Start Modes; Manual Mode; Auto Restart Mode; Remote Automatic Mode - Ingersoll Rand 1000 Manuel De L'opérateur

LOW PRESSURE CUTOUT ALARM (LO PRESS CO)
If the suction pressure of the refrigerant is determined to be
below the set point of the LPCO alarm, the Microprocessor
Control alarm routine will activate. This alarm condition may
cause damage to the dryer when subjected to continuous or
long-term exposure. Note that once cleared, the compressor
will restart automatically. However, if two successive
lowpressure conditions are determined, this alarm will shut
down the dryer after a response time delay and will display the
alarm condition. The operator must depress the RESET button
in order to reinstate the compressor.
Parameter
FAN 1 ON
FAN 1 OFF
FAN 2 ON
FAN 2 OFF
HPCO (Air Cooled)
HPCO (Water Cooled)
LPCO
Table - 1
7.6.6

START MODES

Ingersoll Rand dryers are capable of starting in
one of three start modes. Note that to protect the
refrigeration compressor from repeated rapid starts,
the Microprocessor Control is equipped with an
an anti-short cycle (ASC) delay. The ASC delay will
countdown from the factory set point. Only after the
ASC delay has timed out will the refrigeration system
operate. Below are brief descriptions of these various
start modes.
7.0 PRINCIPLES OF OPERATION
R-404A
275 psig
195 psig
335 psig
235 psig
450 psig
320 psig
20 psig
Nirvana Cycling Refrigerated Dryer Models 1000-1600
ingersollrandproducts.com

7.6.6.1 Manual Mode

Ingersoll Rand dryers are shipped from the factory in the
Manual Mode. After power is supplied to the dryer, the user
will be presented with the ASC delay, followed by the "PRESS
ON BUTTON" display. After the ASC delay has timed out, the
dryer will only start once the ON button is depressed. In this
configuration, to restart the dryer, the user must manually
depress the ON button on the dryer's control panel.

7.6.6.2 Auto Restart Mode

After power is applied to the dryer, and once an anti-short
cycle delay has timed out, the dryer will start automatically.
In addition, this mode of operation allows manual control
of the dryer via the ON & OFF pushbuttons. This is useful for
applications where automatic restarting of the dryer is desired
after a power failure has occurred..

7.6.6.3 Remote Automatic Mode

This mode of operation allows the user to control the
dryer remotely and requires the installation of a customer-
supplied contact. With power applied to the dryer and once
the antishort cycle delay has timed out, the dryer will start
automatically once the switch is closed. In addition, this mode
of operation still permits manual control of the dryer via the ON
& OFF pushbuttons. Note that the signal to the Remote Alarm
Contact must be 24V.
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