Installation
Installation
Installation
System
System
System Requirements
Requirements
Requirements
The use of multiple guns with one isolation
cabinet increases the risk of electric shock, fire,
or explosion. When one gun is charged all guns
are charged. Be sure all guns are in a safe
operating zone when voltage is applied. See
Optional Multiple Gun Installation, page 11
.
The Graco voltage isolation system has the following
features:
• An isolation cabinet 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 are contained within the
cabinet.
• A bleed resistor that drains off the system voltage
when the spray gun is not in use. All metal parts
that contact high voltage fluid are electrically
connected to the bleed resistor.
• A door switch interlock that automatically
discharges the system voltage any time the
isolation cabinet door is open.
Note
The Graco warranty and approvals are
void if a non-Graco electrostatic spray gun
or applicator is connected to the voltage
isolation system or if the gun is operated
above 60 kV.
Display
Display
Display Warning
Warning
Warning Signs
Signs
Signs
Mount warning signs in the spray area where they
can easily be seen and read by all operators. Each
Graco gun, sold separately, includes a warning sign.
Installation
Installation
Installation Location
Location
Location
Position the isolation system as close to the spray
area as feasible to minimize the hose length to the
gun. Minimizing the hose length minimizes the
system charge and discharge time. Position the
supply pump as close as possible for the fastest fill
time. Install in a non-hazardous location.
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.
The figure in
, shows
a typical air-assisted waterborne automatic batch
system. It is not an actual system design.
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 that
reliably collects and removes overspray.
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
High velocity exhaust air can decrease
the operating efficiency of the electrostatic
system.
3A8492A
13
