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Instruction Manual Oil-Less Compressors ELECTRICAL SUPPLY REQUIREMENTS

The electrical installation of this unit should be performed by a
qualified electrician with knowledge of the National Electrical
Code (N.E.C.), O.S.H.A. code and/or any local or state codes
having precedence.
Before installation, the electrical supply should be checked for
adequate wire size and transformer capacity. A suitable circuit
breaker or fused disconnect switch should be provided. When
a 3-phase motor is used to drive a compressor, any
unreasonable voltage imbalance between the legs must be
eliminated and any low voltage corrected to prevent excessive
current draw. Note: This unit must be grounded.
The installation, electric motor, wiring, and all electrical controls
must be in accordance with NFPA 70-1 84 National Electric
Code, National Electric Safety Code, state and local codes.
Failure to abide by the national, state and local codes may
result in physical harm and/or property damage. Do not by-
pass motor overcurrent protection.

DANGER!

High voltage may cause personal injury or death, per
O.S.H.A. regulations 1910.137, disconnect and
lockout/tagout all electrical Dower supplies before
opening the electrical enclosure or servicing.
WARNING!
Never assume a compressor is safe to work on just
because it Is not operating. It could restart at any time.
Follow all safety precautions outlined. NEMA electrical
enclosures and components must be appropriate to the
area Installed.
START-UP PROCEDURES
If the compressor is equipped with an automatic start-stop
control (with pressure switch unloading), it is automatically
unloaded upon starting, and will automatically load after
attaining running speed. If the compressor is equipped with a
constant speed control (pilot valve unloading), it is necessary to
manually unload the compressor, if there is pressure in the
discharge line, in order to achieve an unloaded start. The
compressor must be manually loaded after the compressor has
attained full running speed; thereafter, it functions automatically
to maintain operation pressure until the unit is shut off.
Close the disconnect switch and start the compressor.
Observe the direction of rotation, which should be
counterclockwise when viewed from the flywheel side of the
compressor on all models. For single-phase units, the
direction of rotation is determined by the motor nameplate
instructions, and is adjusted at the factory. For three-phase
units, if the rotation is incorrect, stop the unit and interchange
any two of the three wires to the motor at the disconnect
switch. This will reverse the direction of rotation of the motor
and compressor .

AIR INLET SYSTEM

AIR INTAKE

A clean, cool and dry air supply is essential to the satisfactory
operation of your Curtis-Toledo air compressor. The standard
air filter that the compressor is equipped with when leaving the
factory is of sufficient size and design to meet normal
conditions, when properly serviced, in accordance with the
maintenance section of this manual.
If, however. the compressor is to be installed in a location
where considerable dust, dirt and other
contaminants are prevalent, consult your Curtis Toledo
Distributor for advice and optional filters. It is the User's
responsibility to provide adequate filtration for those conditions.
Oil bath filters are not to be used. Warranty will be void if a
failure is determined to be caused by inadequate filtration.