Operation
©
3M 2006
5
Warm Up
Make certain that the 3M™ Scotch-Weld ™ Hot
Melt Applicator PG II is fully loaded with
adhesive. Set the off/on switch to the “on”
position, switch should light up, and set 3M
Scotch-Weld Hot Melt Applicator PG II in the
bench stand for 15 minutes. During this warm-up
period you may note a slight dripping from the
nozzle tip. This dripping is due to expansion of the
adhesive during warm-up.
Loading
After warm-up, load applicator with the 3M™
Scotch-Weld™ Hot Melt Adhesive you’ll be using on
the job. To do this, fully retract the Speedloader
piston by pulling one of the retract knobs located on
either side of the loading chamber. Insert up to three
3M Scotch-Weld Hot Melt Adhesive Sticks into the
chamber through the rear loading port. The applicator
is now ready for operation.
As adhesive is extruded, the piston will move
forward. This will be visually evident by the forward
movement of the retract knobs. As the piston
approaches the front of the chamber, a whistling
sound will be heard. At this point the piston may be
retracted and another adhesive stick will fall into
place. Applicator is again ready for operation.
Adhesive may be loaded into the chamber via the
rear port at any time during operation thus saving
time and increasing productivity.
If it is desired to remove adhesive once it is in the
loading chamber, simply roll the applicator to one
side and then point up. This will allow the adhesive
to roll up and out of the chamber.
In order to keep the Speedloader stick feed operating
at maximum efficiency, the chamber should be
sprayed inside while the piston is in the full forward
position with 3M™ Silicone Lubricant or equivalent
once a week.
CAUTION:
Never pull the trigger on the applicator unless there
is adhesive in the loading chamber.
Application
Get a feel for your new 3M Scotch-Weld Hot Melt
Applicator PG II. Start by applying small amounts of
adhesive in puddles on a piece of scrap or paper. Try
feathering the trigger. The 3M Scotch-Weld Hot Melt
Applicator PG II is unique in this respect. Pull the
trigger back slowly and note a small discharge of
adhesive; pull the trigger back more and note
increasing adhesive flow. When the trigger is fully
depressed; you will get maximum flow. If more or
less flow is desired, refer to page 17 of this manual.
Never operate the applicator without a nozzle tip.
Doing so could seriously damage the nozzle valve.
Changing Tips
The 3M Scotch-Weld Hot Melt Applicator PG II
includes two different tips as standard equipment.
Other tips, available from your Scotch-Weld Hot
Melt Adhesive distributor, are shown on page 17 of
this manual.
Caution:
Disconnect air and electrical power before servicing.
Wear heat resistant gloves while working on tips.
Tips can be changed only when the applicator is hot.
You will need a 5/8’’ and a 1/2’’ open-end wrench.
Hold the nozzle valve hex firmly with the 5/8’’
wench, while removing the nozzle tip with the 1/2’’
wrench. The accessory tip is mounted using the
reverse procedure. Snug the tip lightly.
Over
tightening could damage the valve assembly.
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