Thermal Cut-Off; Tension Adjustment - Labomed PRIMA ENT User Manual

13

THERMAL CUT-OFF

The instrument is designed with safety provisions. Fans in the electrical box provide free-
and forced-air circulation to cool the electronic components. The instrument also includes a
built-in safety mechanism called "auto thermal cut-off." This mechanism is activated when
the LED temperature rises above 70°C, at which time power to the LED will be cut off. The
LED indicator light will glow orange when auto thermal cut off has been initiated. Allow the
LED to cool down before switching it on again.
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TENSION ADJUSTMENT

After any optional accessories are added to the
microscope, suspension arm tension must be adjusted
to compensate for the additional weight, as follows.
1. Remove the plate as shown by removing two
screws (see Fig. 19).
2. Loosen the two allen screws as much as
possible using the 4 mm allen wrench (see Fig.
20). Note that these two screws will not come
out.
3. Use an 8 mm allen wrench in bolt (A) (see Fig.
21). Rotate it clockwise to increase the tension
as desired. Rotate it counterclockwise to
decrease the tension.
4. After achieving the desired tension, retighten
the two screws shown in Fig. 20.
5. Reinstall the plate shown in Fig. 19.
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Prima ENT/DNT
Fig 19
Loosen two screws
Fig 20
A
Fig 21