Ingersoll Rand UP6 15 Mode D'emploi page 33

The UP series integrated dryer is not for use with the low ambient
or outdoor module options.
INSTALLATION
a) Do not obstruct the dryer air grilles.
b) Allow sufficient gap around the unit to facilitate maintenance and
ensure unimpeded air discharge from the condenser.
c) Avoid recirculation of hot condenser air back into the condenser air
inlet.
d) Do not connect condensate drains common to other pressurized
drain lines in a closed circuit. Make sure the outflow from the condensate
drains is unimpeded. Connect the condensate piping in such a way to
ensure that sound levels are kept to a minimum during drainage.
Ensure that all condensate is disposed of in a responsible manner, in
accordance with local norms concerning environmental protection.
e) The ambient air around the dryer and compressor must not contain
solid or gaseous contaminants. All compressed and condensed gases
can generate acids or chemical products which may damage the
compressor or components inside the dryer.
Take particular care with sulphur, ammonia, chlorine and installations in
marine environments. For further advice or assistance consult your local
Ingersoll Rand representative.
ELECTRICAL CONNECTION
The dryer is powered from single–phase that must be supplied
separately from the compressor three–phase supply. The dryer should
be connected to a single phase supply in accordance with local
requirements and codes.
CONDENSATE DRAINS
The dryer package is equipped with three automatic condensate float
drains in the moisture separator, the dryer's compressor, and the
post–filter. Each float drain has a drainage port near the compressed air
outlet on the package.
THESE LINES MUST BE KEPT SEPARATE. Joining them will cause
improper operation.
START–UP AND OPERATION
Preliminary checks
Before starting the compressor, make sure that:
The power supply is correct for the dryer voltage.
Starting the dryer
a) Use the green switch to start the dryer (Fig.2b).
b) To protect dryer equipment, always start up the dryer before
activating the air compressor.
c) Wait about 5 minutes until the dryer is running at the correct operating
temperatures and pressures before starting the compressor.
d) Always leave the dryer running while the air compressor is operating,
irrespective of load condition.
After stopping the dryer, wait at least 3 minutes before starting it again.
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DRYER OPTION
STOPPING THE DRYER
a) Use the switch to stop the dryer (Fig.2b).
b) Stop the dryer at least 2 minutes after shutting down the air
compressor or interrupting the air flow to the dryer.
Compressed air must never enter the dryer when the dryer is switched
off or when it is in an alarm situation which stops the refrigeration
compressor. The dryer can be bypassed in these conditions.
OPERATION
The dryer operates automatically. It is factory set for a dew point of
37 F (3 C) (ISO7183, Part 2) and therefore requires no further
calibration.
For maximum performance from your dryer, follow the maintenance
schedule.
The dewpoint thermometer gives an indication of performance of the
dryer. When the dryer is switched off at ambient conditions, it displays
red. In normal conditions it should be operating in the green region. If the
unit continues to operate in the red region, contact your local
Ingersoll Rand representative.
Fig.1 shows the dryer's refrigeration and air circuits.
In order to bypass the dryer, stop the UP compressor and lock and tag
it out. Turn BOTH valves to a horizontal position, as shown. The
compressor can be run and the dryer can be removed from the system
for repair in bypass mode.
Do not operate with valves in positions other than those shown here. This
may pressurize dryer with no air flow.
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UP6 15, UP6 20, UP6 25, UP6 30