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N2 System

Required equipment for N2 System

Required N2 generator, flowmeter, soldering station with N2 soldering iron.

NoteOne unit of HAKKO FX-780 and HAKKO FX-791 is required for one soldering iron.

Space-saving set sample
Combination of Hakko FX-951 and FX-780 : 163(W) x 280 (H) x 110(D)mm

N2 generator HAKKO FX-780 and FX-781

The details such as features, performance, maintenance information and service life are as follows.

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Features

Compressed air from compressor is separated by polymer membrane when it passes through the Hakko FX-780/FX-781. N2 gas goes to the Hakko FX-791 via tube, and other air constituents are discharged outside.

  • HAKKO FX-780: Small-capacity type
  • HAKKO FX-781: Large-capacity type, accepts 2 irons

What is the mechanism of N2 separation?

It utilizes the different permeability of each air constituent. N2 has lower permeability than oxygen or carbon dioxide.

Performance

HAKKO FX-780

Air Supply Pressure
(MPa)
 N2 concentration
(％) 		99.90 99.50 99.00 98.00 97.00 96.00 95.00 90.00
0.3 Amount of Generation 0.15 0.37 0.48 0.66 0.88 1.10 1.30 2.60
0.4 Amount of Generation 0.24 0.57 0.77 1.10 1.40 1.70 2.00 4.40
0.5 Amount of Generation 0.35 0.75 1.10 1.50 1.90 2.20 2.90 5.90
0.6 Amount of Generation 0.48 0.97 1.30 1.80 2.40 3.10 3.50 7.50
0.7 Amount of Generation 0.55 1.20 1.60 2.20 3.10 3.70 4.20 9.20

Generated nitrogen l/min. at 25°C

HAKKO FX-781

Air Supply Pressure
(MPa)		 Air Supply Pressure
(％)		 99.90 99.50 99.00 98.00 97.00 96.00 95.00 90.00
0.3 Amount of Generation 0.28 0.55 0.84 1.10 1.40 1.70 2.10 4.80
0.4 Amount of Generation 0.49 0.90 1.30 1.80 2.30 2.80 3.40 7.80
0.5 Amount of Generation 0.70 1.20 1.80 2.40 3.20 4.00 4.80 10.90
0.6 Amount of Generation 0.92 1.70 2.30 3.20 4.20 4.90 6.10 13.80
0.7 Amount of Generation 1.10 2.10 2.80 4.00 5.10 6.30 7.60 17.10

Generated nitrogen l/min. at 25°C

Usage note

Connection

Connect the tube of compressor to the valve “AIR IN”. If connecting to the valve “N2 OUT”, N2 separation performance may decrease and nitrogen gas is not discharged from HAKKO FX-791.
*The picture on the right shows the connection sample of small-capacity type HAKKO FX-780.

Required compressed air

Supply compressed air 0.3 to 0.7MPa to HAKKO FX-780 or FX-781. 0.5MPa is recommended.

NoteIf compressed air 0.2MPa or less is supplied, the performance may decrease and if 0.8MPa or more, HAKKO FX-780/FX-781 may be damaged.

In order to supply compressed air of 0.3 to 0.7MPa, followings are required.

  • Compressor: 0.3MPa or more air pressure and 10L/min or more flow rate.
  • Regulator: Adjustable between 0.3 and 0.7MPa

Maintenance and Life

Perform periodical maintenance of compressor, air dryer, air filter and water filter to keep HAKKO FX-780/FX-781 in good condition.
Check and clean compressor, air dryer, air fiilter and water filter periodically in accordance with the manufacture’s recommendations.

  • Take a special notice of filter to be replaced periodically. If not, flow rate of nitrogen gas may decrease.
  • HAKKO FX-780/FX-781 may be damaged due to intrusion of water, dust, etc.

The life time of HAKKO FX-780/FX-781 is approx. 5 years under the condition of the 8-hours a day / 240 days a year operation, by the use in good condition with periodical maintenance.

NoteWhen the HAKKO FX-780 or HAKKO FX-781 end of life, the high polymer membrane needs to be replaced. As it costs as the same price as purchasing a new one, we would recommend purchasing instead of replacing.

Flowmeter HAKKO FX-791

The details such as features, performance, and maintenance information are as follows.

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Features

HAKKO FX-791
Gas flow rate adjustment in 0.25L/min increments makes it easy to select the appropriate gas flow rate.

Usage note

Turn the gas flow control knob to change flow rate.
Use the gas discharge valve to open or close N2 gas.

Maintenance

Operate the flowmeter in accordance with the usage note above.

NoteIf Gas Flow Control Knob is used to open/close the N2 gas, the unit may be broken.

How to set up N2 System with soldering stations and N2 soldering irons

It is possible to set up N2 System using your HAKKO soldering station. You can find out N2 soldering iron for your station.

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Reference chart for combination of soldering stations and N2 irons

It is possible to set up N2 System using your HAKKO soldering station.
You can have N2 System purchasing a compatible N2 iron and other equipment for the HAKKO station you own.

Required equipment for one soldering iron
N2 generator： HAKKO FX-780 ; Small-capacity type (1 pc) or
HAKKO FX-781 ; Large-capacity type (1 pc)
N2 Flowmeter： HAKKO FX-791 (1 pc)
Other equipments： Regulator, Water filter, Air filter, Air dryer, Compressor

Required equipment for two soldering irons
N2 generator： HAKKO FX-781; Large-capacityi type (1 pc)
N2 Flowmeter： HAKKO FX-791 (2 pcs)
Other equipment： Regulator, Water filter, Air filter, Air dryer, Compressor

In case higher concentrate and larger flowrate of N2 gas are required such as for auto-soldering, 2 units of FX-781 large-capacity type do the job for 1 soldering iron.

Soldering station Soldering tip/Nozzle assembly N2 soldering iron
Single iron
FX-971


Double irons※
FX-972 		Soldering tip T39 series
Soldering tip T39 series		 FX-9702
No. FX9702-81
No. FX9702-811
FX-9702 *Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-971


Double irons※
FX-972 		Soldering tip T50 series
Soldering tip T50 series		 FX-9704
No. FX9704-81
No. FX9704-811
FX-9704 *Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Double irons※
FX-972 		Soldering tip T53 series
Soldering tip T53 series		 FX-9708
No. FX9708-81
No. FX9708-811
FX-9708 *Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-888DX
FX-888D
FX-888(Discontinued)
FR-701

Double irons※
FX-889
FR-702 		Soldering tip T18 series
こて先 T18シリーズ		 FX-8802
No.FX8802-01 (For North America FX8802-02)
FX-8802*Included standard tip (T18-B) and the applicable nozzle assembly A (B3662).
Other tip shapes are available as optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-838 		Soldering tip T20 series
こて先 T20シリーズ		 FX-8302
No.FX8302-01
FX-8302*Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FN-1010
 Soldering tip T36 series
こて先 T14シリーズ		 FN-1102
No.FN1102-81
FN-1102*Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-805
 Soldering tip T37 series
Soldering tip T36 series 		FX-8005
No.FX8005-81
No.FX8005-82
FN-1102*Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-801(Discontinued) 		Soldering tip T33 series: Regular Type
こて先 T33シリーズ
T33 series: Slim Type
こて先 T33シリーズスリムタイプ		 FX-8003
No.FX8003-81
FX-8003*Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assemblyNozzle assembly
Single iron
FX-950
FX-951
FM-204
FM-205

Double irons※
FX-952
FM-203

Triple irons※
FM-206
 Soldering tip
T13 series for Asia, Oceania and others
T17 series for North America and Europe
こて先 T13シリーズ		 FM-2026
No.FM2026-03
No.FM2026-04 (for Asia, Oceania and others)
No.FM2026-06 (for North America and Europe) FM-2026 *Tip and nozzle assembly are optional parts.

 In case FX-950 is used with sleep function,please purchase FM2026-04 or FM2026-06 which are supplied with iron holder.
Nozzle assembly
Nozzle assembly
Triple irons※
FM-206 		Soldering tip T22 series
こて先 T22シリーズ		 FM-2031
No.FM2031-01
No.FM2031-02 (for North America and Europe)
No.FM2031-04 (for Asia, Oceania and others)
FM2031-03 *Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
FX-951

Double irons※
FM-203

Triple irons※
FM-206
 Soldering tip T30 series
こて先 T14シリーズ		 FM-2032
No.FM2032-51
No.FM2032-52
FM2032 *Tip and nozzle assembly are optional parts.
Nozzle assembly
N2アダプター組品 ノズルD
Hose assembly
ホース組品
Single iron
HAKKO 938 (Discontinued)
 Soldering tip T14 series (Discontinued)
こて先 T14シリーズ		 HAKKO 957 (Discontinued)
No.957-01
HAKKO 957*Tip and nozzle assembly are optional parts.
Nozzle assembly
Nozzle assembly
Single iron
HAKKO 936 (Discontinued)
HAKKO 937 (Discontinued)
HAKKO 701 (Discontinued)

Double irons※
HAKKO 928 (Discontinued)
 Soldering tip T4 series
こて先 T4シリーズ		 HAKKO 953 (Discontinued)
No.953-01
HAKKO 953*Included standard tip (T4-B) and the applicable nozzle assembly A (B2670).
Nozzle assembly
Nozzle assembly
  • ※Two N2 soldering irons are available at the same time. One HAKKO FX-780 and one HAKKO FX-791 are required for each.

In case of newly purchasing HAKKO soldering station

HAKKO soldering station comes with a normal soldering iron. So, N2 iron should be purchased separately.

Other equipment to be prepared for your information

Generica names and required specifications are as follows.

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The following equipment is not available from HAKKO product lineup.

Required equipment Specifications Usage
Compressor 0.3MPa or more air pressure and 10L/min or more flow rate Compressing air
Air dryer Drying water in compressor, which is generated when compressing air.
Air filter*
(*Filter names varies depending on manufacturers.)		 0.3μｍ Removing dust
Water filter*
(*Filter names varies depending on manufacturers)		 0.01µm Removing water and oil
Regulator 0.3 to 0.7MPa adjustable (0.5MPa is recommended to use with HAKKO's N2 generator & flowmeter) Adjusting compressed air
Air joint OD φ0.6mm Connecting regulator to air tube
Air tube OD φ0.6mm Supplying air from regulator to flowmeter

NoteN2 System requires all the equipments above.

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