
9
INSTALLATION INSTRUCTIONS (CONTINUED)
Grounding
Improperly grounded electrical components are shock hazards. Make sure 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.
Breakers and Fuses
The entire electrical system should be checked by a certified electrician. Time delay breakers and fuses are
required for this compressor. A tripped breaker or blown fuses may indicate a direct short to ground, high current
draw, improper wiring, incorrect fuse or breaker size and/or type. This needs to be evaluated by a certified
electrician.
Motor Hookup and Starter Installation
Branch circuit protection must be provided as specified in the United States National Electrical Code, 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 have this protection built-in. To
determine 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 protection. No additional protection is
required. Use Figure 5 wiring diagram.
Motors with frame sizes 184T, 215T, 254T or 284T do not have built-in overload protection. A magnetic starter is
required. Use Figure 5 wiring diagram.
MAINTENANCE
/
REP
AIR
TROUBLESHOOTING
OPERA
TION
ASSEMBL
Y
/
INST
ALLA
TION
SAFETY
/
SPECIFICA
TIONS
GETTING ST
ARTED
L1
L2
T2
T1
X2
L1
L2
Pressure
Switch
Thermal
Units (3)
L3
T2
cuit Breaker or
sed Disconnect
X2
Motor
Over
Load
Coil
T3
T1
Figure 5 - Motor Starter Wiring Diagram
Single Phase
Wiring Diagram
Motor
Circuit
Breaker
or Fused
Disconnect
Three Phase
Wiring Diagram
Motor
Coil
Coil
Circuit
Breaker
or Fused
Disconnect
Over
Load
Over
Load
Thermal
Unit
Thermal
Units (3)
Pressure
Switch
Pressure
Switch