Grizzly G0637, G0638 owner manual System Grounding

Note: When calculating static pressure loss to determine if multiple lines can be left open at the same time, only include the main line numbers once.

5.Compare the total static pressure loss for that line to the maximum static pressure rating of your dust collector (refer to the Machine Data Sheets on Pages 3 & 5).

—If your static pressure loss is below the static pressure rating of the dust col- lector, then the line will most likely be successful. Congratulations! You've just designed your own dust system. Refer to the Accessories section on Page 36 to start buying the components necessary to make your system a reality.

—If your static pressure loss is equal to or above the static pressure rating of the dust collector, then that line will not effectively collect the dust. You must then modify some of the factors in that line to reduce the static pressure loss. Some of the ways to do this include 1) installing larger duct,

2)reducing amount of flexible duct used,

3)increasing machine dust port size, 4) moving machine closer to dust collector to eliminate duct length, and 5) reducing 90˚ elbows or replacing them with 45˚ elbows.

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System Grounding

Since plastic hose is abundant, relatively inex- pensive, easily assembled and air tight, it is a very popular material for conveying dust from woodworking machines to the dust collector. We recommend using flexible hose (flex-hose) to con- nect the woodworking machine to the dust collec- tion system. However, plastic flex-hose and plastic duct are insulators, and dust particles moving against the walls of the plastic duct create static electrical build up. This charge will build until it discharges to a ground. If a grounding medium is not available to prevent static electrical build up, the electrical charge will arc to the nearest grounded source. This electrical discharge may cause an explosion and subsequent fire inside the system.

To protect against static electrical build up inside

anon-conducting duct, a bare copper wire should be placed inside the duct along its length and grounded to the dust collector. You must also confirm that the dust collector is continuously grounded through the electrical circuit to the elec- tric service panel.

If you connect the dust collector to more than one machine by way of a non-conducting branching duct system and blast gates, the system must still be grounded as mentioned above. We recom- mend inserting a continuous bare copper ground wire inside the entire duct system and attaching the wire to each grounded woodworking machine and dust collector.

Be sure that you extend the bare copper wire down all branches of the system. Do not forget to connect the wires to each other with wire nuts when two branches meet at a “Y” or “T” connec- tion.

G0637/G0638 Cyclone Dust Collector