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17
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:
Parameter
Display
Set Point
NO-LOSS DRAIN
VALVE ENABLE
DRAIN ENABLE
ON (or OFF)
CRANKCASE
HEATER DELAY
CCH DLY
8 (or 0,2,4,12
hours)
AUTO RESTART
ENABLE
AUTO RESTART
N (or Y)
In TECHNICIAN MODE, the following parameters can be
viewed but not changed:
Parameter
Display
Set Point
CONFIGURATION (# of
sensors)
CONFIG #:
1 or 2 or 4 or 8
OPERATING MODE
OP MODE:
HS or NC
REFRIGERANT
REFRIG:
22 or 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:
00:10
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
DISCHARGE PRESSURE
TRANSDUCER
Pd TRANS
Y (N)
SUCTION PRESSURE
TRANSDUCER
Ps TRANS
Y (N)
SUCTION
TEMPERATURE
PROBE
Ts Probe
Y (N)
Parameter
Display
Set Point
FAN 1 ON PRESSURE
FAN1 OFF:
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
10.1 ENTERINg TECHNICIAN MODE
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:
TECH SET MODE
2
3
Pressing the “2” and “3” buttons simultaneously enters
the TECHNICIAN MODE.
SELECT
DISPLAY
DRAIN ENABLE:OFF
Depressing SELECT DISPLAY scrolls through the
available parameters. The first three parameters
viewed are adjustable in TECHNICIAN MODE.
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”:
CCH DELAY:8
SELECT
DISPLAY
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.
120.26A D4290NCHPW400F Installation Operation and Maintenance Manual
