Leica DM IRB manual Changing the Hg and Xe lamps on lamphousing 106 z

Changing the Hg and Xe lamps on lamphousing 106 z

n.b.:

●Always disconnect the power unit from the mains before carrying out assembly work.

●Wait for the lamphousing to cool down for at least 15 minutes as otherwise it may explode.

●Never touch glass parts of the burner with your bare hands as finger perspiration burns in.

●Wipe off any finger perspiration and dirt carefully (perhaps using alcohol).

●Adjust the lamps immediately after ignition.

●Avoid switching on and off frequently, as this greatly reduces the life and stability of the lamp. Hot Hg lamps do not ignite again until they have cooled down. It is advisable to let new burners burn in for a few hours without interruption.

●Ensure that lamphousing is adequately ventilated. Never block the air vents with paper, etc. (fire risk).

●It is best to keep a record of the number of hours a lamp has been in use and compare it with the manufacturer’s specifications.

●We cannot accept any liability for damage resulting from lamp explosions.

●Disconnect the power unit and the micro- scope from the mains.

●The LH 106 z L is opened by undoing the fixing screws (88.4), pulling the cut-out plug slightly out the socket (88.11) and flipping up the lid of the lamphousing.

●Slacken the safety screws (88.10) and pull out the lamp holder (Fig. 90).

●Insert the burner as follows, making abso- lutely sure to observe the safety measures described above:

●If there is a plastic cover on the burner, leave it on for the time being.

●Insert the burner so that the lettering is upright after insertion (different diameters of the metal base for the Hg 100 and Xe 75 burners ensure that these are always inserted the right way up).

●If the bulb has a glass seal point (90.2), the burner is turned so that this point will be at the side, not in the light path.

●Put the upper pin of the burner between the clamps of the flexible power supply and clamp with screw (90.1).

●Unscrew the stud (90.4) in the holder slightly, insert the lower end of the metal base and retighten the stud.

●Remove the protective covering from the burner now.

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