Grizzly G0648 owner manual Operation

Operation

Symptom	Possible Cause		Possible Solution
Suction CFM is	1.	Blast gate is leaking or is not completely	1.	Make sure appropriate blast gate(s) are completely
lower than normal.		open.		open and do not leak.
	2.	Door or cabinet is at fault.	2.	Make sure that all doors are closed seals do not
				leak.
	3.	Ducting is at fault.	3.	Reduce length of ducting; maintain 6" diameter
				ducting; eliminate as many bends as possible;
				move downdraft table closer to fume extractor.
	4.	Slag screen is at fault.	4.	Remove slag drawer and clean slag screen.
	5.	Rolling filter is at fault.	5.	Increase rolling-filter advance intervals to expose
				new filter paper more often to maintain CFM.
	6.	Vibrating filter is at fault.	6.	Manually clean the vibrating filter or replace.
	7.	HEPA filter is at fault.	7.	Manually clean the HEPA filter or replace.
	8.	Fan system is at fault.	8.	Fan motor has lost RPM, adjust/troubleshoot
				frequency drive and replace motor or frequency
				drive if required.
Filter warning lamp/	1.	Infrared sensor is at fault.	1.	Replace infrared sensor.
buzzer engages but	2.	Circuit board is at fault.	2.	Replace circuit board.
filter paper has not
run out.
High rolling-filter	1.	Incorrect machine usage.	1.	Eliminate idle time. Do not let machine run between
usage.				welding jobs, shift changes, or breaks.
	2.	Rolling filter advance timing at fault.	2.	Clean all filters. Delay rolling-filter advance timing
				and/or decrease amount of new filter that is
				exposed during advance cycles.
	3.	Workpiece is not properly prepared.	3.	Reduce smoke and fumes. Grind, scrape, strip or
				sandblast away workpiece coatings to a minimum
				of 4" away from location to be heated.

G0648 Welding Fume Extractor -35-