Maintenance of the pump head
● Remove the cover
When performing maintenance on the pump head, remove the screws holding the cover
and take the cover off.
● Cleaning the pump head
1. Remove the valve and valve guard and remove any attached flux.
Pump head
CAUTION
• When the valve guard is difficult to remove,
please warm it with hot air. Please do not try
to forcibly remove it with a screwdriver, etc.
If the valve guard becomes deformed, it will
no longer be airtight.
• Please clean with either alcohol or thinner.
Valve
Valve
guard
Pump
head
Pump
head
Valve
Valve
guard
Pump head disassembly
* It is resting on its side.
Clean the pump head,
valve and valve guard.
* Please replace the valve if it is
deformed or hardened.
2. Install the valve and valve guard.
CAUTION
When assembling the pump, please make sure
to keep it airtight so that there are no air leaks.
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7. MAINTENANCE (continued)
8. CHECKING PROCEDURE
■ Check for a broken heater
or sensor
■ Replacing the fuse
1. Check for a broken heater or sensor.
Verify the electrical integrity of the heater and
sensor.
Measure the resistance of the heater and sensor
while at room temperature (15 to 25℃； 59 to 77℉).
It should be 3.4 Ω ±10%. If the resistance exceeds
these limits, replace the tip.
1. Unplug the power cord from the power receptacle.
2. Remove the fuse holder.
3. Replace the fuse.
4. Put the fuse holder back in place.
WARNING
Unless otherwise directed, carry out these procedures with the power switch OFF and
the power UNPLUGGED.
Measure the resistance across this position.
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