Product Manual

Cod. 710.0134.39.00 Rev1B – 01.2009
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3.1.3 DISPLAY INDICATIONS
The controller is capable of recognizing certain types of anomalies in the drying circuit. In such cases, a message will
blink on the display, alternated to the current dew point value.
MESSAGE
(BLINKING)
CAUSE OUTPUTS ACTIONS
HtA
High dew point value
(delayed alarm)
Alarm output ON
Refrig. Compressor output OFF
Fan output ON
Drain cycle standard
Resettable by switching off the
dryer.
If problem persists call your
local Ingersoll Rand distributor.
Ht2
Very high dew point value
(immediate alarm)
LtA
Low dew point value
Alarm output ON
Refrig. Compressor output OFF
Fan output OFF
Drain cycle standard
Automatic reset when dew
point returns to preset range.
If problem persists call your
local Ingersoll Rand distributor.
PF1
Interruption or short circuit on
the PTC probe input line
Alarm output ON
Refrig. Compressor output OFF
Fan output OFF
Drain cycle standard
Resettable by switching off the
dryer. May require replacing the
faulty probe.
If problem persists call your
local Ingersoll Rand distributor.
ESA
The automatic Energy saving
mode activated due to low
load
Alarm output OFF
Refrig. Compressor output OFF
Fan output OFF
Drain cycle standard
No action necessary.
Automatic Reset
ES2
ASt
Activated after repeated
alarms
Alarm output ON
Refrig. Compressor output OFF
Fan output ON
Drain cycle standard
Call your local Ingersoll Rand
distributor.
Note: PF1 has priority on all other messages.
3.1.4 REMOTE SIGNALING ALARM
The dryer control board is equipped with a dry contact for a remote alarm signal. This is
normally open contact: when an alarm is detected, this contact is closed.
Proceed as follows to activate a remote alarm output:
1. The User must review the diagram below.
2. Disconnect the dryer from electrical power supply, remove cover and left side panel.
3. Connect the alarm circuit to the terminal blocks (See PIC.2).
4. Replace cover, left side panel and reconnect power.
Alarm Output relays electric
features:
Max. 250VAC / 3A – AC 15 (Amp. Inductive)
PIC.2
The activation of the above function is at the User’s discretion. The User will purchase all necessary
installation material. Any operation which needs access to the dryer must be carried out by qualified
personnel.