Graco 25V482 User manual

3A7280A
EN
Instructions
Air Control Solenoid Valve
for Fluid Defender™
For regulating air powered equipment connected to the Fluid Defender. For professional
use only.
Not approved for use in explosive atmospheres or hazardous (classified) locations.
Models:
25V482 - Kit, Solenoid, Air, Pump
145 psi (1.0 MPa, 10 bar) Maximum Working Pressure
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Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
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Warnings
2 3A7280A
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
WARNING
FIRE AND EXPLOSION HAZARD
When flammable fluids are present in the work area, such as gasoline and windshield wiper fluid, be
aware that flammable fumes can ignite or explode. To help prevent fire and explosion:
• Use equipment only in well-ventilated area.
• Eliminate all ignition sources, such as cigarettes and portable electric lamps.
• Ground all equipment in the work area.
• Keep work area free of debris, including rags and spilled or open containers of solvent and gasoline.
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
• Use only grounded hoses.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and
create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.

Typical Installation
3A7280A 3
Typical Installation
There are multiple system configurations possible. The typical installations shown in FIG. 1 - FIG. 3 are the three
targeted applications for the Fluid Defender. Each typical installation shown is configurable as a single separate
channel. Follow all local codes and regulations for tank installations. Consult your local Graco representative or
distributor for system design assistance.
Waste Oil High Level Shut Off
FIG. 1

Typical Installation
4 3A7280A
Fresh Oil Low Level
FIG. 2

Typical Installation
3A7280A 5
Remote Bulk Fill Stop
FIG. 3

Overview
6 3A7280A
Overview
Air Control Solenoid Valves
Air control solenoid valves are a Fluid Defender system
component used to control air operated pumps and air
actuated control valves. These devices are used to stop
fluid flow into the monitored tank. They are an optional
system component, but required for fluid flow
interruption.
The air control solenoid valves are continuously
powered during normal operation with the air control
solenoid valve being open to provide air pressure to the
controlled equipment.
When the Fluid Defender detects an alarm condition in
the same channel as the air control solenoid valve, the
solenoid is deactivated causing the connected
equipment to deactivate.
The Fluid Defender must be powered for the air control
solenoid valve to be open, allowing for normal
controlled equipment operation. Loss of power to the
Fluid Defender closes the air control solenoid valve and
bleeds downstream air pressure from the controlled
equipment.

Installation
3A7280A 7
Installation
Pressure Relief Procedure
f
1. Turn off the bleed-type master air valve located
upstream of all connected equipment.
2. Turn the Fluid Defender keyed power control off to
de-energize the connected air control solenoid
valves.
3. Follow the pressure relief procedure for all
connected equipment, such as pumps and
dispense valves from your component instruction
manuals.
Installation of Air Control
Solenoid Valves
1. Mount the air control solenoid valve, using the two
mounting holes, to a sturdy mounting surface.
NOTE: Mounting inline with hard plumbing is
acceptable.
2. Connect Port 1 to the air supply (FIG. 4).
3. Connect Port 2 to the downstream controlled
equipment. (FIG. 4).
Install the user supplied connected equipment
downstream of the air control solenoid valve
following manufacturer requirements.
4. Install the muffler into Port 3. Port 3 is an exhaust
port. Do not plug the port because when the air
control solenoid valve deactivates under alarm
conditions, the downstream air pressure vents
through Port 3 (FIG. 4).
COMPONENT RUPTURE HAZARD
The air actuated control valve, and all of the fill piping
and connections between the air actuated control
valve and the fluid delivery pump, must be designed
for use with pumped delivery, and be able to handle
the maximum pressure produced when the pump
continues to operate after the air actuated control
valve closes.
The maximum working pressure of the components
in the fill piping may vary. Over pressurization of any
component may cause them to rupture, resulting in
property damage and serious injury, such as skin
injection, or injury from splashing fluid.
To reduce the risk of injury and property damage
from component rupture:
• Be sure to know the maximum working pressure
of each component in the system
• Never exceed the maximum working pressure of
any component in the system
• Only connect fluid delivery pumps which are able
to be operated with a closed outlet
• Only connect fluid delivery pumps with a
maximum outlet pressure lower than the
maximum rated pressure of the system
The equipment connected to the air control solenoid
valves may stay pressurized until pressure is
relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid, and moving parts, follow the Pressure Relief
Procedure for the connected equipment when you
stop dispensing and before cleaning, checking, or
servicing the equipment.
FIG. 4

Installation
8 3A7280A
5. Attach all accessory wires to the Fluid Defender
control box following all local codes and
regulations.
Reference the Technical Specifications, page 13,
for information on maximum wire runs.
All accessory circuits are low voltage (less than 48
VDC).

Operation
3A7280A 9
Operation
Air control solenoid valves are operated automatically
by the Fluid Defender on a channel specific basis. The
air control solenoid valve is energized when the Fluid
Defender is in active monitoring mode. When the Fluid
Defender senses an alarm condition in a specific
channel, the air control solenoid is de-energized and
closes the air supply to the connected equipment.
Air Control Solenoid Valve Manual Override
Only use manual override for system setup, or when
instructed by Graco for troubleshooting. Always set the
mode of operation back to the normal operating
position.
NOTE:
Ensure that all air control solenoid valves are not in
the override mode. Air control solenoid valves in
override mode are unable to control downstream
equipment.
Develop on-site tank fill procedures to prevent
accidental overfills.
Test the alarms before any remote bulk fill is
performed.
Determine and verify that there is sufficient volume
available in the tank before transfer. Verify capacity
before filling any tank.
Test the complete installed system to verify correct
installation.
Follow maintenance requirements and perform
periodic system maintenance.
The blue manual override switch turns on the air to the
downstream connected equipment and allows the
equipment to function for troubleshooting and testing
purposes only.
To set the blue manual override switch:
1. Insert a small, flat screwdriver into the slot of the
blue manual override switch screw (FIG. 5).
2. Rotate the blue manual override switch screw
clockwise 1/4 turn.
3. After performing system testing or troubleshooting,
reset the blue manual override switch screw to the
normal operation position. Insert a small, flat
screwdriver in the slotted opening and turn the blue
manual override switch screw counterclockwise
back to the original position (FIG. 6).
NOTICE
Do not turn the blue manual override switch screw
more than a 1/4 turn. Overturning the screw could
cause it to break, rendering the unit inoperable.
FIG. 5: Override Position
FIG. 6: Normal Operation Position

Recycling and Disposal
10 3A7280A
Recycling and Disposal
End of Product Life
At the end of a product’s useful life, recycle it in a
responsible manner.
Troubleshooting
Follow the pressure relief instructions in your pump
manual, before checking or repairing the system.
See Fluid Defender manual, Related Manuals, page 1
for Troubleshooting information.