Flow Diagram; Flow Diagram [Air-Cooled] - Hitachi NEXT Series Service Manual

2. FLOW DIAGRAM

2.1 Flow Diagram
2.1.1 Fix speed type
Compressed Air Flow and Oil Flow
Air exhaust
6
19
52
20
14
17
13
15
Intercooler
condensate
drain
24
23
63SV
53
Air intake for
compressed air
Oil drain
Oil drain
38
Cooling air flow
Legend of the Diagram
Compressor Air Flow
1 1st-Stage Airend
2 2nd-Stage Airend
Gear Case
3
4 Step-up Gear
5 Main Motor
Intercooler
6
7 Check Valve
8 Aftercooler
Air Relief Valve
9
10 Discharge Port
11 Check Valve
13 Orifi ce
14 Drain Solenoid
15 Y strainer
16 Drain trap
17 Demister
18 Motorized Isolation Valve
19 Hi-Precooler (only for 125 psi (0.86 MPa type))
Drain separator
20
Air-Cooled
Air exhaust Air exhaust
7
51 8
54 36
35
2
TH3
3
4
TH2
32
PS1
11
TH5
1
TH4
PS4
22
31
21
Compressed air flow
Capacity Control & Blowoff Air Flow
21 Air Intake Filter
22 Suction Throttle Valve
Blowoff Valve
23
24 Blowoff Silencer
31 Oil Strainer
32 Oil Pump
Oil Relief Valve
33
34 Oil Cooler
35 Oil Filter
Temperature Control Valve
36
38 Oil Drain Valve
39 Oil Mist Remover
Air Flow and Other
51 Fan Motor
52 Enclosure
53 Air Intake Duct
Cooling fan
54
34
PS2
9
MOHR
5
33
15
14
13
Aftercooler condensate drain
Lubricating oil flow
Oil Flow
5
18
10
M
Compressed
air discharge
Air intake for
main motor
39
Control air for OMR
Legend of Sensors and Switches
Symbol Part name
PS2 Pressure Sensor (discharge air pressure)
PS4 Pressure Sensor (oil pressure)
Pressure Sensor (interstage pressure)
PS1
TH2 Temperature Sensor (2nd-stage in)
TH4 Temperature Sensor (1st-stage out)
Temperature Sensor (2nd-stage out)
TH3
TH5 Temperature Sensor (oil)
Thermostat (for main motor
MOHR
bearing temperature)
Pressure Differential Sensor (For
63SV
suction filter clogging detection)