©2021 Micro-Air corp.
4
rev. 1.06
Step 3: Identify the capacitor terminals
Three terminal run capacitors
HERM
FAN
C
Many compressors have three
terminal group capacitors as
shown in figure 1. These capacitors feature labels on the top as indicated by the arrows above. Use the
labels on these capacitors to identify where to make connections.
Two terminal run capacitors
Wire to contactor and capacitor
Two terminal group caps are harder to identify the terminals
because they are not labeled. Look for a wire that connects the
contactor to the capacitor like the red one shown in figure 3. This
wire is connected to the “C” terminal and will be left in place. The
other unmarked terminal is the HERM terminal. For the remainder of
this document, we will refer to the HERM terminal and C terminal for
all types of capacitors.
Figure 2
Figure 3
