4
WARNING:
The compressor must be grounded. Grounding reduces the risk of electric shock. This product must be
connected to a grounded, metallic, permanent wiring system, or an equipment-grounding terminal or
lead on the product. Certain C-Aire models are equipped with a cord that has a grounding wire with a
grounding plug. The plug must be plugged into an outlet that is installed and grounded in accordance
with all local codes and ordinances.
WARNING:
Improper installation of the grounding plug will result in a risk of electric shock. When repair or
replacement of the cord or plug is required, do not connect the grounding wire to either flat-blade
terminal. The insulated wire with a green outer surface and yellow stripes is the grounding wire.
WARNING:
Duplex compressors: this product has more than one connection to the power supply. To reduce the risk of
electrical shock, disconnect all such connections before servicing.
NOTE:
The installation, electric motor, wiring, and all electrical controls must be in accordance with NFPA 70-1996 National
Electric Code, National Electric Safety Code, and state and local codes. Failure to abide by the national, state, and local
codes may result in physical harm and/or property damage.
DANGER:
High voltage may cause personal injury or death. Disconnect and lockout/tagout, per OSHA regulation
1910.147, all electrical power supplies before opening the electrical enclosure or servicing.
DANGER:
Never assume a compressor is safe to work on if it is not operating. It could restart at any time. Always
disconnect/lockout/tagout before servicing.
Magnetic Starter:
If the compressor is equipped with a magnetic starter, the starter must be installed in accordance with
the wiring diagrams in this manual.
Pressure Switch:
If the compressor is NOT equipped with a magnetic starter, refer to the wiring diagrams below.
WIRING DIAGRAMS
(For units without Magnetic Starters)
STANDARD PRESSURE SWITCH
Wire to power source
Wire to power source
Wire to motor
ADJUSTABLE PRESSURE SWITCH
Wire to power source
Wire to power source
Wire to motor
On At 70PSI, Off At 100PSI
On At 370PSI, Off At 40PSI
(WIRING DIAGRAMS CONTINUED ON PAGE 5 AND 6)
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