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Maintenance Method for
Flow soldering system HAKKO 485
HAKKO 485 Overhaul
 
Maintenance Method for Flow soldering system HAKKO 485 TOP
Overhaul Check before work
Disassembly and cleaning
Assembly
 
The problem in which the flow force becomes weak and a block of black oxides is discharged can be prevented by periodic overhauls. In addition, seizure of screws can be prevented.
 
 Disassembly and cleaning
 
If the joint and nut exhibit the condition shown in the photo, disassemble and perform cleaning according to the following procedures.
 
If the joint and nut exhibit the condition shown in the photo, disassemble and perform cleaning according to the following procedures.
Necessary tools: Hexagonal wrench (width across flats: 2mm)
  Box wrench (width across flats: 10mm)
  Pliers
  Long-nose pliers
  Spatula (included as standard equipment for HAKKO 485)

Necessary tools
 
Do not turn on the power at first.
 
1. Remove the 3 screws for the joint. (Tool to be used: Hexagonal wrench)
 

The old-type joint is secured with 2 screws.
Remove the 3 screws for the joint.
 
2. Slide the joint upward. (Tool to be used: Pliers)

Condition in which the joint has been removed from the impeller Pinch the joint with the pliers and slide it upward.
Tips for removing a seized joint of HAKKO 485
 
3. Remove the 2 nuts. (Tool to be used: Box wrench)
 

In order to prevent the bolt for the bath from being broken, loosen the nut gradually to remove.
If the nuts are forcibly turned, the bolt will be broken and the bath must be replaced. (If a bolt is broken and the bath must be replaced, it is recommended to send it in for repair.)

If cleaning is performed periodically, work can be performed smoothly without seizure of a screw.

 
Loosen the screw gradually to remove. Condition with nut tightened
Condition with nut removed
4. Turn on the power supply and wait for 30 to 40 minutes until solder is melted.
 
5. Remove the spring washer and spacer. (Tool to be used: Long-nose pliers)
Remove the spring washer and spacer with the long-nose pliers.
 
6. Remove the chamber. (Tool to be used: Pliers)
 

There is melted solder inside the chamber. While letting the solder inside drain into the bath, remove the chamber slowly.

Pinch the solder flow outlet with the pliers and lift it up slowly.
Anti-oxidizer plate This part is just installed on the chamber.
 
7. Remove the bottom plate from the chamber. (Tools to be used: Pliers, box wrench)
 

Insert the box wrench through the solder flow outlet and tap the bottom plate to remove it. There will be melted solder and oxides in the chamber. Remove the bottom plate slowly on the bath while being extra careful.

There will be melted solder and oxides in the chamber. Remove the bottom plate slowly on the bath while being extra careful.

There will be melted solder and oxides in the chamber. Remove the bottom plate slowly on the bath while being extra careful. The bottom plate is just press-fitted into the chamber and is not secured with screws, etc.
 
8. Remove oxides accumulated in the chamber and bath. (Tool to be used: Spatula)
 

Remove oxides gently with the spatula (included as standard equipment).
If the spatula is pushed strongly against the bath, the bath may be damaged, shortening its life in some cases.

Remove not only oxides floating on the surface of the solder but also oxides stuck on the side and bottom of the bath.

Tips for removing oxides in the HAKKO 485 bath
Remove oxides gently with the spatula (included as standard equipment).
 
Remove also oxides stuck on the chamber and bottom plate.
 
 
9. Remove the joint from the motor shaft. (Tool to be used: pliers)
 
If removing the joint with solder melted, remove it slowly while being extra careful.