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HydrX
Fuel Conditioner
TM
Solenoid Valve Service Guide
Introduction
This Document is provided to aid in the replacement and service of the HydrX Fuel Conditioner Inlet and Outlet Solenoid
Valves.
The HydrX Fuel Conditioning System utilizes Inlet and Outlet solenoid valves to control flow. Each valve is shown in Figure 1.
HydrX Inlet Valve Service Kit
P/N: 330020-882 (120V)
Both Valves are located on the HydrX Fuel Conditioner Manifold shown in Figure 2.
The Inlet Valve is mounted to the left side of the HydrX manifold using four hex socket screws and can be identified by its
square body.
The Outlet Valve connects directly to the right side of the HydrX Manifold. It can be identified by its round, knurled body.
Be sure to order the proper valve service kit, with coils matched to the voltage available in your region. (see cross-reference
table at the end of this document).
Contractor Certification Requirements
Veeder-Root requires the following minimum training certifications for contractors who will install and program the equipment
discussed in this manual:
Service Technician Certification (Previously known as Level 2/3): Contractors holding valid Technician Certifications are
approved to perform installation checkout, startup, programming and operations training, system tests, troubleshooting and
servicing for all Veeder-Root Series Tank Monitoring Systems, including Line Leak Detection. This certification includes TLS-3xx
and TLS-4xx certification training.
All service personal on site must comply with all recommended safety practices identified by OSHA and your employer.
Review and comply with all the safety warnings in the manuals listed in this document above and any other Federal, State or
Local requirements.
Warranty Registrations may only be submitted by selected Distributors.
Figure 1. HydrX Inlet/Outlet Valve Solenoids
Inlet Valve/
Solenoid
Figure 2. HydrX Fuel Conditioner Manifold
HydrX Outlet Valve Service Kit
P/N:330020-883 (120V)
HydrX Fuel
Conditioner
Manifold
Outlet Valve/
Solenoid
1
Manual No: 577014-510
Revision: A
l
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Table of Contents
Related Manuals for Veeder-Root HydrX 330020-882
Summary of Contents for Veeder-Root HydrX 330020-882
- Page 1 Contractor Certification Requirements Veeder-Root requires the following minimum training certifications for contractors who will install and program the equipment discussed in this manual: Service Technician Certification (Previously known as Level 2/3): Contractors holding valid Technician Certifications are approved to perform installation checkout, startup, programming and operations training, system tests, troubleshooting and servicing for all Veeder-Root Series Tank Monitoring Systems, including Line Leak Detection.
-
Page 2: Safety Warnings And Precautions
National Electrical Codes 70 and 30A; federal, state, and local codes; and other applicable safety codes. 3. Substitution of components may impair intrinsic safety. 4. Do not modify or use service parts other than those provided by Veeder-Root. Reference Documents: Manual 577014-466, 577014-492 Suggested Equipment: Valve Service Kit (part numbers listed at the end of this document), approved 5-gallon container to receive diesel fuel;... - Page 3 HydrX Quick Help - ATG Control Procedure to Prepare for Service Procedure to Prepare for Service Troubleshooting Guide Tag, lockout power to the HydrX switched neutral. 1. Close the STP Adapter ball valve to isolate the Fuel Conditioner unit from the pump. If coils are to be replaced, disconnect field wiring from coil leads and tag for re-connection.
- Page 4 HydrX Quick Help - ATG Control Procedure to Prepare for Service 5. Remove the conduit body and electrical coils from both solenoid valve stems and set them aside (see Figure 5). Troubleshooting Guide Before Removal After Removal Figure 5. Solenoid Valves/Conduit Removed INLET SOLENOID VALVE REMOVAL PROCEDURE 1.
- Page 5 HydrX Quick Help - ATG Control Procedure to Prepare for Service 3. Clean and inspect all valve components (see Figure 8). If all parts are in good condition the Inlet Valve may be re- Troubleshooting Guide assembled for replacement. In the event the valve is damaged, or components have been lost, the valve assembly must be replaced.
- Page 6 HydrX Quick Help - ATG Control Procedure to Prepare for Service manifold before tightening the screws in a crossing pattern (1 to 2 and 3 to 4 - see Figure 10). Torque the four screws to Troubleshooting Guide 18 - 24 lb-in. Orient the Inlet Valve assembly so the diaphragm bleed hole is oriented in the...
- Page 7 HydrX Quick Help - ATG Control Procedure to Prepare for Service 3. Grasp the knurled section of the valve body using slip-joint pliers or a small pipe wrench and using a large adjustable Troubleshooting Guide wrench on the non-knurled part of the valve body, rotate counterclockwise to separate the two for access to the Outlet Valve plunger, spring, and seat.
- Page 8 HydrX Quick Help - ATG Control Enabling the HydrX System OUTLET VALVE INSTALLATION PROCESS Troubleshooting Guide 1. Apply a small amount of petroleum grease to both o-rings located in the exterior of the valve. Thread the Outlet Valve into the HydrX Manifold until hand tight (see Figure 16). Figure 16.
- Page 9 HydrX Quick Help - ATG Control Enabling the HydrX System Troubleshooting Guide Outlet filter (4” diameter) STP Adapter ball valve Inlet filter (6” diameter) Figure 19. HydrX Sump 3. Touch Menu>Diagnostics>HydrX>Overview (Item 1, Figure 20) to open the HydrX Diagnostic Overview screen (see Figure 21).
-
Page 10: System Inspection
HydrX Quick Help - ATG Control Valve Troubleshooting 4. Touch the Actions button (Item 2, Figure 21) to open the HydrX diagnostic service buttons menu. Note: Gray Action Troubleshooting Guide buttons are disabled. Figure 22. HydrX Diagnostic Service Menu 5. Touch Fill (Item 3, Figure 22) to refill the HydrX filter housing with fuel from the tank. SYSTEM INSPECTION During the HydrX Fill Cycle, inspect the areas where the valves meet the manifold for signs of leakage. -
Page 11: Troubleshooting Guide
Inlet Valve Service – UL/cUL 240V/50Hz Replacement 330020-919 kit- Outlet Valve Service – UL/cUL 240V/50Hz Replacement For additional assistance, please contact Veeder-Root Technical Support by phone at 800-323-1799 or by email to technical- support@veeder.com. ©Veeder-Root 2025. All rights reserved Ver.: A.6, 02/25/2025...
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