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Instructions
Fluid Defender
Level Sensor
For monitoring lubrication fluid tank levels in above ground, stationary tanks. Not for use
with tanks containing gasoline or any other Class I NFPA 30 flammable fluids. Not for use
with tanks without required overfill containment protection, not a replacement for overfill
containment protection. For professional use only.
Not approved for use in explosive atmospheres or hazardous (classified) locations.
Models:
25V475
- Sensor, Single, High Level, 3 ft
25V476
- Sensor, Single, Low Level, 10 ft
25V577
- Sensor, Single, Low Level, 30 ft
25V478
- Sensor, Dual Level, 10 ft
25V479
- Sensor, Dual Level, 30 ft
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
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Table of Contents
Summary of Contents for Graco Fluid Defender 25V475
- Page 1 Instructions ™ Fluid Defender Level Sensor 3A7279B For monitoring lubrication fluid tank levels in above ground, stationary tanks. Not for use with tanks containing gasoline or any other Class I NFPA 30 flammable fluids. Not for use with tanks without required overfill containment protection, not a replacement for overfill containment protection.
- Page 2 Warnings 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.
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Page 3: Typical Installation
. 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. - Page 4 Typical Installation Fresh Oil Low Level 3A7279B...
- Page 5 Typical Installation Remote Bulk Fill Stop 3A7279B...
- Page 6 Overview Overview Fluid Level Sensors The fluid level sensors detect the tank fluid level and signals the Fluid Defender to activate the alarm and deactivate the air control solenoid valve (if configured on the specific channel). Control level sensor: A level sensor connected as a control level sensor to the Fluid Defender that controls the output of an air control solenoid valve.
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Page 7: Installation
Installation Installation Installation of Level Sensors NOTE: Failure to properly tighten the cord grip may cause the level sensor to move from the fixed position. NOTE: Install level sensors in stationary tanks. The sensors are not designed to monitor mobile tanks. 5. -
Page 8: Operation
Operation Operation High Level Sensors When the tank level is not at full, the float is in the down position, normal condition, the contact is closed: no alarm (F . 5, illustration a). As the tank level rises and reaches the level sensor, the float moves to the up position and opens the contacts . -
Page 9: Maintenance
Maintenance Maintenance Periodic Testing 4. Manually test all of the accessories to verify they are functioning properly. Weekly (and before every remote bulk fill) 5. Confirm that all wires are properly connected to the 1. Press and hold the RESET button to test the siren, Fluid Defender and accessories. - Page 10 Part No. 25V592 Ref. Description Float Retaining clip Splash guard O-ring 3A7279B...
- Page 11 Dimensions Dimensions 3A7279B...
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Page 12: Technical Specifications
Technical Specifications Technical Specifications Fluid Defender Level Sensor Metric Type Single/Dual Point Magnetic Level Sensor/Reed Switch High Level Normally closed - open on the rise Low Level Normally closed - open on the fall Mounting Configuration Vertical static applications (not designed for mobile applications) Mounting 2 npt 2 npt... -
Page 13: California Proposition
California Proposition 65 California Proposition 65 CALIFORNIA RESIDENTS WARNING: Cancer and reproductive harm – www.P65warnings.ca.gov. 3A7279B... -
Page 14: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.