Ransburg MMA-570 Direct_Ind Charge Atomizer A13366 - Manual (Page 32)

It is simple, but vital matter to be sure that all con-
ductive objects within the spray area are grounded.
All cabinets, housing, bases, supports, and stands,
which are not by design, insulated from ground,
be connected directly and INDIVIDUALLY to
earth ground. Resting on a concrete floor or
being attached to a building column may not
always be sufficient ground.
In order to provide the best ground connection
possible, always attach a ground wire or insulated
braided cable 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 insulator, but all components of
the system up to the insulator MUST be grounded.
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 secured 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 metallic structural
ground available.
NOTE
† Ransburg recommends that ground
connections to earth ground be 3/4” in-
sulated 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 connections
should be mechanically sound and have
less than 5 ohms of resistance between
assemblies and the common point. The
resistance between the central point and
earth ground should be less than 5 ohms
as well.
To be sure that everything is properly grounded,
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 INSTAL-
LATION, CORRECT OPERATION AND GOOD
HOUSEKEEPING. Daily inspection of grounding
apparatus and conditions, however, will help pre-
vent 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.
6. The spray area is kept free of accumulated
coating deposits.
7. All combustible liquids in the spray area
(outside of automatic delivery systems) are
kept to minimum and are kept in fire safe,
grounded containers. (See NFPA-30 and
chapter 6 of NFPA-33.)
8. Proper ventilation is provided.
9. Personnel must thoroughly understand the
equipment, its operation and maintenance,
and all safety precautions.
MMA-570 Direct/Indirect Charge - Installation
Ransburg
LN-9279-13 29