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Intermatic CD1-024R Installation Instructions Manual page 2

Surge/brownout/short cycle protective device

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Top
Nipple
AC
Disconnect
Box
Side
(L/R)
24 VAC
Thermostat Wire
Note: Do not mount the
device at the bottom
of the disconnect box
Figure 1. Installing Compressor Defender™ to AC Disconnect Box.
3. Connect the white wire from the Compressor Defender™ to the neutral connection in the panel as
shown in Figure 3.
4. Connect the two black wires to the load side of the circuit breaker that is supplying power to the
compressor/pump as shown in Figure 3.
NOTE: The black wires may be connected to the line or load side from the AC disconnect.
5. Connect the supplied 24 VAC thermostat wire. Splice Compressor Defender™ thermostat control
wires into the Y1 terminal thermostat wire as shown in Figure 4.
6. Ensure all mounting and electrical connections are correct and securely fastened.
7. Reconnect condensing unit power at circuit breaker(s) and at the 24 VAC thermostat circuit. The
green LED flashes to indicate the unit is in short cycle delay.
See Tables 1 and 2 for explanation of LED indicator status.
Neutral/
Line
Line
Ground
Black
White
Black
Line
Line
AC Disconnect
Load
Load
Y1
Compressor Defender™ Maintenance:
NOTE: Both black wires
connect to Line.
Line
AC Voltage SPD:
Line
120 VAC
(BLACK)
• Periodically check Compressor Defender™ to ensure green indicator LED is ON. If green LED is
Neutral
120 VAC
OFF, protection has diminished and the Compressor Defender™ should be replaced immediately.
0 VAC
Ground
120 VAC two wire single phase
with separate ground.
Found at connections for individual
pieces of equipment, such as pumps,
single phase motors, and HVAC
applications.
AC Disconnect Box
Compressor
Defender™ Housing
Typical 208/240 VAC Application
24 VAC
Y1
Figure 3 Installing Surge Protector wiring.
Typical 120 VAC
Application
Line
(BLACK)
Grounded/
Contactor Wiring
Neutral
(WHITE)
24 VAC
Compressor Contactor
Y1
Y1
Figure 4. 24 VAC Contractor Wiring.
Gasket
Locknut
Black Wire
White Wire
Black Wire
24 VAC
Y1
Y1
Line
Neutral
120 VAC two wire single phase
with separate ground.
Found at connections for individual
pieces of equipment, such as pumps,
single phase motors, and HVAC
applications.
From Compressor
Defender™
24 VAC
2
2
Sheet
Metal Screw
Figure 2. Mounting Compressor Defender™
in condensing unit.
Typical 120 VAC Application
NOTE: Both black wires
BLACK
connect to Line.
WHITE
BLACK w/WHITE SLEEVE
24 VAC
Y1
Y1
Y1
C

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