ELGi EG 22 - 5.2 Preservation for long idle storage

5.9
Installation and operation
If your compressor is going to remain unused for six
months or longer, special measures must be undertaken to
ensure the protection of the following components
 Airend
 Motors
 Air–oil separator tank
 Rubber hoses
5.2.1 Airend
To prepare the airend for 6-month storage:
 Remove the airend discharge hose/pipe coupling.
 Rotate the drive coupling three times so that the oil
present inside the airend comes out through the
discharge port.
 Block the discharge port completely.
 Remove the inlet rubber duct connected to the intake
valve of the air filter assembly.
 Turn the intake valve flap and pour rust preventive oil
(use Castrol DWX 32 or an equivalent grade) into the
airend through the intake valve.
 Rotate the coupling five times by hand so that the rust
preventive oil spreads all over the bearings, seals and
other parts of the airend.
 Drain the rust-preventive oil by opening the discharge
port plug fully.
 Refit the hose/pipe coupling on the discharge port.
 Take care to ensure that all the openings are plugged
always to avoid dust entry.
 Rotate the compressor shaft once in 7 days and ensure
free rotation.
 Repeat the procedure every six months.
 For more details contact ELGi office or distributer
network.
5.2.2 Motor
To prepare the motor for 1-year storage:
 Check the insulation of the motor winding.
 Remove any moisture in the motor.
 Check junction box terminals for tightness of the wires.
 Apply grease on the motor bearings.
5.2.3 Air-oil separator tank
To prepare the air-oil separator for 2-year storage:
 Drain the oil from the seperator tank.
 Remove the entire tank from the compressor after
disconnecting it from all hoses, the tank top plate, the
minimum pressure valve outlet line, and control pulse
lines and control switches.
 Clean the tank using ELGi compressor clean flushing oil.
 Check the air-oil separator tank.
 Replace the oil filter element similarly.
 Flush the tank, airend with compressor oil and replace
the separator element before using the compressor
again.
5.2.4 Rubber Hoses
Preservation for long idle storage 5.2
Test Recommendations for
Age Recommendations
Up to 3 Use without further testing
3 to 5 years Use after representative samples are
5 to 8 years
Use after representative samples are
subjected to proof, impulse, and burst
pressure tests and cold bend and
Over 8 years Scrap