Tecumseh Argus, Руководство по установке

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Remote Condensing Unit Installation Instructions
©2019 Tecumseh Compressor Company LLC. All rights reserved. TPC Part #71511 | Rev A 05/13/2019 www.tecumseh.com
Complaint Possible Causes
A. Compressor will
not start - no hum
1. System component not functioning properly:
• Control/contactor stuck in open position
• Control off due to cold location
• Thermostat not functioning properly
2. Line disconnect switch open
3. Circuit breaker tripped or fuse open or removed
4. Thermal protector not working properly
5. Wiring improper or loose
6. Compressor motor has a ground fault (also known as a short circuit to ground)
B. Compressor
will not start - hums
but trips on thermal
protector
1. Improperly wired
2. Low voltage to compressor
3. System component, such as thermostat or control/contactor,
not functioning properly
4. Compressor electrical problems:
• Compressor motor has a winding open or shorted
• Start capacitor not working properly
• Relay does not close
5. Liquid refrigerant in compressor
6. Internal mechanical trouble in compressor.
C. Compressor starts,
but does not switch off
of start winding
1. Improperly wired
2. Low voltage to compressor
3. Compressor electrical problems:
• Compressor motor has a winding open or shorted
• Relay failing to open
• Run capacitor not working properly
4. Discharge pressure too high
5. Internal mechanical trouble in compressor
D. Compressor starts
and runs, but short
cycles on thermal
protector
1. Too much current passing through thermal protector:
a. Extra sources of current draw
b. Compressor motor has winding shorted
2. Low voltage to compressor (single phase) or unbalanced voltage (three-phase)
3. Compressor electrical problems, such as thermal protector or run capacitor
not working properly
4. Discharge pressure too high
5. Suction pressure too high
6. Return gas too warm
E. Unit runs OK, but run
cycle is shorter than
normal (due to com-
ponent(s) other than
thermal protector)
1. System components, such as thermostat, control or contactor,
not functioning properly
2. High pressure cut-out due to:
a. Insufficient air or water supply
b. Overcharge of refrigerant
c. Air in system
d. Water leak into refrigerant side of a water-utilizing system
3. Low pressure cut-out due to:
a. Liquid line solenoid leaking
b. Undercharge of refrigerant
c. Restriction in expansion device
Troubleshooting
Chart
This trouble-shooting chart
is not designed to replace the
training required for a professional
refrigeration service person, nor
is it comprehensive. As a trained
professional, for your safety and
others always be aware of the
following issues:
• Terminal venting and
electrocution
• Properties of refrigerant and
other chemicals involved
• Proper compressor
removal methods
• Proper system flushing,
purging and leak
testing methods
• Proper system charging
methods
• Proper system
evacuation method
• Start capacitor
overheating issues