Emerson VISSION 20/20 service manual Timers

Timers

This screen allows the operator to view and adjust timer settings associated with compressor operation.

Timers defined are:

•Capacity Increase Start Delay

•Minimum Compressor Pre lube Time

•Low Oil Pressure Safety Changeover

•High Filter Differential Pressure Safety Changeover

•Low Oil Separator Level Safety Changeover

•Low Oil Separator Temp Safety Changeover

•Low Oil Injection Temp Safety Changeover

•Max Restart after Power Failure

•Hot Starts per Hour

•True Anti-Recycle Timer

•Accumulative Anti-Recycle Timer

•Capacity Increase Start Delay = At compressor startup, the capacity slide position is held at minimum position for this time period. This is to allow compressor and system conditions to stabilize. After the timer expires, the slide is free to move in accordance to the system demands.

•Minimum Compressor Pre-lube Time = This is the length of time the oil pump will run, after establishing Pre- lube Oil Pressure, to prime the oil circuit before starting the compressor.

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