Loctite HYSOL 175-AIR, Руководство по эксплуатации, Страница: 7 / 14

7 Troubleshooting
Before proceeding with any repair or maintenance operation disconnect
the tool from the main electricity supply.
Glue “Backup” and “Meltdown”
“Backup” occurs when hot molten adhesive in the glue chamber is forced back
between the barrel wall and the outside surface of the adhesive cartridge and
piston. Once this adhesive cools, it may lock the adhesive cartridge in the
barrel, preventing, or at least restricting, normal extrusion. By far the most
likely cause of backup is allowing insufficient warm-up time before operating
the tool (the molten glue in the glue chamber cannot escape forwards because
the nozzle is blocked, due to being insufficiently warm). In the vast majority of
cases the backup self-clears once the tool, having fully reached operating
temperature
.
"Meltdown" occurs when the rear of the adhesive cartridge softens and is not
rigid enough to drive the cartridge forward without collapsing. As with
backup, the molten adhesive can solidify, potentially locking the cartridge and /
or piston into the barrel. Meltdown occurs when the tool is left on for extended
periods of time without operation. If the tool is to be left standing for forty
minutes or more, it should be switched off.
The Loctite
®
Hysol
®
175-AIR and 175-AIR-HT tools are fitted with specially
coated pistons which have non-stick characteristics far superior to any PTFE
coating; this minimizes the effect of any backup or meltdown, should it occur.
FOR ANY REPAIRS OR ADJUSTMENTS – OTHER THAN THOSE
DETAILED IN THIS MANUAL – PLEASE CONTACT 1-800-LOCTITE
(562-8483).