INSTRUCTION MANUAL

HS-51-220
SOLDERING STATION

Thank you for purchasing the HOZAN HS-51-220 SOLDERING STATION. With propercare and handling, this fine instrument will provide years of trouble-free operation. Please
read this entire instruction manual carefully before attempting to place this instrument inservice. Please keep this instruction manual available for reference.

Identification of parts and contents
Temperature display
Power monitor lamp

Iron standStation▼key

SLEEP lamp
Operation panel▲key

Tip cleaner

Power switch
LOCK key
Tips are sold separately.
Purchase appropriate
tips according to yourwork.

SET key

Tip

Iron

Slide leverSpecifications
220V AC ±10％, 50/60HzPower Consumption 80W (soldering iron 72W)
HeaterSetting temperature 50-450℃
Standard tip

Tip (with build-in heater)
is sold separately.

External dimensions

Station
115(W)X98(H)X146(D)mm
Soldering iron

１

WeightStation 1.8kg
Soldering iron 28g(not including the cord)
Ground resistanceRg<1x1012Ω

Power cord 1.2m

Warning and caution symbols
These symbols are used throughout the instruction manual to alert the user to potential
safety hazards as follows :Warning … Notice when incorrect handling could cause the user's death or serious
injury.
Caution … Notice when incorrect handling could cause injury to the user or material
damage.
Even if the instructions do not have Caution mark, there are some possibilities foraPrecautions
 Warning
1. Use with the voltage described in the specifications of this instruction manual.
Otherwise, this could cause a fire or malfunction.
2. Use only under combination of these station and iron.
3. Always connect to grounded line. Otherwise, this could cause not only incomplete
electrostatic discharging measures but also irregular temperature control to the tip.
4. Do not handle energized components. This could cause a shock since the grip of
the iron is made of conductive material.
5. Do not modify this product.
6. The tip becomes extremely hot. Never make the following things come closer to the
hot area.
・Human bodies such as hand, face and so on.
・Highly volatile chemicals, such as alcohol and paint.

 Caution
1. Place the station and iron stand on a level and stable surface without vibration.
2. Store in dry surroundings after use.
3. Do not stretch or tightly fold the internal cord or the power cord so as to avoid
damaging these cords. This could cause a short circuit and a fire.
4. Scrub the oxides of the solder, flux on the tip with the sponge of the iron stand. If you
remove the solder by swinging the iron around or by striking it on the edge of a deskor something, the heater breaks and your body get injured.
Always water the sponge of the iron stand during use.

２

Explanation for the operating panel
Identification of the parts on the operating panel and functions are follows.

①Power monitor lamp
Illuminates when the power is supplied.

②Sleep lamp
Blinks when set sleep.
Blinks frequently 30 seconds before entering in sleep mode, and illuminates when insleep mode.

③Display
Displays temperature, various letters whensetting something.

⑥Lock key
Use when setting and releasing key lock.

④Alarm lamp

⑦Set key

Blinks when out of upper and lower limit
temperature.
Illuminates when auto-power-off function.
⑤Lock lamp
Illuminates when key locked.
Blinks when operating key lock setting.

Use when setting all kinds of function.

⑧▲key, ⑨▲key
Use when setting for up and down the value.

Preparation
the tip cleaners, the wrapping of which
１ Putmust be removed, into the pit of the ironstand.

Tip cleaners

a tip to the iron.
２ Attach
Put the iron on theiron stand.

SpongeWater the sponge.
Engage the waned
parts of the circles.

 Caution● The station must be revised according to the tip to be used. See page 5.
● Use the exclusive iron stand provided. Other than this could melt the iron.

３

Preparation
the plug of the iron to the receptacle of the
３ Connect
station.
The contact pins are fixed as the illustration. Engage
the projection at the zenith with the zenith of thereceptacle.
sure that the power switch is turned off, then
４ Be
connect the power plug to the wall outlet.

 Caution
Always ground when use. This is important to prevent operator’s electric shock and toprotect the temperature control circuit from outer noises.

to using a new tip, perform tinning
５ Prior(applying solder to the tip). Put solder to thetip and wait until solder melts.

Tinning is finished by that the surface is wellcovered.

Power switch

 Caution● If solder balls up and does not stick to the tip, this is too hot or an oxidation film hassoiled the surface. Clean the tip, allow to cool, and begin again.

● The tip surface is apt to be oxidized if the iron is heated without load. Set less than

300℃. Previously put solder against the area to be soldered and wait until melts.

４

Operation
the power switch on.
１ TurnThe temperature display will rise to 250 in an
instant.

The station is set in 250℃ when shipping. Can be
set from 50℃ to 450℃, but does not drop under
the surrounding temperature.

Changing the set of using temperature[Example] Changing the using temperature from 250 ℃ to 340℃.
Press the SET key.

Displayed

Press the ▲key to display 340.
When hold pressing, the display changes
quickly. If pass the aim number, collect byclicks of the ▲key and the ▼key.
Press the SET key. Setting is completed.
If nothing is pressed for 30 seconds, the temperature automatically
returns to the temperature setting before it was changed. The tip
temperature will remain unchanged.
● Setting the temperature over 50℃ higher than the sleep temperature, which is

explained on page 6, is necessary.

finishing work, return the iron back to the iron stand.
２ WhenStore in a safety place after turning the power switch off and pull the power plugfrom the outlet.

 Caution
The tip has a precise temperature sensor which reacts to methodically soldering load
and keeps temperature near the setting in close cooperation with the station. Therefore,
never set to unnecessary high temperature foreseeing temperature dropping. Please
set to temperature minimum to melt solder. This avoids damaging electro components.

Periodical inspection for the tip
Temperature can not be properly managed if the tip surface iscovered with carbide or oxide film. Periodical inspection andcleaning are recommended. Polish with such as the K-142
Polishing pad. Do not use a coarse file or coarse paper.

５

Sleep function

Setting the sleep temperature

Explanation for sleep function
Soldering tip temperature

The sleep start timer function automaticallylowers the temperature of the tip after a preset
period of inactivity. This function reduces power
consumption and helps extending soldering tip
life. This sleep function can be used with theauto power off function (see page 8) together.

Sensitivity
Sensitivity

Set temperature

Operation
Sleep
start time

Sleep start

Sleep setting temperature[Example] Changing the sleep temperaturePower ON
from 200℃ to 150℃.
Displayed
Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.

Time

Press the SET key to display “SSt”.

Press the ▲key until the display
changes to 150.
Press and hold the SET key until the set using temperature is displayed.
Setting is completed. The tip will keeps 150℃ when the unit becomes in sleep
function.
● While setting the sleep function, the SLEEP lamp

will blink.

● The blinking of the SLEEP lamp will

increase 30 seconds before entering sleep mode.
When the soldering station has entered sleep mode,
the SLEEP lamp will change from blinking to continuously lit, and the display will alternate between“SLP” and the temperature.
● The dot under and right of the temperature display will illuminate when the tip temperature is in the sleep sensitivity and turn off when out of the sleep sensitivity.
● Sleep temperature must be set over 50℃ lower than using temperature setting.

Setting the sleep start time
[Example] Changing the sleep start time from 5 minutes to 10 minutes.
Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display “ct”.

Press the ▲key until the display
changes from 5 to 10.
Press and hold the SET key until the set using temperature is displayed.
Setting is completed. The unit will sleep if there is no work over 10 minutes.

６Sleep function
Canceling the sleep function

If set the sleep start time to 0.00, the sleep function will be turned off and the sleep lamp
will go out.

Returning from the sleep function

To return from the sleep function, do one of the procedures below.
1. Press any key on the control panel.
2. Let the tip contact to the watered sponge.
If setting the sleep temperature to less than 100℃, only the procedure 1. is effective.

Setting the sleep sensitivity
The set sleep sensitivity, as the standard for considering that there is no work, ischangeable. The unit is set to 5℃ when sipping, and will be in the sleep mode if thecondition that the tip temperature does not rise or drop over 5℃ continues over the set
sleep start time.
[Example] Changing the sleep sensitivity from 5℃ to 3℃
Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display “dIF”.

Press the ▼key until the display
changes to 3.0.
Press and hold the SET key until the set using temperature is displayed.
Setting is completed. The unit will be in the sleep mode if the condition thatthe tip temperature does not rise or drop over 5℃ continues over the set
sleep start time.

℃ and 100℃.
If it is set too high, there is a possibility that the sleep function will be activatedeven during soldering. If this happens, reduce the sleep sensitivity value.

● Sleep sensitivity value can be set anywhere between 0

Information▼key
for one second continuously. This function is very useful for such as leaving thework booth temporarily.

● To use sleep function manually during the operation, press and hold the● Only for the first time after power on, the longer value of twice of the set time or

10 minutes is applied.

７

Auto power off function
When the unit is not operated during the preset time, the unit is automatically turned power off. Even if the use forgets to turn off the unit, this auto power off function works to
keep the unit inactive, and prevent accidents such as fire.

Soldering tip temperature

Soldering tip temperature

Explanation for auto power off
Sensitivity
Set temperature
Sensitivity
Operation

Power ON

Auto power
off time

Power offTime

Sensitivity
Set temperature
Sensitivity
Sleep setting
temp.

Operation

Power off
Sleep
Auto power
start time off timePower ONTime

Setting the auto power off start time
[Example] Changing the auto power off start time from 60 minutes to 30 minutes.
Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display “SUt”.

Press the ▲key until the display
changes to 30.
Press and hold the SET key until the set temperature is displayed.
Setting is completed. Power will be turned off if there is no work for 30 minutes.
● When auto power off time value is set to 0, the auto power off function is off.
● “Sdn” and the temperature are displayed alternately while the unit is in the auto pow-

er off mode and the LED under the one digit on the temperature window alone lights
when the temperature becomes lower than 50℃.
● To use the unit again after auto power off, turn the power off and then on again.

Setting the temperature range for the alarmThis is the function that informs the temperature
condition detecting the difference of set tempera- Explanation for alarm function
ture and the actual tip’s temperature.
When the tip’s temperature becomes out of set
temperature, the buzzer will sound continuously Lower limit temp. Set temp. Upper limit temp.
and the alarm lamp will blink.
Each limit of upper and lower temperature is able to set to 3℃ to 100℃. If set to a smallvalue than 3, the alarm is canceled and [ - - - ] is displayed.
The upper and lower limits are set to 50℃ initially by the manufacturer.

８

Setting the temperature range for the alarm
Setting the range of alarm temperature
The upper and lower limit values are set to 50℃ when shipping.
Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display “H” or“L”.
“H” means upper temperature limit.
“L” means lower temperature limit.
Change the setting using the▲and▼keys.

Press and hold the SET key until the set temperature is displayed.
Setting is completed.

Setting the soldering time for the alarmThis is the function that informs when the tip is applied to the object beyond the set timesounding the buzzer to prevent breaking objectives.

Explanation for soldering time
Soldering tip temperature

The alarm range canbe set to 0.3 to 30
seconds. If set to asmall value than 0.3,
the alarm is canceled and [ - - - ] isdisplayed.

Sensitivity
Sensitivity

AtPower ON

①The tip temperature becomes toout of the sensitivity and starts
the soldering temperature (At).
Set
temperature ②The soldering time passes andthe buzzer sounds (the display
flushes two times.
③The operator separates thesoldering iron from the object.
Time

Setting the range of soldering time
[Example] Setting the soldering time for alarm to 1.5 seconds.
Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display “At”.

Press the ▲key to change [ - - - ]to 1.5.
Press and hold the SET key until the set temperature is displayed.
Setting is completed.

９Setting the buzzer soundThis setting switches the buzzer on and off. The initial setting is on (the buzzer sounds).
Set to off for mute (no sound).

Setting the buzzer sound ON/OFF
Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.

Displayed

Press the SET key to display “bUZ”.

Press the ▲key to change to on.

Press the ▼key to change to off.

Press and hold the SET key until the set using temperature isdisplayed. Setting is completed.

Calibration function
The unit displays certain temperature since the iron has a precise inner temperature
sensor. However, in some cases it is slightly different than values actually measured by athermometer.
If you give priority to the results measured by a thermometer over this unit’s display,please calibrate the unit as follows.

How to calibrate the temperature[Example] When the set temperature is 300℃, thermometer value is 295℃, and thecalibration value to be input is 5.
Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.

Displayed

Press the SET key to display “cAL”.

Press the ▲key to change from 0 to
5.
Press and hold the SET key until the set using temperature is displayed.
Setting is completed. The thermometer will display 300℃ when this unit displays
300℃.
● This calibration should be carried out while being revised according to tip type

explained on page 5.

１０Changing the scale
Temperature is displayed by Celsius scale. This can be changed to Fahrenheit scale if
desired.

Setting the scale to Fahrenheit scale

Displayed

Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.
Press the SET key to display“c - F” “ c”.
Press the ▲key to change to“c - F” “ F”.
If change to Celsius scale from
Fahrenheit scale, use the ▼key.
Press and hold the SET key until the set using temperature is displayed. The scale
was changed to Fahrenheit scale. Hide the “℃” stamped on the panel.

Parameters
Term (display panel letters)

Range

Unit

Shipping default setting(SSt+50)
—450

℃

250

Revise No. (tPn)

0—4

ー

1

Temperature
calibration (cAL)-50—50℃

0Sleep temperature (SSt)

0—(Pt-50)℃

200

Sleep start time (ct)0.00—999

minute5

Sleep sensitivity (dIF)

0—20.0℃

2.0

Auto power off start time
(SUt)

0—999

minute60

Soldering time (At)---,
0.3—30second---Upper limit (H)

---,
3—100

℃

50

Lower limit (L)

---,
3—100

℃

50

Buzzer (bUZ)

on/offーonChanging the scale

c/F

Set using temperature

Display panel

１１cOptions
Tips
Purchase appropriate tips according to your work.

HS-51B03

HS-51B01

HS-51B02

HS-51B04

HS-51B09

HS-51BC01

HS-51BC02

HS-51BC03

HS-51C01

HS-51C02

HS-51C03

HS-51C04

HS-51C05

HS-51C06

HS-51D01

HS-51D02

HS-51D03

HS-51D04

HS-51D05

HS-51D06

HS-51K02

How to change the tip

２

１
Drag the slide
lever of the grip inthe direction of３
Hold theblack plastic part andpull the tipout.

 Caution●
・Insertthe tip securely until snug. Otherwise, the tip
does not function properly.
●
・Beforereplacing the tip, disconnect the power plugfrom the wall outlet and allow the soldering iron tocool to room temperature.

１２

Plug the new
tip until snug.

Engage thewaned parts of thecircles.

Store the removed
tips on the ironstand.

Temperature revision when changing the tip
When changing the tip to different type of tip, revision of the tip
temperature is required before starting soldering work.
Please reset as follows according to the number with a circle
stamped near the root on the tip.
If change to a tip which has the same revise number, revision is
unnecessary.

Revision according to the tip type[Example] Set revise No. from ① to ②.
Press and hold the SET key until
the display turns to “tPn” after
temperature blinks.

Displayed

Press the ▲key to display “2”.

Press and hold the SET key until the set using temperature isdisplayed.

Replacement parts

Relational productHS-51-1 Tip cleaner (sponge)

K-142 Polishing pad
Polishing the oxidized tip

HS-51-2 Iron standHS-51-3 Iron, complete
HS-51-4 Tip cleaner (wire)

１３

Key lock function
The key lock function locks the temperature and parameter settings. Therefore, thetemperature and parameters cannot be changed by any unauthorized personnel.
Authorized personnel may use a code number to set, or release the key lock function.
The unit is not locked when shipping.

Setting the cord number[Example] Setting the cord number 123.
Displayed

Press the LOCK key.

Press the ▲and ▼key todisplay 123.
Press the LOCK key.
Number 123 blinks 5 times.
The unit is locked.
● Only one cord number can be registered.

How to release/lock
Each setting can be changed when locking is released.
It is locked when this operation is done under the lock released state.
It is release when this operation is done under the locked state.
Press the LOCK key.
Press the ▲and ▼key to display the registered cord number.
Press the LOCK key.
Number 123 blinks 5 times.
The unit is released (locked.)● Each settings explained on pages 4-10 when the unit is locked.
● If leave under lock released state, everyone can change every setting.
● If an incorrect code number is input, the display will show “nG”, and return to theinitial display.

lockedlocked１４

Key lock function
Changing the cord number[Example] Changing the cord number from 123 to 234.
Displayed

Press the LOCK key.

Press and hold the LOCK key
until the display turns to display
as bottom of the right illustration,
after turned to “cod”.

using the ▲and▼keys, display the usual
cord number 123.
Press the LOCK key.

using the ▲and▼keys, display the newcord number 234.

Press the LOCK key.
Number 234 blinks 5 times.
The cord number is changed to
234.

１５

Key lock function
Resetting the personal identification numberThis procedure releases the key lock function which means that unauthorized
personnel can change temperature and/or parameter settings. Please tear and keep
this page separately with authorized personnel.
Displayed

Press the LOCK key.

Press and hold the
LOCK key and the▲key simultaneously
until the display turns
to “dEc”.
using the ▲and▼keys, display 471.
Press the LOCK key.
Number 471 blinks 5 times.
The personal identification number is reset.

Memo
Recording the registered number is recommended.

The whole initialization
Treating this procedure makes all the settings except the personal identification number are reset to the initial state from the manufacturer.

Initializing all the setting
Press and hold the ▲ and ▼keys while
the setting temperature is displayed.
After “Int” blinks 5 times,
The temperature is displayed.
All the settings are initialized.

１６

Trouble shooting
Following cases are not serious conditions. Check carefully with guide and take suitablesteps.
Error message

Cause

Countermeasure

The tip is set
loosely.

Check the tip setting. If set loosely, insert it
Securely.

The sensor or
circuit in the tip
is down.

Replace the tip or the iron with a new one.
This message is also displayed when changing thetip. Please press any keys on the panel to reset.

Memory error.

The password and/or parameter are in the initialcondition. Setting again will provide trouble-free
operation. If occurs frequently, ask to repair.

Sensor error,
heater error.

The sensor in the tip and/or the heater may bedamaged. Replace the tip with a new one. Turnthe unit OFF and turn it ON again.

Sensor error.

There is a problem with the sensor. Replace thetip. Turn OFF the unit, and then turn the powerswitch ON again after changing the tip.

１７

Antistatic standards
HOZAN’s ESD-safe products are controlled with reference to the Japanese standard (RCJS-5-1*) which is based on the international standard (IEC61340-5-1).
Products which bear the ““ mark are products to which the standard values (see tablebelow) apply. The “ESD Standard” listed on each of the product pages denote the HOZAN
standard for the product.
ESD-safe item requirements (Excerpted from RCJS-5-1:2014)【Item-specific requirements】

EPA ground resistance orresistance Rg (Ω) ofgroundable point
Tool

Charge decay*2

Rg＜1×1012*1【System requirements】

Less than 2 secs. ｆrom initialvalue (Max. 1,000 V) to 10 %Tool system*1. . . There is no prescribed “minimum resistance” value for protecting an ESDS device.
However, such a minimum resistance is required in some cases to ensure safety.
For details, refer to the following standards:IEC61010-1, IEC60536, IEC60364.
point to point*2. . . A charge decay is required in case where the surface resistance,
resistance, or the groundable point resistance exceeds 1 X 1000 Ω and in casewhere the material is not homogeneous, and/or has insulated portion.

* Reliability Center for Electronic Components of Japan (RCJ).
“Protection of Electronic Devices from Electrostatic Phenomena-General Requirements” (RCJS-5-1)

１８

1-2-12 Saiwaicho, Naniwa-ku, Osaka 556-0021, Japan
https://www.hozan.co.jp/E/
E-mail：th@hozan.co.jp

23.09

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