YSM20R_YSM20WR_Mainte_E - 第63页

3-2 3 Periodic maintenance items 1.1.2 Checking leaf spring/roller lock Inspect the nozzle holding status of the head periodically . • An unstable holding force at the nozzle leaf spring (hereafter "leaf spring&quot…

3-1

Periodic maintenance items

1. Weekly maintenance

This section mainly describes weekly maintenance items.

1.1 Nozzle inspection

A faulty buffing operation (spring action) can cause pickup errors. To prevent this, inspect each nozzle.

1.1.1 Inspecting nozzle slide section

Check the spring action of the nozzles. Press on a nozzle and if it returns normally there is no problem.

However, if the return action is poor (sluggish), then pickup errors and recognition errors will occur.

CAUTION

When checking by pressing the nozzle tip, use care to avoid applying excessive force. The condition is normal if the

tip returns to its original position after being pressed in approximately 1 mm.

Checking the nozzle spring action

Example: Type 302A nozzle

Press on the nozzle tip with finger.

Returns to original

position

Returns sluggishly

or does not return

CORRECT INCORRECT

53300-KMK-00

3-2

Periodic maintenance items

1.1.2 Checking leaf spring/roller lock

Inspect the nozzle holding status of the head periodically.

• An unstable holding force at the nozzle leaf spring (hereafter "leaf spring") can adversely affect pickup, recognition,

and mounting operations.

• If the roller lock is loose, this may adversely affect the nozzle holding force.

• If the roller is scratched, this may cause recognition errors.

Leaf spring inspection points

Check the following points by attaching/detaching the nozzle to/from the nozzle holder.

• The leaf spring has enough gripping force.

• There is no gap between the leaf springs and the nozzle (FM head : nozzle arm assembly).

• The leaf spring is not warped or deformed.

• The gripping part of the leaf spring is not frayed.

• Mounting bolt and mounting screw are not loose.

• No rollers are scratched.

Checking the leaf spring condition

They are not loose.

FM head HM head

There is no gap.

There is no

deformation or wear.

Roller is not damaged.

Mounting screwMounting bolt

53301-KMK-00

NOTE

If any problem is found during the check work shown above, replace the leaf springs or roller lock while referring to

"2.1 Replacing nozzle leaf springs" or "2.2 FM head: Replacing roller lock" in Chapter 6.

As a rule, be sure to replace a pair of components even when only the leaf spring or roller on one side deteriorates

NOTE

Return the removed nozzles to the original positions of the head.

If removed nozzles from the nozzle station (option), return them to the original storage positions.

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Periodic maintenance items

1.2 Nozzle cleaning

The following describes how to clean and lubricate the Type 30X Group nozzles. Also, clean and lubricate the

Type31X Group nozzles in the same manner.

1.2.1 Cleaning and lubricating nozzle slide section

Remove nozzles.

1. Press the emergency stop button and

then open the machine safety cover.

2. Remove nozzles from the head. If the

machine is equipped with the nozzle

station, press the [Nozzle. Stn Shutter]

button to open the nozzle station shutter

and remove nozzles.

Clean the slide section.

Apply absolute ethanol to the slide section.

Push the nozzle tip several times to repeat

the buffing action (spring action) to clean

the slide section. After cleaning, blow the air

to remove absolute ethanol.

Lubricate the slide section.

Using a precision screwdriver or similar tool

with a pointed tip, apply a small amount of

turbine oil (just enough so that it sinks in) to

the slide section.

Check the buffing action (spring

action).

Push the nozzle tip several times to repeat

the buffing action and spread the turbine

oil. Use a lint-free cloth to wipe away excess

oil remaining around the nozzle.

Remove excess oil remaining in the

nozzle.

Air blow with the air blow tool for

approximately 5 seconds from the nozzle tip

side, and approximately 5 seconds from the

nozzle mounting side. Repeat this process a

few times to remove excess turbine oil

remaining in the nozzle.

NOTE

A thin coat of oil is enough to lubricate the slide section.

Check that the oil was removed.

Blow air through the nozzle again while

placing commercially-available oil blotting

paper over the opposite end of the nozzle,

and check for residual oil in the nozzle.

NOTE

Performing step 5 is usually sufﬁcient to remove oil

remaining in the nozzle. However, if oil still remains, blow

air through the nozzle once again.

Return the nozzle to its original

position.

After verifying again that the nozzle is free of

oil, return the nozzle to its original position

(head or nozzle station).

Lubricating the slide section

Step 3

Slide section

Use a precision screwdriver

to apply a small amount of

turbine oil.

53302-KMK-00

Checking the spring action

Step 4

Spring action at nozzle tip

53303-KMK-00

Checking for residual oil

Step 6

Oil will appear after blowing air (first time) for

about 5 seconds from the nozzle tip.

Repeat the air blow for about 5 seconds

each from the nozzle tip and from the

attachment side.

This task is finished when oil no

longer appears.

Oil blotting

paper

AIr blow tool

53304-KMK-00