FIGURE 8
10HP12
ROTARY COMPRESSOR
COMPRESSOR IS MANUFACTURED BY
TECUMSEH PRODUCTS
Page 6
B – Compressor
Table 4 shows the specifications of compressors used
in 10HP series units.
Voltage
TABLE 4
Unit
Phase
LRA
RLA
Oil fl.oz.
10HP18
10HP30–2
10HP48
1
1
1
49
75.0
135
45*
65*
32*
6.8
13.7
19.0
10HP12
1
26.3
4.8
10HP60
1
147
24.0
65*
15**
208/230
10HP42
1
102
55*
20.4
10HP36 (CAN)
1
40*
10HP24
1
61
32*
9.2
208/230
208/230
208/230
208/230
208/230
208/230
208/230
10HP COMPRESSOR SPECIFICATIONS
**Shipped with 60% Zerol 300—40% Sontex 200LT. Zerol 300 may be used
if additional oil is required.
*Shipped with conventional white oil (Sontex 200LT) or 3GS. 3GS oil may
be used if additional oil is required.
10HP36
1
86.7
54*
14.2
208/230
94
14.5
10HP30-1
1
71.0
32*
11.7
208/230
10HP36-4
1
96
55*
16.2
208/230
1 – Rotary Compressor (10HP12 Units Only)
10HP12 units utilize a hermetically sealed rotary-type
compressor manufactured by Tecumseh Products. It is
illustrated in figure 8.
The compressor has four
moving parts: a rotor
shaft, eccentric, roller
and a blade. See figure 9.
The compressor rotor
shaft is attached directly
to the compressor motor.
The rotor shaft is
permanently attached to
an eccentric. The
eccentric is inside the
roller and as the eccentric
rotates, the roller rotates.
The spring loaded blade
is in continuous contact
with the roller. The
contact and a thin layer of
oil form a seal separating
the suction port from the discharge port at all times.
ROLLER
FIGURE 9
BLADE
ECCENTRIC
ROTARY COMPRESSOR INTERNALS
ROTOR
SHAFT
Figure 10 illustrates the four steps in a rotary
compressor’s continuous intake cycle. The spring-loaded
blade is compressed fully at the beginning of an exhaust
cycle. At this instant the compression is beginning (1).
The roller rotates and compression continues (2). The
suction port is always separated from the discharge port
(3). Intake continues and the compressed vapor is
discharged (4).
ROTARY COMPRESSOR OPERATION
COMPLETION
OF INTAKE
1
2
3
4
COMPRESSION
CONTINUES
AND
DISCHARGE
BEGINS
COMPRESSION
CONTINUES
COMPRESSED
VAPOR
DISCHARGED
BEGINNING OF
COMPRESSION
INTAKE
CONTINUES
FIGURE 10
INTAKE
CONTINUES
INTAKE
CONTINUES
a – Suction Muffler (10HP12 Units Only)
All 10HP12 units are equipped with a suction
muffler that is externally mounted on the
compressor shell and attached to the suction
line. The muffler contains two wire mesh
filters for added compressor protection. Refer
to figures 1 and 20.
2 – Accumulator
All 10HP12, 42, 48 and 60 units are equipped with an
accumulator that is mounted in the suction line. The
accumulator protects the compressor from liquid
slugging. Refer to figures 1 and 21.
3 – Reciprocating Compressor (all other units)
All units except the 10HP12 units utilize a conventional
reciprocating compressor.
4 – Crankcase Heater
A crankcase heater is used on all 10HP18 through 10HP60
models. The well-mounted insertion-type heater is
self-regulating. See table 5 for crankcase heater
specifications. Crankcase heater is optional for 10HP12.
Unit
10HP18, 24 and 30
10HP36 (CDN)
10HP CRANKCASE HEATER RATINGS
TABLE 5
Rating (Watts)
19 watts
27 watts
10HP36
30 watts
40 watts
10HP36–4, 42, 48 and 60
