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B − Compressor (B1)
The scroll compressors in all XP14 model units are de-
signed for use with HFC−410A refrigerant and operation at
high pressures. Compressors are shipped from the factory
with 3MA (32MMMA) P.O.E. oil. See electrical section in
this manual for compressor specifications.
The scroll compressor design is simple, efficient and requires
few moving parts. A cutaway diagram of the scroll compressor
is shown in figure 9. The scrolls are located in the top of the
compressor can and the motor is located just below. The oil
level is immediately below the motor.
The scroll is a simple compression concept centered around
the unique spiral shape of the scroll and its inherent properties.
Figure 11 shows the basic scroll form. Two identical scrolls are
mated together forming concentric spiral shapes (figure 12).
One scroll remains stationary, while the other is allowed to "or-
bit" (figure 13). Note that the orbiting scroll does not rotate or
turn but merely orbits the stationary scroll.
FIGURE 9
SCROLL COMPRESSOR
DISCHARGE
SUCTION
NOTE − During operation, the head of a scroll compressor may
be hot since it is in constant contact with discharge gas.
FIGURE 10
SOUND COVER
COMPRESSOR
SOUND PAD
FIGURE 11
SCROLL FORM
FIGURE 12
STATIONARY SCROLL
ORBITING SCROLL
DISCHARGE
SUCTION
CROSS−SECTION OF SCROLLS
TIPS SEALED BY
DISCHARGE PRESSURE
DISCHARGE
PRESSURE
