Ingersoll-Rands Models 7100 and 3000 are two
stage. Single acting. air-cooled compressors that do not
require installation on a special foundation They can be
furnished as compact. Self contained, receiver mounted
compressors. automatically regulated and driven by an
electric motor. An air-cooled after cooler along with an
automatic condensate drain trap can be furnished as
optional equipment. They are also sold as a bare or
baseplate mounted compressor
compressed air application requiring minimum air
pressure of 50 PSIG (3.5 kg/cm2) with the maximum
pressure rating for the MODEL 7100 being 250 PSIG
(17.5 kg/cm2). and with the maximum pressure rating
for the MODEL 3000 being 200 PSIG (14.0 kg/cm2).
Application for the Models 7100 or 3000 as either a
primary or supplementary source of air is virtually
unlimited in industrial plants, service stations and auto
repair shops. Supplementary service includes such uses
as furnishing air at pressure rot carried in regular shop
lines. air at isolated locations standby service for air
when larger compressors are shut down.
In addition to the many advantages offered by
compact. Air cooled construction, moderate compressor
speeds large area plate valves, solid-end connecting
rods and positive-acting starting unloading provide long-
life dependability These compressors are equipped with
highly efficient intercooler tubes that provide maximum
resulting in more air per horsepower and less trouble
from oil carbonization. Simplified design permits rapid
access to any part of the unit for inspection or
replacement of parts.
The Model 7100 and Model 3000 are two-stage
machines consisting of one or two first-stage cylinders
with the same bore size and one second-stage cylinder
with a smaller bore size.
This basic principle of operation of these two-stage
compressors are as follows: On the suction stroke of the
first-stage piston(s). air at atmospheric pressure enters
the cylinders through the inlet filter(s) and then the inlet
valves located in the airhead. On the compression
stroke of the first-stage piston(s), the air is compressed
to an intermediate pressure and discharged through the
discharge valves(s) into common manifold(s) From the
manifold(s) the air passes through the intercooler tubes,
where the heat of first-stage compression is removed by
the action of the fan passing cool air over the intercooler
tubes. On the suction stroke of the second-stage piston
this cooled air enters the second-stage cylinder through
the inlet valve. The compression stroke of the second-
stage piston compresses the air to the final discharge
pressure and forces it out through the discharge valve
into the receiver or system. If cooling of the discharge
air is required. an air-cooled aftercooler should be
installed between the compressor discharge and the
receiver or system.
For maintaining the receiver, or system, air pressure
within predetermined limits, the compressor may be
operated with one of two types of regulation. The type of
regulation used depends upon the application. (See
page 9 for a description of the regulation types).
Loadless starting is accomplished by the action of
the centrifugal unloader operating a pilot valve which
opens a line from the compressor second-stage inlet
manifold to atmosphere. (See page 12 for description of
INSTALLATION AND START-UP RECOMMENDATIONS
Unload the compressor from delivering vehicle - the
purchaser must arrange for adequate lifting equipment at
the job site.
The purchaser assumes title to the
equipment, It should be inspected
occurred during the shipment. If
inspector from the carrier Ask him
how to file a claim for damages
Check compressor nameplate to be sure the unit is
the model and size ordered. Do this before uncrating.
Check Receiver Nameplate to be sure the tank Is
adequate for pressure at which you intend to operate.
Check motor nameplate to be sure motor is suitable
for your electrical conditions (Volts-Phase-Hertz).
Do Not Use Triple Voltage 3 Phase
Motor For 200-208 Voltage 3 Phase
Application Must Use 200 Volt Motor
LOCATION & FOUNDATION