Index revision : F - November 2017
8
7012
WARNING : The use of very high voltage increases the risk of sparks.
SAMES KREMLIN
atomizers and high-voltage electrostatic generators are designed to minimize this risk.
Although the HV electrode is the only accessible part, a safety distance of X mm (refer to:
Board) has to be maintained between the parts of the sprayer that are under high voltage and
all the parts that are grounded.
Authorised spraying distance
In addition, a careful check must be made to ensure that any conducting or semi-conducting
part closer than 2.5 m to the atomizer is correctly grounded.
If it is not, electrical charges capable of causing sparks could build up on it. Operating person-
nel must wear anti-static shoes and gloves to avoid this risk.
All metal parts of the booth and parts to be painted must be correctly grounded. Ground resistance must
be less than or equal to 1 M
Ω
(minimum measurement voltage 500 V). This must be checked regularly.
Grounding is mandatory for all the conductive envelops of the electrical equipments and for
all the conductive components within explosive atmospheres by conductive connection with
the ground terminal.
Finally, for the same reasons, the spraying area must have an anti-static floor, such as concrete,
metal duckboard, etc.
It is essential to provide sufficient ventilation in the spraying booths to avoid the build up of
inflammable vapors.
The effectiveness of the overcurrent protection (di/dt) must be checked every day. This check
must be carried out in an area with
no explosive atmosphere
by placing a ground device near
the electrode of the atomizer when the atomizer is switched on (the operator must be con-
nected to ground): the control module must switch to the fault state.
Additional equipment has to be placed outside the dangerous area and its starting device has
to be servo-controlled to the running mode of the booth aspiration fan. The correct working of
the servo-control has to be checked once a week.
A warning board has to be placed in full view close to the sparing area.
An excessive turbine speed can engender major damages on the turbine as well as a loss of
connection bell/turbine; this represents a risk for persons and equipment. The maximum speed
indicated in this user manual must not be exceeded.
Tension
(kV)
Distance
(mm)
0
75
50
60
70
150
80
90
DES03199
200
150
100
50
0
0
50
60
70
80
90
Distance (mm)
Tension (kV)
”X” safety distance depending on the
voltage
Unauthorised spraying zone
