22
●
The low-temperature
alarm tolerance error
occurs frequently.
CHECK
: Is the setting value for the low-temperature alarm tolerance
too low?
ACTION
: Increase the setting value.
●
Heater terminal short
circuit error
is
displayed.
CHECK
: Is the nozzle cartridge for MODEL FM-2024?
ACTION
: Turn the power switch OFF and insert the MODEL FM-2024
tip. Turn the power switch ON.
●
Solder cannot be
removed.
CHECK
: Is the heat insufficient?
ACTION
: Higher heat may be required for large projects. Perform
soldering operation while preheating the work. Increasing
the nozzle temperature indiscriminately can damage the
work. Use an appropriate temperature.
CHECK
: Is it difficult for solder to stay on the nozzle tip?
ACTION
: See “Maintenance of nozzle” and “The nozzle end does not
extract solder”.
●
Suction power is
dropping.
CHECK
: Is oxide adhering to the nozzle or inside the suction pipe?
ACTION
: See “Maintenance of nozzle” and “Cleaning the inside of
suction pipe”.
CHECK
: Is a piece of removed solder stuck in the filter pipe?
ACTION
: If removed solder is clogging up 70 to 80 percent of the
filter pipe, replace the filter pipe. Also replace the filter pipe
after suctioning large amounts of flux or when the ceramic
filter hardens.
CHECK
: Is solder residue stuck between the front holder or back
holder bushing and the contact surface of the filter pipe
assembly?
ACTION
: See “Check and clean the front and back holder bushings”.
CHECK
: Has the ceramic paper filter deteriorated?
ACTION
: The ceramic paper filter is full of flux, thereby reducing the
suction power. See “Checking and replacing the ceramic
paper filter”.
