Xytronic LF-3500 User manual

INSTRUCTION MANUAL
FOR
LF-3500
High Frequency
Soldering Station

1
INTRODUCTION
Thank you for purchasing Xytronic’s high heat capacity soldering station – the best
solution for your soldering equipment needs especially for lead free applications! We
believe that you will be more than satisfied with many features and the versatility of
your new soldering station Please carefully read the instruction manual prior to
operate to maximize the advantages of using your new soldering station
W RNING: This appliance is not intended for use by children or other persons
without assistance or supervision if their physical, sensory or mental capabilities
prevent them from using it safely Children should be supervised to ensure that they
do not play with the appliance Failure to observe the safety regulation will result in a
risk to life and limb The manufacturer shall not be liable for damage resulting from
misuse of the unit or unauthorized alterations
C UTION:
When power is ON,tip temperatures will be between 100-480
00
0℃
℃℃
℃.To avoid
.To avoid .To avoid
.To avoid in
inin
injury
jury jury
jury
or damage to personnel and items in the work area,
or damage to personnel and items in the work area,or damage to personnel and items in the work area,
or damage to personnel and items in the work area,read
readread
read the
the the
the below
below below
below
carefully
carefullycarefully
carefully:
::
:
◆ Do not touch the tip ,heating element or the metal parts near the tip
◆ Do not allow the tip to come close to ,or touch,flammabe materials
◆ Inform others in the area that the unit is hot and should not be touched
◆ Turn the power off when not in use,or left unattended
◆ Turn the power off when changing parts or storing the LF-3000
◆ Always place the soldering iron in its original holder when not being used
◆ For your health, do not inhale solder fumes
◆ You must not undertake work on live parts Only the technician is permitted to
undertake repairs Use the original replacement part only
NOTE:The station can be set the temperature between 100-480℃
℃℃
℃/.With the
/.With the /.With the
/.With the
high power and great recovery,the station should set in the very high
high power and great recovery,the station should set in the very high high power and great recovery,the station should set in the very high
high power and great recovery,the station should set in the very high
temperature,we do not
temperature,we do not temperature,we do not
temperature,we do not recommend set the temperature over the 480℃
℃℃
℃ to
extend the tip’s life.
KEY FE TURES
◆ HEATER/SENSOR FAILED DETECTION: If sensor circuit failed that the
display read “S--E” and cut off the heater power If heater circuit failed the display
read “H--E” and cut off the heater power
◆ TEMPERATUE “LOCK-OUT” FEATURE: The temperature can be locked by
“password” code that is convenient for production line management
◆ HIGH POWER ,GREAT RECOVERY: With the 90W high power, great thermal
recovery improves the soldering environment, It can shorten the soldering

2
working time, which minimize concern about the influence of heat on components
and tip life
◆ ENERGY SAVER: If the station is set to the auto sleep function setting mode ,
after the station has been idle for more than 20 minutes, this new feature will
automatically knick in the energy saver feature has engaged, decreases tip
temperature and extends tip life
◆ ISOLATED IRON HOLDER WITH TIP CLEANER: Made of low abrasive
brass shavings instead of conventional sponges to meet RoHS requirement cleans
better and no water is necessary
◆ LOW VOLTAGE OUTPUT WITH SAFETY OPERATION: The power unit is
isolated from the A C line by a transformer and allows 36Vac to drive the heating
element Solder wand runs from 36 Volts for safety and with 90W high power
PTC heater for a super-fast heat-up and quick temperature recovery The solder
wand is attached with heat resistant, non-burning, flexible 6-wire cord
◆ ESD SAFE AND SPIKE FREE CIRCUITRY: The “Zero Voltage” electronic
switching design also protects voltage and current sensitive components (CMOS
devices, etc ) against damaging current and transient voltage spikes commonly
produced by less efficient, mechanically switched stations
◆ DETACHABLE AC POWER CORD WITH PLUG: Engineered AC outlet for
alternating AC power cord with plug and connector specially designed for
individual CE countries requirements
◆ EARTH JACK: With a grounding connector, there is the possibility for a
grounding of the wire strap if required
PRODUCT DESCRIPTION
LF-3000 electronically high frequency soldering station with specially
intelligent chip microcomputer control designs was developed to meet the present and
future Lead-free soldering needs of the electronic production industry and suitable for
work on professional SMD electronics An ergonomic handle with shorter distance
between heating element and tip gets very fast heat up time and quick heat
compensation A high-quality sensor and heat transfer technology ensure precise
temperature regulation is essential for making consistent, reliable soldered
connections The aluminum housing has the advantages of strong structure, good heat
sink and effectively resistant of electro-magnetic interference It provides all the
benefits of temperature regulation and connects via a highly flexible burn-resistant
lead, and can be easily adjusted in temperature

3
The LF-3500 incorporates electronic circuitry which enables the user to alter tip
temperature from 100 to480℃without changing tips or heating elements Also, with
digital display readout and pressing keys on the front panel get clear vision and
comfortable setting The temperature is maintained within +/-3℃ of its operating
temperature by a thermocouple sensor placed in the head of the heating element,
allowing the tip to rest against the sensor The 150W power results in both a rapid
heat-up and super fast recovery
The revolutionary “Zero Voltage” electronic switching design also protects voltage
and current sensitive components (CMOS devices etc ) against damaging current and
transient voltage spikes commonly produced by less efficient, mechanically switched
stations The power unit is isolated from the A C line by a transformer and allows
only 36Vac to drive the heating element The temperature “Lock-out” feature by
“password” is convenient for production management The many features of the
product make it the ideal tool for service and repair technicians as well as production
line soldering operations This unit is developed to meet the present and future
lead-free soldering needs of the electronic production industry and is ideal for use at
any AC outlet
BRIEF INTRODUCTION OF P NEL FUNCTIONS:
Front panel
○
1Temperature display readout
○
2 Heat indicating light
○
3 “SET”: Function key
○
4 “▼”: Down key
○
5 “▲”: Up key
○
6 Solder wand socket
○
7 Main power switch

4
Rear side
○
8 C Power cord in-let
○
9 Fuse
○
10
Earth Jack
Fig. 1 Soldering iron introduction
Heating element :With the
high-frequency heating ,get the
rapid heat up time and great
recove
ry
Sensor: Ahead of the
tip , greatly sense the
temperature
Tip: separated part, can
be easily replace

5
SPECIFIC TIONS:
Model LF-3500
Input 220-240Vac 50Hz 100-120Vac 60Hz
Output 36Vac/150W
Fuse (Slow type) T2A T5A
Temperature Range 100℃～480℃
Temperature Correction
Range +99℃~-99℃
Default Set
100℃
No Password
Temperature correction value“00”
Degrees Centigrade
Figure Dimension 111x158x137mm(W x H x D)
Weight (Unit only) 2 2g
WORKING TEMPER TURE
To meet RoHS requirements, the 60/40 solder alloys are not allowed in the production
process The lead free solder alloys require a working temperature of 30℃ higher than
previous generation electrical soldering The working temperature of solder is detailed
below and can vary from manufacture to manufacture
Melting point 220℃
Normal operation 300-360℃
Production line operation 360-410℃
When the iron’s working temperature is set within the parameters suitable for the type
of solder being used, a good joint is assured Too low of a temperature will slow the rate
of solder flow while a high temperature setting might burn the flux in the solder and
emit a heavy, white smoke resulting in a dry joint or permanent damage to the printed
circuit board (P C B ) and may also shorten the tip life
IMPORT NT: The temperature above 410℃ is not recommended for normal
soldering functions, but can be used for short periods of time when high temperatures
are required Please note that the lead free solder alloys require a higher soldering
temperature which shortens tip life
OPER TING INSTRUCTIONS
● Ensure that the working voltage matches your power supply before beginning use
● Check carefully for any damage during transportation
● This unit contains:
1 Solder wand
2 Iron holder with brass tip cleaner
3 AC power cord with plug

6
OPER TING PROCEDURES:
1 Ensure that the base unit power switch is in the “OFF” position
2 Plug in Solder wand and connect AC power cord to mains “In-let”
3 Turn “Mains power switch” to “ON” position
4 Press the “▲” key up until the temperature to 250℃ Then tin the surface of the tip
by applying a new covering of solder after being warmed to protect tip and extend
its life
5 When the temperature reaches to the desired temperature that the heating indicator
light will be flashed on and off to maintain the set temperature The unit now is
ready for use
C UTIONS:
REMEMBER, THE TIP IS HOT!
- The tip and barrel of the solder wand will cause serious burns if they are allowed to
contact skin Always return the solder wand to the safety holder after each use
DO NOT WORK ON LIVE CIRCUITS
- Before working on any mains powered equipment, make sure that it is turned off,
and the mains plug is removed from the power point
DO NOT USE IF D M GED
- If the power lead becomes damaged or the soldering station becomes faulty,
discontinue use immediately To comply with safety standards, the power lead must
only be replaced by authorized technicians as special purpose tools are required
DO NOT MODIFY THE LF-3500
Caution: Soldering irons operate at high temperatures and can easily burn people
or objects. Do not touch the tip and heater at any time and keep it a safe
distance from flammable materials while the unit is on or while it’s cooling.
Please allow a sufficient time for it to cool before changing tips or servicing the
unit!
FUNCTION INTRODUCTION
TEMPER TURE SETTING: (No password set)
1 Increase temperature: By pressing “▲” key one time, the digital will be increase “1”
numeral If pressing “▲” key over 2 seconds then the digital numerals will be
forwarded counting continuously till the temperature up to what you desire to set
2 Decrease temperature: By pressing“▼” key, the same procedure as above
P R METER SETTING:
1 Press “SET” key and hold for at least 4 seconds until display shown “— — —”
sign then release the “SET” key The sign “— — —” starts to flash and reminding
the user to input the mode lock password “010” (fixed) If the user inputs the same

7
number as “010”, the unit will enter the modes selection procedure, otherwise, the
unit will be back from the current mode automatically
2 After the unit enters the Modes selection, the LED will display “F-0”and flash
Press “▲”or “▼” key to select modes If the user doesn’t press “▲” or “▼” key
within 15 seconds or press “SET” key one time, then the unit will be immediately
back from the Parameter Set status
For example: F-0 → F-1 → F-2 → F-3
↑ ↓
← ← ← ←
3 Password Setting:
When the LED displays “F-1” and flashes, press “SET” key one time and the unit
enters the Password Set status At this moment, the LED displays the pre-set value
Press “▲” or “▼” key to change password set value If the user sets “000” that
means the unit will be under the status of no password If the user sets “100” then
means the unit will be under the password status Press “SET” key once to finish
password setting and the unit will backup mode, the user can continue set other
modes or back from the setting mode
4 Temperature Correction Setting
Press “SET” key once when the LED displays “F-2” and flashes that the unit enters
the Temperature Correction Mode At this moment, the LED displays preset
correction value
A: Operation of Centigrade temperature correction（Range +99℃~-99℃）
Press “▲” or “▼” key to change the temperature correction value The first digit
“— ” in LED display means minus (actual temperature is down), “No display”
means plus (actual temperature is up)
Example for temperature correction:
The current set temperature value is 300℃, however, the actual temperature is only
290℃ So it needs to correct by +10℃ Correction method: if the current correction
value is 00 or -00; then change it to 10 If the current correction value is -20, then
change it to -10 If the current correction value is 20, then change it to 30
5 Sleep Mode Set
Press “SET” key one time when the LED displays “F-3” and flashes, the unit enters
the Sleep mode status At this moment, the LED displays the pre-set value Press
“▲” or “▼” key to change the set value If set value reads “000” that means the unit
set in “Sleep” mode releasing status If the display read “100” that means the unit
set in “Sleep” mode Press “SET” key once to finish the sleep mode setting, then the
unit automatically backup The user may continue set other modes or back from
current set mode

8
Please note the manufacturer original design will keep in “Free” status without
setting “Sleep” mode
6 Wake-up method
① Temperature Down Suspend: If the unit is set in Sleep mode function, after 20min
idleness, the system will enter the sleep mode automatically, the temperature will go
down to 100℃ and the LED displays at “ 100” and flashes. Activating the solder
wand will disengage the suspend status and the unit will immediately ramp up to the
preset temperature There are three methods of wake-up the Temperature Down
Suspend
a Pick up the solder wand and shake it gently
b Press any key of the unit
c Turn off the main switch and restart
○
2
Power off Suspend: If the unit enters the Sleep mode over 40min without wake-up,
the unit will enter automatically the power off suspend status It means the heater power
will be cut off and the LED displays “— — —” and flashes, you have to turn off the
main switch restart the station when you reuse the iron.
COMMON C USES OF TIP UNWETTING
1 Tip temperature higher than 410℃
2 The tip working surfaces are not tinned while the iron idling
3 Lack of flux in soldering, wicking, repairing, and touch-up operations
4 Wiping the tip on a high sulfur content, dirty or dry sponges and rags
5 Touching with organic substances such as plastic, resin, silicone, grease or other
chemicals
6 Impurities in solder and/or low tin content
C RE OF TIPS
Caution: The soldering iron can reach very high temperatures Be sure to turn the
unit off prior to carrying out any maintenance or trouble shooting steps listed below
IMPORT NT
Remove the tip and clean after moderate to heavy use or at least daily for light usage
Remove any loose build up in the tip retaining assembly to prevent tip freezing
The solder tips supplied are iron clad cooper and if used properly, they should maintain
optimum life
1 Always tin the tip before returning it to the holder, turning off the station, or storing
it for long periods of time Wipe the tip on a brass cleaner prior to use
2 Keeping the iron set at high temperatures (more than 400℃ ) will shorten tip life
3 Does not use excessive pressure to the tip or rub the joint with the tip while
soldering; it does not improve the heat transfer and may damage the tip

9
4 Apply solder to the joint, not the tip when soldering The flux is naturally caustic
and thus will eat away the tip
5 Never clean the tip with a file or abrasive materials
6 Do not use fluxes which contain chloride or acid Use only rosin or resin activated
fluxes
7 If an oxide film forms on the tip, it can be removed by careful buffing with a
600-800 grit emery cloth, isopropyl alcohol or equivalent and then wrapping rosin
core solder around the newly exposed surfaces Coat the tinned areas with rosin-core
solder after the resin-core has melted
NEW TIPS
Applying the following steps will lead to optimum life
1 Set temperature to min then turn the main power switch to the “ON” position
2 Coat the tinned surfaces with rosin-core solder after reaching 250℃
3 Set to desired temperature after allowing the unit to idle at 250℃ for 3 minutes
4 The iron will be ready for use once it reaches the preset temperature
IMPORT NT: Remove and clean the tip daily If a new tip is installed, remove any
loose build up in the barrel assembly, otherwise the tip may fuse to the heating element
or retaining barrel
M INTEN NCE
TIP MAINTENANCE AND DRESSING
Tips can be changed or replaced simply by unscrewing the knurled nut barrel assembly
The station must be switched off and allowed to cool before this operation as damage
may result if the system is left on without the tip in place!
After removing the tip, blow out any oxide dust that may have formed in the tip
retaining area of the barrel Be careful to avoid getting this dust in your eyes Replace
the tip and screw back the knurled nut barrel assembly using only firm hand pressure to
tighten Pliers should only be used to tighten the nut to avoid burning your fingers, but
care should be taken not to over-tighten as this could damage the element
GENER L CLE NING
The outer cover of the iron and station may be cleaned with a damp cloth using small
amounts of liquid detergent Never submerse the unit in liquid or allow any liquid to
enter the case of the station Never use any solvent to clean the case
SERVICE
If the iron or station should become faulty or, for some reason not operate normally, the
system should be returned to the service department of your authorized dealer or service
agent Or a similarly qualified person in order to avoid a hazard

10
INTERCH NGE BLE TIPS