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13-8-639 Page 16
AIR-COOLED UNIT
- A combination oil/aftercooler is supplied as standard equipment on all air-cooled
units. The air-cooled unit with the standard enclosure requires sufficient flow for the compressor
oil/aftercooling system and electric motor cooling (Figure 2-3 below). Air is drawn into the unit above the
motor and discharged through the cooler. Do not block the air flow to and from the unit. Allow three and
one half (3-1/2) feet to the nearest obstruction on the starter end and control box end of the unit. Allow
three (3) feet to the nearest obstruction above and on other sides of unit.
For continuous efficiency, oil cooler cores must be periodically cleaned with either vacuum or compressed
air. If wet cleaning is required, shield motor, spray on a mild soap solution and flush with clean water.
WARNING
For aluminum oil coolers, do not use any cleaning solution that is not
compatible with aluminum. Use of improper solution may result in damage to
the cooler.
Minimum Air Flow* For Compressor
And Cooling (Cubic Feet/Minute)
Air Cooled
All Models
1000 cfm
* 80
°
F Inlet Air
Figure 2-3 – AIR FLOW CHART
FOUNDATION
- The rotary screw compressor requires no special foundation, but should be mounted on
a smooth, solid surface. Whenever possible install the unit near level. Temporary installation may be
made at a maximum 5
°
angle lengthwise or 5
°
sidewise. Mounting bolts are not normally required.
However, installation conditions such as piping rigidity, angle of tilt, or danger of shifting from outside
vibration or moving vehicles may require the use of mounting bolts and shims to provide uniform support
for the base. Belt alignment and tension should be checked after installation. (For information on belt
alignment and tension, see Section 7, page 58.
OIL RESERVOIR DRAIN
- The oil drain is piped from the bottom of the reservoir through a shutoff valve.
A plastic tube is connected to the shutoff valve for draining the oil.
CAUTION
If the compressor unit base is raised above floor level, the space between the
floor and the base bottom must be closed with solid material all around to
prevent recirculation of hot air from the oil cooler end and over temperature
operation.
ENCLOSURE
- The compressor, electric motor, oil cooler and aftercooler are mounted inside the
enclosure.
Service panels are provided for maintenance access. Be sure to allow enough space around the unit for
the panels to be removed. Any of the enclosure panels may be removed by opening the top, removing
the screw on the lower left panel and lifting the enclosure panel up to disengage it from the base and the
other enclosure panel. The screw is removed by twisting it a half turn and pulling it out
Summary of Contents for INTEGRA EFA99F
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