HAKO 474, Instruction Manual

Page: 12 / 32

11
6. Maintenance
(Station)
Cleaning the inside of the Filter Case
Cleaning the Pump
WARNING
Unplug the power cord before starting this
procedure.
1. Disassemble the pump heads.
• Remove the rear panel.
• Remove the cover.
• Remove the pump head from each
side of the pump.
2. Clean the pump head.
• Remove the valve plate and fixing
plate.
• Remove any flux adhering to the
plates.
CAUTION
If the fixing plate is difficult to remove,
apply hot air to it to warm it up.
Never use excessive force to remove the
plate as it is easy to bend, and a bent
plate will allow air to leak out and reduce
solder vacuuming efficiency.
CAUTION
Clean the plates only with alcohol or thinner.
Replace
If the valve plate is bent or stiff, replace it.
• If the exhaust filter is dirty, replace
it.
3. Assemble the pump heads.
Reassemble the valve plate and
fixing plate.
CAUTION
When assembling the pump, be sure to
check for air leaks.
VACUUM
Ceramic Paper
Filter (S)
(No.A1009)
Filter Retainer
Remove the filter retainer
and push out the ceramic
paper filter.
Cover
Rear Panel
Remove
the screws
Remove
the cover screws.
(right/left)
Clean the pump head
and fixing plate.
Fixing Plate
Valve Plate
Pump Head
Exhaust Filter
Pump Head
Valve Plate
Be sure the parts are
aligned correctly.
1. Replace the ceramic paper
filter (No.A1009).
Remove the ceramic paper filter
and inspect it. If it is stiff with flux,
replace it.
2. Reassemble the filter case.
CAUTION
Set the ceramic paper filter (S) for the
filter retainer (station).
Using the ceramic paper filter (L) in the
filter retainer may cause to break or the
power to drop.
Secure the vacuum outlet cap.
Apply silicone grease to the O-ring (S20) and securely
tighten the vacuum outlet cap to prevent air leakage.
Fixing Plate
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