Ingersoll Rand Nirvana NVC2000 A400 Manual Del Operador página 13

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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:
Manual Mode - Press the ON pushbutton.
Auto Restart Mode - No additional action required
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 70 psig.
After the alarm delay, provided the Chiller Temperature is
greater than the HIGH TEMPERATURE ALARM set point, the
8.0 INSTALLATION AND INITIAL START-UP
Nirvana Cycling Refrigerated Dryer Models 2000-2400
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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, the alarm will reset
and the LCD panel will return to its default display. After the
refrigeration system shuts off, air flow may be slowly
introduced to the dryer.
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NOTICE
If power is removed from the dryer for less than two hours, the
crackcase heater delay will be automatically bypassed. If, however,
the power is removed from the dryer for more than two hours, the full
crankcase heater delay must be observed.
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