Troubleshooting to Hoses and pumps-Venturi operation

Posted by: FEIHONG Powders |on July 4, 2018

Problem, Cause and Remedy

PROBLEM	CAUSE	REMEDY
Plugged from impact fusion-hard build-up.	Normal build-up	Clean or replace parts
	Air pressure too high	Turn down air settings on pumps and guns
	Moisture in air supply	Check air supply for clean, dry air.
	Composition of powder feed hoses	Check hoses
	Worn venturis and wear parts	Replace worn parts
	Powder too fine	Too much reclaim added to virgin powder Virgin powder pulverized too fine by manufacturer
	Powder type or formula	Some resin types tend to have more impact fusion. Check with your powder supplie
Insufficient powder feed	Powder not fluidizing	See fluidized bed section
	Obstruction from contaminated powder supply	Clean out venturis and hoses. Check powder supply for contamination. Sieve all reclaim before using
	Kinked or flattened hoses	Replace if permanently deformed. Avoid sharp bends. Use hose saddles for reciprocators. Run hoses in covered trench across traffic aisles
	Worn pump venturis.	Replace worn parts
	Low air pressure	Check air supply. Adjust all settings to pumps and guns