Systematic Refrigerating Cycle Diagram - Toshiba RAV-SP1404AT-E1 Service Manual

3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM

Outdoor Unit
RAV-SP1104AT-E1, RAV-SP1104ATJ-E1, RAV-SP1404AT-E1, RAV-SP1404ATJ-E1
Check joint
Cooling: High pressure
Heating: Low pressure
Accumulator Rotary compressor
(2500cc) (DA422A3F-25M)
RAV-SP1104AT-E1, RAV-SP1104ATJ-E1
Pressure
(MPa)
Pd Ps
Standard 2.57 0.99
Cooling Overload 3.30 1.09
Low load 1.74 0.75
Standard 2.32 0.73
Heating Overload 3.22 1.17
Low load 2.17 0.30
This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp
*
meter becomes 2 times of No. of compressor revolutions (rps).
RAV-SP1404AT-E1, RAV-SP1404ATJ-E1
Pressure
(MPa)
Pd Ps
Standard 2.72 0.90
Cooling Overload 3.34 1.07
Low load 1.75 0.76
Standard 2.59 0.69
Heating Overload 3.13 1.05
Low load 2.40 0.21
* This compressor has 4-pole motor. The value when compressor frequency (Hz) is measured by a clamp
meter becomes two times of No. of compressor revolutions (rps).
TS sensor
TL sensor
Heat exchanger
TD sensor Ø8, 2 rows, 52 stages
FP1.45, flat fin
In cooling operation
In heating operation
Muffler Muffler
Ø25 × L180
Ø25 × L210
Pipe surface temperature (°C)
(kg/cm²g) Discharge Suction
Pd Ps (TD)
26.2 10.1 66
33.7 11.1 78
17.8 7.7 46
23.7 7.4 65
32.9 11.9 73
22.1 3.1 87
Pipe surface temperature (°C)
(kg/cm²g) Discharge Suction
Pd Ps (TD)
27.8 9.2 73
34.1 10.9 80
17.9 7.8 47
26.4 7.0 75
31.9 10.7 72
24.5 2.1 97
TO sensor
TE sensor
Distributor
Strainer
Cooling: Low pressure
Heating: High pressure
Indoor heat Outdoor heat
exchanger exchanger
(TS) (TC) (TL)
14 12 44
9 13 49
7 5 32
3 39 2
19 54 14
–15 38 –14
Indoor heat Outdoor heat
exchanger exchanger
(TS) (TC) (TL)
12 10 46
9 13 51
8 6 33
3 43 2
16 53 12
–22 42 –19
– 17 –
PMV
Strainer
Capillary
Ø4 ×Ø3 (6 pcs.)
Refrigerant pipe
at liquid side Ø9.5
Packed valve
Refrigerant pipe
at gas side Ø15.9
Ball valve
Compressor
drive revolution Indoor
frequency fan
(rps)
(TE)
38 38 HIGH
43 53 HIGH
25 21 LOW
3 43 HIGH
15 26 LOW
–13 71 HIGH
Compressor
drive revolution Indoor
frequency fan
(rps)
(TE)
38 51 HIGH
45 55 HIGH
25 21 LOW
2 53 HIGH
13 26 LOW
–18 90 HIGH
Indoor/Outdoor
temp. conditions
(DB/WB) (°C)
Indoor Outdoor
27/19 35/–
32/24 43/–
18/15.5 –5/–
20/– 7/6
30/– 24/18
15/– –15/–
Indoor/Outdoor
temp. conditions
(DB/WB) (°C)
Indoor Outdoor
27/19 35/–
32/24 43/–
18/15.5 –5/–
20/– 7/6
30/– 24/18
15/– –15/–