System Operation

Solvent Push Feature

The Solvent Push feature enables the user to save some mixed material by pushing it out to the gun with solvent. The quantity saved is 50% of the potlife volume entered in Advanced Setup Screen 1 on page 39. If there are 2 guns, the smaller potlife volume is used.

Solvent Push requires an accessory solvent meter (MS). Order Graco Part No. 280555 S3000 Solvent Meter Kit. See manual 308778.

1.See FIG. 108. Install the solvent meter (MS) on the side of the fluid station, as explained in the ProMix 2KS Installation Manual.

2.To enable Solvent Push, select “Solvent” or “3rd Valve,” as desired. See Option Screen 2, page 37.

NOTE: If you are using a 3rd purge valve instead of the solvent purge valve to run the Solvent Push feature, connect the solvent supply line from the solvent meter to the inlet of the 3rd purge valve.

3. Press and hold the Mix

key for 5 seconds

to turn on Solvent Push. The green Mix LED will light and the Recipe LED will blink. The system will close the Dose Valves (DVA, DVB) and open the Solvent Purge Valve (SPV).

4.The system will dispense solvent to push the mixed material out to the gun. The Booth Control display alternately shows dashes and the percent remaining (0-99%) of the 50% of the potlife volume.

NOTE: To manually interrupt Solvent Push, press the

Standby key. The Solvent Purge Valve (SPV) or

3rd purge valve will close. To re-enter Solvent Push,

press the Mix

key.

5.When the total solvent dispensed exceeds 50% of the potlife volume, the system will go into Standby

mode.

6.Perform a manual purge or recipe change to purge the remaining mixed material. This will clear the sys- tem out of Solvent Push, allowing you to resume Mix mode.

NOTE: Once the system senses that solvent exceeds 50% of potlife volume, attempts to re-enter Solvent Push will cause an Overdose_A/B Alarm (E-5, E-6).

Key:

DVA is closed

DVB is closed

DVA

Component A Dose Valve

 

DVB

Component B Dose Valve

 

MS

Solvent Meter (required)

 

SPV

Solvent Purge Valve

MS

APV

Air Purge Valve

SMC

Solvent Meter Cable

 

SS

Solvent Supply Line

 

SMC

TI12556b

SS SPV is open

FIG. 108. Solvent Push Setup

312779E

99

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Image 99
Graco TI12553a, TI12552a important safety instructions Solvent Push Feature, Key DVA is closed DVB is closed, SS SPV is open

TI12553a, TI12552a specifications

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