Axi STS 6000 SX-F Parts list manual

5400 Division Dr. | Fort Myers, FL 33905
239 690-9589 | Toll Free 877-425-4239 | FAX [phone]
www.AXI-International.com
STS
STS 6000 SX-F Instruction,
Operating, & Maintenance
Manual
ENCLOSED FUEL MAINTENANCE SYSTEM
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Table of Contents
Table of Contents ................................................................................................................................................................ 2!
General Overview ................................................................................................................................................................ 3!
STS 6000 SX-F Specifications........................................................................................................................................... 3!
System Components ........................................................................................................................................................... 4!
Control and Safety Devices................................................................................................................................................ 4!
Pump/Motor........................................................................................................................................................................ 4!
Primary Filter/Water Separator .......................................................................................................................................... 4!
Fuel Conditioner................................................................................................................................................................. 4!
Fine Filter ........................................................................................................................................................................... 4!
Plumbing ............................................................................................................................................................................ 4!
Manual Additive Injection – If Applicable............................................................................................................................ 4!
System Operation ................................................................................................................................................................ 5!
Pump Operation ................................................................................................................................................................. 5!
Alarms ................................................................................................................................................................................ 5!
Manual Additive Injection – If Applicable............................................................................................................................ 6!
Primary Inspection .............................................................................................................................................................. 7!
Checklist............................................................................................................................................................................. 7!
Installation............................................................................................................................................................................ 8!
Mounting ............................................................................................................................................................................ 8!
Electrical............................................................................................................................................................................. 8!
Field Connections – If Applicable....................................................................................................................................... 8!
Plumbing ............................................................................................................................................................................ 9!
Typical Plumbing Installation (Schematically) .................................................................................................................... 9!
Important Installation Precautions...................................................................................................................................... 9!
Multi-Tank Installation – If Applicable............................................................................................................................... 10!
System Controller .............................................................................................................................................................. 11!
Setting the Current Date and Time .................................................................................................................................. 11!
Programming the Timer ................................................................................................................................................... 11!
Priming the System ........................................................................................................................................................... 12!
Priming Procedure ........................................................................................................................................................... 12!
Commissioning/Initial Start-Up ........................................................................................................................................ 13!
Gauge Venting ................................................................................................................................................................. 13!
Switch Adjustments .......................................................................................................................................................... 13!
Internal Pressure Relief Adjustment................................................................................................................................. 13!
Initial Test Procedures ..................................................................................................................................................... 13!
Maintenance ....................................................................................................................................................................... 15!
Preventative Maintenance................................................................................................................................................ 15!
Servicing the Primary Filter/Water Separator................................................................................................................... 15!
Servicing the Fine Filter ................................................................................................................................................... 16!
Replacement Filter Chart ................................................................................................................................................. 16!
Troubleshooting ................................................................................................................................................................ 17!
Symptom Troubleshooting Guide..................................................................................................................................... 17!
AXI International Limited Warranty.................................................................................................................................. 18!
Warranty Claim Procedure ............................................................................................................................................... 19!
Technical Assistance and Ordering................................................................................................................................. 20!
Accessories and Additional Configuration Parameters .................................................................................................... 20!
Replacement Filter Elements ........................................................................................................................................... 20!
System Identification ........................................................................................................................................................ 20!

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General Overview
STS 6000 SX-F Specifications
Nominal Flow Rate……………………………………………..
2.5 GPM/150 GPH (9.5 LPM/567.8 LPH)
1,200 gallons (4,542 liters) per 8-hour shift
3,600 gallons (13,627 liters) per 24-hour shift
Primary Filter……………………………………………………
10 or 30μParticulate or 60μStainless Steel
Screen with Centrifugal Water Separator
Secondary Filter………………………………………………..
1, 3, 10, or 25μFine Filter or 3, 10μWater Block
Fuel Conditioner………………………………………………..
LG-X 500 Inline Magnetic Conditioner
Plumbing………………………………………………………...
Black Iron
Inlet Port…………………………………………………………
1/2” NPT
Outlet Port…….…………………………………………………
1/2” NPT
System Enclosure……………………………………………..
NEMA 4 Rated Powder Coated or NEMA 4X Rated Stainless
Steel
Operating Temperature……………………………………….
41 - 104°F (5 - 40°C)
Electrical………………………………………………………..
120V/60Hz/15A/1Ph or 230V/50Hz/15A/1Ph*
Pump……………………………………………………………
1/3 HP Spur Gear Pump
Suction Capability (Primed)…………………………………..
15ft. vertical lift or 100ft. horizontal run (lines >1”, primed)
Timer…………………………………………………………....
Incorporated PLC-based timer
Maximum Fluid Viscosity……………………………………..
5 cSt
Outline Dimensions………………………………..…………..
≈30” x 24” x 10” (76 x 61 x 25 cm) (H x W x D)
System Weight…………………………………………………
≈190 lbs (86.2 kgs)
*At 50 Hz., nominal flow rate decreases from 2.5 GPM/150 GPH to 2 GPM/120 GPH.
!WARNING! This system is not meant for use with gasoline or any other flammable liquids having a flash point
less than 100°F (37.8° C). Use with gasoline or any flammable liquids at a temperature exceeding their flash point
presents an immediate explosion and fire hazard.

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System Components
Control and Safety Devices
• System Controller (SFC-50)
o Incorporated PLC-based Timer
o Memory retention during power outages
o Alarm Indicator Light(s)
o Control Circuit Breakers (CB1, CB2)
o Pump Control Selector Switch {Hand (Manual) / Off / Auto}
o System Power Indicator Light
o Pump Running Indicator Light(s)
o Alarm Reset Push Button
o PLC Navigational Control Buttons
o LCD Screen
• Water Detection Alarm Module
• Vacuum & Pressure Switches
• Leak Detection Float Switch
Pump/Motor
• 1/3 HP Gear Pump
Primary Filter/Water Separator
• Fuel Filter
o Standard-issue back-flushable 30-micron hydrophobic Filter Cartridge (other filter elements available)
• Water Separator
• One Pair of Water Detection Sensor Probes
• Drain Valve
Fuel Conditioner
• Inline Magnetic Fuel Conditioner
Fine Filter
• Standard-issue 3μFine Filter Cartridge (other filter elements available)
Plumbing
• Black Iron
Manual Additive Injection – If Applicable
• System Ball Valve
• Additive Injection Port
• Injection Port Ball Valve

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System Operation
To operate the system, apply control power to unit. Place Control Breakers (CB1, CB2) for the System Controller in the
“ON” position.
Pump Operation
Automatic Mode:
Switch the system to “AUTO” mode via the System Controller. During the time intervals set by the user, the Pump will
start and run until the scheduled runtime has ended. – See provided controller manual for instructions on mode selection
and scheduling runtimes.
Manual Mode:
Switch the system to “MANUAL” mode via the System Controller. The Pump Motor will run until the system is switched out
of “MANUAL” mode or an alarm has been tripped. – See provided controller manual for instructions on mode selection.
Alarms
Alarms featured on the system include:
• Leak Detection (system shutdown, alarm indication)
o Activated when the Float Switch in the system’s drip tray detects a raised liquid level. The system will go
into an alarm state and the Pump will not be allowed to run until the alarm is addressed and reset.
Note: Disposal of fuel and associated waste should be done in accordance with Federal, State and Local regulations.
• High Vacuum (system shutdown, alarm indication)
o Activated when the Vacuum Switch, placed on the suction side of the Pump set, detects a reading above
the factory set point. The system will go into an alarm state and the Pump will not be allowed to run until
the alarm is addressed and reset.
• High Pressure (system shutdown, alarm indication)
o Activated when a Pressure Switch, placed on the pressure side of the Pump set, detects a reading above
the factory set point. The system will go into an alarm state and the Pump will not be allowed to run until
the alarm is addressed and reset.
• High Water (system shutdown, alarm indication)
o Activated when water level trips the Water Detection Alarm Module via the Water Detection Sensor
Probes located on the Mechanical Water Separator. The system will go into an alarm state and the Pump
will not be allowed to run until the alarm is addressed and reset.
• Pump Overload (system shutdown, alarm indication) – If Applicable
o Activated when the amperage draw from the Pump Motor Assembly exceeds the factory set point
(determined by the Pump’s FLA) on the Pump Overload Relay Module. The system will go into an alarm
state and the Pump will not be allowed to run until the alarm is addressed and reset.
Note: If the Pump Overload Alarm triggers, please contact AXI International.
Once triggered alarms are addressed, each alarm can be reset via the System Controller. – See provided controller
manual for instructions on alarm resets.
Note: For information on factory set points or timer delays please refer to the “Accessories and Additional Configuration
Parameters” subsection in the “Technical Assistance and Ordering” section.

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Manual Additive Injection – If Applicable
Note: Manual Additive Injection operation may vary depending on the vertical and horizontal distance between the
Additive Holding Container and Fuel Polishing System.
1. With the system running, place flexible hose between the Additive Injection Port and Additive Container.
2. Ensure sufficient additive is present in the Container and that the flexible hose reaches the bottom.
3. Open the Injection Port Ball Valve to begin injecting additive.
4. To start or increase flow of additive into the system, slowly close the system Ball Valve to create a higher vacuum
as indicated on the Vacuum Gauge.
5. Monitor the system’s Vacuum Gauge to avoid creating a vacuum higher than the system’s set point.
Note: If a high vacuum alarm is triggered, return the system’s Ball Valve to the fully open position and reset the alarm by
pushing or selecting “ALARM RESET” on the System Controller.
6. Monitor the additive level in the Holding Container to gauge proper dosing.
7. After injecting the desired amount of additive, close the Injection Port Ball Valve and return the system Ball Valve
to the fully open position.

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Primary Inspection
Upon arrival, the system and accessories must be visually inspected before installation. Improper handling during
shipping may cause physical or electrical problems. Immediately report or note any damages to the shipper.
Checklist
 If the packing crate shows signs of damage inspect the system for damage.
 Check the entire system for damage that could indicate internal mechanical or electrical problems.
 Check Pump/Motor hardware and all plumbing connections for tightness.
 Check all electrical terminals and connections for tightness.

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Installation
Note: It is recommended that only qualified, experienced personnel, familiar with this type of equipment, who have read
and understood all the instructions in this manual should install, operate, and maintain the system.
Mounting
The unit should be permanently wall mounted on a hard, level surface. Use provided mounting holes located on the
enclosure for proper fastening (Refer to mechanical drawing(s) for Mounting Hole Diameter). Ensure the system is level
and secure, enabling water to be more accurately sensed in the Primary Filter’s Sump. Be sure to secure the system in a
location that allows all piping and electrical wiring to be safely routed to the system. This unit is designed for well-
ventilated outdoor or indoor use within the specified temperature range and should be located as close to the tank as
possible.
Electrical
!WARNING!: To avoid the risk of electric shock, make sure that the power supply to the system is disconnected
and ensure that the system is at zero volts, before working on any of the system’s electrical parts.
Make sure that the system’s power requirements and rated voltage/frequency match your electrical system – See
provided wiring diagram. The system may only be connected to properly grounded power sources for operator safety.
Connect all components to the ground studs provided as shown on the provided drawings. After the initial wiring of the
system, check operation to ensure that the motor is running in the correct direction. If the motor is running in the wrong
direction, contact AXI International immediately.
!WARNING!: The whole system (enclosure, plumbing, motor, electric sub panel) must be properly grounded for
operator safety.
Depending on length of run, use wiring according to specification in wiring diagram and connect system to a separate UL
listed breaker (not included) appropriate for branch circuit protection.
Note: Wiring and electrical installation must be in accordance with all applicable federal, state, and local rules, laws,
standards, and regulations.
Field Connections – If Applicable
Remote Monitoring – Dry Contacts:
The System Controller provides one Normally Open (N.O.) Dry Contact for remote alarm monitoring. – See provided
wiring diagram for contact rating, connection, and location.
1. “Summary Alarm” – dry alarm contact for high vacuum, high pressure, no flow, water detection, or leak detection
Remote Monitoring – Modbus TCP/IP Connection:
The System Controller provides an ethernet connection for detailed remote monitoring. – See provide controller manual
for setup instructions.
1. “High Vacuum” – high vacuum alarm was triggered
2. “High Water” – high water alarm was triggered
3. “High Pressure” – high pressure alarm was triggered
4. “No Flow” – no flow alarm was triggered
5. “Leak Detection” – leak detection alarm was triggered
6. “System Mode” – displays the systems current mode {Hand (Manual) / Off / Auto}

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Remote Shutdown – Interlocks:
The customer can provide interlocks connected to the System Controller in order to establish external shutdown
capabilities of the system’s Pump.
Note: The 24 V DC provided by the power supply in the electrical box of the system must be used for remote shutdown
Plumbing
Note: Please ensure to check all of the plumbing (joints, unions, miscellaneous fittings) for tightness prior to completion.
Use proper quality approved fuel line materials with similar inner diameter (ID) to the Inlet/Outlet of the system. For
extended suction side plumbing runs, it is recommended to install oversized pipe, (1/4” to 1/2” increased ID) – See Page 4
– Suction Capability.
Note: Flexible plumbing is strongly recommended for system inlet and outlet connections to external plumbing in order to
avoid issues with thermal expansion, prevent putting any stress on the internal fittings of the system, and enable ease of
maintenance/installation.
The pick-up tube/line(s) should originate from the lowest point of the tank to ensure all water is removed. Also, it should
be connected directly to the system’s Inlet Port (located on the left-hand side of the system) and be kept as short as
possible. It is recommended that an oversized, low restriction Foot Valve be installed to keep the system primed,
especially if the Inlet Port of the system is located above the lowest possible level of fuel in the tank. Additionally, a
Priming Tee should be installed at the highest point of the suction line to enable priming of the pipelines and system.
The return line(s) should be plumbed to the system’s Outlet Port (located on the right-hand side of the system) and enter
the tank as far as possible away from the pick-up tube, close to the tank bottom.
Multiple suction and/or return lines may be connected to a manifold outside the system.
Note: Anti-Siphon or other external plumbing devices may be required by state and/or local regulations & code.
Cumulatively, the system’s suction capabilities are 15 FT. (4.57 m) vertical lift or 100 FT. (30.48 m) horizontal run when
connected to the minimum recommended piping size – See Page 4 – Inlet/Outlet Port, or more, with no additional flow
restrictions. That includes valves, 90-degree connectors, or other plumbing accessories. For continuous optimal
performance, make sure suction and discharge lines are free of contamination, nothing is blocking the flow of fuel, and the
suction line always stays primed.
Note: Plumbing installation must be in accordance with all applicable federal, state, and local rules, laws, standards, and
regulations.
Note: Additionally, if the system must share a fuel oil supply (FOS) line with a generator, we recommend Check Valves be
installed after the split in the line, before the landing/entrance into the generator tank and the Fuel Polishing System. Also,
it is highly recommended that the “External Shut Down” contacts on the PLC are utilized as well in this scenario.
Typical Plumbing Installation (Schematically)
See provided P&ID drawing(s).
Important Installation Precautions
The suction line of the system should be independent and separate from the suction line of the engine. If that is not
possible, appropriate valves must be installed to completely separate the system from the engine’s fuel system to prevent
any possible interference with safe engine operation – See note above.