25
Replacing the heating element (heating core)
CAUTION
Except the case especially indicated, always turn the power switch OFF and disconnect the
power plug before performing any maintenance procedure.
1. Remove the enclosure pipe, nozzle, and unplug the cord.
2. Remove the screws 1 , 2 securing
the joint cover to the heating element.
3. Remove the joint cover.
4. Turn the back holder knob counterclockwize
and pull out the filter pipe.
4. Remove the screws 1 ~ 4 securing the flange to the housing.
5. Remove the heating element.
6. The resistance values of a working heating element are 4Ω between
pins 1 and 2 (heating element1) at 73
℉ (23℃
)
. If the measured values
are outside this range, replace the heating element.
7. Remove the ground line.
8. Secure the ground line to the flange with the screw.
9. Secure a heating element to the housing with the screws 1 ~ 4 .
10. Reassemble the Unit.
Heating element
2
3
1
4
Back holder knob
Please note the wire routing.
1
2
2
3
1
4
Joint cover
2
1
26
Pump head
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.
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.
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.
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.