FIGURE 3
RUN WIRES THROUGH THE BUSHING
UP TO THE CONTROL PANEL
SCREW
PART #1012-085
OUTDOOR TEMP
SWITCH
PART #910-2058
MIS-4053
Manual 7960-847B
Page
4 of 8
13. Replace all panels, grilles and covers. This
completes the installation.
14. Check proper operation of the unit by energizing
the compressor in cooling mode. The condenser fan
motor should start and ramp up speed as system
pressure increases.
Sequence of Operation
Upon initiation, the CMA-38 will apply full voltage to
the fan motor for the time period selected with the Hard
Start knob (see Figure 6). Hard start time is adjustable
from 0.1 to 5 seconds. The hard start ensures correct
rotation of the condenser fan, even in windy conditions.
After a hard start, the control reads the temperature/
pressure sensor and the fan speed is adjusted until the
input temperature/pressure matches the setpoint.
The CMA-38 enables the user to set and adjust the
pressure to be maintained by the control. The setpoint
pressure is adjustable from 35-465 psig.
