Tuthill NEXTEC FILL-RITE NX25-DDC Series Installation And Operation Manual Download Page 3

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INSTALLATION AND OPERATION MANUAL

Unique Features of the nextec Pump 

Your nextec fuel transfer pump will perform differently from non-intelligent pumps on start-up and while operating. You will want to keep the following in mind as you begin 

to use and learn how your nextec Intelligence™ pump operates.

• 

On initial start up, the pump may rev momentarily, but will slow down, as if idling, as it reponds to the load it senses. This is a normal condition, and it will continue 

at this low speed until you squeeze the handle on the dispensing nozzle to begin fluid flow.

• 

When you squeeze the nozzle handle to begin flow, the microprocessor in the pump will sense the change, and will raise the RPM’s to meet the load.

It is not uncommon for the pump to change RPM’s during operation. It will do this as it senses performance parameters are changing; for example, if you increase or 

decrease the flow at the nozzle, the electronics controlling the motor will sense the changes and adjust the motor speed to optimize performance.

• 

If the pump senses a condition that is outside normal operating parameters (low battery voltage, for example), it will sound a series of tones to alert you to the 

condition, and to help you diagnose it. See the “Intelligent Tones” section of the Troubleshooting Guide on page 14 for greater detail on this feature.

• 

Your NX25-DDC pump has a Continuous Duty Cycle, meaning it does not have to be shut off to “rest” after a specific period of use. This allows you to move from 

fueling one piece of equipment to another without having to shut the pump off. The nextec Intelligence does, however, have an automatic shut off if the pump is left 

running in bypass mode (without dispensing any fluid) for 20 minutes. This features protects from excessive battery drain, as well as excessive uneccessary wear 

to the pump in the event you forget to shut the pump off. Should the pump turn itself off under these conditions, simply cycle the power switch off, then back on to 

restore pump operation.

• 

The nextec Intelligence will also shut the motor down if:

 

Pump temperature exceeds threshold parameters

 

Supply voltage is outside threshold parameters

 

Rotor is locked

About This Manual 

From initial concept and design through its final production, your Fill-Rite pump is built to give you years of trouble-free use. To ensure it provides that service, and to avoid 

injury or death, it is critical that you read this entire manual prior to attempting to install or operate your new pump. Become familiar with the terms and diagrams, and pay 

close attention to the highlighted areas with the following labels: 

CAUTION!

 Failure to observe a “Caution” may cause damage to the 

equipment. 

At Tuthill, your satisfaction with our products is paramount to us. If you have questions or need assistance with your product, please contact us at 1-800-634-2695      

(M-F 8 AM–6 PM ET). 

Safety Information 

 

DANGER!

 Electrical wiring should be performed with extreme caution and in compliance with local, state, and national electrical code NEC/ANSI/NFPA 70, NFPA 30, 

and NFPA 30A, as appropriate for the intended use of the pump. Threaded rigid conduit, sealed fittings, and conductor seal should be used where applicable. The 
pump must be properly grounded. If installing in deviation of this manual, a licensed electrician must perform the installation. Improper installation or use of this 
product will result in serious bodily injury or death!  

DANGER! 

To ensure safe and proper operation of your equipment, it is critical to read and adhere to all of the following safety warnings and precautions. Failure to 

follow instructions below, improper installation, or use of this product, will cause serious bodily injury or death!

• 

NEVER

 smoke near the pump, or use the pump near open flames when pumping a flammable liquid! Fire can result!

•  This product shall not be used to transfer fluids into any type of aircraft. 

DANGER! 

To minimize static electricity build up and possible explosion, use only static wire conductive hose when pumping flammable fluids, and keep the fill nozzle 

in contact with the container being filled during the filling process. Spark / static discharge will cause explosions. 

WARNING!

 Threaded pipe joints and connections should be sealed with the appropriate sealant or sealant tape to minimize the possibility of leaks. Leaking fuel may cause the 

potential for fire and explosion.

CAUTION!

 The pump motor is equipped with electronic protection from thermal overload; if overheated, the motor will shut off. After the motor has cooled, you may cycle power 

or the switch to reset this safety feature and continue use. The pump will not restart until properly cooled.

WARNING!

 Emphasizes an area in which personal injury or even death 

may

 result from 

failure to follow instructions properly. Mechanical damage may also occur.  

IMPORTANT! 

These boxes contain information that illustrates 

a point that may save time, or be key to proper operation, or clarifies a step.

DANGER!

 

Emphasizes an area in which personal injury or even death 

will

 result from 

failure to follow instructions properly. Mechanical damage may also occur.

Summary of Contents for NEXTEC FILL-RITE NX25-DDC Series

Page 1: ...MADE IN USA NX25 DDC SERIES DC FUEL TRANSFER PUMPS Installation and Operation Manual This manual contains English language only Visit www fillrite com to download more languages...

Page 2: ...goods subject to misuse neglect accident improper installation or maintenance or have been repaired by anyone other than the Manufacturer or its authorized representative THE FOREGOING WARRANTIES ARE...

Page 3: ...r to attempting to install or operate your new pump Become familiar with the terms and diagrams and pay close attention to the highlighted areas with the following labels CAUTION Failure to observe a...

Page 4: ...mediately with a petroleum product gasoline diesel light oil etc to eradicate residual water IMPORTANT A Fill Rite filter should be used on the pump outlet to ensure no foreign material is transferred...

Page 5: ...lt Note that the bolt is inserted through the hole closest to the nozzle opening and the boot is then positioned so the peg on the pump mounting surface inserts in the top second hole of the boot This...

Page 6: ...on device a k a vacuum breaker is important because it will break a liquid siphon if there is an open nozzle or a leaking hose below the fluid level in the tank when the pump is turned off Fill Rite r...

Page 7: ...he cable into the pump to prevent unexpected starting of the motor Unexpected motor start can cause unintended discharge of fuel creating an explosion and fire hazard Note that the switch does not int...

Page 8: ...the power cable from the pump while pump is switched on or connected to a power source ALWAYS switch the pump off and disconnect all the clamps from the power source PRIOR to disconnecting the power c...

Page 9: ...illrite com tuthill com INSTALLATION AND OPERATION MANUAL NX25 DDC Dimensional Information Bung Mount Dimensional Information Foot Mount Dimensional Information All measurements are in inches millimet...

Page 10: ...PP Mount 2 Bung NPT or BSPT Materials of construction pump housing Cast Iron Materials of construction wetted material BUNA N Fluorocarbon Rotor materials of construction Powdered Iron Rotor vane mate...

Page 11: ...refully align the slot in the top of the bypass valve retainer with the locking tab on top of the bypass valve Figure 4 2 Push the bypass valve retainer down over the locking tab on the bypass valve P...

Page 12: ...zzle boot kit KIT321SK External seal kit KIT321JC Junction box cover kit KIT321SW Switch kit KIT321ASN Anti siphon kit Servicing Rotor Vanes and Shaft Seals The rotor vanes and shaft seals are inside...

Page 13: ...fillrite com tuthill com INSTALLATION AND OPERATION MANUAL NX25 DDC Exploded View Bung Mount Configuration Foot Mount Configuration KIT321NB KIT321BG KIT321SW KIT320SL KIT321RG KIT321SW KIT320SL KIT32...

Page 14: ...inlet plumbing Reduce vertical or horizontal distance from pump to liquid 6 Bypass valve stuck Open valve remove debris Low capacity 1 Excessive dirt in screen Remove and clean screen 2 Suction line...

Page 15: ...and require the pump to be returned to the manufacturer 3 Tone Faults Application Installation faults 4 Tone Faults Hardware faults Tones Condition Cure Hardware fault auto shut off Troubleshoot as d...

Page 16: ...ty of Machinery Basic concepts general principles for design Directive 2004 108 EC Electromagnetic compatibility Directive 2011 65 EU Restrictions of the use of certain hazardous substances in electri...

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