Ingersoll-Rand D12IN, D25IN, D18IN, D72IN, D108IN Operator's Manual
...
- EN -
DIRECT EXPANSION COMPRESSED AIR DRYERS
Operators Manual
For 60 Hz dryers
- FR -
SECHEUR D’AIR A EXPANSION DIRECTE
Manuel des Opérateurs
Pour des sécheurs à 60 Hz
D12IN D18IN D25IN
D42IN D54IN D72IN
D108IN D144IN D180IN
D300IN D360IN
Cod. 710.0138.39.00 Rev1A – 05.2008 1 - 27
- EN -
CONTENTS
1. GENERAL INFORMATION
1.1 Functional Description 3
1.2 Safe Use of the Dryer 3
2. INSTALLATION
2.1 Acceptance and Transportation 4
2.2 Installation Site 4
2.3 Installation 4
3. START UP
3.1 Control Panel 5
3.1.1 Keys function 6
3.1.2 Condensate discharge Parameters
Programming 6
3.1.3 Anomaly Warning 7
3.1.4 Remote signalling Alarm 7
3.2 Before Start Up 8
3.3 Start Up 8
4. MAINTENANCE, TROUBLESHOOTING
AND DISMANTLING
4.1 Maintenance 8
4.2 Troubleshooting 8
4.3 Dismantling 10
ATTACHMENTS TO THIS MANUAL
A) Refrigerant Circuit 21
B) Electric Circuit Diagram 22
C) Technical Data Sheet 24
D) Correction Factors 25
E) Dryer Dimensions 26
F) Basic Spare Parts 28
- FR -
TABLE DES MATIERES
1. INFORMATIONS GENERALES
1.1 Description fonctionnelle 12
1.2 Utilisation du séchoir en toute sécurité
12
2. INSTALLATION
2.1 Réception et transport 13
2.2 Lieu d'installation 13
2.3 Installation
13
3. MISE EN SERVICE
3.1 Pupitre de commande 14
3.1.1 Fonction des touches 15
3.1.2 Programmation des paramètres 15
3.1.3 Signalisation des anomalies 16
3.1.4 Signalisation d’alarme a distance 16
3.2 Opérations préliminaires à la mise en marche 17
3.3 Mise en marche
17
4. ENTRETIEN, RECHERCHE DES PANNES ET
DEMANTELEMENT
4.1 Entretien 17
4.2 Recherche des pannes 17
4.3 Démantèlement 19
ANNEXES AU MANUEL
A) Circuit Frigorifique 21
B) Schéma électrique 22
C) Caractéristiques Techniques 24
D) Facteurs de Correction 25
E) Dimensions Du Sécheur 26
F) Pièces De Rechange Essentielles 28
Cod. 710.0138.39.00 Rev1A – 05.2008 1 - 28
- EN -
INTRODUCTION
This manual is an integral part of the dryer you bought, and must remain with the machine even if this will be resold.
It is highly recommended that the qualified*personnel for installation maintenance and/or control will fully comply with the
contents of this manual and the prevention and safety rules in force in the country where the system will be used. In this way,
not only the usage of the machine will be rational, but also the service will result cost effective.
In case your dryer will present any kind of problem, please contact your local authorized Ingersoll Rand distributor.
Please note that, when necessary, the use of original spare parts will ensure efficiency and long duration to your dryer.
Due to the continuous technological evolution, Ingersoll Rand reserves the right to modify the specifications contained in this
manual without giving previous notice.
SYMBOLS AND LABELS USED IN THE MANUAL AND ON THE DRYER
or or or
Air inlet.
or or or
Air outlet.
Read the Operators manual before attempt to
start up the machine and to perform any
service operation on the dryer.
Pay particular attention to components or
systems under pressure.
Pay particular attention to the indications
preceded by these symbols.
Pay particular attention to hot surfaces.
Installation, maintenance, and/or control
operations preceded by these symbols must
be performed exclusively by qualified
personnel*.
Pay particular attention to the risk of electric
shock.
Condensate drain point.
Rotation direction of the fan.
Attention: Before performing any
maintenance operation on this
machine, do not forget to disconnect
the electric supply, to completely
discharge air pressure, and to refer to
the Operators manual
* Qualified personnel must be trained and certified in accordance with local laws and regulations.
WARRANTY
The Company warrants that the equipment manufactured by it and delivered hereunder will be free of defects in material and
workmanship for a period of twelve months from the date of placing the Equipment in operation or eighteen months from the
date of shipment from the factory, whichever shall first occur. The Purchaser shall be obligated to promptly report any failure to
conform to this warranty, in writing to the Company in said period, whereupon the Company shall, at its option, correct such
nonconformity, by suitable repair to such equipment or, furnish a replacement part F.O.B. point of shipment, provided the
Purchaser has stored, installed, maintained and operated such Equipment in accordance with good industry practices and has
complied with specific recommendations of the Company. Accessories or equipment furnished by the Company, but
manufactured by others, shall carry whatever warranty the manufacturers have conveyed to the Company and which can be
passed on to the Purchaser. The Company shall not be liable for any repairs, replacements, or adjustments to the Equipment or
any costs of labor performed by the Purchaser or others without Company's prior written approval.
The effects of corrosion, erosion and normal wear and tear are specifically excluded. Performance warranties are limited to
those specifically stated within the Company's proposal. Unless responsibility for meeting such performance warranties are
limited to specified tests, the Company's obligation shall be to correct in the manner and for the period of time provided above.
THE COMPANY MAKES NO OTHER WARRANTY OR REPRESENTATION OF ANY KIND WHATSOEVER, EXPRESSED
OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, ARE HERBY DISCLAIMED.
Cod. 710.0138.39.00 Rev1A – 05.2008 2 - 28
Correction by the Company of nonconformities whether patent or latent, in the manner and for the period of time provided
above, shall constitute fulfillment of all liabilities of the Company for such nonconformities whether based on contract, warranty
negligence, indemnity, strict liability or otherwise with respect to or arising out of such Equipment.
The Purchaser shall not operate Equipment which is considered to be defective, without first notifying the Company in writing
of its intention to do so. Any such use of Equipment will be at Purchaser's sole risk and liability.
Note that this is Ingersoll Rand standard warranty. Any warranty in force at the time of purchase of the equipment or
negotiated as part of the purchase order may take precedence over this warranty.
1. GENERAL INFORMATION
1.1 FUNCTIONAL DESCRIPTION
Ingersoll Rand refrigerated air dryers remove moisture from compressed air. Moisture is detrimental to pneumatically
operated appliances, controls, instruments, machinery and tools.
Compressed air enters the patented aluminum heat exchanger where it is cooled down to the dew point temperature in
two different stages: In the first air/air sector compressed inlet air is cooled thanks to the colder compressed air coming
out counterflow from the condensate separator. In the second refrigerant / air sector, compressed air temperature is
further lowered to the dew point temperature. During this two stages almost all the oil and water vapours contained in
compressed air are condensed to liquid and successively be separated from the compressed air in the condensate
separator and drained out by the automatic drain. At this point the obtained cold air re-enters counterflow the initial air / air
exchanger and it is reheated by the inlet hot air with the consequence of energy recovering and also reduction of the
relative humidity contained in the outflowing air.
This dryer can be easily installed into various pneumatic systems in which dry air is required or desired. Please refer to
Start up chapter for complete operating details.
The dryer comes provided with all the control, safety and adjustment devices, therefore no auxiliary devices
are needed.
A system overload not exceeding the maximum operative limits can worsen the operational performance of the
dryer (high dew point), but it will not affect its safety.
The electric diagram (attachment B) shows the minimum protection degree IP 42.
Improper grounding can result in electrical shock and can cause severe injury or death.
This product must be connected to a grounded, metallic, permanent wiring system or an equipment-grounding
terminal or lead on the product.
All grounding must be performed by a qualified electrician and comply with national and local electrical codes.
In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape
wire for the electric current.
Ground must be established with a bare grounding wire sized according to the voltage and minimum branch
circuit requirements.
Ensure good bare metal contact at all grounding connection points, and ensure all connections are clean and
tight.
Check grounding connections after initial installation and periodically thereafter to ensure good contact and
continuity has been maintained.
Check with a qualified electrician or service technician if the grounding instructions are not completely
understood, or if in doubt as to whether the product is properly grounded.
1.2 USE OF THE MACHINE IN SAFE CONDITIONS
This system has been designed and manufactured in compliance with the European safety directive in force and
UL/ULC, therefore any installation, use and maintenance operations must be performed respecting the instructions
contained in this manual.
Because an air dryer is pressurized and contains rotating parts, the same precautions should be observed as with any
piece of machinery of this type where carelessness in operation or maintenance could be hazardous to personnel. In
addition to obvious safety rules that should be followed with this type of machinery, safety precautions as listed below
must be observed.
1. Only qualified personnel shall be permitted to adjust, perform maintenance or repair this air dryer.
2. Read all instructions completely before operating unit.
3. Pull main electrical disconnect switch and disconnect any separate control lines, if used, before
attempting to work or perform maintenance on the unit.
4. Do not attempt to service any part while machine is in an operational mode.
5. Do not attempt to remove any parts without first relieving the entire air system of pressure.
6. Do not attempt to remove any part of the refrigeration system without removing and containing
refrigerant in accordance with the EPA and local regulations.
7. Do not operate the dryer at pressures in excess of its rating.
8. Do not operate the dryer without guards, shields and screen in place.
9. Inspect unit daily to observe and correct any unsafe operating conditions.
Cod. 710.0138.39.00 Rev1A – 05.2008 3 - 28
2. INSTALLATION
2.1 ACCEPTANCE, UNPACKING AND HANDLING
Upon receiving your Ingersoll Rand air dryer, please inspect the unit closely. If rough handling is detected, please note
it on your delivery receipt, especially if the dryer will not be uncrated immediately. Obtaining the delivery person's signed
agreement to any noted damages will facilitate any insurance claims by the customer.
It is mandatory to keep the dryer always in vertical position, as indicated by the symbols present on the packaging. For
handling, use devices having sufficient capacity for the weight of the machine.
Remove the packaging after having positioned the dryer in the installation site. Dispose the various packaging
materials in compliance with the relevant rules locally in force.
If not in use, the dryer can be stored in its packaging in a dust free and protected site between 32°F (0°C) and 120 °F
(50 °C), and a specific humidity not exceeding 90 %. Should the stocking time exceed 12 months, please contact your
local Ingersoll Rand authorized distributor.
Under no circumstances should any person attempt to lift heavy objects without proper lifting equipment (i.e., crane,
hoist, slings or fork truck). Lifting any unit without proper lifting equipment, may cause serious injury. Use fork lift channels
where provided.
2.2 INSTALLATION SITE
While preparing a proper site for the installation of the dryer, please take into account the following
requirements
The machine must be protected from atmospheric agents and not directly exposed to sun light.
A seating base flat and capable to hold the weight of the machine.
Ambient temperature complying with the nominal data of the dryer.
The dryer should be located in a clean area, without forced air draft that can affect the fan control
system.
Make sure to leave sufficient clearance (20 inches, 500 mm) around the dryer in order to allow an
adequate cooling of the machine and for maintenance and/or control operations.
The incoming air must be free from smoke or flammable vapours which could lead to explosion or fire risks.
2.3 INSTALLATION
Before attempting any installation operation, make sure that
No parts of the air system are under pressure.
No parts of the system are electrically powered.
Tubing to be connected to the dryer are free of impurities.
All interconnecting piping has been tightened.
After having verified the points listed above, you can proceed to the installation of the machine.
1. Connect the dryer to the compressed air lines. If not already existing, we suggest to install a by-pass
allowing to isolate the machine from the plant, thus to facilitate eventual maintenance operations.
2. Perform the electrical connection in accordance with any local laws and regulations after reviewing
the dryer electrical specifications and wiring diagram.
3. Check the condensate drainage assembly, and connect the drain flexible hose to the draining line,
keeping in mind that the condensate separated by the dryer may contain oil, therefore, in order
to dispose of it in compliance with the local rules in force, we suggest installing a water-oil
separator having adequate capacity.
4. Power the dryer after having checked that the nominal voltage and line frequency are constant and
matching the nominal values of the machine. The user must provide the installation with an
adequate line protection and a ground terminal complying with the electrical rules locally in
force.
In order to optimise the use of the dryer, we suggest to place it in such a way that all the control instruments
of the machine will result easily visible.
A suitably sized prefilter must be installed before the dryer. Failure to install and maintain a proper
prefilter will void the dryer warranty. The rating for this filter must be at least 10 micron.
Cod. 710.0138.39.00 Rev1A – 05.2008 4 - 28
3. START UP
Ensure that the dryer is by−passed, or there is no load on the cooler.
Switch on the main electrical isolation switch (if present). The control panel will show the message OFF, indicating that the
line and control voltages are available.
Start sequence
The dryer will initially start by pressing the local ON/OFF button for 1 second. The start sequence will progress only if there
are no active alarms. The compressor motor will start AFTER 120 SECONDS. The fan motor will start simultaneously with
the compressor for D300-360IN models, after 30 seconds for smaller models.
Stop sequence
The dryer can be stopped locally from the control panel. After having pressed the ON/OFF switch for 1 second, the
compressor and the fan motor keep on running for further 10 seconds in order to re-balance the internal pressures. The
dryer can be also stopped due to an alarm or energy saving condition (ESA or ES2). Any alarm will de−energize the
compressor, fan motor can still running, it depends on the type of alarm (see Display indications chapter). If the shutdown is
due to an alarm, a message will blink on display indicating the reason for the shutdown. Energy saving condition (ESA or
ES2) occurs when the dew point stands below the set value for a long time in order to save energy and avoid heat
exchanger freezing. This situation can happen when ambient temperature is low and there is no compressed air load.
Variable speed fan control
A patented microprocessor allows to adjust dryer’s cooling capacity by changing the fan motor speed. If the dew point is
greater than the set value, the fan speed is increased, if the dew point is smaller than the set value, the fan velocity is
decreased. The range can be from 0 to 100% and the higher is the fan speed, the faster the fan LED blinks, you can read
the exact value by pressing the UP button. If the velocity is 100% you will read FL (Full Load). Under load standard
condition the fan speed is usually at 100%, if there is no load the fan velocity can oscillate between 0 and 20%.
In models D300-360IN, in order to adjust the greater dryer’s cooling capacity, a hot gas by-pass valve cooperates with the
variable speed system.
3.1 CONTROL PANEL
The dryers are provided with an electronic control system. All adjustments and resets can be performed by means of the
digital panel located on the front of the dryer.
The control panel is composed of 5 keys (ON/OFF, TEST, SET, DOWN and UP) and a 3 digit display, with three
signalling LEDs indicated by icons (PIC 1)
PIC. 1
DISPLAY VISUALIZATION AND SIGNALLING LEDS
DISPLAY DESCRIPTION
the unit is ON with low load
the unit is ON with normal load
the unit is ON with normal-high load
the unit is ON with high load
LED STATUS DESCRIPTION
ON
Compressor energized
Blinking
Programming mode activated
ON
Condensate drain energized
ON
Speed of the fan = 100%
Blinking
Speed of the fan < 100%
OFF
Fan not running
Cod. 710.0138.39.00 Rev1A – 05.2008 5 - 28
3.1.1 KEYS FUNCTION
TEST: When pushed for 3 sec. during normal operation, it activates the condensate drain.
SET: When pushed and released during normal operation, it displays the dew point set value (decimal).
When pushed for 10 seconds, it allows to enter the C8 and C9 condensate drain parameters programming
menu (see relevant table).
When pushed after having set new configuration values, it stores the applied modifications.
DOWN: When pushed while setting the drain set point, it decreases the displayed value of one unit per
second, during the first 10 seconds, than of one unit every 0,1 sec.
When pushed for 10 seconds during normal operation, it starts an automatic test cycle of the controller.
UP: When pushed while setting the drain set point, it increases the displayed value of one unit per second,
during the first 10 seconds, than of one unit every 0,1 sec.
ON / OFF: Pushed for 1 second, it activates or deactivates the dryer. When the dryer is deactivated, the
display shows OFF.
NOTE: when the controller is in the OFF position, some parts of the dryer may still be energized. Therefore, for
safety purposes, disconnect the electrical power before performing any operation on the machine.
3.1.2 CONDENSATE DISCHARGE PARAMETERS PROGRAMMING
Push the SET key for 10 seconds to enter the parameters configuration menu: the display will show in
sequence the set point value, the code of the first modifiable parameter (C8) and its value).
Only if strictly necessary, use the UP and/or DOWN keys to change the displayed parameter value.
Press the SET key to store the previously changed parameter value or to browse the parameters without
changing them.
15 seconds after the last performed operation, the controller will return automatically to the normal
operation mode.
PARAMETER DESCRIPTION RANGE DEFAULT SET VALUE
C8
Delay between condensate
discharges
1 ÷ 999 (min)
1
D12-144IN D180IN D300-360IN
C9
Time required for condensate
discharge
1 ÷ 999 (sec)
1 2 3
NOTE: Changes entered for timing values will be effective only after exiting the programming, while changes to
other variables will be immediately effective.
Please remember that eventual changes to the configuration parameters of the machine could negatively affect
its efficiency. Thus, changes have to be performed by a person familiar with the operation of the dryer.
WARNING FOR USER:
IT’S FORBIDDEN TO ATTEMPT TO MODIFY THE OTHER CONFIGURATION PARAMETERS OF THE
ELECTRONIC CONTROLLER WITHOUT AUTHORIZATION AND COLLABORATION OF INGERSOLL RAND’S
AUTHORIZED DISTRIBUTOR.
Cod. 710.0138.39.00 Rev1A – 05.2008 6 - 28
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)
Ht2
Very high dew point value
(immediate 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.
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
ES2
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
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.
Cod. 710.0138.39.00 Rev1A – 05.2008 7 - 28
3.2 BEFORE START UP
Before starting the machine, make sure that all operating parameters correspond to the nominal data.
The dryer is supplied already tested and preset for normal operation, and it doesn’t require any calibration.
Nevertheless, it’s necessary to check the operating performances during the first working hours.
3.3 START UP
The operations specified below must be performed after the first start up and at each start up after a
prolonged inactive period of time due to maintenance operations, or any other reason.
1. Make sure that all instructions contained in chapters INSTALLATION SITE and INSTALLATION
have been observed.
2. Ensure dryer by-pass is open and air inlet/outlet valves closed. (if existing).
3. Activate power supply and press the ON/OFF switch on the control panel for at least 1 second.
(note there is a 2 minute delay before the dryer will start after the dryer is turned on).
4. Wait 5 to 10 minutes until machine has achieved its standard operating parameters.
5. Slowly open the air outlet valve and successively open the air inlet valve.
6. If existent, close the air by-pass valve.
7. Check if the condensate drain is working properly.
8. Check if all connecting pipes are properly tightened and fixed.
Before disconnecting the dryer from electrical power supply, use ON/OFF switch to stop the
dryer. Otherwise wait 10 minutes before switching the dryer on again, in order to allow freon
pressure to rebalance.
4. MAINTENANCE, TROUBLESHOOTING AND DECOMMISSIONING
4.1 MAINTENANCE
Before attempting any maintenance operation, make sure that:
1. No parts of the system are under pressure.
2. No parts of the system are electrically powered.
Î WEEKLY OR EVERY 40 HOURS OF OPERATION
Verify the temperature on the control panel display is acceptable.
Visually check if the condensate is drained regularly.
Î MONTHLY OR EVERY 200 HOURS OF OPERATION
Clean the condenser with compressed air, taking care not to damage the condenser fins..
At the end of the above mentioned operations, check if the dryer is working properly.
Check the condition of any filters installed with the dryer. Replace elements as needed.
Î YEARLY OR EVERY 2000 HOURS OF OPERATION
Check if the flexible tube used for condensate drainage is damaged and replace it if necessary.
Check if all connecting pipes are properly tightened and fixed.
At the end of the above mentioned operations, check if the dryer is working properly.
4.2 TROUBLESHOOTING
NOTE: FOLLOWING BEHAVIORS ARE NORMAL CHARACTERISTIC OF OPERATION AND NOT TROUBLES
• Variable speed of the fan.
• Display of message ESA and ES2 in case of operation without load or low load.
• A 2 minute delay for dryer to start after pressing the on/off switch.
Troubleshooting and eventual control and/or maintenance operations must be performed
by qualified personnel.
For maintaining the refrigerating circuit of the machine, contact a refrigeration engineer.
Cod. 710.0138.39.00 Rev1A – 05.2008 8 - 28
TROUBLE DISPLAY POSSIBLE CAUSE REMEDY
No power in the line. Restore the power in the line.
Problems with cabling. Check cabling; if the trouble persists, replace it.
Control
panel
display is
blank
Problems with the electronic control
board.
Check the electronic control board; if the trouble
persists, replace it.
The dryer is off.
Turn it on by pressing the ON/OFF switch for 1
second.
Dryer in stand-by. Wait 2 minutes after the dryer is switched on.
Compressed air inlet/outlet inverted.
Check if the compressed air inlet/outlet is connected
properly.
The flow rate and/or temperature of the
air entering the dryer are higher than the
nominal values.
Restore the nominal conditions.
The ambient temperature is higher than
the nominal values.
Restore the nominal conditions.
The condenser is dirty. Clean the condenser.
Clean the condensate drainage system pre-filter.
(Pic.3)
Replace the coil of the drainage solenoid valve if
burned.
Clean or replace the drainage solenoid valve if
clogged/jammed.
Condensate drain is not functioning.
Check the C8 and C9 parameters of the electronic
control board; if the trouble persists, replace it.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Problems with cabling or with the
electronic control board.
Check the cabling and the electronic control board, if
the trouble persists, replace them.
Activation of compressor’s internal
thermal protection.
Wait one hour and check again. If the fault persists:
stop dryer and call your local Ingersoll Rand
distributor.
Problems with the electrical components
of the compressor.
Check the electrical components of the compressor.
Defective compressor. Replace the compressor.
The flow rate and/or temperature of the
air entering the dryer are higher than the
nominal values.
Restore the nominal conditions.
The ambient temperature is higher than
the nominal values.
Restore the nominal conditions.
The condenser is dirty. Clean the condenser.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Fan pressure switch defective or burned
out (if present).
Turn off the dryer and call your local Ingersoll Rand
distributor.
High pressure switch defective or burned
out (if present).
Turn off the dryer and call your local Ingersoll Rand
distributor.
Gas leakage in the refrigerating circuit.
Turn off the dryer and call your local Ingersoll Rand
distributor.
Defective fan. Replace the fan.
Protection fuse burned out (if present). Replace the fuse.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
Gas leakage in the refrigerating circuit
without load.
Turn off the dryer and call your local Ingersoll Rand
distributor.
The temperature control probe is
positioned improperly or faulty.
Check the probe; if the trouble persists, replace it.
WATER IN THE SYSTEM
Series of alarms very close to each
other.
Call your local Ingersoll Rand distributor.
Cod. 710.0138.39.00 Rev1A – 05.2008 9 - 28
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