Introduction; Description Of Components; Compressor Unit - Sullair DR13 125H Operator's Manual And Parts List

4.1 INTRODUCTION

Your Sullair DR---13, rotary screw air compressor
will provide you with improved reliability and re-
duced maintenance.
Read Section 7 (Maintenance) to keep your com-
pressor in top operating condition. Should any
questions arise which cannot be answered in the
following text, call your nearest Sullair office or the
Sullair Corporation Service Department.
IMPORTANT --- Your DR---13 compressor package
utilizes a simple to operate yet sophisticated com-
puterized controller identified throughout this doc-
ument as the Supervisor II. All pertinent use of this
device is covered herein. Carefully familiarize your-
self with it before attempting to operate the machin-
ery.

4.2 DESCRIPTION OF COMPONENTS

Refer to Figure 4---1. The standard package in-
cludes a two -- stage compressor and gear box
assembly, an electric motor and driveline sys-
tem, a Supervisor II control assembly, an inlet
air system, low pressure (LP) and high pressure
(HP) silencing/discharge air systems, air cool-
ing system, a load/unload control system, an oil
Figure 4 ---1 Description of Components (Typical)
HIGH PRESSURE
SILENCER
CONTROL
CYLINDER
HIGH PRESSURE

COMPRESSOR UNIT

OIL SUMP
TANK
CHECK VALVE
LOW PRESSURE
COMPRESSOR UNIT
COMPRESSOR SYSTEMS
lubrication and cooling system, and a sound at-
tenuating enclosure, all mounted on a fabricated
steel frame.
Air---cooled heat exchangers are used on all mod-
els. A motor driven fan is used to ventilate the interi-
or of the sound attenuating enclosure. The Super-
visor II assembly is easily accessible for servicing
behind a hinged and locked separate enclosure
panel door.
4.3 COMPRESSOR UNIT, FUNCTIONAL DESCRIP-
TION
Sullair DR---13 compressors feature a two---stage,
oil free, rotary screw design. The rotor profiles and
stators, which are protected with anti---corrosion
coatings, deliver near pulse---free compressed air
to meet your demands.
mounted on anti---friction bearings and are sealed
by floating carbon ring/stainless steel cage assem-
blies. Both stages are driven by a common bull
gear and speed optimized individual pinions, and
are precisely mounted to the rigid gear box. Timing
gears synchronize each male/female rotor pair for
contact---free operation. Variations of compressor
speed, and ultimately flow capacity, are deter-
mined by the ratio of pinions--- to---bull gear set
THERMAL
VALVE
Section 4
The rotor shafts are
COOLING FAN
MOTOR
AIR
FILTER
COMPRESSOR
UNIT MOTOR
AIR INLET
VALVE
9