Installation Options
Preva
10
Environmental Factors
Use
The Preva Dental X-ray System is intended for indoor use for normal dental
applications at temperatures in the range +50 F / +95 F [+10 / + 35 C] and at a
maximum altitude of 12,000 ft [3657 m]. Humidity should not cause
condensation to form on the unit.
Storage
Storage temperature should not exceed the range -31 F / + 150 F
[-35 C / + 66 C].
Support Requirements
The Preva Dental X-ray System is designed to mount on a single wood 2x4-
inch drywall stud or equivalent wall support. It can also be mounted on
concrete or other similar wall construction. Mounting to a plywood or particle
board wall is not acceptable. Verifying the wall support capability and the
selection of the proper mounting hardware is the responsibility of the installer.
Please note that a two-stud wall plate assembly (30-A2042) is available to
mount on two wooden studs. A metal stud mounting kit (30-A2043) is also
available.
The wall support and mounting hardware for the Preva must withstand a 100
lb. [45.4 kg] shear load and a 500 lb. [227 kg] withdrawal force at each of the
mounting bolts. The wall fabrication and attachments to the building structure
must be capable of withstanding a load moment of 920 ft lbs [127 Kg m].
Electrical Requirements
Mains Power
Supply
The Preva Dental X-ray System requires a 3-wire single phase AC power
mains that contain line conductor, neutral conductor, and protective earth
conductor. It is recommended that the unit be installed with a dedicated
electrical line connected to a breaker with a minimum 15 amp rating. The
wiring must provide for a permanently grounded power line configuration.
Line Cord Use
The installer must determine the suitability of installing the Preva with a line
cord. If a line cord is used, the installer must ensure that the unit is properly
grounded and has the required line rating.
Line Voltage
AC 100 V to 250 V, 50 Hz or 60 Hz (See complete specifications on page 113)
Fuse Rating
5 A, 250 V, UL Recognized (See complete specifications on page 113)
Max Line
Resistance
For normal function of the Preva Dental X-ray System the resistance of the
power line should not exceed 0.4 Ω at nominal line voltage.
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