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Inline Filters and Assemblies for Nordson® glue melters

Are you having issues with nozzles clogging?The solution may be as simple as changing your inline filter between the glue hose and applicator head.Many production/packaging facilities add this simple maintenance item to their preventive maintenance schedule. The frequency of changing your filters will be determined by the type of adhesive used, if your tank sits for long periods at the set temperature, how many outside contaminants you have in the air, if your glue is kept covered before use, if your tank is kept full and many other factors.There are 2 different types of inline filters used on the Nordson®  applicators:

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Instructions for Cleaning Nordson® Glue Melter

July is typically the most convenient time for manufacturing plants to shut down for cleaning.Below is detailed instructions on how to flush and clean a Nordson® Glue unit.Always Wear appropriate protective gear:Safety GlassesHeat resistant long gloves (covers forearms)Tools Needed:                                                               Parts Needed:3/16” Allen Wrench                                                         Red Baron Tank CleanerOpen end wrenches:                                                      Tank Filter Kit11/6”                                                                                 Inline Filter1/2"                                                                                   O-Lube7/8”3/4"5/8”Phillips Head Screwdriver5 Gallon Metal bucket1 Gallon Metal bucketLint free clothsNon metal scrapers for high heatStep 1Using 3/16” Allen wrench, turn the air pressure off to the pump.Step 2At programming area, turn off channels to all applicator heads.Step 3Disconnect the electrical connector of hose from applicator head. Using an 11/16” wrench, disconnect hose fitting from the hydraulic connector of applicator head.Step 4Place end of hose into the 5 gallon metal bucket.Step 5Turn pump pressure on and pump all adhesive out of glue tank into bucket.Step 6Turn pump pressure off.Step 7With non metal scraper preferably with a sharp edge, clean out large pieces of debris in tank and dispose of into 5 gallon bucket.Step 8Pour Red Baron Cleaner into tank until tank is full.Step 9Turn pump pressure on and pump until Red Baron starts to dispense into bucket.Step 10Turn pump pressure off.Step 11Carefully move open end of hose to glue tank for recirculation.Step 12Secure hose, close lid over hose and turn pump pressure on.Step 13Let system pump and recirculate cleaner for 15 minutes.Step 14While system is recirculating, change inline filter at applicator head.Step 15If new style fitting, use 1/2” wrench to unscrew filter cartridge and drop cartridge in small metal bucket.If old style fitting, use 2 wrenches to unscrew the fitting (7/8” on fitting body & 3/4” on nut), remove the filter from inside fitting and drop in small metal bucket.Place new filter into the fitting and tighten the fitting ends together.Step 16Use Red Baron Cleaner on lint free cloth to wipe down outside panels until debris is removed.Step 17Turn pump pressure off on melter.Step 18Carefully remove open end of hose to the 5 gallon metal bucket.Step 19Turn pump pressure on.Step 20Pump all Red Baron cleaner from tank into bucket.Step 21Turn pump pressure off.Step 22With non metal scraper, remove any remaining char on sides and bottom of tank.Step 23Refill with Red Baron cleaner.Step 24Carefully move open end of hose to the glue tank, secure hose and close lid.Step 25Turn pump pressure on.Step 26Heat to operating temperature and pump through hose recirculating back into tank for 15 to 20 minutes.Step 27Turn pump pressure off. **Depending on tank condition, repeat Steps 22-26.Step 28Carefully remove open end of hose to the 5 gallon metal bucket.Step 29Turn pump pressure on and pump all Red Baron cleaner from tank into bucket.Step 30Turn pump pressure off.Step 31Using Phillips head screwdriver, open pump access panel.Step 32With 5/8” wrench, remove the tank filter and drop into metal bucket. Replace with new filter and new orings. Do not over tighten.Step 33Fill tank with adhesive.Step 34Once tank reaches operating temperature, turn pump pressure on and pump remaining Red Baron cleaner from hose until a clean stream of adhesive pumps into bucket.Step 35Turn pump pressure off.Step 36Reconnect hose to applicator head fitting and reconnect hose electrical connector to applicator electrical connector.Step 37After applicator head reaches operating temperature, double check tightness of hydraulic fitting and inline filter cartridge and tank filter.Step 38Return pump pressure to operating pressure setting.**If tank still has char after second flush, repeat steps 22 – 26.

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Char Buildup in Glue Melter

What are the causes of char in glue melters and what can you do to reduce the buildup? Wouldn't it be nice to reduce the pesky char that clogs your nozzles and shuts down a production line.  Sounds easy, right?!? There are many variables that can attribute to this issue.  Make some observations of your production lines based on the list of Challenges below.  If you have any of these challenges below, you are prone to have glue melter clogging issues, which means possible expensive downtime.

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Reduce Glue Nozzle Clogging

Are you having consistent issues with nozzles clogging on your glue applicators? Verify your inline and tank filters are clean.  A little time in preventive maintenance will go a long way in preventing unplanned and costly downtime.  Over time contaminants will form in the adhesive tank and hose, break off and flow to the applicator heads.  Both the tank filter and the inline filters can catch most of the debris and reduce clogging of the nozzles. Tank Filters for Nordson® KNTF104 - Mdl VII/IX KNTF106 - Mdl 2000/2200 KNTF130 - Mdl IV//XIV KNTF578 - Mdl 2300/300 KNFH0226 - Mdl ProBlue 4/7/10 & DuraBlue™ 10/16 For a variety of inline filters click here

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