Functions Of Principal Parts - Mitsubishi PWFY-P36NMU-E-BU Service Handbook

[3]

Functions of Principal Parts

1. Unit
Symbols
Part
(functions)
Name
Compres- MC1
sor
High
63HS
-pressure
sensor
Low
63LS
-pressure
sensor
Pressure
63H1
switch
Thermistor TH11
(Discharge)
TH13
TH6
(Inlet water
temperature)
TH22
TH23
TH8
(Outlet water
temperature)
THHS
Heat sink
Inverter
heat sink
temperature
Notes Usage
Adjusts the amount of circulating
refrigerant by adjusting the operating
frequency based on the operating
pressure data
1) Detects high pressure
2) Regulates frequency and provides
high-pressure protection
1) Detects low pressure
2) Provides low-pressure protection
1) Detects high pressure
2) Provides high-pressure protection
1 Detects discharge temperature
2 Protects high pressure
0˚C [32˚F] : 698kΩ
10˚C [50˚F] : 413kΩ
20˚C [68˚F] : 250kΩ
30˚C [86˚F] : 160kΩ
40˚C [104˚F] : 104kΩ
50˚C [122˚F] :
60˚C [140˚F] :
70˚C [158˚F] :
80˚C [176˚F] :
90˚C [194˚F] : 17.5kΩ
100˚C [212˚F] : 13.0kΩ
110˚C [230˚F] : 9.8kΩ
For LEV2 control
Controls compressor suction
superheat based on the difference
with the saturation temperature
yielded from the TH13 and 63LS
values.
Detects inlet water temperature
Controls LEV1, using TH22, TH23
Detects water temperature at the
outlet
Controls inverter cooling fan, using
THHS temperature.
Specifications
High-pressure shell rotary
compressor
20˚C[68˚F] : 0.583Ω
63HS
1 2 3
Con-
nector
63LS
1 2 3
Con-
nector
3.60MPa[522psi] OFF setting
R =7.465kΩ
120
R =4057
25/120
Rt =
7.465exp{4057(
70kΩ
48kΩ
34kΩ
24kΩ
R =15kΩ
0
R =3460
0/80
Rt =
15exp{3460(
0˚C [32˚F]
10˚C [50˚F]
20˚C [68˚F]
25˚C [77˚F]
30˚C [86˚F]
40˚C [104˚F] : 3.1kΩ
R =17kΩ
0
R =4170
25/120
Rt =
17exp{4170(
0˚C [32˚F]
10˚C [50˚F]
20˚C [68˚F]
25˚C [77˚F]
30˚C [86˚F]
40˚C [104˚F] : 26kΩ
- 36 -
Check method
Pressure
0~3.60 MPa [522psi]
Vout 0.5~3.5V
0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69
Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145
1 GND (Black)
2
Vout (White)
3
Vcc (DC5V) (Red)
Pressure
0~1.7 MPa [247psi]
Vout 0.5~3.5V
0.173V/0.098 MPa [14psi]
Pressure [MPa]
=0.566 x Vout [V] - 0.283
Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145
GND (Black)
1
2
Vout (White)
3
Vcc (DC5V) (Red)
Resistance value
check
1 1
- )}
273+t 393
Resistance value
check
1 1
- )}
273+t 273
: 15kΩ
: 9.7kΩ
: 6.4kΩ
: 5.3kΩ
: 4.3kΩ
1 1
- )}
273+t 323
: 181kΩ
: 105kΩ
: 64kΩ
: 50kΩ
: 40kΩ