3M PG II, Owner'S Manual

Page: 8 / 68

© 3M 2020. 8
Preventive Maintenance
Before Operation
CAUTION
Always remember the tip and valve are extremely hot.
1. Make sure filtered compressed air is available, regulated to a
maximum of 80 psi (551 kPa) or to a minimum of 50 psi (345 kPa).
DO NOT OPERATE 3M™ HOT MELT APPLICATOR PG II BELOW
40 PSI (275 kPa).
If low flow is experienced at 40 psi (275 kPa)
see page 10.
2. Make sure that the 3M Hot Melt Applicator PG II is plugged
into 120 VAC and that the switch is in the “on” position.
Switch should light up.
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3. Inspect nozzle tip daily. Make sure tip is clean and clear of
foreign matter. Using a coarse cloth, wipe off any accumulated
adhesive or other foreign matter on the tip.
CAUTION
Valve and nozzle tip are extremely hot. Wear heat resistant
gloves when cleaning tip.
4. Be sure there is adhesive in the loading chamber.
5. Under normal conditions, allow at least 15 minutes for the
applicator to warm up.
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6. Under normal operations the in-line air filter should be removed
and cleaned every six months. Simply remove the filter from
the air supply line and blow compressed air through the filter in
reverse of normal air flow to remove particular matter.
7. Periodically inspect the applicator to ensure that assembly
is proper (i.e. watch for loose screws, worn pins, etc). See
page 10-16 for Troubleshooting and Repair Procedures.
NOTE: Before shutting down the 3M Hot Melt Applicator PG II
put the electrical switch in the “off” position. Continue using
the applicator until approximately one adhesive stick has been
consumed. If 3M Hot Melt Applicator PG II has not been in
use but still on heat prior to shut down WITHOUT EXTRUDING
ADHESIVE, allow at least one hour for heat-up.