Hakko Electronics 474 User manual

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Table of Contents (English)
1. Packing List ......................................................... 1
2. Specifications ...................................................... 1
3. Precautions ......................................................... 2
4. Part Names (Desoldering Gun/Station) ............ 3
5. Operation (Preparation-
Assembly and Connection) .... 4 • 5
(Desoldering) ........................... 5 • 6
(Cleaning during Operation) ......... 7
(Problems during Desoldering) . 7• 8
(Post-operation Maintenance) ...... 8
(Troubleshooting Guide) ............... 8
6. Maintenance (Desoldering Gun) ................. 9 • 10
(Station) .......................................11
7. Replacement Parts
(Replacing Heating Element) ..... 12
8. Parts List (Station) ............................... 13 • 14
(Desoldering Gun) ...................... 15
9. Replacement Parts ............................................ 15
10. Wiring ................................................................ 16
●
Thank you for purchasing the HAKKO 474 Desolder-
ing Tool.
Please read this manual before operating the HAKKO
474.
Keep this manual readily accessible for reference.
●
CAUTION
Remove the pump securing screw (M4×25
marked red) from the bottom of the station.
Failure to do so may result in serious prob-
lems.
吸錫槍
Instruction Manual
使用說明書
日本白光牌
目錄 ( 中文 )
1. 包裝清單 ......................................................................... 17
2. 規格 .................................................................................. 17
3. 安全及使用上的注意事項 ........................................... 18
4. 部件名稱 （吸錫槍／控制臺） ..................................... 19
（準備 --- 裝配和連接） .......................20．21
（吸錫） ..................................................21．22
（使用時 , 進行清理工作） ......................... 23
（ 除錫時發生故障 ） .......................................23
（使用後的保養） ......................................... 24
（排除故障指南） ......................................... 24
6. 保養 （吸錫槍） ..............................................25．26
（控制臺） ...................................................... 27
7. 更換部件 ......................................................................... 28
8. 部件清單 （控制臺） ..............................................29．30
（吸錫槍） ...................................................... 31
10. 電路圖 ............................................................................. 16
●
承蒙惠顧 , 謹致謝忱。
使用 HAKKO 474 之前 , 請詳閱本使用說明書 , 正
確使用。
閱後請妥為收存 , 以備日後查閱。
●
注意
使用之前必須除去機身底下的泵拴緊螺絲
（Ｍ４×25 紅色記號 ), 否則可能導致嚴重後
果。
English 中 文

3. Precautions
2
In this instruction manual, “WARNING” and “CAUTIONS” are defined as follows.
WARNING
WARNING: Misuse may potentially cause death of, or serious injury to the user.
CAUTION : Misuse may potentially cause injury to the user or physical damage
to the objects involved.
For your own safety, be sure to comply with these precautions.
CAUTION
Remove the pump securing screw (M4×25 marked red) from
the bottom of the station.
Failure to do so may result in serious problems.
When the power is on, the nozzle temperature is between
380°C/716°F and 480°C/ 896°F.
Since mishandling may lead to burns or fire, be sure to comply with
the following precautions.
● Do not touch the metallic parts near the nozzle, nearby plastic parts and the
spring iron holder.
● Do not use the product near flammable items.
● Advise other people in the work area that the unit can reach a very high tem-
perature and should be considered potentially dangerous.
● Turn the power off while taking breaks and when finished using the unit.
● Before replacing parts or storing the unit, turn the power off and allow the unit
to cool to room temperature.
To prevent damage to the unit and ensure a safe working environ-
ment, be sure to comply with the following precautions.
● Do not use the unit for applications other than desoldering.
● Do not rap the desoldering gun against the work bench to shake off residual
solder, or otherwise subject the iron to severe shocks.
● Do not modify the unit.
● Use only genuine HAKKO replacement parts.
● Do not wet the unit or use the unit when your hands are wet.
● Set the ceramic paper filter (S) for the filter retainer (station), and the ceramic
paper filter (L) for the filter pipe (gun).
● Maintain the desoldering gun and the station.
● While using the unit, donʼt do anything which may cause bodily harm or physi-
cal damage.
English
CAUTION:
This product includes such features as electrically conductive plastic parts and grounding of
the handpiece and station as measures to protect the device to be soldered from the effects
of static electricity. Be sure to observe the following instructions:
1. The handle and other plastic parts are not insulators, they are conductors. When
replacing parts or repairing, take sufficient care not to expose live electrical parts or
damage insulation materials.
2. Be sure to ground the unit during use.

4. Part Names
3
● Desoldering Gun
● Station
(Refer to p.19, 20 & 21 for part nos.)
Nozzle
Transmits heat for melting solder, En-
trance for melted solder.
Expendable part.
Heating Element
Inside requires cleaning.
Trigger
Squeeze to start absorption.
Do not pull the trigger before
fully heating the nozzle.
Filter Pipe
Set the ceramic paper filter (L) (No.A1033).
Contains melted solder and flux using filters.
Filters are expendable parts. Back Holder As-
sembly
Secures the filter
pipe.
Release Knob
Push down to remove
the filter pipe.
Indicator
Indicates when nozzle
and heating element
need cleaning and
when filters need
replacing.
(refer to p.9)
Hose
Connects to the vacuum outlet
cap (station).
Cord Assembly
Connects to the receptacle (station).
Temperature Control Knob
Provides nozzle temperature con-
trol. (refer to p.7)
Temperature Control Set Screw Clamp
Prevents the temperature control knob from be-
ing reset. (refer to p.7)
Vacuum Outlet Cap
Set the ceramic paper filter (S) (No.
A1009).
Connects with the hose. Filter inside
vacuum outlet cap is expendable.
Receptacle
Connector for the cord
assembly.
Power Lamp
Lights up when the power switch
is turned to ON.
Power Switch
When turned to ON, the heating
element starts to heat up.
CAL (Calibration)
Used for calibrating the temperature
after replacing the heating element.
Power Cord
Fuse Holder
• 100, 110V unit
contain 125V-2A fuse.
• 120V unit contains
250V-2A (U) fuse.
• 220, 230V unit contain
250V-1A fuse.
• Australian 240V unit
contains 250V-1A S
fuse.
English

4
5. Operation
Spring Iron Holder
(No.B1094)
Cleaning Pin Holder
(No.B1095)
Tube(red)
Cleaning Sponge
Securely insert the
cleaning pin holder.
Iron Holder Base
Preparation-Assembly and Connection
Assemble the HAKKO 474 on a flat surface.
1. Remove the pump securing
screw (M4 × 25 marked red)
from the bottom of the station.
2. Assemble the iron holder.
• Set the spring iron holder and
cleaning pin holder in the iron
holder base.
• Dampen the cleaning sponge with
water and then squeeze it dry.
CAUTION
The sponge is compressed.
It will swell when moistened with water.
Be sure to dampen the sponge with
water before use.
Be sure to remove the round portion of
the sponge.
3. Insert the desoldering gun
and cleaning pins.
• Fully insert the desoldering gun into
the spring iron holder.
CAUTION
The spring iron holder becomes
extremely hot during operation of the
desoldering gun. Do not touch the
spring iron holder during and immedi-
ately after using the gun.
4. Connections
CAUTION
Be sure to turn off the power switch
before connecting or disconnecting
the cord assembly and the power plug.
Failure to do so may damage the P.W.B.
• Connect the cord assembly to the
receptacle (marked “IRON”).
• Connect the hose to the vacuum
outlet cap (marked “VACUUM”).
Insert the cord as-
sembly by keying the
plug to the key on
the receptacle. Secure the plug by
turning it clockwise.
Fully insert the hose
into the vacuum out-
let cap.
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5
The power lamp doesnʼt light
up.
1. Is the power cord properly con-
nected?
2. Is the fuse blown?
The nozzle doesnʼt heat up.
1. Is the cord assembly properly
connected?
2. Is the heating element broken?
The power lamp
lights up.
The nozzle heats up.
CAUTION : The desoldering gun must be placed in the iron
holder when not in use.
5. Power switch
• Confirm that the power switch is set
in the OFF position, then connect
the power plug to the power source.
CAUTION
The entire unit is constructed of con-
ductive materials. Always ground the
unit.
• Turn the power switch to ON.
The power lamp should light up.
• The nozzle begins to heat up as
soon as the power switch is turned
to ON.
6. After turning the power
switch to ON, wait 3 min-
utes before beginning de-
soldering operations.
5. Operation
Desoldering
After turning the power switch to ON,
wait 3 minutes before beginning desol-
dering operations.
1. Set the temperature.
CAUTION
Always set the temperature to as low
as possible for the work being done.
• To more precisely set the tempera-
ture, measure the temperature at
the nozzle using a soldering iron
thermometer and adjust the tem-
perature control knob accordingly.
We recommend the HAKKO 191
thermometer or HAKKO 192 soldering
tester for measuring the nozzle tem-
perature.
• The temperature control knob can
be secured by tightening the tem-
perature control set screw clamp
(“+” screw) at the top of the HAKKO
474 unit.
Lock
Unlock
Secure the temperature
control set screw clamp with
a cross point screwdriver.
The temperature can be adjusted between 380°C (716°F) and 480°C (896
°F) with temperature control knob.
Please refer to the chart below, and adjust the temperature control knob.
knob
1 and 2
3 and 4
5 and 6
P.W.B.
Single-sided P.W.B.
Through-hole P.W.B.
Multilayer P.W.B.
CAUTION
Never insert the cleaning pin in the
hole of temp. control set screw clamp.
As this may result in damage to the
unit.
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6
Wipe away any oxide or old solder
from the nozzle using the hole in
the center of the sponge.
2. Clean the tip of the nozzle.
• Keep the solder-plated section of
the nozzle a shiny white by coating
it with a small amount of solder.
If the tip of the nozzle is coated with
oxide, the nozzleʼs heat conductivity
will be lowered.
Coating the tip with a small amount
of fresh solder ensure maximum heat
conductivity.
3. Melt the solder.
• Apply the nozzle to the soldered
part and melt the solder.
CAUTION
Never allow the nozzle to touch the
board itself.
• Confirm that the solder is melted.
CAUTION
To confirm that all solder is melted,
observe the inside of the hole and the
backside of the P.W.B. If this is difficult
to do, try slowly moving the lead with
the nozzle – If the lead moves, the
solder is melted.
CAUTION
Never move the lead by force. If it
doesnʼt move easily, the solder isnʼt yet
fully melted.
4. Absorb the solder.
• After confirming that the solder is
completely melted, absorb the sol-
der by squeezing the trigger on the
gun.
CAUTION
Never leave any solder remaining
inside the hole in the P.W.B.
• After fully absorbing all the solder,
cool the soldering junction in order
to prevent it from becoming resol-
dered.
5. Problems during desolder-
ing.
• If solder remains, resolder the com-
ponent and repeat the desoldering
process.
Nozzle
P.W.B.
Solder
Lead
Slowly move
the lead with
the nozzle.
Absorb the solder by slowly
moving the lead back and
forth with the tip of the
nozzle.
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7
5. Operation
Heated solder and flux can cause oxides to form and adhere to the nozzle and the
inside of the heating element. These oxides not only lower the heat conductivity, but
can also clog the nozzle and heating element, resulting in a drop in suction efficiency.
Should there be a noticeable drop in suction efficiency during operation, replace the
filter and clean the nozzle and heating element with the provided cleaning pin.
Cleaning during Operation
1. Observing the indicator
While looking at the indicator and
with the hole of the nozzle open,
pull the trigger and look at the in-
dicator. If it is red, clean the nozzle
and heating element, empty the
filter pipe, and replace the filters. If
the indicator is blue, cleaning is not
necessary and operations can be
resumed.
CAUTION
The indicator will not operate accurately if
the hole of the nozzle is closed or if the sol-
der in the hole of the P.W.B. is not melted.
CAUTION
The indicator on the HAKKO 475 reads
in a different way.
For instruction on the reading the
HAKKO 475 indicator, please refer to
the HAKKO 475 instruction manual.
2. Replacing the filter
Replace the filter as shown 1 to 3.
During operation, the filter pipe is
very hot. Wait until the filter pipe is
cool before replacing the filter.
We recommend keeping a second
filter pipe containing new filters han-
dy, and replacing the installed filter
pipe with this backup filter pipe.
3 Replace the entire filter pipe
with he provided backup filter pipe. 2 Pull
1 Down
Normal
Blue or slight
amount of red
can be seen.
Abnormal
More than half
of the indicator
is red.
Solution
If the indicator is more than
half red, replace the filter
and clean the nozzle and
the inside of the heating
element.
(refer to p.12 Maintenance
of the Desoldering Gun)
CAUTION : If there is a noticeable drop in suction
efficiency, clean the nozzle and heating ele-
ment with the cleaning pin.
Problems during Desoldering
A. The solder in the junction is
not sufficiently melted.
B. Suction power is dropping.
A. The solder in the junction is not sufficiently melted.
● Temperature is not high enough
The following parts require a greater heat capacity to desolder.
• Multilayer P.W.B.s, power supplies, ground planes in through-hole
P.W.B.s, high-capacity transistors, triacs with heat radiation fins, tuner
P.W.B. ground wires, and large-scale transformer terminals.
Use a preheating oven or heating gun to heat the P.W.B. to a temperature that
wonʼt damage the board or its components [between 70°C (160°F) and 80°C (180
°F)], then desolder. Do not increase the temperature of the gun by recalibration
as this may damage the P.W.B. and its components.
● Nozzle is worn out.
• When the nozzle begins to wear out, the heating efficiency begins
to decline. Check the nozzle. If the solder plating is damaged, or the
nozzle is eroded, replace the nozzle. (refer to p.9)
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8
Post-operation Maintenance
To ensure a long service life, always per-
form the following maintenance procedures
immediately after using the HAKKO 474
unit.
B. Suction power is dropping.
• Replace the filters, and clean the nozzle and the inside of the heating
element, (refer to p.12 to p.16, Maintenance of Desoldering Gun and
Station)
● Air is leaking from the vacuum system.
Air leakage cannot be determined from the indicator.
Check the air-tightness of the following parts and replace any that are
worn.
■ Remove all solder from the inside of the nozzle and heating element.
■ Clean the tip of the nozzle with the cleaning sponge, then coat the tip
with a fresh layer of solder to protect the solder plating.
a. Contact point of the nozzle
and heating element
b. Front holder and nearby
parts
c. O-ring in the back holder
d. Hose
e. Vacuum outlet cap
f. Packing and nearby parts
Troubleshooting Guide WARNING : If the power cord is damaged, it must be replaced by the
manufacturer, its service agent or similarity qualified person
in order to avoid personal injury or damage to the unit.
● Power lamp does not light up.
• Is the power cord plugged in correctly.
Securely insert the power cord into the power supply.
• Is the fuse blown?
Determine why the fuse blew and eliminate the cause, then replace
the fuse.
Example Is the inside of the gun short-circuited?
● Pump does not operate.
• Is the cord assembly properly connected?
Reconnect the cord assembly. (refer to p.4)
• Is the nozzle or hole in the heating element clogged?
Clean it. (refer to p.9)
● Solder is not being absorbed.
• Is the spring filter full of solder?
Replace it with a new one. (refer to p.10)
• Is the ceramic filter hardened?
Replace it with a new one .
• Is there a vacuum leak?
Check the connections and replace any worn parts. (refer to p.8)
● The nozzle does not heat up.
• Is the desoldering gun cord assembly properly connected?
Reconnect it. (refer to p.4)
• Is the heating element damaged?
Replace it. (refer to p.12)
NOTE : When repairs are needed, please send both the desoldering gun
and the station to your sales agent.
English

6. Maintenance
9
Properly maintained, the HAKKO 474 desoldering gun should provide years of good service.
Efficient desoldering depends upon the temperature, and the quality and quantity of the solder and flux. Per-
form the following service procedures as dictated by the conditions of the gunʼs usage.
WARNING : Since the desoldering gun can reach a very high temperature, please work carefully.
Except when cleaning the nozzle and heating element, always turn the power switch off and discon-
nect the power plug before performing any maintenance procedure.
Servicing the Desoldering Gun
CAUTION
The desoldering gun will be extremely hot.
During maintenance, please wear gloves and
work carefully.
1. Inspect and clean the nozzle.
• Plug in the power cord, turn the
power switch On and let the nozzle
heat up.
• Clean out the hole of the nozzle
with the nozzle cleaning pin.
CAUTION
The cleaning pin will not pass through the
nozzle until the solder inside the nozzle is
completely melted.
• If the cleaning pin does not pass
through the hole in the nozzle,
clean with the cleaning drill.
• Check the condition of the solder
plating on the tip of the nozzle.
• If it is slightly worn, recoat the tip with
fresh solder to prevent oxidation.
• Check the condition of the surface
and inside hole of the nozzle.
• If either is worn or eroded, or the
inside diameter seems unusually
wide, replace the nozzle.
CAUTION
The inside hole and the surface of the
nozzle is plated with a special alloy.
Should this alloy become eroded by high-
temperature solder, the nozzle will not be
able to maintain the proper temperature.
2. Disassemble the heating
element.
CAUTION
The heating element is very hot during
operation.
3. Clean out the hole in the
heating element with the
provided cleaning pin.
CAUTION
Be sure the solder in the hole in the heat-
ing element is completely heated, before
cleaning the hole.
• If the cleaning pin cannot pass
through the hole, replace the heat-
ing element.
• Turn the power off after cleaning.
Cleaning with the nozzle cleaning pin
Cleaning with the cleaning drill
• Before cleaning
• After cleaning
Solder plating
Diameter of hole is wid-
ened through erosion.
(Desoldering Gun)
The cleaning pin passes com-
pletely through the hole.
Insert the bit while turning it clockwise.
Pull the drill bit out straight without turning it.
CAUTION
If the cleaning drill is forced into the nozzle,
the drill bit could break or be damaged.
CAUTION
Please use the proper size cleaning pin or
cleaning drill for the nozzle diameter.
CAUTION
Unfortunately, it is often difficult to observe
this condition. Therefore, if desoldering
efficiency goes down and all other parts
appear to be OK, the nozzle is probably
eroded and should be replaced.
Heating Element Element Cover
Nozzle Nut
Remove the nut with the attached wrench.
Scrape away all oxidation from the hole in the heating element until the
cleaning pin passes cleanly through the hole.
The cleaning pin passes cleanly
and completely through the hole.
English