Moisture Removal System; Solenoid Drain (Standard); No Air Loss Drain (Optional); Refrigeration System - Ingersoll Rand Nirvana 1000 Manual Del Operador

7.3 MOISTURE REMOVAL SYSTEM

Ingersoll Rand condensate drains discharge condensed
moisture and lubricants (condensate) from compressed air
equipment.
Liquid droplets are removed from the air stream in the
separator. As the air and liquid mixture passes through the
separator it spins, slows down and then changes direction. This
causes condensate to fall out of the air stream and collect in
the bottom of the separator. The collected liquid is removed
from the separator by a timed electric drain(standard) which is
controlled by the Controller OR an optional No-Air Loss drain.
7.3.1

SOLENOID DRAIN (STANDARD)

The Drain Open time and Drain Closed time are
accessed by depressing the appropriate button and
using the up and down arrows to change the value.
The Drain Open value is seconds; the Drain Closed
value is minutes.
•
To obtain the optimum time values for operation of
the electric drain valve, set the drain closed time to
five minutesand the open time to ten seconds.
•
After running the unit under full rated flow for
approximately 30 minutes, verify that when the
electric drain opens, all of the accumulated liquid is
discharged and then followed by a small burst of air.
•
If a small amount of liquid and a large amount of
air is discharged, decrease the on-time setting or
increase the offtime setting. If there is all liquid and
no air has been discharged, increase the on-time
setting or decrease the offtime setting.
•
The on/off-time settings will vary accordingly to
seasonal conditions. During the summer when
more moisture is present in the air system, a shorter
ontime that increases the valve opening frequency
is required. A longer off-time may be used during
the winter months when moisture levels are lower.
7.3.2

NO AIR LOSS DRAIN (OPTIONAL)

The condensate drain operates as a zero-air-loss
drain, returning air that is displaced in the drain bowl
back into the compressed air system. Consistent
discharging of condensate from compressed air
equipment is essential for proper equipment
operation and performance.
The condensate drain uses a unique sensing method
to determine the level of condensate in the drain bowl.
A transducer located in the drain bowl continuously
sends out a signal 50 times per second. Once the
transducer determines that the level of condensate
has reached a predetermined level within the drain
bowl, a signal is sent to the no-loss drain valve to open.
This operation permits removal of condensate of up to
80 gallons per hour.
7.0 PRINCIPLES OF OPERATION
Nirvana Cycling Refrigerated Dryer Models 1000-1600
ingersollrandproducts.com
The drain also features a test button that permits
manual operation of the no-loss drain valve.
Depressing the test button illuminates the LED and
energizes the solenoid valve. The LED illuminates to
indicate "POWER ON" and goes off when the no-loss
drain valve is operated by the transducer or manual
test button.
The condensate flows through the feed line into
the drain unit and accumulates in the container. A
capacitive sensor continuously registers the liquid
level and passes a signal to the electronic control as
soon as the container is filled. The pilot valve is then
activated and the diaphragm opens the outlet line for
discharging the condensate. When the drain unit has
been emptied, the outlet line is closed again quickly
and tightly without wasting compressed air. "

7.4 REFRIGERATION SYSTEM

The Refrigeration System consists of all the components
which handle R-404A. This is a hermetically sealed closed-
loop system. Referring to Figure 1 and following the phantom
"REFRIGERANT" line, refrigerant is shown leaving the
evaporator section where, in the process of removing heat, it
is changed from a low pressure liquid into a low pressure gas.
This gas enters the suction side of the compressor where it is
compressed into a high pressure gas. The high pressure gas
is cooled in the air cooled or water cooled condenser section
until it becomes a high pressure liquid. It then goes through a
permanent filter dryer that ensures the refrigeration system is
free of contaminants. A thermostatic expansion valve meters
the refrigerant for introduction into the evaporator. The
refrigerant pressure is reduced upon entering the evaporator
where as it evaporates, heat is removed from the thermal
mass fluid. A solenoid valve in the liquid line eliminates the
possibility of flooded starts.

7.5 THERMAL MASS CIRCULATING SYSTEM

The thermal mass fluid in a Ingersoll Rand Nirvana™ Cycling
dryer is continuously circulated in a closed pump loop system.
Referring to Figure 1 and following the dashed "THERMAL
MASS FLUID" line, the heat is removed from the fluid in the
evaporator by the refrigeration system. The thermal mass
reservoir is sized to minimize refrigeration cycles during
reduced air load periods. The thermal mass fluid is pulled from
the bottom of the reservoir and pumped through the chiller,
removing heat from the air and returned to the evaporator. The
pump utilized on Ingersoll Rand Nirvana™ Cycling dryer is a
maintenance-free, quiet cartridge circulator pump similar to
those used in residential water systems. While the refrigeration
system cycles on and off based on loading conditions, the
circulating pump runs continuously to maintain flow through
the chiller at all times.
7