Ransburg Aerobell 168 Atex Approved 13350 - Manual (Page 102)

SURVEY OF TESTS TABLE
Kind of Test Requirements
Review & Testing
Interval
• In this context, especially the disconnection threshold,
the overcurrent I
ü
and the minimum voltage U
min
shall
be defined and documented with respect to operational
and local conditions.
• Ventilation must be properly interlocked with high
voltage power supply.
• Forced ventilation must be proved to be working
effectively.
• The disconnection threshold I
ü
shall be defined and
documented with respect to operational and local
conditions.
• It shall be tested if the high voltage is disconnected in
case of inadmissible increase of the operational current
I
b
and if the disconnection threshold I
ü
is reached.
• In this context, the disconnection threshold I
ü
defined
during the initial test shall be checked.
• A disconnection threshold I
ü
giving rise to expect an
occurrence of hazardous discharges or flashover
between parts under high voltage and earthed parts
of the plant in case the safety distance drops below
the permissible limit, is not permitted.
• Validate safety circuits are performing as designed.
• Discharge energy must be less than 300 mJ prior to
reaching the parts.
• Use non-flamable cleaning agents if possible.
• Those used for equipment flushing should have flash
points equal to or higher than those of the coating
material.
• Those solvents used for cleaning must have a flash
point at minimum of 5°C (9°F) greater than the am-
bient temperature. It is the end users responsibility
to insure this condition is met.
TESTS OF THE STATIONARY EQUIPMENT
The tests shall be carried out for each single spraying system. The test shall be carried out by skilled persons
and include the tests according to this table and the internal notes.
APPENDIX A
Protection against ignition of
cleaning agents
Protection against too
high discharge energy
Safe disconnection of high
voltage shall be tested for
voltage-controlled and con-
stant voltage operation
Safe disconnection of high
voltage shall be tested for
voltage-controlled and con-
stant voltage operation
Effectivity of forced
ventilation (exhaust
air systems)
The stationary equipment
for electrostatic coating
with ignitable liquid coating
materials shall be tested for
occupationally safe state
Every 12
months
Continuously
At every
switch on
Monthly
Weekly
Before each
cleaning
Aerobell 168 - Appendix
Ransburg
LN-9247-13 99