General Information - Ingersoll Rand R4-11 kW Mode D'emploi

The air/coolant mixture discharges from the compressor into the separation
system. This system removes all but a few ppm of the coolant from the
discharge air. The coolant is returned to the cooling system and the air passes
to the after-cooler and out of the compressor through the moisture separator.
Air is pulled into the compressor by the cooling fan and the through the
coolant cooler and after-cooler.
By cooling the discharge air, much of the water vapor naturally contained in
the air is condensed and is drained from the built-in moisture trap (for dryer
machines) and drain.
The coolant system consists of a sump, cooler, thermostatic valve and a
filter. When the compressor is operating, coolant is forced by air pressure
from the separator tank to the thermostatic element. The position of the
element (a direct result of coolant temperature) will determine whether the
coolant circulates through the cooler, bypasses the cooler, or mixes the two
paths together to maintain an optimum compressor discharge temperature.
This temperature is controlled to preclude the possibility of water vapor
condensing. By injecting coolant at a sufficiently high temperature, the
discharge air coolant mixture temperature will be kept above the dew point.
The compressor is provided with a temperature sensor which will shut the
compressor down in case of excessive temperature. This setting is typically
109°C (228°F).
Effective coolant filtration is provided by the use of a screw on, heavy duty
coolant filter.
Standard air compressors are factory filled with premium coolant
(Ultra/Ultra EL)�� It is recommended to perform a coolant analysis every
2000 hours or 3 months to monitor condition and determine when to
change the coolant�� If an analysis is not performed, the recommended
coolant change interval for Premium Coolant (Ultra) is 8000 hours or
two years, whichever comes first and for Premium Coolant (Ultra EL),
the change interval is 16000 hours or three years, whichever comes
first��
For compressors supplied with Food-Grade Lubricant (Ultra FG), it
is recommended to perform a coolant analysis every 1000 hours to
monitor condition and determine when to change the coolant�� If an
analysis is not performed, the recommended coolant change interval
is 6000 hours��
Fixed speed compressors should not be connected to variable speed
drives�� Contact your local Ingersoll Rand representative before
inverter duty conversion��
80448483 Rev.B
RELEASED 16/Dec/2014 10:49:53 GMT

GENERAL INFoRMATIoN

NOTICE
CAUTION
For fixed speed models, the compressor may not reach its normal
operating temperature during periods of low demand�� Sustained
operation at low demand can result in the buildup of condensate in
the coolant�� If this situation occurs, the lubricating characteristics
of the coolant can be impaired, which may lead to damage of the
compressor��
The compressor should be allowed ample loading time��
Controller logic causes the compressor to continue running for 2
minutes in unloaded state to prevent this condition��
In the default mode, the dryer is non-cycling. The stop button must be
pressed to shut off the dryer.
If ISo Class 4 dew point standards are critical to your application,
run the compressor in unload mode (fixed speed) or idle mode
(variable speed) for one minute at startup to allow the dryer to reach
the required dew point before the compressor begins providing
compressed air��
CAUTION
NOTICE
EN
EN-7