Woodstock W1816 owner manual Closest CFM

W1816 Owner's Manual (Mfg. Since 10/09)

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 closest CFM given in the Performance Curve section on the Machine Data Sheet for your dust collector on Page 4.

Example: The Model W1816 Data Sheet Performance Curve is illustrated in Figure 49. Find 4.4 on the Static Pressure axis (the amount of total static pressure loss calculated in Figure 48), then refer to the closest value on the CFM axis— approximately 1380 CFM.

The 1380 CFM for the static pressure loss of the line connected to the router table is well above the 220 CFM requirement of that machine.

—If the CFM for your static pressure loss is above the requirement of the machine connected to the end of that branch line, then dust collection will most likely be successful. Congratulations! You've just designed your own dust system.

—If the CFM for your static pressure loss is below the requirement of the machine, 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

				Performance Curve
	2000
(CFM)	1750
	1500	1489		1407
					1319
Capacity							1246
	1250
								1090
	1000
Suction	750	4.4 SP
	500	Loss				Closest CFM
Air
	250						(1380)
											0
	0	2	3	4	5	6	7	8	9	10	11
			Static Pressure (Inch/H2O)

Figure 49. Example of CFM for static pressure loss for the duct line connected between the dust collector and a router (220 CFM).

OPERATIONS

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