CHAPTER 11 MAINTENANCE
• When battery voltage drops below 8.0 V the CLOCK is
automatically turned off. This is important as the CLOCK
disables the AUTO-OFF function.
If replacement of the battery becomes necessary, this is readily
accessible after removing the 4 screws at the bottom of the MINI-
PAM. The battery is attached to the bottom piece by double-sided
adhesive tape. After disconnecting the cables, the battery can be
detached by means of a screw-driver used as a lever. The
replacement battery comes with adhesive tape. When connecting the
cables, please note the proper contact polarities (red/positive and
black/negative).
11.2 Halogen lamp and its replacement
Due to a very efficient optical system, very high light intensities
can be obtained with the internal 8 V/20 W halogen lamp, without
applying the maximal allowable voltage. This results in a long life
time of the lamp which is primarily meant to generate saturation
pulses. Continuous operation is limited to 5 min periods in order to
avoid excessive internal heating of the MINI-PAM. For longer
illumination periods we recommend the External Halogen Lamp
2050-HB in combination with the Leaf Clip Holder 2030-B.
For replacement of the internal halogen lamp the MINI-PAM is
opened by removing the bottom part (4 screws). The lamp is held in
a pre-focused position by an aluminum mounting-frame, which is
fastened to the optical compartment by two screws. These screws can
be removed with a hex nut screw driver delivered together with the
MINI-PAM. Spare Halogen Lamps (SL-8/20) with mounting-frame
are available.
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