INSTALLATION
B-4
Gendex Dental Systems
ORALIX AC SYSTEM
1.3.
ADDITIONAL CABLING
A mains cable (2 poles + ground) shall be prepared from the mains supply fusebox (or breaker) to the intended
location of the Timer.
Another power cable (2 poles + ground) shall be prepared from the Timer to the location of the Wall Support.
WARNING
The total resistance of the earth wiring, from the mains input earth point to any exposed
metal part of the equipment, shall be lower than 0.1 Ohm.
In case of long distances between Timer and Wall Support a separate protective earth
conductor of the proper size may be needed to fullfill this requirement.
The Timer is provided with a window on the rear side for the entrance of the cabling.
The Wall Support is provided with an electrical knockout, in corrispondence of which the cable duct in the wall
should terminate.
NOTE
The recommended sizes of the power cables wires and the relevant resistances/meter are
shown below:
recommended cable wires size
resistance
AWG 16 1.35 mm
2
2 x 0.015 Ohm/meter
AWG 14 2.11 mm
2
2 x 0.0094 Ohm/meter
It must be considered that the length of these cables will affect the total mains resistance of the system, and
must be kept to a minimum.
For example a 5 meters cable of size 1.35 mm
2
has a resistance of 0.15 Ohm; adding on top a mains
resistance of 0.65 Ohm, as measured at the input of the Timer, and adding also the fixed resistance of the
Folding Arm cable (0.14 Ohm), it will result a total mains resistance of 0.94 Ohm (0.8 Ohm line resi
0.14 Ohm Folding Arm cable), which is the value specified for the nominal performance of the system at 230
Vac mains supplies.
1.4.
UNPACKING
Unpack each box and check the completeness according to ITEMS SUPPLIED BZ-3.
Verify also that the rated voltage of Timer and Tubehead, as stated on the type number plates, are correspond-
ing to the local situation.
Printed on: 22 Mär 2012, 09:28:10 am; Printed by: TOBIAS BAUER
