9727 datasheet(11/26 Pages) 3M

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Problem

Probable Cause

Correction

(In order of priority)

Low or no adhesive flow

Troubleshooting

1. Hung adhesive stick

Turn on the 3M™ Scotch-Weld™ Hot

Melt Applicator PG II LT and allow it to

heat for at least 60 minutes.

Caution

Contact with molten adhesive or hot

applicator tip or metal components

may cause burns. Wear heat-

resistant gloves and safety glasses

when operating or repairing the

3M Scotch-Weld Hot Melt

Applicator PG II LT.

With incoming air at 80 psi extrude

adhesive. If unsuccessful remove nozzle

assembly and extrude one stick of

adhesive. Readjust incoming air to

desired pressure.

Check to see if there is sufficient air

pressure. Test by setting pressure at 80

psi. Check in-line filter to ensure that it is

not plugged with contaminants.

Disconnect in-line filter from air hose.

Using a compressed air line, blow

compressed air through the filter in the

reverse flow position. If this does not

increase air flow through the filter, swivel

filter should be replaced.

Check to see that electrical service is

live, and that lighted switch is in “on”

position.

Remove nozzle valve and clean. Run

one adhesive stick out. Replace cleaned

valve assembly. This step should only be

done while tip is hot

Caution

Contact with molten adhesive or hot

applicator tip or metal components

may cause burns. Wear heat-

resistant gloves and safety glasses

when operating or repairing the

3M Scotch-Weld Hot Melt

Applicator PG II LT.

Squeeze trigger and try to pull retract

knobs. If they can be pulled back easily,

install new regulator kit.

2. Low air pressure

3. No electricity

4. Dirty nozzle valve assembly

5. Regulator malfunction

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