Fluid Circulation

10. Set PRESSURE RELIEF/SPRAY valves

(SA, SB) to SPRAY

.

SA

 

SB

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Circulation Through Gun Manifold

Do not circulate fluid containing a blowing agent without consulting with your material supplier regarding fluid temperature limits.

Circulating fluid through the gun manifold allows rapid preheating of hose.

1.Install gun fluid manifold (P) on Part 246362 accessory circulation kit (CK). Con- nect high pressure circulation lines (R) to circulation manifold.

P

CKR

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2.Route circulation lines back to respective component A or B supply drum. Use hoses rated at the maximum working pressure of this equipment. See Typical Installation, without circulation, page 15.

3. Follow Startup procedures, page 30.

4. Turn main power ON

.

5. Set temperature targets, see page 31. Turn

on A , B , and

heat zones by

pressing .

6.Press to display actual temperatures.

7.Before starting motor, reduce hydraulic pressure to the minimum required to circu-

late fluid until A and B tempera- tures reach targets.

-

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8.Press motor to start motor and pumps. Circulate fluid at lowest possible pressure until temperatures reach targets.

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Graco H25, H50, H40 important safety instructions Circulation Through Gun Manifold