Graco 309524N important safety instructions Selecting Tubing, Chart Notes

I

WARNING

Read warnings, pages 4-5.

• Select system components that meet temper- ature and pressure ratings listed in Technical Data, page 28. The heater’s normal output range is adjustable from 84-220°F (29-104°C).

•Locate heater away from all flammable mate- rials and where operators will not come in contact with hot metal surfaces.

•Insulate and/or label lines and components exiting heater that may become hot.

Installation

Selecting Tubing

Fluid loses some heat through the tubing or hose between the heater and spray gun. Locate heater close to the spray area to minimize heat loss through plumb- ing.

The chart in FIG. 2 shows a heat loss curve for 3 com- mon types of tubing.

Chart Notes:

•The greater the flow rate, the less the heat loss.

•Foam-insulated steel tubing and high pres- sure airless paint hose retain heat best. Insu- lated tubing and hose are more expensive, but higher costs are commonly offset by lower operating costs.

•Locate heater close to spray area to minimize heat loss through plumbing.

Typical Fluid Temperature Drop

Heat Loss Curve - 70° F (21° C) ambient

(oF) oC 6

						(20 ft.) 6.1 m steel tube
(9)		5				Fluid: (130° F) 54° C
(8)						(20 ft.) 6.1 m steel tube
(7)	4					(3/8 in.) 9 mm foam insulation
						Fluid: (110° F) 43° C
(6)								(20 ft.) 6.1 m airless paint hose
	3
(5)
								Fluid: (110° F) 43° C
(4)
	2
(3)
(2)	1
(1)
	0												LPM
			0	0.5	1	1.5			2		2.5	3
	(0.1)			(0.2)	(0.3)	(0.4)	(0.5)			(0.6)	(0.7)	(0.8) (GPM )

Flow Rate

FIG. 2: Typical Temperature Drop

309524N 7