Hakko Electronics 474 User manual

CAUTION : Remove the pump securing screws (M4x25 marked red)

from the bottom of the station.

Failure to do so may result in serious problems.

Desoldering Tool

Instruction Manual

Thank you for purchasing the HAKKO 474 Desoldering

Tool.

Please read the manual before using the HAKKO 474.

Store the manual in a safe, easily accessible place for

future reference.

Packing List··················································

Precautions··················································

Part Names

Operation

Maintenance

Replacement Parts

Parts List

Specifications, Wiring·······························

(Desoldering Gun)···················

(Station)···································

(Preparation-

Assembly and Connection)

······

(Desoldering)························

(Cleaning during Operation)

········

(Problems during Desoldering

)

(

Post-operation Maintenance

)···

(Troubleshooting Guide)········

(Desoldering Gun)············

(Station)····························

(Replacing Heating Element)

····

(Station)···························

(Desoldering Gun)·················

Table of Contents

5·6

7·8

12~14

15~16

17~18

19~20

SpannerStation

Iron Holder Base Spring Iron Holder Cleaning Sponge

Filter Pipe

Ceramic Paper Filter (S)

Ceramic Paper Filter (L) Spring Filter

Cleaning Pin for Ø1.0 mm (0.04 in) Nozzle

Cleaning Drill for Ø1.0 mm (0.04 in) Nozzle

Cleaning Pin for Heating Element

Cleaning Pin Holder

Silicone Grease Desoldering Gun

Packing List Please check to make sure that all the items listed below

are included in the HAKKO 474 package.

Station····················································

Desoldering Gun····································

Iron Holder Base····································

Spring Iron Holder··································

Cleaning Sponge····································

Filter Pipe···············································

Ceramic Paper Filter (S)·····································

Ceramic Paper Filter (L)·····································

Spring Filter·······················································

Cleaning Pin (for Ø1.0mm [0.04 in] nozzle)········

Cleaning Pin (for Heating Element)····················

Cleaning Pin Holder············································

Cleaning Drill (for Ø1.0mm [0.04 in] nozzle)·······

SIlicone Grease··················································

Spanner······························································

Instruction Manual··············································

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

temperature 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

environment, 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, don't do anything which may cause bodily harm

or physical damage.

Precautions

In this instruction manual, "WARNING" and "CAUTION" 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 screws (M4 x 25 marked red)

from the bottom of the station.

Failure to do so may result in serious problems.

Desoldering Gun

(Refer to p.19,20,21 for part nos.)Part Names

Cord Assembly

Connects to the receptacle (station).

Hose

Connects to the vacuum outlet cap (station).

Trigger

Squeeze to start absorption.

Do not pull the trigger before

fully heating the nozzle.

Heating Element

Inside requires cleaning.

Nozzle

Transmits heat for melting solder.

Entrance for melted solder.

Expendable part

Filter Pipe

Set the ceramic paper filter (L) (No. A1033).

Contains melted solder and flux using filters.

Filter are expendable parts.

Back Holder

Assembly

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)

Station

Temperature Control Knob

Provides nozzle temperature

control. (refer to p.7)

Temperature Control Set

Screw Clamp

Prevents the temperature

control knob from being reset.

(refer to p.7)

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.

Receptacle

Connector for the cord

assembly.

Vacuum Outlet Cap

Set the ceramic paper filter (S)

(No, A1009).

Connects with the hose, Filter

inside vacuum outlet cap is

expendable.

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.

Power Cord

CAUTION

The spring iron holder becomes

extremely hot during operation of the

desoldering gun. Do not touch the

spring iron holder during and

immediately after using the gun.

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.

Preparation-Assembly and Connection

Assemble the HAKKO 474 on a flat surface.

Remove the pump securing

screws (M 4 x 25 marked red)

from the bottom of the station.

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.

Insert the desoldering gun

and cleaning pins.

·Fully insert the desoldering

gun into the spring iron holder.

Operation

Spring Iron Holder

(No. B1094) Cleaning Pin Holder

(No. B1095)

Securely insert the

cleaning pin holder.

Cleaning Sponge

Iron Holder Base

Tube (red)

Secure the plug by

turning it clockwise.

Fully insert the hose

into the vacuum

outlet cap.

Insert the cord

assembly by keying

the plug to the key

on the receptacle.

The power lamp

lights up.

The nozzle heats up.

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.

CAUTION

The entire unit is constructed of

conductive materials. Always ground

the unit.

CAUTION :

The desoldering gun must be placed in the iron

holder when not in use.

The power lamp doesn't

light up.

1. Is the power cord properly

connected?

2. Is the fuse blown?

The nozzle doesn't heat up.

1. Is the cord assembly

properly connected?

2. Is the heating element

broken?

Connections

·Connect the cord assembly to

the receptacle (marked "IRON").

·Connect the hose to the

vacuum outlet cap (marked

"VACUUM").

Power switch

·Confirm that the power switch

is set in the OFF position, then

connect the power plug to the

power source.

·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.

After turning the power

switch to ON, wait 3

minutes before beginning

desoldering operations. 6

Lock

Unlock

Secure the temperature

control set screw clamp

with a cross point screwdriver,

Wipe away any oxide or old solder

from the nozzle using the hole in

the center of the sponge.

Always set the temperature to as low

as possible for the work being done.

CAUTION

Never insert the cleaning pin in the

hole of temp. control set screw clamp.

As this may result in damage to the

unit.

CAUTION

Desoldering

After turning the power switch to

ON, wait 3 minutes before begin-

ning desoldering operations.

·The temperature control knob

can be secured by tightening

the temperature control set

screw clamp (Ò+ Ó screw) at

the top of the HAKKO 474 unit.

·To more precisely set the tem-

perature, measure the temper-

ature at the nozzle using a

soldering iron thermometer and

adjust the temperature control

knob accordingly.

Set the temperature.

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.

We recommend the HAKKO

191 thermometer or HAKKO

192 soldering tester for

measuring the nozzle tem-

perature.

If the tip of the nozzle is

coated with oxide, the

nozzle's heat conductivity

will be lowered.

Coating the tip with a small

amount of fresh solder

ensures maximum heat

conductivity.

knob P.W.B.

1 ~ 2

5 ~ 6

3 ~ 4 Single-sided P.W.B.

Through-hole P.W.B.

Multilayer P.W.B.

Please refer to the chart below, and adjust

the temperature control knob.

The temperature can be adjusted between

380˚C (716˚F) and 480˚C (896˚F)

with temperature control knob.

Operation

Never allow the nozzle to touch the

board itself.

CAUTION

To confirm that all the 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

doesn't move easily, the solder isn't

yet fully melted.

CAUTION

Never leave any solder remaining

inside the hole in the P.W.B.

CAUTION

·Apply the nozzle to the soldered

part and melt the solder.

·Confirm that the solder is

melted.

Melt the solder.

Absorb the solder.

·After confirming that the solder

is completely melted, absorb

the solder by squeezing the

trigger on the gun.

·After fully absorbing all the

solder, cool the soldering junc-

tion in order to prevent it from

becoming resoldered.

·If solder remains, resolder the

component and repeat the

desoldering process.

Problems during

desoldering

Absorb the solder by slowly

moving the lead back and

forth with the tip of the

nozzle.

Slowly move

the lead with

the nozzle.

Nozzle

P.W.B.

Solder

Lead

The indicator will not operate accurately

if the hole of the nozzle is closed or if

the solder in the hole of the P.W.B. is

not melted.

CAUTION

The indicator on the HAKKO 475 reads

in a different way.

For instructions on the reading the

HAKKO 475 indicator, please refer to

the HAKKO 475 instruction manual.

CAUTION

If there is a noticeable drop in suction

efficiency, clean the nozzle and heating

element with the cleaning pin.

CAUTION :

Normal Abnormal Solution

Blue or slight

amount of red

can be seen.

More than half

of the indicator

is red.

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)

Replace the entire filter pipe

with the provided backup filter pipe.

Cleaning during Operation

While looking at the indicator

and with the hole of the nozzle

open, pull the trigger and look

at the indicator. 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.

Observing the indicator

Replacing the filter

Replace the filter as shown

. 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

handy, and replacing the installed

filter pipe with this backup filter

pipe.

Pull

Down

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.

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