Donaldson Torit CPV-1 Specifications download pdf (Page 23)

Torit PowerCore, CPV-1 to CPV-12

Delta P Control Display

Delta P Control

Description

The Delta P Controller monitors the differential pressure

between the clean and dirty air plenums, providing a

visual display of the ﬁlter condition. When combined with

a pulse timer, it controls the pressure drop by turning

the cleaning mechanism On and Off at the chosen limits.

There are three (3) set points: High Pressure On, Low

Pressure Off, and Alarm. The ﬁrst two, High Pressure On

and Low Pressure Off, control the ﬁlter cleaning system.

The third, Alarm, provides a relay output to activate an

external alarm supplied by others.

Operation

Normal

The Delta P Controller monitors the pressure in the

clean and dirty air plenums while the unit is running. The

blower draws air through the ﬁlters, creating a pressure

drop. The Delta P Controller measures the pressure drop

and provides a visual display in inches water gauge or

metric (SI) units of daPa.

Filter Cleaning

When the pressure drop across the ﬁlters reaches the

High Pressure On setpoint, the controller closes an

output relay allowing a timer to trigger the cleaning

valves sequentially. When the controller senses that the

pressure drop has decreased to the Low Pressure Off

setpoint, the relay opens and the cleaning cycle stops.

This sequence continues as long as the collector is

in use, maintaining the pressure drop within a narrow

range.

Alarm

The Alarm setpoint is set to a higher setting than the High

Pressure On setpoint used to start the ﬁlter cleaning

cycle. It indicates situations when the cleaning system

cannot reduce the pressure drop due to cleaning system

failure, lack of compressed air, or the end of the ﬁlter's

useful life. There is a time delay prior to setting the Alarm

to prevent nuisance trips. The Delta P Controller also

provides an input connection for a remote alarm reset.

For complete information, see the most current version

of the Delta P Installation, Operation, and Maintenance

manual.

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Donaldson Torit CPV-1 Specifications Page 23

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