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37370 Instruction Manual (Rev. 0)
Insert the fresh snaphat paying attention to its orientation; its white dot should match the
dot on the PCB. A “click” assures you that a proper insertion took place.
Reassemble the bottom panel.
To restore the configuration, you have to restore the standard factory parameters first:
depress the
F1
key and keep it depressed for some seconds, then depress together
F4
.
The caption “
DEFAULT PARAMETERS RESTORED
” confirms the action.
At this point, set again date and time, see paragraph 7.2 and configuration, see para-
graph 5.6.
If a Radiometer 37300 is available, recalibrate, see paragraph 9.2.
10.2
Replacing the Bulb
You will realize, in the course of an experiment that the bulb is burnt-out (glow lamps
have unfortunately a finite life span) because the missing I.R. source causes the counter
to stop automatically after the preset cut-off time, see paragraph 5.6.4.
But even before that, you will have noticed the absence of any animal reaction! The bulb
is located into the I.R. Source, see paragraph 2.1.
To replace the bulb and, in general, to service the I.R. Source, it is necessary to open the
I.R. Emitter vessel; use a 1.5 hex. wrench to remove the 3M set screws located around
the Vessel upper rim: lift the top panel and then gently overturn it to make the bulb holder
fully accessible.
To take the bulb out, first loose the two miniature contact screws which fasten the socket
to the bulb current-carrying studs. Swing the socket apart.
Free the bulb by removing its holding collar. You will notice the small protrusion on the
glass rim of the bulb reflector.
Position the fresh bulb into its pentagonal receptor and rotate it until the mentioned pro-
trusion mates the rectangular cut of the supporting winglet. Try to turn the bulb, both CW
& CCW. If it doesn’t, it means the fit is O.K.
Reposition the collar. Then fit the socket to the studs of the fresh bulb and retighten the
contact screws. There is no polarity to worry about. Avoid leaving “finger prints” on the
concave reflector, while you are handling the bulb.
Needless to add, recalibrate (see paragraph 9-CALIBRATION).
10.3
Cleaning the Optics Thoroughly
Fan cooling, using room air, and protecting the I.R. optics from dust are both laudable but
– alas – conflicting requirements.
Summary of Contents for 37370
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