Electrical Connection; Initial Start-Up; Start- Up Sequence - Ingersoll Rand Nirvana 1000 Manual Del Operador

8.4 ELECTRICAL CONNECTION

Equipment is available in various electrical configurations.
All customer connections can be made at the terminal
connections located in the customer electrical connection box
on the rear of the dryer. (Refer to General Arrangement and
appropriate Wiring Diagrams.)
A suitable fused disconnect switch or circuit breaker, in
accordance with national and local code requirements, is
recommended for all Ingersoll Rand equipment. Refer to the
Engineering Specifications Section for voltage requirements
and load.
CAUTION
Never wire directly or connect any additional wires to
the compressor junction box. This will cause severe
system malfunction.
Ingersoll Rand dryers can be configured for three variations
of start modes: Manual Mode, Automatic Mode and Remote
Mode. Refer to Section 10 for instructions on how to change
the dryer's start settings. The instructions below describe the
methods to configure the dryer for a particular Start Mode.
a. Manual Mode (Factory Default) - No modification
required to operate dryer in Manual Mode. Once
power is applied, dryer can be started or stopped by
depressing the local ON / OFF pushbuttons located
on the front panel.
b. Auto Restart Mode - Auto Restart Mode permits
the dryer to start after a brief delay once power is
applied to the dryer. Note that the dryer's touch pad
will still affect dryer operation. Depressing the OFF
button will de-energize the refrigeration compressor
and all other electrical components. After the OFF
button has been depressed, the user must depress
the ON button to permit the dryer to operate.
c. Remote Mode - Remote Mode allows the dryer to be
turned ON or OFF via a remote switch supplied by
the customer. This mode will work regardless of the
setting for Auto Restart. The dryer must be powered
on for this feature to take effect. To enable this
feature:
•
Install N.O. remote switch as indicated on the
appropriate wiring diagram.
•
Customer-supplied contact should be rated at 1A
at 24V. To operate dryer, close switch or contact and
allow dryer to start after an initial delay. The local
On / OFF pushbuttons may also be used at any time
after contact closure.
8.0 INSTALLATION AND INITIAL START-UP
Nirvana Cycling Refrigerated Dryer Models 1000-1600
ingersollrandproducts.com

8.5 INITIAL START-UP

NOTICE
For water cooled models, the water valve must be
manually opened to ensure that the condenser is full
of water prior to start-up.
CAUTION
Allow 8 hours of warm-up time for the crankcase
heater prior to start up. Crankcase heater is connected
directly to the incoming power and is energized at all
times.
8.5.1

START- UP SEQUENCE

Apply power to dryer. LCD Panel will illuminate. The
Anti-Short Cycle delay will commence counting down.
Remaining time on the Crankcase heater will also
countdown.
NOTICE
After installation or a prolonged shutdown,
start the dryer with no air load (no air flow). This
enables the dryer to reach its proper operating
temperature in the shortest time possible
(typically within 30 minutes for Nirvana™ Cycling
dryers).
•
Start Dryer, using one of the following methods, depending
on Start Mode setting:
1. Manual Mode - Press the ON pushbutton.
2. Auto Restart Mode - No additional action required.
3. Remote Automatic Mode - Close the remote contact.
•
For Nirvana™ Cycling dryers, the circulating pump will be
energized and will run continuously. Provided the CHILLER
TEMPERATURE is greater than the Compressor Off Set point
plus 4° F and the anti-short cycle delay and crankcase heater
delay have timed out, the refrigeration system will energize.
As the system operates and thermal mass temperature
drops, the suction pressure will be lowered to between 50
and 65 psig.
After the alarm delay, provided the Chiller Temperature
is greater than the HIGH TEMPERATURE ALARM set
point, the dryer will go into HIGH TEMPERATURE
ALARM. The LCD panel will indicate the alarm and the
refrigeration system will continue to operate. Pressing
the SELECT DISPLAY button will permit viewing of the
available dryer parameters during this alarm condition.
Note that the alarm condition screen will reappear
after approximately 30 seconds until the alarm
condition is cleared.
The CHILLER TEMPERATURE will gradually drop as
indicated on the display. Once the temperature falls
below the HIGH TEMPERATURE ALARM set point,
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