Installation
Installation
Installation
System
System
System Requirements
Requirements
Requirements
The use of multiple guns with one isolation cabinet
may cause electric shock, fire, or explosion. To
help prevent injury or equipment damage, use only
one gun per isolation cabinet.
A Graco voltage isolation system must have the
following features:
• An isolation enclosure that prevents persons from
making contact with the high voltage components
before the system voltage is discharged. All
components of the isolation system that are
charged to high voltage must be contained within
the enclosure.
• A bleed resistor to drain off the system voltage
when the spray gun is not in use. A metal part of
the fluid supply unit must be electrically connected
to the bleed resistor.
• A safety interlock that automatically discharges the
system voltage when anyone opens the isolation
enclosure.
NOTICE
NOTICE
NOTICE
The system should not have any severe arcing
occurring when the isolation mechanism opens
and closes. Severe arcing will shorten the life of
the system components.
NOTE:
NOTE:
NOTE: The Graco warranty and approvals are
void if the electrostatic spray gun is connected to a
non-Graco voltage isolation system or if the gun is
operated above 60 kV.
Warning
Warning
Warning Sign
Sign
Sign
Mount warning signs in the spray area where they
can easily be seen and read by all operators. An
English Warning Sign is provided with the gun.
Install
Install
Install the
the
the System
System
System
Installing and servicing this equipment requires
access to parts which may cause electric shock
or other serious injury if work is not performed
properly.
• Do not install or service this equipment unless
you are trained and qualified.
• Comply with all local codes and regulations
Fig. 19 shows a typical electrostatic air spray system.
It is not an actual system design. For assistance
in designing a system to suit your particular needs,
contact your Graco distributor.
Ventilate
Ventilate
Ventilate the
the
the Spray
Spray
Spray Booth
Booth
Booth
Do not operate the gun unless ventilating air flow is
above the minimum required value. Provide fresh
air ventilation to avoid the buildup of flammable or
toxic vapors when spraying, flushing, or cleaning
the gun. Interlock the gun air and fluid supply
to prevent operation unless ventilating air flow is
above the minimum required value.
The spray booth must have a ventilation system.
Electrically interlock the gun air and fluid supply with
the ventilators to prevent gun operation any time that
the ventilation air flow falls below minimum values.
Check and follow all local codes and regulations
regarding air exhaust velocity requirements. Verify
the operation of the interlock at least once a year.
NOTE: The minimum allowable air exhaust velocity
is 60 feet/minute (19 linear meters/minute). High
velocity air exhaust will decrease the operating
efficiency of the electrostatic system.
3A2496H
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