Hitachi DSP-45AT6N Service Manual

Contents
1. GENERAL DESCRIPTION
1.1 Appearance [Air-Cooled]…………………………………………………………………………………… 1
1.2 Components [Air-Cooled] ………………………………………………………………………………… 2
1.3 Appearance [Water-Cooled] ……………………………………………………………………………… 3
1.4 Components [Water-Cooled]……………………………………………………………………………… 4
2. FLOW DIAGRAM
2.1 Flow Diagram [Air-Cooled]…………………………………………………………………………
5
2.2 Flow Diagram [Water-Cooled] …………………………………………………………………… 7
2.3 Capacity Control System Standard …………………………………………………………………10
3. MAINTENANCE
3.1 Standard Maintenance Schedule ……………………………………………………………………… 13
3.2 Maintenance Schedule for Oil Mist Remover………………………………………………………… 17
4. HOW TO SERVICE THE AIR COMPRESSOR
4.1 Replacement of Air Intake Filter (Bi-Annually) ……………………………………………………… 18
4.2
Condensate drain port (Intercooler/Aftercooler) (Daily check)
Clean the strainer elements (Bi-Annually) & Orifices (Annually)………………………………… 19
4.3 Lubricating oil Replacement (Annually)……………………………………………………………… 23
4.4 Cleaning of Oil Strainer (Primary Side) (Bi-Annually)……………………………………………… 24
4.5 Replacement of Oil Filter (Secondary Side) (Annually) …………………………………………… 24
4.6 Operation Check of Air Relief Valve (Bi-Annually)…………………………………………………… 25
4.7 Cleaning of Control Line Filter (Bi-Annually) [Fixed speed type]………………………………… 25
4.8 Clean Cooler (Annually) ………………………………………………………………………………… 26
4.9 Replacement of Check Valve (2-Yearly) ……………………………………………………………… 27
4.10 Main Motor Greasing …………………………………………………………………………………… 28
4.11 Maintenance of Main Motor …………………………………………………………………………… 29
4.12 Maintenance of Oil Mist Remover……………………………………………………………………… 30
4.13 Maintenance of Cooling fan and cooling fan motor ……………………………………………… 31
4.14 The procedure to attach the motor cover[Water-Cooled]………………………………………… 32
4.15 Maintenance of Oil Pump ……………………………………………………………………………… 34
4.16 Maintenance of Suction Throttle Valve………………………………………………………………… 37
4.17 Oil Pump motor and Airend removal ………………………………………………………………… 43
4.18 Oil casing and Gear casing removal…………………………………………………………………… 45
4.19 Main motor removal……………………………………………………………………………………… 46
4.20 Replace the Bushing……………………………………………………………………………………… 48
4.21 Pinion Gear Replacement Procedure ………………………………………………………………… 52
4.22 Battery Replacement (6-Yearly)………………………………………………………………………… 54
4.23 Inspection of Thermistor and Pressure Sensor……………………………………………………… 55
5. PARTS LIST  …………………………………………………………………………………………… 57

Hitachi DSP-45AT6N Specifications

General

Brand	Hitachi
Model	DSP-45AT6N
Category	Air Compressor
Language	English