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.