Download Chrysler Airtemp - Dallas Hermetic

Chrysler Airtemp
3000 Series Compressors
Motor Terminal Diagrams
Across the Line Starting
L1 L2 L3
L1 L2 L3
L1 L2 L3
Contactor
Contactor
Contactor
A
B
A
C
Six Motor Leads
Contactor
#1
T'Stat 1
B
A
T'Stat 2
Terminal Plate
Internal Thermostats
Contactor
#2
A
Contactor
#1
B
C
Nine Motor Leads
Module
Power
Control
Circuit
T1
T2
M1
M2
Therm 1
Therm 2
Therm 3
C
L1 L2 L3
Original compressors had a model number
suffix of 00. When suffix was changed to
01 or 02 the motor protection was changed
from internal thermostats to internal
thermistors and an external electronic
module was added. All models were
changed to six motor leads from nine motor
leads. A more compact motor was used on
all models. Unloading sequence of 3000
model was changed before model number
suffix was changed.
Internal Sensors
6 Lead
Nine Motor Leads - High Voltage
Part Winding Starting
Contactor
#2
Six Motor Leads
C
Nine Motor Leads - Low Voltage
L1 L2 L3
B
Terminal Plate
Motor
Protector
Module
Internal Thermistors
Terminal Plate
Thermistor Control Circuit Diagram
With internal thermostat protection connect control circuit to terminals A & B. These terminals should have 100% continuity
when checked with an ohmmeter. If either thermostat opens and fails to close check continuity from A to C and B to C. Connect
control circuit to pair that has continuity. Internal thermistors should read between 65 and 105 ohms depending on their
temperature. Module trip point is 100 ohms. Use a battery operated ohmmeter to check the thermistors. If one of the
thermistors should become defective you may "jump" it with an 80 ohm ¼ watt resistor. This arrangement will reduce motor
protection but will allow the compressor to operate.
8305 Sovereign Row • Dallas, Texas 75247
(800) 647-2665 tel • (214) 634-8227 fax
www.dallashermetic.com
Compressor Reference 2004
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