9727 datasheet(18/26 Pages) 3M

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Repair Procedures

Heat Shield Disassembly

H. Heat Shield Kit

Caution

Disconnect air and electrical power and make sure

applicator is at room temperature before servicing

3M™ Scotch-Weld™ Hot Melt Applicator PG II LT.

Failure to disconnect air and electrical power before

servicing may cause electrical shock or damage to the

applicator.

Remove the heat shield assembly by removing the two

Phillips head screws from either side of the heat shield

and the one Phillips head screw on the heat shield

immediately above the loading chamber. Reassemble,

following reverse procedure.

I. Heater Kit

Follow “Heat Shield Disassembly, “per procedure H.

All heater wires must be disconnected from their

respective terminal strips. With a suitable drift punch,

drive the old heaters out through the top of the heat

block.

All four heaters should be replaced making sure to

reconnect the wires in the proper places. Refer to the

“Wiring Arrangement” and “Electrical Control”

diagrams, page 21. Be sure that heaters are bottomed

out in the heat block. They should not stick out above

the block more than 1/4’’. It may be necessary to

gently tap the heaters into place, but be careful not to

crack the ceramic.

To ensure that heaters remain in place, gather all the

wires together approximately 1/2’’ below the heat block

and tightly attach the cable tie provided with the kit.

Caution

Disconnect air and electrical power and make sure

applicator is at room temperature before servicing 3M

Scotch-Weld Hot Melt Applicator PG II LT. Failure to

disconnect air and electrical power before servicing

may cause electrical shock or damage to the

applicator.

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