manual
11. Connect the power cord and turn the instrument ON.
Use the following procedure to inspect and clean the thermoelectric cooler
fins.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component. For more information
about appropriate safety precautions, see the "Servicing" chapter.
1. Turn the instrument off and unplug the power cord.
2. Remove the instrument cover.
3. Locate the PMT cooler
4. Blow off the cooler fins using clean pressurized air. It may be more
convenient to vacuum the cooler fins. In either case, make sure that any
particulate accumulation between the fins has been removed.
5. If necessary, use a small brush to remove residual particulate
accumulation.
6. Replace the cover.
7. Connect the power cord and turn the instrument ON.
Use the following procedure to inspect and clean the fan filters.
1. Remove the two fan guards from the fans and remove the filters.
2. Flush the filters with warm water and let dry (a clean, oil-free purge will
help the drying process) or blow the filters clean with compressed air.
3. Re-install the filters and fan guards.
(Figure 7–2 and Figure
▲
7–6).
Thermo Fisher Scientific