Principal Parts And Functions - Mitsubishi Electric PURY-P72 Service Handbook
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Also See for PURY-P72:
- Service handbook (412 pages) ,
- Service handbook (404 pages) ,
- Service handbook (403 pages)
Table of Contents
[ VI Refrigerant Circuit ]
[2] Principal Parts and Functions
1. Outdoor unit
Part
Symbols
name
(functions)
Com-
MC1
pressor
(Comp1)
High
63HS1
pres-
sure
sensor
Low
63LS
pres-
sure
sensor
Pres-
63H1
sure
switch
Thermis-
TH4
tor
(Discharge)
HWE0803A
Notes
Usage
Adjusts the amount of circulating
refrigerant by adjusting the operat-
ing frequency based on the oper-
ating pressure data
1) Detects high pressure
2) Regulates frequency and pro-
vides high-pressure protec-
tion
1) Detects low pressure
2) Provides low-pressure pro-
tection
1) Detects high pressure
2) Provides high-pressure pro-
tection
1) Detects discharge air temper-
ature
2) Provides high-pressure pro-
tection
0°C[32°F] :698kohm
10°C[50°F] :413kohm
20°C[68°F] :250kohm
30°C[86°F] :160kohm
40°C[104°F] :104kohm
50°C[122°F] : 70kohm
60°C[140°F] : 48kohm
70°C[158°F] : 34kohm
80°C[176°F] : 24kohm
90°C[194°F] :17.5kohm
100°C[212°F] :13.0kohm
110°C[230°F] : 9.8kohm
- 116 -
Specifications
P72 model
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] :
0.268ohm (THMU)
0.981ohm (YHMU)
P96, P120 models
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] :
0.161ohm (THMU)
0.583ohm (YHMU)
Pressure
63HS1
0~4.15 MPa [601psi]
Vout 0.5~3.5V
1 2 3
0.071V/0.098 MPa [14psi]
Pressure [MPa]
Con-
=1.38 x Vout [V]-0.69
nector
Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145
1
GND (Black)
2
Vout (White)
3
Vcc (DC5V) (Red)
Pressure
63LS
0~1.7 MPa [247psi]
Vout 0.5~3.5V
1 2 3
0.173V/0.098 MPa [14psi]
Pressure [MPa]
Con-
=0.566 x Vout [V] - 0.283
nector
Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145
1
GND (Black)
2
Vout (White)
3
Vcc (DC5V) (Red)
4.15MPa[601psi] OFF setting
Degrees Celsius
R
= 7.465k
120
R
= 4057
25/120
R =
t
1
1
7.465
exp
4057
393
Check method
Resistance
check
GB
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