Ransburg RMA Dual Purge Direct A12300 - Manual (Page 38)

RMA-303 Dual Purge/Direct Charge - Installation
33
Where items are mounted directly on structural
components such as building columns, the ground
connection MUST still be made. In many cases
the structural component may be painted or coat-
ed with an insulated material and in all cases the
Ransburg equipment will be painted. These coat-
ings are insulating. The ground connection must
be as perfect as possible. The indicated ground
terminal on the Ransburg equipment will provide
the necessary connection at on 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 con-
nections should be made to the most conductive
metallic structural ground available.
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 accu-
mulation of dried coating material or other residue.
If there is any, remove it!
† Ransburg recommend that ground
connections to earth ground be 3/4-inch
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 connections
should be mechanically sound and have
less than five (5) ohms of resistance be-
tween assemblies and the common point.
The resistance between the central point
and earth ground should be less than five
(5) ohms as well.
NOTE
Safe Grounding is A Matter of
Proper Equipment Maintenance
and Installation, Correct Operation
and Good Housekeeping
Daily inspection of grounding apparatus and con-
ditions, however, will help prevent hazards that
are caused by normal operations.
BE SURE THAT:
1. All objects in the spray area are grounded.
2. Personnel in the spray area are properly ground-
ed. (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 nor-
mal application.
5. That the high voltage is off and applicators are
grounded during maintenance operations.
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.
Ransburg
LN-9263-08.5