multicomp pro MP740888 User manual

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Soldering Station 80W
User Manual
Part Number: MP740888

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Model No. MP740888
Total Power 80W
Main Unit
Output voltage 25V AC
Temperature range 150°C to 550°C (302°F to 1022°F)
Temperature stability ±1°C ±1.8°F {>200°C (400°F)}
Dimension 148mm × 120mm × 85mm
weight(power cable excluded) 1.3kg
Iron
Power consumption 75W
Tip to ground impedance <2Ω
Tip to ground voltage <2mV
Heating element Integrated tip
Cable length 1.2m
Weight 68g
Note: specications and appearance are subject to change for product improvement
without prior notice
Safety and Precautions
The precautions in this manual are divided into the following [warning] and [attention].
Please fully understand the content.
Warning: misuse may cause death or serious injury to the user

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Note: misuse may cause injury to users or substantial damage to objects involved
For your own safety, please strictly abide by the following precautions
Warning
When power is on, the temperature of the soldering iron tip might reach to 150°C to 550°C (302°F to 1022°F) .
Misuse may cause burns and re, please strictly observe the following precautions:
• Do not touch the soldering iron tip or the metal part around it while using
• Do not use it around combustibles
• Inform the people around of the potential risk caused by high temperature
• Turn the power o󰀨 when not in use
• Before replacing parts or tip, turn o󰀨 the power and wait till the iron tip cools down
• Do not use this product if you are inexperienced or have no su󰀩cient necessary knowledge without the guidance of related
qualied personnel
• Please keep it out of reach of children
• If the power cord is damaged, please ask the manufacturer or its service agent or similar qualied personnel to repair it, so
as to avoid personal injury or damage to product
Please strictly observe the following precautions, otherwise it may cause injuries or death
• Do not use this product for any task other than soldering
• Do not hit the handle hard for removing the tin on the iron tip
• Do not modify this product
• When replace parts, only use original Multicomp-pro parts
• Do not use in damp conditions or use it with wet hands
• Unplug it from the mains supply after using
• Smoke may be emitted during soldering, please use it in well ventilated area
• Do not engage in other dangerous acts with this product
Using Method
1.Operation and display instructions
Panel display:
LED segment : digital display
Indicator : indicates the statement of heater (light on/o󰀨 means power on/o󰀨)
Function key : function operation
Knob : to adjust temperature
Calibration hole : for calibrate the temperature

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2.Turn on the power switch
After switching on, indicator lights up and LED segment displays for 1 second, now power is on. And then it displays
the temperature unit or for 1 second, so you know which unit is used right now. If the standby function is
enabled in this soldering station, will be displayed for 1 secondd to show standby function is available. Then displays
the set temperature for 1.5 seconds, and nally displays the real time temperature. When the temperature is stable, indicator
will ash.
Note: when not in use, please put the soldering iron on the holder. If it won’t be used for a while, please switch o󰀨 the power
supply.
3.After use
After use, please clean the soldering iron tip and apply new solder on it.
4.Temperature unit conversion
First press function key and simultaneously switch on the power, until the LED segment displays , release the function
key and the unit will switch from Fahrenheit to Celsius, or vice versa.
5.Temperature adjustment
Temperature range
MP740888: 1 50°C to 550°C (302°F to 1022°F, note: as LED segment shows only 3 digits, 1022 will be displayed as A22, “A”
represents digit “10”)
Temperature is adjusted using the rotary control.
6.Screen brightness setting
1) Press and hold the function key till the the screen displays , to enter the brightness setting.
2) Show the current digital display brightness level -
3) Adjust the brightness level through the rotary control: gear 1-6.
4) Press the function key or wait for 10s to automatically save to complete the setting.
7.Standby and sleep functions
Standby function on and o󰀨:
1) Press and hold the function key till display on LED segment to enter the standby function on/o󰀨 setting:
2) Display the current setting or
3) Adjust by knob: or to turn on/o󰀨 the standby and sleep function.
4) Press the function key or wait for 10s to automatically save to complete the setting.
Standby function
1) When standby function is turned on, the soldering station will enter standby mode after not in use for 10 minutes.
2) In standby mode, LED segment displays and temperature drops to 250°C (482°F).
3) When any operation is detected, such as using the soldering iron, rotary control or pressing the function key, it will return to
the work mode.
4) When in standby mode, if no further operation is detected for 10 minutes, it will enter sleep mode.
Sleep function:
1) That short press the function key or long time in standby mode can make it enter sleep mode:
2) When entering sleep mode, screen displays and heating is turn o󰀨.
3) Press the function key to return to normal heating work mode.

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8.Temperature locking function:
Temperature locking function on and o󰀨:
1) Turning the rotary control to adjust the temperature to be set.
2) Long press the function key till is displayed.
3) Now LED segment displays or
4) Turn the control to set the locking function to be or
5) Press the function key or wait for 10s to automatically save to complete the setting.
6) When the temperature is locked, adjusting the control does not change the setting temperature, it will display for 1
second to show that the current temperature is locked.
9.Temperature calibration
1) Adjust the set temperature to 350°C (662°F) byr otary control and wait for 2 minutes to stabilize the temperature.
2) Use a thermometer to measure the temperature of the soldering iron tip.
3) Use a cross screwdriver to adjust the calibration hole to make the displayed temperature value equal to the measured
value. For example, if the measured value is 345°C, adjust calibration hole to reduce display temperature 350 to 345,
make the display temperature match the measured value.
4) Press the function key to complete calibration.
Maintenance
In order to make this product durable, please maintain it regularly. The lifespan of this product depends on the
used temperature, quality of solder wire and soldering paste, frequency of use etc. Please repair and maintain
it according to specic use conditions.
Warning
Please pay close attention when the soldering station is in use at high temperature, turn o󰀨 the
power and unplug the power cord after use.
Soldering iron tip maintenance
1. Set the temperature to 250°C (480°F) .
2. After the temperature is stable, clean the soldering iron tip with a brass wool and check its condition.
3. If black oxide is attached to it, please apply new solder (including ux) and wipe it repeatedly with a brass wool until it’s
clean, then apply some new solder.
4. If the soldering iron tip has been damaged, misshaped or worn out, please replace it with a new one.
Troubleshooting Guide
Warning
When checking or replacing parts, be sure to pull out the power plug to prevent electric shock
● If the power cable is damage, it must be sent to the manufacturer, agency store or maintenance
personnel with the same qualication for repair to avoid accidents

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Fault To Check Fix
Not working after
power is on
Check whether the power cord is properly
connected and the power turned on Connect the power supply properly
Check the fuse
Work out the cause of fuse damage:
1. Short circuit inside the station.
2. Inside the handle, the spring might meets the
heating element.
3. Check whether the pin of heating element is
twisted or short circuited.
Even if the cause is unknown, please replace the
fuse. If the fuse get burnt out again, please return
the handle with the main unit for maintenance.
The display shows “S-E”
Whether the iron cable is well connected
with main unit Reconnected
Whether the wire connecting to iron is
damaged If so please replace it with a new handle
Whether the heater is damaged (the
resistance of the blue lead wire shall be
less than 100 Ω at room temperature).
If damaged, replace the heater
The display shows “H-E”
Whether the wire connecting to iron is
damaged If so please replace it with a new handle
Whether the heater is damaged
(the resistance of the red lead wire shall
be less than 100 Ω at room temperature)
If damaged, replace the heater
Iron tip heating is on
and o󰀨
Whether the wire connecting to
handle is broken If so please replace it with a new handle
The solder won’t tin on
the iron tip
Check whether the temperature of
the iron tip is too high Adjust to the proper temperature
Check whether there is oxide on the tip Clean the oxide with a brass wool
Iron tip temperature is
too low
Check whether there is oxide on the tip Clean the oxide with a brass wool
Whether the temperature is proper Adjust to the proper temperature
The iron tip won’t t
Whether there is oxide inside tip, or
soldering iron tip expands Change the tip and heater
Incorrect tip or not same type tip use original factory tip or same type tips
The iron cannot reach
the set temperature
Is the temperature adjusted correctly Adjust the set temperature again
Haven’t done temperature calibration for
a long time Re-calibrate temperature accordingly

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Important Notice : This data sheet and its contents (the “Information”) belong to the members of the AVNET group of companies (the “Group”) or are licensed to it. No licence is granted for
the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change
without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness,
any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make
any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or
where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its
negligence. Multicomp Pro is the registered trademark of Premier Farnell Limited 2019.
Replacement soldering tips