Imperial Systems CMAXX, Installation, Operation & Maintenance Manual

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6.1.5 Low Limit (Only With DCP Installed)

The operation of the Low Limit, available only with a pressure 

module installed, is identical to the High Limit except this value sets 

the pressure where the cleaning cycle will end. The upper setable 

value is the calibration pressure of the pressure module and the 

lower limit is zero. Pressing “SELECT” will change the system to the 

High Alarm Setup mode.

6.1.6 High Alarm (Only With DCP Installed)

The operation of the High Alarm Setup is identical to the High and Low 

Limit Setup and is only available when a pressure module is installed. 

The High Alarm default is 0. The upper setable value is the full scale 

pressure of the pressure module and the lower limit is zero. Pressing 

“SELECT” will change the system to the Low Alarm Setup mode.

6.1.7 Low Alarm (Only With DCP Installed)

The operation of the Low Alarm Setup is identical to the High and 

Low Limit Setup. The Low Alarm default is “0”. The upper setable 

value is the full scale pressure of the pressure module and the lower 

limit is zero. Pressing “SELECT” will change the system to the Cycle 

Delay Setup mode.

6.1.8 Cycle Delay (min)

The cycle delay inserts a delay time between the end of the last 

channel and the beginning of the first channel. This may be set to 

between zero and 255 minutes. The factory default is zero. Setting 

the value to zero will disable the delay. Pressing “SELECT” will 

change the system to the Down Time Cycles Setup mode.

6.1.9 Down Time Cycles (min)

The Down Time Cycles Setup will select a value between zero and 255 

minutes. The factory default is one minute. Selecting zero will 

disable the operation. When the Down Time Cycles is activated by 

shorting the down time cycles input to the common terminal, the 

system will enter a forced cleaning mode for the programmed 

duration. NOTE: The cycle delay, if one is programmed, will not be 

inserted in the timing cycle. Pressing “SELECT” will change the 

system to the Auto Alarm Reset Setup mode, if a pressure module is 

installed, or to Process when no pressure module is available.

6.1.10 Auto Alarm Reset (sec) (Only With DCP Installed)

The Auto Alarm Reset Setup, available only when a pressure module 

is installed, allows the auto alarm reset time to be selected. This 

value may be set between zero and 255 seconds. The factory default 

value is five seconds. When the auto alarm reset is enabled by 

shorting the auto alarm reset terminal to a common terminal, the 

alarm will be reset after the pressure returns to the normal range 

and the timeout has expired. Pressing “SELECT” will change the 

system to Process mode.

6.2 MAINTENANCE SUPPORT AND DIAGNOSTICS

We have also included a number of features that will aid 

maintenance personnel in diagnosing problems or verifying that the 

system is operating.