Axi STS 6000-P35 Parts list manual

STS 6000-P35 INSTRUCTION,
OPERATING, &MAINTENANCE MANUA L
Enclosed Programmable Automated
Fuel Polishing System
1.239.690.9859
AXI.International AXInternational AXIFuel AXIFuel
1.877.425.4239 Toll Free
www.AXI-International.com

INSTALLATION, OPERATING AND MAINTENANCE MANUAL
TABLE OF CONTENTS
OVERVIEW – BASIC SYSTEM COMPONENTS..................................................................................................................4
GENERAL SPECIFICATIONS ..................................................................................................................................................7
SYSTEM COMPONENTS.........................................................................................................................................................7
PRIMARY INSPECTION ...........................................................................................................................................................8
INSTALLATION.......................................................................................................................................................................... 8
Mounting................................................................................................................................................................................................................................................................8
Electrical...................................................................................................................................................................................................................................................................9
Plumbing ................................................................................................................................................................................................................................................................9
Typical plumbing / Above ground tank installation (schematically).............................................................................................................................10
IMPORTANT INSTALLATION PRECAUTIONS ................................................................................................................10
SMART FILTRATION CONTROLLER - ALARM FEATURES ..........................................................................................11
INITIAL START-UP / COMMISSIONING CHECKLIST ....................................................................................................11
Gauge venting / accuracy......................................................................................................................................................................................................................... 11
OPERATION .............................................................................................................................................................................11
Emergency Stop..............................................................................................................................................................................................................................................11
System Operation...........................................................................................................................................................................................................................................12
Programming the Timer.............................................................................................................................................................................................................................12
Fuel Line Leak....................................................................................................................................................................................................................................................13
Stabilizing and Optimizing Fuel Quality...........................................................................................................................................................................................13
MAINTENANCE.......................................................................................................................................................................14
Preventative Maintenance........................................................................................................................................................................................................................14
Servicing primary filter.................................................................................................................................................................................................................................15
Servicing secondary filters ........................................................................................................................................................................................................................16
TROUBLESHOOTING ............................................................................................................................................................17
AUTOMATIC FUEL FILTRATION SYSTEMS WARRANTY ............................................................................................18
TECHNICAL ASSISTANCE AND ORDERING ...................................................................................................................19
Replacement filter elements ...................................................................................................................................................................................................................19
STS 6000 SYSTEM IDENTIFICATION ................................................................................................................................20
APPENDIX A - ABBREVIATIONS USED IN THIS MANUAL..........................................................................................21

STS 6000-P35
Programmable Automated Fuel Maintenance System
STS 6000-P35 Programmable Automated Fuel Filtration System is a self-contained, stand-alone system that removes and
prevents the buildup of water, sludge and contaminants in tanks. It stabilizes diesel and bio-fuels, eliminates microbial
contamination to optimize and maintain fuel quality. STS systems guarantee Optimal Fuel Quality for Reliable Power at All
Times.
For safe operation, the STS 6000-SX-F is equipped with an
automatic pump shut-down and indicators when filter
elements require service. Also included are indicators for
high pump vacuum, high filter pressure, and leaks.
Preventive Maintenance Plans for mission-critical power are
essential. However, most service agreements do not cover
fuel-related engine failures. Fuel has a limited shelf-life and
even “fresh fuel” could contain water, sediment, microbes
and bio-fuel components upon delivery.
Periodic generator tests-runs are too short to determine if
fuel quality is adequate for the demands of continuous,
full-load operation. In fact, generator test runs significantly
accelerate the fuel polymerization and degradation proc-ess
by returning fuel that has been compromised by heat and
pressure back to the tank.
Potential liabilities can easily be avoided by implementing an
AXI Fuel Quality Maintenance Program as part
of every disaster recovery plan. An STS 6000-P35
automatically maintains fuel quality and guarantees reliable
emergency power whenever it is needed.
STS 6000-P35 SPECIFICATIONS
STS 6000-P35 SERIES FEATURE:
Multi-stage water removal and particulate filtration
NEMA 12, 13, 4 Powder Coated or Stainless
UL508A SMART Filtration Controller
Unique Alarm Functions and Remote Monitoring
Integrates with Building Management Systems
Carbon Steel Plumbing
Stand-Alone, Reliable & Turn-Key
1.239.690.9589
AXI.International AXInternational AXIFuel AXIFuel
1.877.425.4239 Toll Free
www.AXI-International.com
Flow Rate 35 GPM
Primary Filter/
Secondary
1, 5, 10, or 25µ Particulate or Water Block
Dual 1, 3, 10 or 25µ
Pump Utilizes Existing Tank Pump
Smart Filtration
Controller
SMART PLC Controller
Ports 1 1/2” NPT In
1 1/2” NPT Out
Construction NEMA rated enclosure
Power 120VAC / 60hz / 20A
Plumbing Carbon Steel
Dimensions 42” x 68 x 14” (H x W x D)
(107 x 176 x 36 cm)
Weight ≈ 404 lbs (183.3 kgs)
(37.8°C).
REV0201P35011217

REPLACEMENT FILTER OPTIONS
Primary Filter
10µ Filter Element
30µ Filter Element
60µ Strainer
01010
01030
01060SS
Part No. Secondary Filter
3µ Water Block Filter
1µ Fine Filter FF-1
3µ Fine Filter FFZ-3
10µ Fine Filter FF-10
10µ Water Block Filter
WB-3
WB-10
Part No.
A unique and powerful broad spectrum concentrate for use
in diesel, gasoline, bio-fuel, kerosene, and HFO. Benefits
include:
Multiple tank functions
AFC-705 Fuel Catalyst
Foot Valve
Digital Flow Meter
STS 6000-P35 OPTIONS AFC 705/710 FUEL ADDITIVE
Tier 4 Compliant (710 only)
Stablized Fuel up to 12 mo.
Added Lubricity
Improved Combustion
Lower Emissions
Improved Fuel Economy
Extended Engine Life
Extended Filter Life
Removes / Prevents
Carbon Build Up
Prevents Corrosion
Cleans Injection System
STS 6000-P35
Programmable Automated Fuel Maintenance System
1.239.690.9589
AXI.International AXInternational AXIFuel AXIFuel
1.877.425.4239 Toll Free
www.AXI-International.com
Fuel Inlet (From Tank)
Solenoid
FBO Primary Filter / Coalescer
Watect 550 Water Sensor
Fuel Conditioner
Secondary Filters
SMART Filtration Controller
Fuel Outlet (To Tank)
Flow Switch
Pressure Transmitters
Float Switch
Pressure Gauges
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
65
7
431
11
9
2
10
8
12
REV0201P35011217

GENERAL SPECIFICATIONS
STS 6000-P35
Flow Rate ................................................................................................ 35 gpm / 2100 gph
16,800 Gallons per 8 hour shift
50,400 Gallons per 24 hours
Outline Dimensions (Enclosure) .............................................. 37” x 60” x 12” (H x W x D)
System Weight .................................................................................... approx. 400 lbs
Operating Temperature ................................................................ 41 to 104° F; 5 to 40° C
Electrical .................................................................................................. 115 V / 60 Hz / single phase (standard)
Solenoid .................................................................................................. 115 V / 60 Hz, NC, Direct Acting
Timer ......................................................................................................... Programmable Digital Timer
Inlet ............................................................................................................ 1-1/2” NPT male port
Outlet ........................................................................................................ 1-1/2” NPT male port
Max. Fluid Viscosity ........................................................................... 5 cSt
Note: The STS 6000 is designed to meet environmental standards for safe operation.
(NOT for use with fluids that have a flash point below 100°F (38°C), e.g.: gasoline,
alcohol, …)
SYSTEM COMPONENTS
CONTROL AND SAFETY DEVICES
•AXI International “Smart Filtration Controller” in electrical sub enclosure – UL 508A listed Industrial
Control Panel
•Programmable Digital Timer –Memory backup to retain program memory during power outages
•System/ Solenoid control switch (Auto-Off-Manual), weatherproof, key operated
•Alarm Reset - weatherproof push button
•Power available indicator
•System/Pump running indicator
•External remote shut-down feature
•Inlet and outlet shut off ball valves
•Emergency stop button
•Leak sensor and alarm indicator (system shutdown)
•Primary filter high differential pressure alarm indicator and system shutdown (pressure
transmitter)
•Primary filter / coalescer high water alarm indicator and system shutdown (water sensor)
•Secondary filter high differential pressure alarm indicator and system shutdown (pressure
transmitter)
•System high discharge pressure alarm indicator and system shutdown (pressure transmitter)
•Paddle type flow switch with “no flow” alarm indicator and system shutdown (flow switch)
PRIMARY FILTER / WATER SEPARATOR
•RACOR FBO fuel filter / coalescer with water sensor probe
•Drain valve on the bottom
•Analog pressure gauge
•Differential pressure indicator

8
•10-micron coalescing filter cartridge (other filter elements available)
FUEL CONDITIONER
•Inline Algae-X Fuel Conditioner eliminates and prevents microbial contamination and the
formation of sediments that naturally occur in diesel fuel.
SECONDARY FILTER
•Two 3 Micron water blocking spin on filter (other filter elements available)
•Pressure gauge (stainless steel, liquid filled)
WEATHERPROOF DOUBLE DOOR WALL-MOUNTED ENCLOSURE WITH
LOCKABLE HANDLES / LATCHES
•14-gauge steel construction with continuously welded seams
•Concealed hinges
•Finished in polyester powder coat inside and out over phosphatized surfaces
•Spill tray with leak detection
•Louvered side panels
•Brackets for wall mounting
•Literature pocket
CARBON STEEL PLUMBING
PRIMARY INSPECTION
Upon arrival, the STS 6000-P35 Automatic Fuel Filtration 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 (also concealed ones) to the shipper.
CHECKLIST:
oIf the packing crate shows signs of damage inspect the STS-6000 cabinet for damage. Check the
entire outside of the cabinet for damage that could indicate internal mechanical or electrical
problems.
oCheck locking handles, door and hinge operation.
oCheck pump/motor hardware and all plumbing connections for tightness.
oCheck all electrical terminals and connections for tightness.
INSTALLATION
! IMPORTANT ! 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 STS-6000 is a totally enclosed system and should be permanently wall mounted on a hard, level
surface. Use provided mounting feet for proper fastening. This weatherproof unit is designed for well-
ventilated indoor or outdoor use within specified temperature range and should be located as close
to the tank as possible.

Please allow about 1 ft of space between the side louvers of the enclosure and nearby objects. This space
is necessary to ensure sufficient ventilation of cooling air for the system and motor.
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 systems power requirements and rated voltage / frequency match your electrical
system (See wiring diagram). The STS 6000 may only be connected to properly grounded power sources
for operator safety. Connect all components to the ground studs provided as shown on the electrical
drawings.
! WARNING ! The whole system (Enclosure, doors, plumbing, motor, electric sub panel)
must be properly grounded for operator safety.
Depending on length of run, use copper 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.
Remote Pump Shut-Down Feature:
If required, connect the “external pump shut down input terminal” (see wiring diagram) and follow the
specifications provided in the electrical wiring diagram to disable pump (e.g.: remote shut down, remote
pump control, …). Please note that the contact needs to be supplied with +24V DC from the power
supply of the STS 6000 AXI International Smart Filtration Controller.
Remote Monitoring - Dry Contacts:
The STS provides two NO (normally open) dry contacts for remote alarm monitoring. Please see wiring
diagram for contact rating, connection and location.
“Summary Alarm” – dry alarm contact for high pressure, no flow or water detection (as well as Emergency
stop and overload relay triggered)
“Leak Detection” – dry alarm contact for leak detection
Pump/System Running Remote Monitoring Feature:
Two NO dry contacts are provided for remote “Pump Running” monitoring. Please see wiring diagram for
contact rating, connection and location.
PLUMBING
Use proper quality approved fuel line materials with at least 1-1/2” inner diameter on the supply side
from the tank and at least 1-1/2” inner diameter on the return / discharge side back to the tank.
Note: Do not put any stress on plumbing of STS 6000 and use a backing wrench when
connecting the external plumbing.
The return line(s) should be plumbed to the “PUMP OUTLET – RETURN TO TANK” port (on the left side of
the system) and enter the tank as far as possible from the pick up tube close to the tank bottom. A
`

(swing) check valve may be required on the return line(s) on some installations to prevent back flow
pressure.
Multiple suction and/or return lines may be connected to a manifold outside the STS-6000 (see options
list). Anti-Siphon or other external plumbing devices may be required – please check local regulations /
code.
Note: Plumbing and Installation must be in accordance with all applicable Federal, State and
Local rules, laws, standards and regulations.
TYPICAL PLUMBING / ABOVE GROUND TANK INSTALLATION (SCHEMATICALLY)
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 STS-6000
from the engine fuel system to prevent any possible interference with safe engine operation.
It is highly recommended to plumb the discharge line independent and separate of the engine’s fuel
return line back to the tank. If the return line from the engine and the discharge of the STS 6000 have to
be combined in any way, adequate valves should be installed to prevent any possible interference with
safe engine operation.
Note: If any of the STS 6000 system’s fuel lines are used in combination with the engine’s fuel
system, the STS 6000 should be disabled during engine operation (use the provided
“remote pump shut down” feature as shown in the electrical drawing and described
above).

SMART FILTRATION CONTROLLER - ALARM FEATURES
The STS 6000 is equipped with an AXI International Smart Filtration Controller. System and alarm status
are displayed on the industrial control panel (on the door) via indicator lights and on the text display
directly on the controller.
If all red indicator alarm lights are illuminated please see the text display for further info. One of the two
situations will be present:
Emergency stop button depressed (Unlock E-Stop button by turning and push “ALARM RESET” button to
return to normal operation.
Overload relay (OLR) tripped. Remove front panel of Smart Filtration Controller and push reset button on
OLR relay, close panel again and push “ALARM RESET” button on door panel to return to resume
operation.
Note: All red indicator lights on the control panel illuminated at the same time indicates that
either the Emergency stop button has been pressed or that the overload relay has been
tripped.
INITIAL START-UP /COMMISSIONING CHECKLIST
GAUGE VENTING / ACCURACY
After shipment, pointer of gauges may not rest at zero due to internal case pressure buildup caused
by temperature variations. Accuracy may be significantly reduced. To restore gauge to
operating condition, move yellow lever of fill plug to the ”open” position or remove small plug
from top of gauge and leave open.
OPERATION
! WARNING ! Do not use with gasoline. This System is not meant for use with gasoline
nor with other flammable liquids having a flash point less than 100°F. Use with gasoline
or use with any flammable liquids at a temperature exceeding their flash point,
presents an immediate explosion and fire hazard.
! WARNING ! Never use the STS 6000 at a temperature exceeding the flash point of its
contents.
EMERGENCY STOP
Note: In case of an emergency the Solenoid can be closed and system disabled by depressing
the red “EMERGENCY STOP” button on the control panel.
To release the “EMERGENCY STOP” button located on the control panel turn the red knob in the direction
indicated by the arrows on the mushroom button and push the “ALARM RESET” button to acknowledge.
`

SYSTEM OPERATION
Apply control power to unit. Place breakers in the AXI International Smart Filtration Controller in the “ON”
position.
Automatic:
Place the key switch in the “AUTO” position. When the timer contacts close, the solenoid will open until
the timer setting has expired.
Manual (Override):
Place the key switch in the “RUN” position. The solenoid will open until the switch is returned to the “OFF”
or “AUTO” mode positions or till an alarm or overload has been tripped.
PROGRAMMING THE TIMER
The programmable timer is part of the Micro PLC settings of the AXI International Smart Filtration
Controller located inside the STS 6000 system.
Note: The PLC uses military time – all times programmed must be in that format.
1. Please make sure the Emergency Stop button is not engaged, the key switch set to “OFF” and
push the “ALARM RESET” button on the control panel.
2. When power is first applied to the system the display of the PLC will show (blinking) date and time.
3. We will now set current date and time (must be in military format):
4. Hit the “ESC” button
5. Select ‘Stop’ and press “OK”
6. Select ‘Yes’ (use down arrow key) and press “OK”
7. Select ‘Setup’ (use down arrow key)and press “OK”
8. Select ‘Clock’ and press “OK”
9. Select ‘Set Clock’ and press “OK”
10. Using the arrow keys set current day of the week, time and date as indicated in the display and
press “OK”
( or to change value, or to change between week day, time and date).
11. When finished entering press “OK” to confirm
12. Press “ESC”
13. Select ‘Start’ and press “OK” – correct time and date should be displayed
14. We are now ready to program the timer (military time format must be used):
15. Hit the “ESC” button
16. Select ‘Set Param’ (use down arrow key) and press “OK”
17. Push down arrow key till ‘Timer 1’ is displayed
18. Press “OK”
19. Use left and right arrow keys to select the day/days of the week the system should
automatically turn on and the up or down arrow key to activate the selected day.
20. Use arrow keys in same manner to program the ‘On’ time – when the system will switch on (on
the selected day/days)
21. Use arrow keys in same manner to program the ‘Off’ time – when the system will switch off (on
the selected day/days)
22. Press “OK” to confirm entry when finished
23. If required you can set up to 3 Timers by using the up and down arrow key

24. Press “ESC” twice to return back to the time and date display
Please call AXI International with any questions.
FUEL LINE LEAK
If fuel is detected in the spill / drip tray, the float switch will activate the fuel leak alarm illuminating the
“LEAK DETECTION” indicator. The solenoid will close and the system will remain locked out of operation
until the leak has been corrected and the “ALARM RESET” button has been pushed.
Before removing the spilled fuel from the basin, turn the key switch to the “OFF” position.
Always make sure to find the cause of the leakage and correct it. After removing the spilled fuel, allowing
the leak switch to return to its normal position, the key switch can be returned to the “AUTO” or “RUN”
mode.
Note: Disposal of fuel and associated waste should be done in accordance with Federal, State
and Local regulations.
STABILIZING AND OPTIMIZING FUEL QUALITY
We recommend treating the fuel with the AXI INTERNATIONAL Fuel Catalyst (AFC-705). This will
enhance and accelerate the tank cleaning process by breaking down and dissolving existing tank sludge.
AFC-705 will decontaminate compartments of the tank that are out of reach of the suction line.
Depending on the condition of the fuel and the amount of sludge build-up, it is recommended to initially
use a double dose of one to twenty-five hundred (1:2500) instead of one to five thousand (1:5000) This
has proven to be essential in accelerating the tank cleaning process. AFC-705 contains detergent,
surfactant, dispersant, corrosion inhibitor, lubricity enhancer and combustion catalyst. It does not contain
biocides. AFC-705 should always be used periodically in particular to stabilize fuel that is stored for longer
periods of time.
Note: In cases of severe tank contaminant build-up (sludge) and high water level in bottom, it
is recommended to clean the tank (vacuum bottom) and polish the fuel before initial
use of an STS system.

MAINTENANCE
! IMPORTANT ! It is recommended that only qualified, experienced personnel, familiar
with this equipment, who have read and understood all the instructions in this manual
should install, operate and maintain the system.
! IMPORTANT ! Always disconnect the system from the electric power supply before
working or servicing it. Do not proceed with any maintenance unless the pressure or
vacuum has been released, the system has been allowed to reach ambient temperature
and all fluids have been drained.
PREVENTATIVE MAINTENANCE
The STS-6000 Automatic Fuel Filtration System should be visually inspected and tested a minimum of
every six months according to the procedure below during light duty cycles. Monthly inspections are
recommended for systems that are being used in excess of an average of 8 hours day and five days a week.
oPrior to performing the maintenance procedure ensure that:
oThe electrical sub-panel mounted main disconnect switch is operating properly,
othe user supplied remote circuit breaker is in the “Off” position, and
othat all sources of power are isolated from the unit.
oProceed only after this has been verified and properly tagged.
oDrain visible water and sediment from primary filter / coalescer (see Servicing Primary Filter /
coalescer below).
oCheck enclosure and all parts for corrosion and rust.
oCheck locking latches, door and hinge operation.
oCheck cabinet mounting hardware. Tighten as necessary.
oCheck pump/motor hardware for tightness. Pump/motor hardware will loosen after normal
operation due to vibration. This hardware is lock nutted, check all bolts for secure nuts.
oCheck all electrical terminals and connections for tightness.
oCheck all plumbing joints for leaks. Tighten fittings and joints as necessary. Remove
accumulated fuel in drip tray as necessary.
oInspect all filters and separators. See section below on filter inspection and service.
Note: If any of the above described alarm test procedures fail or if any alarm trip value
deviates immediately contact AXI International.
Note: All filter elements should be replaced at least every six months.
`

SERVICING PRIMARY FILTER
Set the telltale gauge pressure indicator (red pointer) to slightly above the black needle prior to
operation. The gauge will indicate maximum vacuum pressure during system operation.
Clogging filter elements restrict the flow of fuel and the system’s pressure gauge will indicate a pressure
drop. The gauge and differential pressure indicator are mounted on top of the primary filter head. At a
pressure drop of 25 PSI (red dial area of the gauge) the solenoid will automatically close and activate the
“HIGH PRESSURE ALARM” indicator light. The signal indicates that it is time to change the filter elements.
SERVICING AND BACK-FLUSHING PRIMARY FILTER:
1. Turn key switch to the “OFF” position – make sure pump will not turn on
2. Close the inlet and outlet ball valve
3. Place a fuel waste container below the drain valve on the bottom of the filter
4. Open the drain valve
5. Allow all fluid to drain from the filter
6. Open the vent valve on the cover of the housing ; allow the unit to thoroughly vent before
opening the cover
7. Loosen the 4 knobs attaching the head to the housing flange
8. Remove the head gasket and discard
9. Remove and discard the expended cartridge in a FIRE-SAFE place. In accordance with local and
national regulations.
10. Flush the interior of the housing with clean, processed, filtered product or a suitable solvent. A
nonmetallic bristle brush will help to remove caked-on debris. Rinse the housing and unit cover
with a clean solvent and dry with soft, lint-free wiping cloths.
11. Lightly lubricate new head gasket with Vaseline or Petroleum Jelly and position it on the head. If
Vaseline is not available lubricate the gasket with the fuel or oil it will be used in.
12. Insert a new cartridge into the housing. Position housing (with cartridge) underneath filter head.
Push/twist cartridge onto head spigot. The head “conical spring” will seat/seal the cartridge in the
housing.
13. “Rotate” housing onto the collar bolts, hand tighten knobs until head is “snug” to housing.
NOTE: A torque wrench is recommended. Tighten all collar bolts to 100 in lbs.
14. Close the drain valve on the bottom of the housing.
15. SLOWLY open the inlet and outlet valves; allow the unit to fill completely.
16. Leave the vent valve on top of the unit open; to allow entrapped air to escape while filling.
17. When a small amount of fluid flows from the vent, close it tightly.
18. During the initial filling and after the above maintenance, and while unit is in operation, examine
housing and all connections for leaks. Including head/flange junction.
19. Push the “ALARM RESET” button on the control panel to acknowledge the alarm and reset it
20. Return the pump selector key switch to “AUTO” or “RUN”
21. Check for leaks when re-starting and pressurizing the system. Your system is now ready to resume
normal operation

SERVICING COALESCER
If the water level in the primary filter/water coalescer reaches a certain level in the bowl, the water
sensor will trigger the alarm “HIGH WATER ALARM” and close the solenoid. The signal indicates that it
is time to drain the bowl on the secondary filter.
SERVICING SECONDARY FILTERS
Clogging filter elements and saturation of the water block filters restrict the flow of fuel and the system’s
pressure gauge will indicate a pressure drop.
The gauge and differential pressure indicator are mounted on top of the secondary filter head. At a
pressure drop of 25 PSI (red dial area of the gauge) the solenoid will close and activate the “HIGH
PRESSURE ALARM” indicator light. The signal indicates that it is time to change the filter elements.
There are several types of AXI International spin on fine filters available; we recommend using the WB-3 (3
micron water block fine filter). The AXI International Water Block incorporates polymer technology to
remove emulsified water from fuel.
CHANGING THE SECONDARY FILTERS:
Note: Both secondary spin on filters need to be replaced at the same time. Always use two of
same type filter elements – never mix two different kinds or micron ratings.
1. Turn key switch to the “OFF” position – make sure pump will not turn on
2. Close the inlet and outlet ball valve
3. Place an appropriate container underneath the filters
4. Remove both old spin on filters with the provided filter wrench by turning the cartridge counter
clock wise seen from the bottom of the cartridge
5. Apply a film of lubricating oil to the gasket of the new filters. Screw the new filter canisters to the
filter head until the gasket is tight and secure (an additional ½to one turn after the filter makes
contact with the gasket)
6. Open the inlet and outlet ball valve
7. Push the “ALARM RESET” button on the control panel to acknowledge the alarm and reset it
8. Return the pump selector key switch to “AUTO” or “RUN”
9. Check for leaks when re-starting and pressurizing the system
Your system is now ready to resume normal operation
Note: Disposal of fuel, associated waste and filters should be done in accordance with Federal,
State and Local regulations.
! WARNING ! Some fuels may have been treated with biocides. Biocides are extremely
toxic and may enter the body through the skin. It is recommended to use adequate
protection and proper precautions if fuel contains biocide type products.
`

TROUBLESHOOTING
No fuel delivery
1. Pump does not run
2. Pump is not primed
3. Fuel supply line blocked
4. Excessive lift
5. Air leak in fuel supply to pump
6. Pump rotation direction incorrect
7. Intake or outlet valve closed
8. Check valve installed backwards
Insufficient fuel delivered
1. Air leak at inlet
2. Defective pressure relief valve or check valve
3. Excessive lift
4. Pump worn
5. Inoperative foot valve
6. Piping improperly installed or dimensioned
7. Primary filter/water separator plugged
Rapid pump wear
1. Pipe strain on pump causing bind
2. Worn pump/motor coupler
3. Pump has been run dry or with insufficient fuel
4. Plumbing on inlet side not appropriately dimensioned
Alarm “HIGH PRESSURE ALARM” comes on with clean or new filter elements installed
1. Heavily contaminated fuel / excessive water in tank
2. Restriction in plumbing on discharge side too high
3. Head (lift) on discharge side too high
4. Check valve stuck or defective
5. Outlet ball valve not fully open
6. Discharge line clogged
Pump requires too much power
1. Air in plumbing lines
2. Liquid too viscous
3. Bent pump shaft, binding rotor

AXI INTERNATIONAL WARRANTY - LIMITED WARRANTY
AXI International makes every effort to assure that its products meet high quality and durability standards and expressly warrants the products described herein
against defects in material and workmanship for a period of one (1) year from the date of purchase. This warranty is not intended to supplant normal inspection,
care and service of the products covered by the user, and shall not obligate AXI International to provide free service during the warranty period to correct breakage,
maladjustment, or other difculties arising out of abuse, misuse, or improper care and maintenance of such products. Our express warranty is subject to the following
terms and conditions:
This warranty shall only extend to and is only for the benet of original purchaser(s), or end customer(s) who use the products covered hereby and subject to the terms
and conditions herein. This warranty is not an on-site warranty. Travel requests will be at the discretion of AXI International. Defective systems and ancillary products
will require a return authorization number and shipping to AXI International’s factory in Fort Myers, FL. Any warranty claim received by AXI International after one (1)
year from the date of purchase will not be honored even if it is claimed that the defect occurred prior to one (1) year from the date of purchase. Claims outside of this
one (1) year period, and for claims not listed within, payment, repair, or service will be awarded at the sole and exclusive discretion of AXI International.
This Warranty shall NOT apply to the following:
1. Damage or deterioration caused by normal wear and tear.
2. Failures caused by any external cause or act of God, such as accident, collision, theft, vandalism, riots, wars, re, freezing, lightning, earth-quakes, windstorms,
hail, volcanic eruptions, oods, tornados or hurricanes.
3. Failures due to alterations, adjustments, unauthorized changes to the product(s), neglect or improper storage, repair and/or maintenance.
4. Failures due to abuse or application of the product(s) for uses other than for which it/they are designed or intended by AXI International, including but not limited to,
improper installation or location in a harsh, corrosive or saltwater environment.
5. Failures resulting from attachments, accessory items, and parts not sold by AXI International.
6. Repairs by any party other than those authorized by AXI International.
7. Failures resulting from user’s delay in making the product available for inspection by AXI International after notifying AXI International of a potential product problem.
8. Cosmetic damage, discoloration, rusting, corrosion or scratches from applied paint.
9. Replacement of consumables such as, but not limited to, fuses, lamps, lters, etc.
10. Additional expenses for repair after normal business hours, i.e., overtime or holiday labor rates.
11. Expenses for rental of equipment during downtime and/or performance of warranty repairs.
12. Expenses related to investigating performance complaints and/or troubleshooting where no manufacturing defect is found.
In addition to the limitations above, this warranty shall not apply to products (1) which have been tampered with, altered or repaired by anyone other than AXI
International without the express prior written consent of AXI International (2) which have been installed improperly or subject to misuse, abuse, accident, negligence
of others, improper operation or maintenance, neglect or modication, or (3) which have had the serial number altered, defaced or removed.
The liability of AXI International under this warranty is limited to the repair or replacement of the defective product. AXI International assumes NO LIABILITY for labor
charges or other costs incurred by any purchaser incidental to the service, adjustment, repair, return, removal or replacement of products. AXI INTERNATIONAL
ASSUMES NO LIABILITY FOR ANY GENERAL , SPECIAL, INCIDENTAL, CONSEQUENTIAL, CONTINGENT OR OTHER DAMAGES UNDER ANY WARRANTY,
EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE, WITH THE RESPECT TO THE PRODUCTS
COVERED BY THIS WARRANTY POLICY, EXCEPT AS EXPRESSLY PROVIDED FOR HEREIN. AXI INTERNATIONAL ASSUMES NO LIABILITY FOR ANY
GENERAL, SPECIAL, INCIDENTAL, CONSEQUENTIAL, CONTINGENT OR OTHER DAMAGES EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF
AXI INTERNATIONAL’S NEGLIGENCE. NO EMPLOYEE, AGENT, REPRESENTATIVE OR DISTRIBUTOR IS AUTHORIZED TO MAKE ANY WARRANTY ON
BEHALF OF AXI INTERNATIONAL OTHER THAN THE EXPRESS WARRANTY PROVIDED FOR HEREIN.

AXI International reserves the right at any time to make changes in the design, material, function and specications of its products. Any such changes shall not obligate
AXI International to make similar changes in such products that were previously manufactured.
To the fullest extent permitted by law, any claims against AXI International are limited to the remedies as expressly set forth in this warranty and any other further
claims, such as but not limited to, compensation for any damage incurred other than to the AXI International product, are hereby excluded.
Warranty Claim Procedure
To make a claim under this warranty, please call AXI International at [phone] or 1-877-425-4239, and provide: Name and location where unit was purchased,
the date and receipt of purchase, model number, serial number, and a detailed explanation of the problem you are experiencing. The Customer Service Representative
may, at the discretion of AXI International, arrange for a Field Engineer to inspect your system. If the inspection reveals a defect covered by its limited warranty, AXI
International will either repair or replace the defective parts or products. AXI International assumes no liability, if upon inspection, AXI International or its representative
determines that there is no defect or that the damage to the system resulted from causes not within the scope of this limited warranty and customer shall be
responsible standard rates incurred by AXI International, as established from time to time by AXI International.
For service and sales, please contact AXI International:
AXI International
5400 Division Drive
Fort Myers, FL 33905
Tel: [phone]
Toll Free: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.axi-international.com

TECHNICAL ASSISTANCE AND ORDERING
Please write to, fax, email or call:
AXI International
5400 Division Drive
Fort Myers, FL 33905
Tel: [phone]
Fax: [phone]
Email: [email protected]
Internet: www.axi-international.com
Please provide the following information:
Serial Number of your STS 6000, the required part numbers and quantity.
The drawings / parts list included in this manual are the most accurate source of part numbers for your
STS 6000.
REPLACEMENT FILTER ELEMENTS
Primary Filter:
FBO-60339 Micro filter element - 1 Micron
FBO-60340 Micro filter element - 5 Micron
FBO-60357 Micro filter element - 10 Micron
FBO-60341 Micro filter element - 25 Micron
Secondary Filter:
WB-3 3 Micron Water Block spin on filter cartridge
WB-10 10 Micron Water Block spin on filter cartridge
Also available:
•Larger or smaller capacity, custom designed systems for higher or lower flow rates
•Two Tank Control
•Digital Flow Meter
•Foot Valves
•Rotor Sight Glass
STS 6000 SYSTEM IDENTIFICATION
(e.g. B 070010 – P35)Serial Number:__________________________________________
System Specification:
Voltage:
o120 V AC / 60 Hz
Primary Filter Element:
o1 Micron
o5 Micron
Secondary Filter Element:
o3 Micron Water Block
o230 V AC / 50 Hz
o10 Micron
o25 Micron
o10 Micron Water Block
Inspected by: ______________________________ Date: ________________

APPENDIX A - ABBREVIATIONS USED IN THIS MANUAL
Abbreviations of terms used with STS 6000 Automatic Fuel Filtration Systems. When following a drawing
utilize this guide to define abbreviated system and component names. This is a master list. The drawings
and text pertaining to your equipment may not contain all these terms.
AC Alternating Current
AHR Alarm Horn Relay
AH Alarm Horn
BPRV Back Pressure Regulating Valve
BRK Motor/Pump Bracket
BV Ball Valve
C Contactor
CB Circuit Breaker
CSR Check Strainer Relay
CV Check Valve
DC Direct Current
DPDT Double Pole Double Throw
F Fuse
FLWS Flow switch
FS Float switch
GA Gauge
GAL Gallons
GPM Gallons Per Minute
HFL High Fuel Level Relay
HG Mercury
HP Horsepower
HZ Hertz
I.D. Inside Diameter
JB Junction Box
“ HG Inches of Mercury
L Lamp
L.E.D. Light Emitting Diode
LFF Loss of Flow Relay
LFL Low Fuel Level Relay
LPR Low Pressure Relay
MDB Main Distribution Block
MDS Main Disconnect Switch
MOT Motor
N.C. Normally Closed
NEC National Electric Code
NEMA National Electric Manufacturers Assoc.
N.O. Normally Open
NP Nameplate
NPT National Pipe Thread
O.D. Outside Diameter
OLR Over Load Relay
OPT Option
PCB Printed Circuit Board
PCRX Pump Control Relays
PG Pressure Gauge
PLR Pipe Leak Relay
PRV Pressure Relief Valve
PRS Pressure Switch
PS Power Supply
PSI Pounds Per Square Inch
PSR Pressure Switch Relay
PRR Pump Running Relay
SC Swing Check Valve
SOL Solenoid
TB Terminal Block
T Control Transformer
TDR Time Delay Relay
TEFC Totally Enclosed, Fan Cooled
THR Tank Heater Control Relay
TS Transducer Pressure Switch
V Voltage
VAC Voltage, Alternating Current
VDC Voltage, Direct Current
VG Vacuum Gauge

AXI.International AXInternational AXIFuel AXIFuel
1.239.690.9 589
1.877.425.4239 Toll Free
www.AXI-International.com
AXI International’s innovative fuel solutions restore, maintain, and improve the quality and stability of diesel fuel
wherever it is used or stored. AXI’s product range includes automated enclosed fuel maintenance systems, mobile
fuel polishing systems, compact fuel maintenance systems, fully integrated day tank systems, fuel transfer systems,
fuel conditioners, Tier 4 compliant fuel catalyst, fuel sampling, and fuel testing.
AXI also designs, engineers, and manufactures custom built fuel system solutions – working side by side with its
fuel optimization and maintenance systems.
Mission Critical Fuel Storage Marine Government
Mining Agriculture Power Gen Railway
Military
On-Road