– 13 –
High compressor torque enables the compressor to start against high pressure in the sealed system.
When power has been disconnected from an operating unit, the high torque will enable the compressor
to start immediately upon power restoration.
Compressor and sealed system operation is extremely smooth and cool. The compressor exterior may
be room temperature while operating; therefore a running unit may be difficult to detect.
To verify that the compressor is running:
Disconnect power from the unit and place a hand on the compressor. Reconnect power and feel for a
vibration when the compressor tries to start. It may take up to 8 seconds before the compressor
attempts to start.
To determine motor rpm:
Measure the frequency of the voltage being applied to the compressor and multiply this number by 30.
For example, a frequency measurement of 70 Hz would show a compressor speed of 2100 rpm (30 x
70 = 2100).
Note: If the compressor fails to start, the inverter will briefly stop voltage output. The inverter will make
12 consecutive attempts to start the compressor (once every 12 seconds). If, after 12 attempts, the
compressor has not started, an 8-minute count will occur. After 8 minutes, the inverter will attempt to
start the compressor again. If the compressor starts, normal operation will resume. If the compressor
fails to start, the process will be repeated.
Removing power from the unit will reset the
inverter count. When power is restored, the
inverter will attempt to start the compressor within
8 seconds.
Note:
•
When ordering a replacement compressor,
order both the compressor and inverter.
Replace the compressor first. If, after
compressor installation, the compressor fails
to start, replace the inverter.
•
When servicing the compressor, it is important
to dress the wiring to keep low voltage DC
wiring and 120 VAC wiring separate.
J4-3
J4-
2
J3-
10
BLACK
BROWN
BLUE
BLACK
BLUE
BROWN
ORANGE
ORANGE
O
R
A
N
GE
PURPLE
COMPRESSOR
INVERTER
TA
B
4
BROWN
10
Ω
10
Ω
10
Ω
LOW VOLTAGE DC
CLASS 2 CIRCUITS
MAIN CONTR
O
L BO
ARD
AC
CURRENT-SOURCE
CIRCUIT BOARD
LINE VOLTAGE
6-PIN
CONNECTOR
+12 VDC
COMMON
GEA01260
Summary of Contents for PSH23SGNAFBS Series
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