Graco 77X540 important safety instructions Vent Valve Installation

Vent Valve Installation

Reference numbers used in these instructions corre- spond to Parts included in Kit and are provided on page

5.Parts identified with an alpha character are user pro- vided or already installed components.

To ensure the correct pressure relief valve is used and pressure settings are correct, always use new parts included in your Vent Valve Kit for reassembly.

1.If unit has already been in service, relieve pressure (see Pressure Relief procedure, page 2).

2.Disconnect Dyna-Star HP or HF pump from main power source.

3.Remove outlet tubing from port marked “0” on the pump adapter block (a) (FIG. 2).

Instructions

5.Loosen, remove and discard the 3 socket head cap screws (b) from the adapter block (a) (FIG. 3).

a

b

c

FIG. 3

6.Remove adapter block (a) and o-rings (c) (FIG. 3). Discard these parts according to state and local codes for proper disposal. These parts will not be used for reassembly.

7.Grease o-rings (8) and install o-rings in vent valve block as shown in FIG. 4.

8

a

FIG. 2

4.Remove plug or inlet tubing from port marked “1” on the pump adapter block (a) (FIG. 2).

FIG. 4

Clean surface of the Dyna-Star pump outlet with a clean dry cloth. Inspect pump surface for scratches or nicks. A scratched surface can result in fluid leakage.

332519F 3