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.
s
The sample chamber is illuminated by one (4 ft units) or two (6 ft units)
LED bulbs. The LED bulbs are installed in the light mounting frame in
the sample chamber (Fig. 6-1).
The lifetime of LED bulb is 25000h.
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 LED 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 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. The UV light model is G36T5.
1. Turn the unit off and disconnect it from the power source.
2. Move the window to the maximum open position.
3. Wear protective gloves to prevent skin oils from burning into the bulb.
The UV bulb is 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.
6-2 1500 Series A2
Thermo Scientific
Section 6
Maintenance
Service
Sample Chamber Lights
Optional UV Lights
