Service; Sample Chamber Lights; Optional Uv Lights - Thermo Scientific 1300 Series Operating Manual

Section 6
Maintenance

Sample Chamber Lights

Optional UV Lights

6-2 1300 Series A2
Checking these items on a routine basis, will help to ensure your
cabinet is always safe and operating as intended.
Warning The diffuser plate on the chamber ceiling serves as protection for
the downflow filter and prevents refluxing of downflow air. When
scanning the filter surface for a leak test, the perforated plate must be
removed.

Service

As filter replacement is an interference with the safety system of the unit,
filters must only be replaced by adequately trained and authorized service
personnel.
Warning For any service work in a potentially contaminated section of the
biological safety cabinet, the unit must first be decontaminated.
The sample chamber is illuminated by one (4 ft units) or two (3, 5 & 6 ft
units) fluorescent bulbs. The fluorescent bulbs are installed in the light
mounting frame in the sample chamber (Fig. 6-1).
1. Switch the unit off and disconnect it from the power source.
2. Move the window to the cleaning position (below closed position) to
ensure a sufficient gap between the window's upper edge and the light
dome.
3. The fluorescent bulbs are installed in rotating sockets. To remove,
rotate the bulb counterclockwise to disengage the latch and remove it
from the sockets.
4. To install, slide the bulb contact pins into the rotating socket grooves
and rotate the bulb clockwise to latch the sockets.
The optional, factory installed UV light is installed in the chamber ceiling
immediately behind the window. The UV light should be replaced after
1500 operating hours. See Figure 6-1.
1. Turn the unit off and disconnect it from the power source.
2. Move the window to the maximum open position.
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