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41
DCM600 to 1800 - Instruction Manual
series dCP100a/200a Pressure Modules
SPECIfICAtIonS – InStAllAtIon & oPErAtInG InStruCtIonS
2.0 - deMand Mode using a dCP100a/200a Pressure
The DCT1000 system may be configured to be a self-contained on-demand control system with the installation
of the DCP100A /200A pressure module. when this module is installed, the master controller detects it and
automatically sets the system to an on demand mode, enabling features associated with the pressure sensor.
The following subparagraphs describe the setup and operation of these pressure related features.
2-1 — High limit setup
The High Limit Setup sets the pressure at which the cleaning cycle will begin. This value may be between zero
and the pressure module calibration pressure. Normally, the High Limit should be above the Low Limit. If,
however, the High Limit pressure is set below the Low Limit, the cleaning cycle will begin when the High Limit is
exceeded and stop when the pressure falls below the High Limit. The Low Limit in this case will have no effect.
Pressing both Up and Down buttons simultaneously and holding for about four seconds will restore the factory
setting for High Limit to 5.0’’ w.c. [1.24 kPa].
2.2 — low limit setup
The operation of the Low Limit mode is identical to the High Limit mode except that the default Low Limit
pressure is 3.0’’ w.c.[0.75 kPa]. The upper settable value is the calibration pressure of the pressure module and
the lower limit is zero. Press the Select button until the Low Limit indicator is illuminated. Use the Up and Down
controls to set the limit to the desired setting. Pressing both Up and Down buttons simultaneously and holding
for about four seconds will restore the factory default.
2.3 — High alarm setup
The operation of the High Alarm Setup is identical to the High and Low Limit Setup. The High Alarm
default is 0.0’’ w.c. The upper settable value is the calibration pressure of the pressure module and the
lower limit is zero. Press the Select button until the High Alarm indicator is illuminated. Use the Up and
Down controls to set the limit to the desired setting. Pressing both Up and Down buttons simultaneously
and holding for about four seconds will restore the factory default.
2.4 — low alarm setup
The operation of the Low Alarm Setup is identical to the High and Low Limit Setup. The Low Alarm default
is 0.0’’ w.c. The upper settable value is the calibration pressure of the pressure module and the lower limit
is zero. Press the Select button until the Low Alarm indicator is illuminated. Use the Up and Down controls
to set the limit to the desired setting. Pressing both Up and Down buttons simultaneously and holding for
about four seconds will restore the factor default.
2.5 — auto alarm reset setup
The Auto Alarm Reset Setup mode 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 selected timeout period has expired.
3.0 Pressure Module MaintenanCe
The pressure module should require very little maintenance under normal operational conditions. However,
periodic calibration may be desirable to assure accuracy of the readings. The module may be removed and
returned to the factory for calibration.
