Emerson Vilter VilTech, Operation And Service Manual

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The following sections discuss the standard and optional features contained in the Viltech RECIP
package.
Modes Of Operation
The RECIP Compressor package has several modes of operation. The mode is changed by using the
MODE key and making a selection from the Operation mode menu. The modes of operation are as
follows:
1. Manual - Starting, Stopping and Capacity Control are all performed manually.
2. Automatic - Starting and Stopping can be performed manually or automatically based on Suction
Pressure or Process Temperature. Capacity Control is performed automatically to maintain a specific
control setpoint.
3. Remote - Starting, Stopping and Capacity Control in the Remote mode can only be performed from a
remote computer.
4. Auto-Remote - Similar to the Automatic mode except starting and stopping are performed using the
external Remote Start/Stop input or messages from a remote computer. The setpoint group can only be
selected from a remote computer.
5. Sequenced - This mode is utilized when two or more compressors are being used to control the same
load.
NOTE : The Remote, Auto-Remote, and Sequenced modes are available as system options.
Chapter 2
Compressor Controls