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Disable Controller Interlocks
If interlock requirements have been satisfied in
your system by means other than the Electrostatic
Controller, the controller interlocks can be disabled.
NOTICE
To avoid damaging the circuit boards when
servicing the control box, wear Part No.
112190 grounding strap on your wrist. Ground
appropriately each time
1. To disable the system interlock, connect wire 3
on the controller input power cord to line voltage.
The
icon will be lit on the display screen.
2. Remove power from the controller.
3. Remove 4 screws and take off the access cover.
4. Locate the interlock switches on the main board.
Move the switches to the ON position, which
means the interlocks are considered satisfied.
Switch 1 is the 24 VDC Interlock (pin 19 on
the Discrete I/O cable). Switch 2 is the SAFE
POSITION Interlock (Pin 18 on the Discrete I/O
cable).
Symbols in A9 and A10 (see
Screen Areas, page
screen will show that these signals are satisfied.
3A3657C
38) on the display
Interlock switches are shown in the OFF position.
Installation Options
Installing and servicing this equipment requires
access to parts which may cause fire, explosion,
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.
• Be sure your installation complies with national,
state, and local codes for the installation of
electrical apparatus in a Class I, Division 1, or a
Group II, Zone 1 Hazardous Location.
• Comply with all applicable local, state, and
national fire, electrical, and other safety
regulations.
Installation details vary widely depending on the
system requirements. This section shows three
typical installations. They are not actual system
designs. For assistance in designing a system to suit
your particular needs, contact your Graco distributor.
Installation
9
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