Taiyo Electric Goot RX-852AS User manual

1
TAIYO ELECTRIC IND.CO.,LTD.
TEMPERATURE-CONTROLLED
LEAD-FREE SOLDERING STATION
RX-852AS
Thank you for buying a goot soldering station. Your new soldering station has been
engineered and manufactured to the goot high standards for dependability, ease of operation,
and operator safety. If you follow the instructions and safety precautions in this manual and
use the soldering station properly and only for what it is intended, you will enjoy years of safe,
reliable service. Thank you again for buying a goot soldering station.
WARNING
Before using the soldering station, read the Operation Manual.
Failure to follow the safety precautions and instructions in this
manual could result in serious injury and property damage.
OPERATION MANUAL
KEEP THIS MANUAL FOR FUTURE REFERENCE
TAIYO ELECTRIC IND.CO.,LTD.
Soldering Iron Stand is included.
Soldering iron stand usage is described in this manual.
Tip is not included.
Please buy it separately.
Ver.2

TAIYO ELECTRIC IND.CO.,LTD.
2
WARNING
Failure to obey a safety warning could result in serious injury
or death to yourself or to others. Always follow the safety
precautions to reduce the risk of electric shock, fire or
personal injury.
CAUTION
Failure to obey a safety caution may result in a minor or
moderate injury to yourself or to others. Always follow the
safety precautions to reduce the risk of electric shock, fire or
personal injury.
Safety Mark Definitions
Following the WARNINGS and CAUTIONS in this manual will allow for the safe and
proper use of the soldering station, and should protect the operator from injury and
operators' property against damage.

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TAIYO ELECTRIC IND.CO.,LTD. 3
1Table of Contents
1. Table of Contents / Specifications......................................................................3
2. Introduction ...........................................................................................4
2.1 Features of the RX-852AS ..............................................................................4
2.2 Unpacking ...........................................................................................5
2.3 Name of Parts ...........................................................................................6
3. Rules for Safe Operation ......................................................................................8
4. Operating Instructions ....................................................................................... 10
4.1 Changing the Set Temperature...................................................................... 10
4.2 Calibration of the Tip temperature ................................................................ 11
4.3 Calibration Function....................................................................................... 12
4.4 Sleep Function ......................................................................................... 13
4.5 Setting the Shutdown Function ..................................................................... 16
4.6 Setting the Soldering-time Alarm.................................................................. 17
4.7 Setting the Temperature Range for the Alarm .............................................. 18
4.8 Control function for overshooting ................................................................. 19
4.9 Setting the Alarm Sound................................................................................20
4.10 Setting the Temperature Display ................................................................... 21
4.11 Key Lock Function .........................................................................................22
4.12 How to Restore the Default Setting............................................................... 24
5. Maintenance .........................................................................................25
5.1 How to Change the Tip ..................................................................................26
5.2 How to Change the Grip Rubber ..................................................................27
5.3 How to change the Fuse ................................................................................27
5.4 Housing Cleaning .........................................................................................28
5.5 How to Use and Maintain a Lead-Free Soldering Iron..................................28
6. Troubleshooting .........................................................................................29
7. Replacement Tips .........................................................................................30
8. Replacement Parts .........................................................................................32
9. Parameters .........................................................................................32
10. Soldering Iron Stand ST-21 Instructions..........................................................34
MODEL RX-852AS
Voltage 110–120, 220–240V AC
Power Consumption 145–170W
Soldering Iron Voltage / Wattage 24V AC/150W
Temperature Setting Range 50°C (122°F)—450°C (842°F)
Dimensions Soldering Unit 174mm (w/o cord bushing)
Control Unit 116(W) X 105(H) X 194(D) mm
Weight Soldering Unit Approx. 39g (w/o cord)
Control Unit Approx. 4.8kg (w/o cord)
Control Unit to Soldering Unit Cord Length 1.5m
AC Power Cord Length 1.5m 3 core cord (ground plug)
Leak Voltage Less than 2mV
Ground Resistance Less than 2Ω
Accessories Soldering Iron Stand ST-21
Specifications

TAIYO ELECTRIC IND.CO.,LTD.
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2Introduction
1. Excellent heat recovery (PAT.)
Excellent heat recovery has been achieved
by combining a 150W-compact-high-output-
heater with a high-sensitivity-sensor.
It makes difficult work that requires high heat
capacity, easy.
2.
New ergonomic design soldering unit (PAT.)
New ergonomically designed soldering unit
provides comfortable usability, easy handling
and a shorter distance from the grip to the tip.
3. Fastest in its class
Reaches 350˚C (662˚F) in 14 seconds.
4.
Easy to replace tip without using tools (PAT.)
With the new slide-change tip there is no
need for heat-resistant pads or tools when
changing the tip. After inserting a new tip, it
will not start to heat up until any key on the
control unit keypad is pressed.
5. RX-80HRT tips can also be used
More than 40 tips with different shapes are
available, including the optional tips for the
RX-802AS.
6. Thick iron plating for lead-free soldering
All tips have a thick iron plating to slow ero-
sion caused by lead-free soldering.
7. Key Lock function (PAT.)
Tamper-proof keypad lock using a password,
no tools or cards are needed.
8. Sleep function (PAT.)
The control unit automatically lowers the
temperature when inactive for a preset period
of time. This can also be done manually by
pressing and holding the ▼key for 1 second.
The sleep function can be used in conjunction
with the shutdown function.
9. Sleep function release (PAT.)
Sleep mode can be exited by touching touch-
ing the wet sponge with the tip to cause tem-
perature fluctuation.
10. Alarm function (PAT.)
When the soldering iron is left in contact with
the component being soldered past the time
set, this alarm sounds.
This function prevents inexperienced opera-
tors from overheating the component, helping
quality control.
11. Calibration function (PAT.)
The calibration function digitally offsets the
difference between the tip temperature and
the tip thermometer temperature.
12. Shutdown function
When the unit is not used for a preset time,
the unit enters shutdown mode automati-
cally, to prevent any unexpected accident.
Shutdown is released when turning the power
OFF and then ON again. Both the sleep func-
tion and the shutdown function can be used
together.
2-1 Features of the RX-852AS
The RX-852AS includes a compact, lightweight soldering iron with excellent heat recovery for
lead-free soldering. The tip is a long-life compact type with integrated heater.

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TAIYO ELECTRIC IND.CO.,LTD. 5
Packing List
■ Control Unit
■ Soldering Unit RX-85GAS
■ Soldering Iron Stand ST-21
■ Power Cord
■ Operation Manual
Please make sure that all the items listed below are included, and that the soldering station
(control unit and soldering unit) function properly. If any items are missing or damaged, please
contact your goot distributor. Please store the packaging for future shipment or repair.
2-2 Unpacking
RX-852AS
INSTRUCTION MANUAL
KEY
LOCK
RX-852
HEAT
SLEEP
TEMP. ˚C
AS
Control Unit
Soldering Unit
RX-85GAS
Operation Manual
Power Cord
Soldering
See instruction p. 34
Iron Stand
ST-21

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2-3 Name of Parts
1
0
KEY
LOCK
RX-852 HEAT
SLEEP
TEMP. ˚C
AS
Operation Panel
Output Terminal for
Soldering Unit
Power Switch
Power Cord Socket
(With built-in replacement fuse)
Tip (Sold separately)
Slide Lever
Grip Rubber
Soldering Unit
Connector
Grip Adapter
Rib to prevent mounting in
the RX-802AS soldering unit
Be sure to direction before
the tip is integrating.
[4-2] calibration of the tip temperature
is requires after attaching the tip.
Otherwise, there may be some difference
between the actual tip temperature add
the set temperature of the unit.
CAUTION

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1. HEAT lamp
Lights up when the heater is ON.
2. SLEEP lamp
Flashes while setting the SLEEP function.
Lights up when the unit enters the SLEEP mode.
3. TEMP display
When the power is turned ON or when SLEEP mode is exited, the TEMP
display shows the tip temperature rise to the set temperature.
The TEMP display shows the set temperature.
4. Alarm Lamp (to the right of the last digit in the temperature display)
Lights up when the tip temperature is within the DIF range.
Turns off when the tip temperature is out of the DIF range.
Flashes when the tip temperature is out of the upper and lower
temperature limits.
5. KEY LOCK lamp
Flashes while setting the Key Lock function.
Lights up when the Key Lock mode is set.
6. KEY LOCK key
Used to set the Key Lock function.
Used to lock and unlock the keypad.
7. SETTING key
This key is pressed when starting and completing the temperature
setting process. It is also used during the parameter changing procedure
to move to the next parameter and to complete the parameter setting
process by pressing continuously for 3 seconds.
8. DOWN key
This key is used to reduce the temperature and change the parameter.
9. UP key
This key is used to increase the temperature and change the parameter.
■Operation Panel
KEY
LOCK
RX-852 HEAT
SLEEP
TEMP. ˚C
AS
①
⑤
⑥
③
② ④
⑦ ⑧ ⑨

TAIYO ELECTRIC IND.CO.,LTD.
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3Rules for Safe Operation
1. DO NOT USE IN DANGEROUS ENVIRONMENTS.
Do not use the soldering station in damp or wet locations or expose it to
external environmental conditions, particularly rain. Never use it in an explosive
atmosphere. The heat from the heater can ignite fumes. Be sure that the work area
is well ventilated.
2.
KEEP CHILDREN AND BYSTANDERS AWAY FROM THE SOLDERING STATION.
Do not let bystanders touch the soldering station. All bystanders should be kept a
safe distance from the work area.
3. USE FOR THE RIGHT JOB.
Your soldering station is an electrical tool used to solder parts and melt solder. Do
not use the soldering station for any other purpose. For example: The soldering
station should never be used to warm water or other liquids.
4. WEAR PROPER APPAREL, SAFETY GLASSES, GLOVES AND MASK.
Do not wear loose clothing (such as a necktie). Tie up long hair. Clothing or hair
can burn on contact with the tip or surrounding heated parts.
5. CONNECT TO THE SPECIFIED AC POWER SUPPLY.
The power voltage for this soldering station is indicated at the back of the control
unit. Never plug the soldering station into any other voltage.
6. DO NOT ABUSE THE POWER CORD AND INSPECT IT PERIODICALLY.
Never yank the power cord to disconnect it from the receptacle. Keep the power
cord away from heat, oil and sharp edges. If it is damaged, contact the nearest
distributor to order a new one.
WARNING
The RX-852AS is an anti-static model. Be sure to
properly ground the soldering station using a grounded
receptacle to prevent electric shocks and anti-static. If
it is not properly grounded, electric shocks will occur. As
the soldering station uses conductive materials, please
be careful not to touch any electrical power source or a
serious injury will result.

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TAIYO ELECTRIC IND.CO.,LTD. 9
7. USE STAND PROVIDED.
Be sure to use the soldering iron stand (ST-21) included with the soldering station.
If this stand is not used, the plastic parts (adapter ring and/or soldering unit
housing) of the soldering iron unit could be damaged. Position the soldering iron
stand on a flat work-surface bench. Follow instructions in p.34.
8. CONCERNING THE TIP.
Allow the tip to cool naturally. Never use any other method to cool it down. For
example: Water should never be poured or sprinkled on the tip to cool it down.

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1
2
3
Key Operation TEMP Display
NOTE ) 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.
*The set temperature should be set at 50°C (90˚F) higher than the sleep
temperature (see the section 4-4), otherwise you will not be able to set the set
temperature value. (Example: If the set temperature is set at 200°C (392˚F),
the sleep temperature must be 150°C (302˚F) or lower.
4-1 Changing the Set Temperature
Displays flashes
➔Refer to the Parameters table (on page 33) for the explanation of the display
messages.
Press the key.
Setting completed
Press the
Press and hold the key until the
display shows 340.
key.
Example: Changing the temperature from 250°C (482°F) to 340°C (644°F).
When the station is shipped the temperature is set at 250°C (482°F). The temperature
can be set from 50°C (122°F) to 450°C (842°F).
*For the steps given in the operation instructions, only °C is used.
4Operating Instructions

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TAIYO ELECTRIC IND.CO.,LTD. 11
1
2
3
How to set the TIP No.
The temperature can be calibrated easily by inputting the tip number, which is engraved
on the tip. When changing to a different type of tip, the calibration of the tip temperature
is required before starting soldering work.
Key Operation TEMP Display
Returns to the set
temperature display.
4-2 Calibration of the Tip Temperature
Displays
alternately
Tip No. List
Press the key so that the tip
Setting completed
Press and hold the key for over
[L2] is displayed.
Displays
alternately
3 seconds continuously.
Press and hold the key for over
3 seconds continuously.
Example: When changing the tip used
from tip number L1, to tip number L2.
Tip No. List (RX-85HRT Series)
Tip No. List (RX-85HSRT Series)
MODEL TIP NO.
RX-80HRT-4.7C 0
RX-80HRT-0.8D 2
RX-80HRT-1.2D 2
RX-80HRT-1.6D 2
RX-80HRT-2.4D 1
RX-80HRT-3.2D 1
RX-80HRT-5.4D 0
RX-80HRT-3K 1
RX-80HRT-4.5K 1
RX-80HRT-4.5KH 1
RX-80HRT-5.5K 1
RX-80HRT-0.5C 3
RX-80HRT-1BC 1
MODEL TIP NO.
RX-80HRT-SB 3
RX-80HRT-B 1
RX-80HRT-2B 1
RX-80HRT-LB 2
RX-80HRT-LBJ 2
RX-80HRT-1C 4
RX-80HRT-2C 4
RX-80HRT-3C 2
RX-80HRT-3BC 1
RX-80HRT-4C 1
RX-80HRT-BM 1
RX-80HRT-2CD 4
RX-80HRT-2.3BC 1
RX-80HRT-3CD 2
MODEL TIP NO.
RX-85HRT-B L2
RX-85HRT-2BC L1
RX-85HRT-3BC L1
RX-85HRT-5BC L1
RX-85HRT-7BC L1
MODEL TIP NO.
RX-85HRT-3D L1
RX-85HRT-5D L1
RX-85HRT-7D L1
RX-85HRT-6K L1
MODEL TIP NO.
RX-85HSRT-B L2
RX-85HSRT-1.6D L1
RX-85HSRT-2.4D L1
RX-85HSRT-3.2D L1
MODEL TIP NO.
RX-85HSRT-2BC L1
RX-85HSRT-3BC L1
RX-85HSRT-4.5K L1
Tip No. List (RX-80HRT Series)
The above tip number (TIP No.) may be changed without notice, due to design changes, etc.
Be sure to check the actual engraved tip number of your tip (at the base).

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1
2
4
How to Calibrate
the Temperature
The RX-852AS can be calibrated using a tip thermometer. Generally speaking, when
measuring the tip temperature of the RX-852AS with a standard tip thermometer, the
measured temperature will usually be lower than that of the actual tip temperature
displayed on the RX-852AS control unit display. This could be because the tip is not
coming into contact properly with the sensor of the tip thermometer. It could also be
because once the tip thermometer comes into contact with the RX-852AS soldering
tip, the metallic parts in the thermometer conduct heat which transfers away from the
RX-852AS tip. This results in the thermometer indicating a slightly lower temperature
than the one in the RX-852AS display.
Key Operation TEMP Display
4-3 Calibration Function
3
(Example : Where the set temperature is 300°C (572°F),
tip thermometer value is 295°C (563°F), and the calibra-
tion value to be input is 5°C (9°F).)
Press the key once.
Press the key so that (˚C)
is displayed.
Displays
alternately
Displays
alternately
Displays
alternately
Returns to the set
temperature display.
Setting completed
Press and hold the key for over
3 seconds continuously.
Press and hold the key for over
3 seconds continuously.

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The sleep start timer (CT) function automati-
cally lowers the temperature of the tip after
a preset period of inactivity. This function
is exited by pressing any key on the control
panel. This function reduces power consump-
tion and helps extend soldering tip life. The
sleep function can be used with the shut
down function.
4-4 Sleep Function
CT
SST
Soldering tip temperature
Set temperature
Sleep start
DIF
Operation
DIF (Sensitivity)
Power ON Time
(Sleep start time)
(Sleep setting temp.)
1
2
4
Setting the Sleep
Temperature (SST) Unit: °C
Key Operation TEMP Display
Set to 200°C (392°F) before shipping.
Example : Changing the sleep temperature
from 200°C (392°F) to 150°C (302°F).
3
Returns to the set
temperature display.
Displays
alternately
Displays
alternately
Displays
alternately
Press and hold the key for over
3 seconds continuously.
Press the key twice.
Press the key, until the display
Setting completed
Press and hold the key for over
3 seconds continuously.
changes to 150.
While setting the sleep function, the sleep lamp will flash. The flashing of the sleep lamp will become
faster 30 seconds before entering Sleep mode. When the soldering station has entered Sleep mode,
the sleep lamp will change from flashing to continuously lit, and the display will alternate between “SLP”
and the temperature. To use sleep function manually during operation, press and hold the ▼key for 1
second continuously. Whenever the power switch is turned ON, the soldering station will automatically
enter the Sleep mode either in 10 minutes or in twice the set sleep time (CT), whichever time is longer,
if no soldering is done. However, if soldering is started or any key is pressed on the control panel, the
soldering station will automatically revert to the set sleep start time.
The sleep function is exited when the tip is brought into contact with the tip cleaner or wet sponge.
However, this method cannot be used if the sleep temperature (SST) is set below 100 °C because there
will be very little temperature fluctuation. Sleep mode can be exited by pressing any key on the control
panel.

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1
2
4
Setting the Sleep start
time (CT) Unit: mins.
Key Operation TEMP Display
3
By setting the CT (Sleep start time) to 0.00, the sleep function will be turned off and the
SLEEP lamp turn off.
Set to 5 minutes before shipping.
Example : Changing the sleep start time from 5 to 10 minutes.
Displays
alternately
Displays
alternately
Displays
alternately
Returns to the set
temperature display.
Press and hold the key for over
3 seconds continuously.
Press the key three times.
Press the key, until the display
Setting completed
Press and hold the key for over
3 seconds continuously.
changes from 5to 10.

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1
2
4
Setting the Sleep
Sensitivity (DIF) Unit : °C
Key Operation TEMP Display
3
Example :Changing the sleep sensitivity value from
2.0 to 3.0 ˚C.
Press and hold the key for over
3 seconds continuously.
Press the key four times.
Returns to the set
temperature display.
Press the and change the display
from 2.0 to 3.0.
Setting completed
Press and hold the key for over
3 seconds continuously.
Displays
alternately
Displays
alternately
Displays
alternately
NOTE )
*If the sleep sensitivity value (DIF) is set too high, there is a possibility that the
sleep function will be activated even during soldering. If this happens, reduce the
sleep sensitivity value.
*Sleep sensitivity value (DIF) can be set anywhere between 0°C (0°F) and 20°C
(36°F).
*If the sleep sensitivity value (DIF) is set too low, there is a possibility that the
sleep function will not be activated even passed sleep start time. If this happens,
increase the sleep sensitive value

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When the unit is not operated during the preset time, the unit is automatically shutdown.
Even if the user forgets to turn OFF the unit, this Shutdown function works to keep the
unit inactive and prevents accidents.
4-5 Setting the Shutdown Function
CT SUT
DIF
Power ON Time
Soldering tip temperatrue
Operation
(Shutdown start time)
Power OFF
Sleep setting temp.
Set temperature
(Sleep start time)
DIF (Sensitivity)
When using together with Sleep function.
SUT Power OFF
Soldering tip temperatrue
Set temperature
Power ON Time
Operation
DIF
DIF (Sensitivity)
(Shutdown start time)
1
2
4
Key Operation TEMP Display
3
When the SUT (Shutdown Start Time) value is set to 0, the shutdown function is OFF.
When the unit enters shutdown, the Sdn and the temperature are displayed alternately.
After the temperature drops below 50°C only the LED to the right of the last digit on
the TEMP display remains lit. To use the unit again after shutting down, turn the power
switch OFF, wait a few seconds, and then ON again to operate the unit.
Example : Changing the Shutdown start time
from 60 to 30. Unit : mins
Press and hold the key
for over 3 seconds continuously. Displays
alternately
Displays
alternately
Displays
alternately
Press the key, until
the display changes to 30.
Press and hold the key
for over 3 seconds continuously.
Setting completed
Returns to the set
temperature display.
Press the key five times.
Setting the Shutdown
start time (SUT)

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The RX-852AS sounds an alarm, when the soldering iron is left in contact with the
component being soldered past the time set. This function prevents inexperienced
operators from overheating the component.
4-6 Setting the Soldering-time Alarm
1
2
4
Key Operation TEMP Display
Example : Changing the soldering time from
0 to 1.5. Unit : seconds
Press and hold the key
for over 3 seconds continuously.
Displays
alternately
Displays
alternately
Displays
alternately
Press and hold the key
for over 3 seconds continuously.
Setting completed
Returns to the set
temperature display.
Press the
Press the
key 6 times to
display "At".
key,
Setting the soldering start
time
Tip temperatrue
Power ON Time
Set
temperature
AT: Setting the soldering time
AT
DIF
DIF
① ② ③
(1) RX-852AS starts the soldering-time count
down, when the tip temperature exceeds the set
parameter.
(2) The alarm sounds after the soldering-time
preset is reached. The display will also flash
twice at this point.
(3) Lift the tip from the component being soldered
when the alarm sounds.
To turn off the alarm function, set the
preset time value at 0.3 or less, and
then [---] is displayed.
3
until the display changes from --- to 1.5.

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2
4
Setting the alarm range
Key Operation TEMP Display
The upper limit and the lower limit are set to
50˚C respectively, before shipping
3
Display “H” or “L”, by
pressing the key.
key.
Returns to the set
temperature display.
Setting completed
Press and hold the key for over
3 seconds continuously.
Displays
alternately
Displays
alternately
Displays
alternately
Displays
alternately
Upper Temperature Limit
Change the preset temperature by
pressing the
Lower Temperature Limit
Upper Temperature Limit
This function indicates to the operator
with the sound of the alarm, when
the tip temperature goes past the set
parameter. The illustration on the right
shows when the alarm will sound: The
diagonal lines represent outside the
temperature parameters.
The alarm can be set from 3 to 100˚C,
for the upper limit and the lower limit
respectively. To turn off this function, set the preset value at 3 °C or lower, for the upper
limit and the lower limit respectively. The display will then show [---].
4-7 Setting the Temperature Range for the Alarm
Lower limit temp.
Set temperature
Upper limit temp.
L H
1Press and hold the key
for over 3 seconds continuously.

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2
Setting the differential time (td)
Press the [SET.] key
to select [td] .
Key Operation TEMP Display
Example : Changing the differential time from 5to 30.
After soldering, the tip temperature may increase to higher than the set temperature
depending on the tip type or the kind of work. (Overshoot)
“Overshoot” will often occur when using the RX-85HSRT, but “Overshoot” can be con-
trolled by setting the parameters.
4Press down the [SET.] key
for over 3 seconds.
3Press the [UP] key to
set to 30.
Tip type Differential time
RX-80HRT series 5
RX-85HRT series 5
RX-85HSRT series 30
Standard of the differential time
Returns to the set
temperature display.
Setting completed
Displays
alternately
Displays
alternately
Displays
alternately
4-8 Control function for overshooting
1Press and hold the key
for over 3 seconds continuously.

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1
2
4
Setting the alarm sound
This setting switches the alarm ON and OFF. The initial setting is ON (the alarm sounds).
Set to OFF for mute (no sound).
Key Operation TEMP Display
4-9 Setting the Alarm Sound
3
Setting completed
Returns to the set
temperature display.
Press and hold the key
for over 3 seconds continuously.
Press the key ten times.
Press the key to set to ON.
Press the key to set to OFF.
Press and hold the key
for over 3 seconds continuously.
Displays
alternately
Displays
alternately
Displays
alternately
Displays
alternately