Graco 313528E Bedienungsanleitung PDF herunterladen (Seite 25)

Electronic Crossover Operation

313528E 25

Automatic Crossover

The automatic crossover feature allows continuous flow

and prevents system shutdown. If the active ram

encounters a pump runaway, drum empty, or air sole-

noid disconnected alarm it will attempt an automatic

crossover to the inactive ram.

The system will generate a crossover error if the active

ram attempts an automatic crossover while the inactive

ram has a pump runaway, drum empty, air solenoid dis-

connected, or not primed alarm.

Manual Crossover

Manual crossover can only be initiated if the following

conditions are met:

• inactive ram is not in the drum empty error condi-

tion.

• pump runaway and not primed alarms do not exist.

To initiate a manual crossover to the inactive ram:

1. From the Ram Operation screen, press the Cross-

over key . The display prompts the operator to

confirm.

2. Select to confirm manual crossover operation

or select to cancel.

NOTE: If the active ram has a pump runaway error or

drum empty error, the system will attempt an auto-

matic crossover.

Keep clear of the inactive ram, as automatic cross-

over may occur unexpectedly. To repair or adjust the

ram, first follow all steps of the Pressure Relief Pro-

cedure on page 22.

FIG. 15: Crossover Function Screen

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Graco 313528E Bedienungsanleitung Seite 25