PTEC-M-1A
34
Component
Tests
Ground Test
With no power and compressor
leads removed:
Set an ohmmeter on its highest
scale. Touch one lead to the
compressor body (clean point of
contact, as a good connection is a
must) and the other probe to each
compressor terminal in turn. If a
reading is obtained, then the
compressor is grounded and must
be replaced.
If the voltage, capacitor, overload
and motor windings test fail to show
the cause for failure.
1. With no power, wire a test cord to
line voltage (L1 & L2).
Note: The wire size of the test cord
must equal the line size, and the
fuses in the test line must be of the
proper size and type.
2. Connect a good capacitor of the
right MFD and voltage rating into
the circuit as shown.
3. Carefully apply line voltage.
a. If the compressor starts and
continues run, the cause for failure
is somewhere else in the system.
b. If the motor fails to start - replace.
Since all single phase
compressors are of the
permanent split capacitor design
the high and low side pressure
must be approximately equal or
the low torque compressor may
not start.
Compressor Ground Test
Test Cord Connections
To Next Page
Loading...
