MAINTENANCE
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11.9.
REFRIGERANT CYCLE DIAGRAM OF HITACHI AIR-COOLED WATER CHILLER (RCUE
40,80AG1)
No.
Name
No.
Name
1
Compressor
12
Pressure Relief Valve
2
Air Cooled Condenser
13
Sight Glass
3
Water Cooler
14
Compressor Safety Valve (Option)
4
Drier Strainer
15
Stop Valve (Option)
5
Expansion Valve
16
Stop Valve (Option)
6
Check Valve
17
Compressor Dual Safety Valve (Option)
7
Stop Valve (with check Joint)
A
High Pressure Gauge
8
Stop Valve
B
Low Pressure Gauge
9
High Pressure Switch
C
Stop Valve
10
Pressure Sensor (Low)
D
Charging Cylinder
11
Pressure Sensor (High)
E
Vacuum Pump
NOTE:
R407C shall be charged by LIQUID.
Chilled Water Inlet
Chilled Water Outlet
Option
Option
Option
Option
Gauge
Manifold
Unit Side
Charging Evacuation
