Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 45)

MMA-303 Direct/Indirect Charge - Installation
LN-9269-11.3 42
N O T E
It is a simple, but vital matter to be sure that all
conductive objects within the spray area are
grounded. All cabinets, housing, bases, sup-
ports, and stands, which are not by design,
insulated from ground, be connected directly
and INDIVIDUALLY to earth ground. Rest-
ing on a concrete floor or being attached to
a building column may not always be suffi-
cient ground.
In order to provide the best ground connection
possible, always attach a ground wire or insu-
lated braided cable t the terminal indicated by
the ground symbol and then to a proven
ground. Always check ground connections for
integrity. Some items, such as rotators and
paint stands, may be supported on an insula-
tor, but all components of the system up to the
insulator MUST be grounded.
Ransburg recommends that ground connec-
tions to earth ground be 3/4” insulated copper
braided wire. Grounds between assemblies
within a machine should be ran to a central
point within the machine using #18 insulated
stranded copper wire minimum. All connec-
tions should be mechanically sound and have
less than 5 ohms of resistance between as-
semblies and the common point. The re-
sistance between the central point and earth
ground should be less than 5 ohms as well.
Where items are mounted directly on structur-
al components such as building columns, the
ground connection MUST still be made. In
many cases the structural component may be
painted or coated with an insulated material
and in all cases, the equipment will provide
the necessary connection at one end, but the
user must be sure that the other end is se-
cured to an earth ground. This may be
achieved by the use of a standard ground
clamp (properly secured), by brazing or by
piercing the structural component enough to
assure connection. All ground connections
should be made to the most conductive metal-
lic structural ground available.
To be sure that everything is properly ground-
ed, the following steps should be undertaken
at least daily:
1. Inspect all ground wires. Look for good,
firm joints at all points of connection. Look
for breaks in the ground wire. Repair all
defects IMMEDIATELY!
2. Inspect the floor or grates for excessive
accumulation of dried coating material or
other residue. If there is any, remove it!
SAFE GROUNDING IS A MATTER OF
PROPER EQUIPMENT MAINTENANCE AND
INSTALLATION, CORRECT OPERATION
AND GOOD HOUSEKEEPING.
Daily inspec-
tion of grounding apparatus and conditions,
however, will help prevent hazards that are
cause by normal operations.
BE SURE THAT:
1. All objects in the spray area are grounded.
2. Personnel in the spray area are properly
grounded. (Conductive safety shoes and
coveralls.)
3. That the target object is properly grounded
(less than 1 megohm resistance).
4. That the high voltage is off except during
normal application.
5. That the high voltage is off and applicators
are grounded during maintenance opera-
tions.