General Information; Functional Description; Use Of The Machine In Safe Conditions; Start Up - Ingersoll Rand R4-11 kW Mode D'emploi

GENERAL INFORMATION

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FUNCTIONAL DESCRIPTION

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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. Refer to Principles of Operation 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��

USE OF THE MACHINE IN SAFE CONDITIONS

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This system has been designed and manufactured in compliance with
the European safety directive in force, 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.
80448483 Rev.B
RELEASED 16/Dec/2014 10:49:53 GMT
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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 start closing the contact remote ON / OFF. The fan motor will
start 30 seconds after the compressor.
Stop sequence
The dryer can be stopped locally from the control panel or opening the
remote ON/OFF contact. 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%.
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��

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EN
EN-39