FRONT
6. MAINTENANCE
(Continued)
The element cover assembly is held to the
nozzle wrench by pressing this part from both
sides. (The nozzle is not held to the nozzle
wrench.)
Nozzle
● Filter Pipe and related parts
Be careful since the area around the filter pipe is extremely hot.
1. Pull the rear holder back until it clicks (locks into place) and remove the filter pipe.
2. Inspect the filter and holders and replace as needed.
3. During assembly, be sure to insert the filter. Failure to do so may damage the unit. After
the parts have been assembled, place the filter pipe assembly into position and push the
release button. The back holder will spring forward and secure the filter pipe while creating
a vacuum seal.
Filter pipe
Back holder
Release button
Front holder
Filter holder
Filter pipe
Pre-filter
Ceramic paper filter (L)
Filter Pipe and related parts
(1) A general guide to replacement part
Use the table below as a general guide to replacement part. Use only genuine HAKKO FR-301
replacement parts as the use of other parts may impair performance, or cause damage or injury.
Part Name
Signs that replacement is needed
Pre-filter
Cannot hold solder
Warping
Ceramic paper filter (L)
Hardened by flux staining
Front holder
Hardening has reduced air tightness
Nozzle
Repels solder
Solder plating on tip is gone
Clogging
Hole has corroded and is larger
Temperature is low
Heating core (in heater)
Clogged
Normal heater resistance value: 35 Ω (100 - 120 V
models) 160 Ω (220 - 240 V models)
Valve
Cracking
Diaphragm
Tearing
Inner hose
Hose is clogged with flux
Hose has hardened and is no longer flexible
Tearing
(2) Replacing parts
● Nozzle
NOTE:
Be careful since the areas around the nozzle and heating element are very hot.
1. Remove the element cover and the nozzle with the included nozzle wrench.
