–53–
1
Time required for recovering refrigerant from low pressure service port (minute)
0.34~0.44
0.44~0.54
0.54~0.74
(49.8~64)
(64~78.2)
(78.2~106.7)
1 (35.2)
4.0
3.5
3.5
2 (70.4)
8.0
7.0
6.5
3 (105.6)
12.0
10.5
10.0
4 (140.8)
16.0
14.0
13.0
5 (176)
20.0
18.0
16.5
6 (211.2)
24.0
21.5
19.5
7 (246.4)
28.0
25.0
23.0
8 (281.6)
32.0
28.5
26.0
9 (316.8)
36.0
32.0
29.5
10 (352)
40.0
35.5
32.5
11 (388.8)
44.0
39.0
36.0
2
Additional evacuation and refrigerant replacement
R2 series has unique refrigerant circuit structure which makes possible 2-pipe cooling-heating simultaneous
operations. Therefore, in the case of total replacement or replenishment of refrigerant in this system, the following
evacuation and refrigerant replenishment procedures are required.
1
Perform evacuation by connecting to system analyzer joint of service port of high pressure ball valve and high
pressure charge plug, and joint of service port of low pressure ball valve and low pressure charge plug.
2
Perform refrigerant charge from low pressure circuit only, after finishing evacuation, closing vacuum pump valve,
shutting off high pressure circuit of system analyzer, and opening valve of refrigerant cylinder.
(In case service port of ball valve and charge plug can not be joined as shown in the figure, use two vacuum
pumps and evacuate high pressure side and low pressure side circuits separately.)
Note 1: Though refrigerant gas itself is harmless, airtight room should be opened before gas release for preventing
oxygen shortage.
2: When releasing gas, use blotting paper, etc. so that oil spouted with the gas does not spread out.
A
Ball valve of the high pressure side
B
Service port
C
Ball valve of the low pressure side
D
Charge plug
E
High pressure
F
Low pressure
G
Evacuation
H
Evacuation
I
Replenish of refrigerant
J
System analyzer
K
Lo knob
Low pressure
MPa (psi)
Refrigerant amount
to be drawn out kg (oz)
K
G
H
I
J
P
O
R
M
S
T
L
N
A
B
C
F
E
D
L
Hi knob
M
3-way joint
N
Valve
O
Valve
P
Flon 22 cylinder
R
Scale
S
Vacuum pump
T
A high-precision gravimeter measurable up to 0.1kg
(3.5oz) should be used. If you are unable to prepare
such a high-precision gravimeter, you may use a
charge cylinder.
Summary of Contents for PURY-100TMU
Page 8: ... 7 Controller Box ...
Page 11: ... 10 G A board CNIPM1 CN15V1 CNDR1 CNE CNDC1 Power board ...
Page 13: ... 12 RELAY 10 board RELAY 4 board ...
Page 14: ... 13 2 Refrigerant Circuit Diagram and Thermal Sensor ...
Page 15: ... 14 3 Electrical Wiring Diagram 1 MC P N ...
Page 17: ... 16 3 CMB 108 1010NU F ...
Page 18: ... 17 4 CMB 1013 1016NU F ...
Page 71: ... 70 Motor Compressor G A board Red U V W N P White Blue Blue Capacitor C1 Red IPM ...
