12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
www.enviro-ok.com
www.safran‐
passenger
‐solutions.com
Copyright © 2020
Original Release
ATA 21‐00‐60
Page | 47
STORAGE
13. STORAGE PROCEDURES
13.1.
General:
13.1.1. This section defines the procedures and requirements necessary if the Compressor
assembly is to be stored and not installed onto aircraft immediately. In addition, this
section defines the procedures and requirements for operation on the aircraft during the
cold winter months when the system is not typically needed or used. These requirements
are needed to maintain a thin film of oil on the Compressor shaft dynamic seal to prevent
leakage.
13.2.
System Long Term Shelf Storage:
13.2.1. If unit will be stored for periods in excess of 12 months, the following preventive
maintenance should be followed for the compressor. These procedures should be
performed at 12 months from MFG date on unit and every 6 months thereafter for a
maximum of 36 months.
NOTE
: When installing unit with MFG date in excess of 12 months prior to installation date, verify record of
preventive maintenance. If no maintenance record exists, contact Enviro Systems Inc. prior to installation.
13.2.2. For internal pressures within a range of 5-15 PSIG, rotate compressor by hand through
a minimum of 10 revolutions.
13.2.3. For internal pressures below 5 PSIG, system should be pressurized to 15 PSIG using
regulated dry Nitrogen. After pressurizing the system, rotate the compressor by hand
through a minimum of 10 revolutions.
13.2.4. If the system does not have any detectable pressure, the compressor oil must be
checked for contamination using the following procedures:
13.2.4.1.
Remove compressor oil plug and insert a clean tie strap into oil fill hole. Remove the
strap to inspect the oil. Oil should have a clear to amber color. If oil shows specs of black
or other contamination, compressor oil should be drained and replaced.
