3
SECTION 1 — INTRODUCTION
The purpose of this manual is to provide instructions
needed to install, operate, and maintain the Ingersoll-
Rand rotary screw air compressor with the Ingersoll Rand
302 Series Variable Frequency Drive (VFD). The
Operators/Instruction Manual supplied with the
compressor and this Instruction Manual supplied with the
Ingersoll Rand 302 Series VFD should be referenced for
more detailed instructions regarding each of these
components.
The Ingersoll Rand 302 Series VFD will maintain a
constant pressure in compressed air systems by
adjusting the compressor motor’s speed to match the
compressed air usage. Depending on the application and
air demand profile, the Ingersoll Rand 302 Series VFD
system can achieve 25-35% energy savings. Smooth
start-up, reduced machine cycling, lower noise, and
monitoring energy parameters are other benefits from an
Ingersoll-Rand compressor equipped with Ingersoll Rand
302 Series VFD.
SECTION 2 — SAFETY
SAFETY PRECAUTIONS
WARNING: Risk of Danger
WARNING: Risk of Electric Shock
WARNING: Risk of High Pressure
WARNING: Consult Manual
• Before installing or operating the Ingersoll Rand
302 Series VFD, take time to carefully read all
the instructions contained in this manual, all
compressor manuals, and all manuals of any
other peripheral devices that may be installed or
connected to the unit.
• Electricity and compressed air have the
potential to cause severe personal injury or
property damage.
• The operator should use common sense and
good working practices while operating and
maintaining this system. All applicable codes
should be strictly adhered to.
• Maintenance must be performed by adequately
qualified personnel that are equipped with the
proper tools.
SHIPMENT INSPECTION / PRE-
INSTALLATION CHECK
• The crating should be inspected for shipping
damage after the unit has arrived.
• Before unpacking the frequency converter it is
recommended that it is located as close as
possible to the final installation site. Remove the
box and handle the frequency converter on the
pallet, as long as possible.
LIFTING
• Always lift the frequency converter in the
dedicated lifting eyes. Use a bar to avoid
bending the lifting holes of the frequency
converter.
INSTALLATION
• Installation work must only be carried out by a
competent person under qualified supervision.
• A fused isolation switch must be fitted between
the main power supply and the Ingersoll Rand
302 Series VFD.
• The Ingersoll Rand 302 Series VFD should be
mounted in such a location as to allow
operational and maintenance access without
obstruction or hazard and to allow clear visibility
of indicators at all times.
• If raised platforms are required to provide
access to the Ingersoll Rand 302 Series VFD,
they must not interfere with normal operation or
obstruct access. Platforms and stairs should be
of grid or plate construction with safety rails on
all open sides.
MECHANICAL INSTALLATION
• Preparation of the mechanical installation of the
frequency converter must be done carefully to
ensure a proper result and to avoid additional
work during installation. Start taking a close look
at the mechanical drawings at the end of this
instruction to become familiar with the space
demands.
• To perform the mechanical installation the
following tools are needed:
o Drill with 10 or 12 mm drill
o Tape measure
o Wrench with relevant metric sockets (7-17
mm)
o Extensions to wrench
o Sheet metal punch for conduits or cable
glands in IP 21/Nema 1 and IP 54 units
o Lifting bar to lift the unit (rod or tube max. Ø
25 mm (1 inch), able to lift minimum 400 kg
(880 lbs)).
o Crane or other lifting aid to place the
frequency converter in position
o A Torx T50 tool is needed to install the E1
in IP21 and IP54 enclosure types.
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