General servicing procedures
Changing the tubes
It is recommended to change all five 8-Watt
254 nm UV tubes at the same time. The unit
does not require recalibration if you are replac-
ing the old sources with new sources of the same
wavelength.
1. Purchase five tubes from Hoefer, Inc.
2. Unplug the unit from the electrical supply.
3. Reach up to the inside top of unit and carefully
rotate each UV tube a 1/4 to 1/3 turn and pull
gently downward.
4. After removing all five old tubes, carefully install
the five new tubes.
5. Dispose of the old UV tubes properly.
Changing fuses
The fuses are located on the back panel and are
marked with a self-adhesive sticker.
1. Turn fuse cap 15° anti-clockwise.
2. Pull fuse and cap from the holder.
3. Pull fuse from the cap.
4. Replace the fuse.
5. Replace fuse cap and fuse into holder and turn
15° clockwise.
Changing plastic feet
The feet are fitted to the bottom of the cabinet.
They are removed by unscrewing the screw
mounted inside each foot.
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