3
INSTRUCTION MANUAL
Congratulations on the purchase of your QAS108 AC gene-
rator. It is a solid, safe and reliable machine, built according
to the latest technology. Follow the instructions in this book-
let and we guarantee you years of troublefree operation.
Please read the following instructions carefully before start-
ing to use your machine.
While every effort has been made to ensure that the infor-
mation in this manual is correct, Atlas Copco does not as-
sume responsibility for possible errors. Atlas Copco re-
serves the right to make changes without prior notice.
CONTENTS
Safety precautions for generators QAS...............................................................4
Leading particulars............................................................................................................................................5
General description
.........................................................................................................................................5
Bodywork
.............................................................................................................................................................................6
Markings
...............................................................................................................................................................................6
Drain plugs and filler caps
.................................................................................................................6
Battery switch
..............................................................................................................................................................6
Control and indicator panel
..............................................................................................................6
Output terminal board
.................................................................................................................................8
Operating instructions...............................................................................................................................8
Installation
..........................................................................................................................................................................8
Connecting the generator
....................................................................................................................9
Before starting
.......................................................................................................................................................10
Starting
................................................................................................................................................................................10
During operation
...............................................................................................................................................10
Stopping
...........................................................................................................................................................................10
Maintenance.................................................................................................................................................................11
Maintenance schedule
..........................................................................................................................11
Measuring the alternator insulation resistance
........................................11
Engine maintenance
..................................................................................................................................11
Storage of the generator...................................................................................................................12
Storage
................................................................................................................................................................................12
Preparing for operation after storage
........................................................................12
Checks and trouble shooting.................................................................................................12
Checking voltmeter P4
..........................................................................................................................12
Checking frequencymeter P5
..................................................................................................12
Checking ammeters P1, P2 and P3
..............................................................................12
Alternator trouble shooting
............................................................................................................13
Engine trouble shooting
......................................................................................................................13
Options available for QAS108 units.........................................................................15
Overview of the electrical options
....................................................................................15
Description of the electrical options
............................................................................15
Overview of the mechanical options
...........................................................................21
Description of the mechanical options
...................................................................21
Technical specifications....................................................................................................................23
Readings on gauges
.................................................................................................................................23
Settings of switches
....................................................................................................................................23
Specifications of the engine/alternator/unit
....................................................23
Specifications of the options
......................................................................................................23
Circuit diagrams..............................................................................................................................................267
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