12
7.
MAINTENANCE
Although blades are designed to resist oxidation, if oxidation of
the blades occurs and prevents you to do wire-stripping work
smoothly, use a wire brush lightly on the blade to remove the oxide.
Applying a wire brush strongly may damage the blades, resulting in
reduced service life. Therefore, do not brush blades excessively.
Leaving the unit in a no-load condition for a long time with the blade
heated highly may cause the surface to be oxidized, resulting in
reduced service life of blades due to overload applied to the heating
element.
Be sure to enable auto sleep and place the handle on the handle holder
when not using it.
Be sure to switch off the power switch if the unit will not be used for a
long time.
About blades
1. Maintenance
2. Suspension during use
1. Blown heating element
2. How to check whether the
connection cord is
connected or disconnected
3. How to replace the fuse
Check that no electrical abnormality occurs in the heating element.
Measure the resistance at normal temperature (15 to 25℃/59 to 77℉
).
The normal value is 3.5 Ω ±10
％
If the measured resistance value is
abnormal, replace the blade with a new one.
Measure the resistance of this section of the heating element.
Attach normal blades (whose resistance value of heating elements is
normal) to both handles and measure the resistance value between
the connector pins.
Resistance between Pin 1 and Pin 5: 6.2 Ω to 8.0 Ω
If the resistance value is outside the above value range, replace
the HAKKO FT-8004 with a new one.
1. Unplug the power cord from the inlet.
2. Pull out the fuse holder.
3. Replace the current fuse with a new one.
4. Reassemble the fuse holder to its original condition.
1
5
WARNING
Unless otherwise specified, be sure to switch off the power and unplug the power plug when
performing the following procedures.
The unit should be maintained periodically to be able to use it in proper condition for a long
time. Since the degree of consumption of the unit varies depending on the use temperature,
etc., perform maintenance of the unit according to use conditions.
WARNING
Since the unit can reach a very high temperature, please work carefully. Except for special
cases, always turn the power switch OFF and disconnect the power plug before performing any
maintenance procedure.
8.
INSPECTION
