Grounding; Motor Hookup And Starter Installation; Direction Of Rotation - Campbell Hausfeld Air compressor Operating Instructions Manual

Air Compressors
Installation (cont.)
Recommended wire sizes may be larger
than the minimum set up by local ordi-
nances. If so, the larger size wire should
be used to prevent excessive line voltage
drop. The additional wire cost is very
small compared with the cost of repair-
ing or replacing a motor electrically
"starved" by the use of supply wires
which are too small.
GROUNDING
electrical components arel
I
shock hazards. Make sure ] _ I
all the components are
properly grounded to prevent death or
serious injury.
This product must be grounded.
Grounding reduces the risk of electrical
shock by providing an escape wire for
the electric current if short circuit
occurs. This product must be installed
and operated with a power cord or
cable that has a grounding wire.
MOTOR HOOKUP AND STARTER
INSTALLATION
Branch circuit protection must be provid-
ed asspecified in the United States
National ElectricalCode, Chapter 2,
"Wiring Design and Protection." Article
210, using the applicable article "For
Motors and Motor Controllers," (Article
430, Table 430-1 52).
IMPORTANT: Overload protection is
required for all motors. Certain motors
Pump _,_
Discharge
Tube
Check Valve
\
Tank
Pressure "
Gauge
isolation Pad
(available separately) "
/
Draincock
Figure 2 - Typical Horizontal Unit Identification
have this protection built-in. To deter-
mine if a motor has built-in overload
protection, refer to the frame size on
the motor nameplate.
Motors with frame size R56HZ,Y56Y or
L143T include built-in overload protec-
tion. No additional protection is
required. Use Figure 3 wiring diagram.
Motors with frame sizes 184T, 2151,
254T or 284T DO NOT have built-in over-
load protection. A magnetic starter is
required. Use Figure 4 wiring diagram.
To change to the alternate voltage
on three phase motors with 230/460
ratings:
1. Rewire motor per data plate on
motor or instruction sheet.
2. Check electric rating of magnetic
starter and replace thermal overload
Safety Valve Access
Motor
Factory Mounted
_" Magnetic Starter (Not on
all units)
Pressure Switch
Tank Shut-off
Valve
(available separately)
Discharge Port '
elements or magnetic starter as
required. The voltage and amperage
ratings are listed on the motor
nameplate.
DIRECTION OF ROTATION
NOTE: Improper rotation will result in
reduced unit life.
The direction of rotation must be coun-
terclockwise (asshown by the arrow on
the flywheel) while facing the flywheel
side of the pump. The motor nameplate
will show wiring information for coun-
terclockwise rotation.
The proper direction is very important.
The direction of rotation of 3 phase
motors can be reversed by interchang-
ing any two motor-line leads. For single
phase motors, refer to the motor name-
plate.
Line
LINE
MOTOR f_
L' Q
PRESSURE
SWITCH
GROUND --1-_ €
Single Phase
Wiring Diagram
Ground
I L3(for 3 phasewiring onJy)
_1
Circuit Breaker or _
Fused Disconnect _,Z ..... {/
I
Pressure Switch
Thelmal
Units (3)
s,og,ophase, T,
Three Phase Single Phase
Wiring Diagram Wiring
Diagram
Figure 3 - For Motor Frame
Sizes R56HZ, YS6Y or L143T.
Refer to Motor Nameplate
IL2
i
:y..@__ Over
Load
• r2
. "-'--,
i M_of !
Circuit Breaker or _ (_ (_
Fused Disconnect I- _- -f_- -if
I I I
Pressure Thermal
Switch _ I_Units (3)
Three Phase ,,
Wiring , Motor '.
Diagram "'---""
Figure 4 - For Motor Frame Sizes 184T, 2151", 254T or 284T. Refer
to Motor Nameplate