Ingersoll-Rand Nirvana 3250-8000, Operator'S Manual

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Nirvana Cycling Refrigerated Dryer Models 3250-8000
ingersollrandproducts.com
10.0 TECHNICIAN MODE
The Microprocessor Control provides a protected TECHNICIAN MODE
to manipulate several parameters not accessible by the typical operator.
This mode also permits viewing of the factory settings to aid in
troubleshooting of the dryer. Below is a list of parameters that can be
accessed and manipulated by the technician in the TECHNICIAN
MODE:
In TECHNICIAN MODE, the following parameters can be viewed but
not changed:
Parameter Display Set Point
CONFIGURATION (# of
sensors)
CONFIG #: 1, 2, 4, 8
OPERATING MODE OP MODE: HS or NC
REFRIGERANT REFRIG: 404 or 407
CONDENSER TYPE COND: AC OR WC
OPERATING
TEMPERATURE
DIFFERENTIAL
T OP DIFF: 3
SHORT CYCLE DELAY SHT CYC DLY: 3
HIGH PRESSURE CUTOUT HPCO: See Table-1
HIGH PRESSURE CUTOUT
DELAY
HPCO DLY: 10
LOW PRESSURE CUTOUT LPCO: See Table-1
LOW PRESSURE CUTOUT
DELAY
LPCO DLY: 10
HIGH TEMPERATURE
ALARM
HITEMP ALRM: 55
LOW TEMPERATURE
ALARM LOWTEMP
ALRM:
30
LOW TEMPERATURE
ALARM DELAY
LOTEMP DLY: 2:00
FAN 1 ON PRESSURE FAN1 ON: See Table-1
FAN 1 OFF PRESSURE FAN1 OFF: See Table-1
FAN 2 ON PRESSURE FAN2 ON: See Table-1
FAN 2 OFF PRESSURE FAN2 OFF: See Table-1
ALARM LIST
BEGIN ALARM
LIST
N/A
Parameter Display Set Point
DRAIN VALVE ENABLE DRAIN ENABLE
OFF (For NO LOSS
DRAIN)
CRANKCASE HEATER
DELAY
CCH DLY 8 (or 0,2,4,12 hours)
AUTO RESTART ENABLE AUTO RESTART N (or Y)
10.1 ENTERING TECHNICIAN MODE
A
WARNING
TECHNICIAN MODE should only be entered by qualified service
personnel. Altering the set points in TECHNICIAN MODE will have a
significant effect on the operation of the dryer. Incorrect set points may
damage dryer and cause potential serious injury.
To enter the TECHNICIAN MODE, perform the following keystrokes:
Pressing the “2” and “3” buttons simultaneously enters the
TECHNICIAN MODE.
TECH SET MODE
SELECT
DISPLAY
Depressing SELECT DISPLAY scrolls through the available
parameters. The first three parameters viewed are adjustable in
TECHNICIAN MODE.
DRAIN ENABLE: OFF
2 3
The DRAIN ENABLE parameter determines whether the
Microprocessor Control shall control an electronic no-loss drain valve. A
value of “ON” will permit the Microprocessor Control to control the drain
valve. A value of “OFF” will disable this feature. Ingersoll Rand dryers
are equipped with a no air loss drain as standard equipment. As such,
DRAIN ENABLE must remain “OFF”:
Depressing the SELECT DISPLAY button advances to the
next adjustable parameter for the Crankcase Heater Delay.
This parameter must not be altered unless instructed by
Ingersoll Rand Service personnel.
CCH DELAY: 4
SELECT
DISPLAY
A
NOTICE
The Crankcase Heater Delay set point must not be altered unless
directed by Ingersoll Rand Service Personnel. Improperly altering the
set point may result in damage to the dryer. Contact Ingersoll Rand
Compressed Air Solutions before altering the default set point.