Section 3
SPECIFICATIONS
14
3.2 LUBRICATION GUIDE - STANDARD VACUUMS
Refer to Figure 3-1 for fluid fill port location. Sullair
vacuums are filled with SRF 1/4000 fluid or Sullube
at factory.
SRF 1/4000 and Sullube fluid should be changed
every 4000 hours or once a year, whichever comes
first. The fluid should be changed more frequently
under severe operating conditions, such as high
ambient temperatures coupled with high humidity,
or when high particulate level, corrosive gases or
strong oxidizing gases are present in the air.
For extended life synthetic lubricants contact the
nearest Sullair representative.
Maintenance of all other components is still recom-
mended as indicated in the Operator's Manual.
SRF may not be compatible with certain corrosive
or oxidizing gases. Consult Sullair for lubrication
recommendations in such cases.
When handling gases saturated with water vapor,
condensed moisture and emulsification may occur.
The lubricant must be changed when this condition
exits. If this operational condition exists, a lubricant
with enhanced rust, oxidation and foam inhibiting
characteristics, and enhanced water separation
characteristics should be used. Water must be
drained from the fluid sump periodically. Contact
Sullair for a lubricant recommendation.
Also, when ambient conditions are extreme, the
use of “extended" life synthetic lubricants may be
warranted. Contact Sullair for a recommendation.
3.3 APPLICATION GUIDE
Sullair encourages the user to participate in a fluid
analysis program with the fluid suppliers. This could
result in a fluid change interval differing from that
stated in the manual. Contact your Sullair repre-
sentative for details.
3.4 VACUUM INLET MAXIMUM TEMPERATURE FOR
NO CONDENSATION
Refer to Figure 3-2. Due to the fact that water
vaporizes rapidly in the presence of vacuum, any
application where liquid water is subjected to sys-
tem vacuum must be treated as a saturated or
super saturated gas stream.
Some applications/installations will allow cooling of
the saturated process air between the process and
the vacuum system inlet. In this case, liquid water
will condense and move through the system
towards the vacuum system inlet. The balance of
the process air is still saturated, but at a lower tem-
perature. This saturated air cannot hold any addi-
tional moisture and, therefore, the condensed liquid
water must be removed prior to the vacuum system
inlet.
Example 1:
Inlet Air Temperature = 70°F
Inlet Vacuum = 24” Hg
Point on graph is below both discharge temperature
curves; therefore no condensing issues are pres-
ent.
Example 2:
Inlet Air Temperature = 130°F
Inlet Vacuum = 26” Hg
Point on graph is shows discharge must be at least
190°F to assure no condensing issues.
Example 3:
Inlet Air Temperature = 90°F
Inlet Vacuum = 27” Hg
Mixing of other fluids within the com-
pressor will void all warranties.
Figure 3-1 Fluid Fill Port Location
KEY NO. DESCRIPTION QUANTITY
1 SUMP TANKS 2
2 UPPER SIGHT GLASS 1 / SUMP
3 LOWER SIGHT GLASS 1 / SUMP
4 FLUID FILL PORT 1 / SUMP
5 DRAIN VALVE 1
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