replacing a competitor’s product with a Summit product, a minimal amount of
time spent implementing a few checks can greatly increase the customer’s
satisfaction with the Summit product and avoid potential problems. The
following steps should be considered when replacing products in circulating
systems such as rotary screw compressors.
Verify Summit replacement product is right for the intended application.
Determine the condition of the competitor product through used oil analysis
which includes the total acid number (TAN). Analyze the used oil results to
determine if possible problems currently exist.
oil analysis indicates a TAN :
less than 5:
for compatible fluids go to step four.
With incompatible fluids, use a flushing procedure before going to step
5 and 10: use Summit’s VARNASOLV
to clean the compressor. Go to step four with compatible fluids. With
incompatible fluids, use a flushing procedure before going to step four.
between 10 and 20:
two cleanings with Varnasolv may be necessary. For the second cleaning, the
unit should be filled to the minimum fill level with the Summit replacement
product and 10% VARNASOLV added.
Another lubricant suitable for use in the
application and compatible with the replacement product may be substituted
for the replacement product for the second cleaning. This option may be
desirable if it is more cost effective. Go to step four.
Greater than 20:
Drain the existing fluid while still warm and fill with the Summit
replacement product. Drain as much of the existing fluid as possible in
order to minimize contamination of the Summit product. Replace all relevant
Obtain an oil sample after the Summit replacement fluid has been in
operation for 200 to 300 hours to monitor the status of the fluid.
NOTE: “flushing” is the use of
an intermediate fluid to remove as much of an incompatible product as
possible. Drain the existing fluid from the compressor and fill to the
minimum fill level with a diester based product or the replacement product.
Run in the compressor for a minimum of 30 minutes. Perform step four.