Graco 313528E Manual de usuario descargar pdf (Pagina 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 Manual de usuario Pagina 25