Graco 3A0869H Fluid Supply

Installation

14 3A0869H

Fluid Supply

Requirements

ProMix 2KE models are available to operate air spray or

air-assisted systems with a capacity of up to 3800

cc/min.

• Fluid supply pressure tanks, feed pumps, or circu-

lating systems can be used.

• Materials can be transferred from their original con-

tainers or from a central paint recirculating line.

• See manual 313599 for Coriolis meter installation

and operation instructions.

NOTE: The Coriolis meter can be used only on non-IS

systems 24F080-24F083. When installed on these sys-

tems, the meter’s hazardous location intrinsically safe

status is voided.

• If you are using dynamic dosing, see Fluid Connec-

tions, this page. See also Set Up the Fluid Mani-

fold for Dynamic Dosing, page 16.

NOTE: The fluid supply must be free of pressure spikes,

which are commonly caused by pump stroke change-

over. If necessary, install pressure regulators or a surge

tank on the ProMix 2KE fluid inlets to reduce pulsation.

Contact your Graco distributor for additional information.

Fluid Connections

1. See F

. 6. Connect the solvent supply line to the

1/4 npt(f) solvent valve inlets (SVA and SVB).

2. Connect the component A supply line(s).

•Single color system: connect component supply

line to the component A1 dose valve inlet (DVA1).

•Multiple color system: connect supply lines to the

component A2 and A3 dose valve inlets (DVA2,

DVA3). See F

. 6.

NOTE: Solvent supplied by a single source can cause

cross contamination and damage to the system. Install

check valves or use separate solvent sources.

NOTE: Paint Recirculating System Only

• If you are recirculating paint, use the standard inlet

on Dose Valve A1 (A2, A3) or Dose Valve B.

Remove the plug directly opposite it on the dose

valve for the recirculation outlet. The second port is

on the back of the valve and must be reached from

inside the control box.

• Another option is to use a tee fitting to

recirculate.

NOTE: Verify that all unused fluid ports on the color

change valve stack are plugged before operation. An

open port will leak fluid.

3. Connect the component B line to the component B

dose valve inlet (DVB).

NOTE: The component A and B fluid meter inlets have

fluid check valves to prevent backflow from fluid supply

pressure fluctuations. Backflow can cause ratio inaccu-

racies.

4. Connect the gun fluid supply line between the static

mixer (SM) outlet and the gun fluid inlet.

• Do not exceed the pressure rating of the lowest

rated component. See the identification label.

• To reduce the risk of injury, including fluid

injection, you must install a shutoff valve between

each fluid supply line and the mix manifold. Use

the valves to shut off fluid during maintenance

and service.

. 5. Paint Recirculation Port

Second port

ti16338a