Flow Diagram [Water-Cooled] - Hitachi NEXT Series Service Manual

2.2 Flow Diagram
2.2.1 Fix speed type
Compressed Air Flow and Oil Flow
Air exhaust
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
3 Gear Case
4 Step-up Gear
5 Main Motor
6 Intercooler
7 Check Valve
8 Aftercooler
9 Air Relief Valve
10 Discharge Port
11 Check Valve
13 Orifi ce
14 Drain Solenoid
15 Y-type Strainer
16 Drain trap
17 Demister
18 Motorized isolation valve
20 Drain separator
Water-Cooled
51
Air exhaust
25
6
7
8
2
3
TH3
4
TH2
32
PS1
TH5
11
1
TH4
PS4
22
31
36
21
Compressed air flow
Capacity Control & Blowoff Air Flow
21 Air Intake Filter
22 Suction Throttle Valve
23 Blowoff Valve
24 Blowoff Silencer
25 Blowoff Cooler
31 Oil Strainer
32 Oil Pump
33 Oil Relief Valve
34 Oil Cooler
35 Oil Filter
36 Temperature Control Valve
38 Oil Drain Valve
39 Oil Mist Remover
Air Flow and Other
51 Fan
52 Enclosure
53 Air Intake Duct
9
PS2
MOHR
5
35
33
15
14
34
13
Aftercooler condensate drain
Lubricating oil flow
Oil Flow
7
18
10
M
Compressed
air discharge
Air intake for
main motor
39
Control air for OMR
Legend of Sensors and Switches
Symbol Part name
Pressure Sensor (discharge air pressure)
PS2
PS4 Pressure Sensor (oil pressure)
PS1 Pressure Sensor (interstage pressure)
TH2 Temperature Sensor (2nd-stage in)
Temperature Sensor (1st-stage out)
TH4
TH3 Temperature Sensor (2nd-stage out)
TH5 Temperature Sensor (oil)
Themostat (for main motor
MOHR
bearing temperature)
Pressure Differential Sensor (For
63SV
suction filter clogging detection)