Before Start Up; Start Up; Maintenance, Troubleshooting; Maintenance - Ingersoll Rand D25IT Manuel Des Opérateurs

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.
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.
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 and inside the dryer. Replace elements as needed.
Refer to the 'Filters for Compressed Air' manual for correct servicing procedures.
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.
Cod. 710.0134.39.00 Rev1B – 01.2009
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.
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