070.550-IOM (JUN 2016)
Page 5
NGC GAS ROTARY SCREW COMPRESSOR
INSTALLATION - OPERATION - MAINTENANCE
COMPRESSOR AND PACKAGED EQUIPMENT STORAGE LOG
COMPRESSOR
ROTOR
VISUAL
SHAFT ROTATION
HOUSING
CHARGE INSPECTION
MODEL
SERIAL NO.
1½ TURN
CHARGE
ADDED
PER QAI-3
CHARGE CHECKED BY
DATE
LONG TERM STORAGE
Long term storage (6 months to 5 years) provisions are
required, regardless of storage environment, if start-up
and/or useful operation does not occur within six (6) months
of equipment shipment. Special provisions may be required
for storage of less than six (6) months if the storage area is
subject to unusual environment such as high humidity, large
changes in temperature, dusty atmosphere, etc.
The standard Johnson Controls-Frick Warranty for an NGC
screw compressor covers twelve (12) months from start-up
or 18 months from shipment, whichever comes first. It is
recommended that arrangements be made with the local
Johnson Controls-Frick service organization (arranged
through factory service) regarding surveillance and
maintenance during the storage period. It will be the
customer’s responsibility to submit a monthly report
showing the condition of the unit and noting any
discrepancies to the guidelines listed herein. Failure to
comply with this Long Term Storage Recommendation may
void the warranty.
Long term storage of equipment may lead to the
deterioration of components over the period of time.
Synthetic components in the compressor may deteriorate
over time even if they are kept flooded with oil. A warm and
dry environment is essential to minimize environmental and
corrosion damage. Long term storage of the affected
equipment at a customer’s site may involve additional
requirements and interested parties should refer to the
Johnson Controls-Frick Industrial Refrigeration portal at
www.johnsoncontrols.com
for
specific
instructions
(Location: Bare Compressors\General\Warranties\Screw
Compressor Purchased for Long Term Storage).
NOTICE
The following guidelines must be followed to maintain
the Screw Compressor Warranty.
PREPARING COMPRESSOR FOR STORAGE
1. Evacuate compressor to remove moisture. Evacuation
lines are to be connected to port SM1.
2. Break vacuum with dry nitrogen and bring pressure to
zero psig.
3. Pump oil into the same ports mentioned in step 1.
Johnson Controls-Frick recommends break-in oil P/N
111Q0831809 for storage purposes. Contact the Factory for
the amounts of oil needed per compressor.
4. After compressor is oil charged, pressurize compressor
to 15 psig with nitrogen.
MAINTAINING COMPRESSOR
1. Ensure that the 5-15 psig nitrogen charge is maintained
with 15 psig preferred.
2. Rotate the male rotor shaft every two weeks. Mark the
shaft to ensure the rotor does not return to the original
position.
3. The compressor must be stored inside a dry building
environment.
4. Grease the male rotor shaft to prevent rust.
5. Record all information in a “Compressor Long Term
Storage Log.” See below.
