Atlas Copco MD50 User Manual

2920 1443 01
2
Instruction book
This instruction book describes how to handle and operate the subject machine(s) to ensure safe operation, optimum working
economy and long service life.
Read this book before putting the machine into operation to ensure correct handling, operation and proper maintenance from
the beginning. The maintenance schedule contains a summary of the measures for keeping the dryer in good condition. The
maintenance procedures are simple but must be carried out regularly.
Keep the book available for the operator(s) and make sure that the dryer is operated and that the maintenance actions are carried
out according to the instructions. Record all operating data, maintenance work effected, etc. in an operator's logbook available at
Atlas Copco. Follow all applicable safety precautions, amongst others those mentioned on the cover of this book.
Repair operations must be performed by trained personnel from Atlas Copco, who can also be contacted if any further information
is desired.
In all correspondence always mention the dryer type and the complete serial number, shown on the data plate.
The company reserves the right to make changes without prior notice.
Page
3 Operating instructions . . . . . . . . . . . . . . . . . . . . . . . 31
3.1 Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.2 Routine starting . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.3 During operation . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4 Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.5 By-pass operation . . . . . . . . . . . . . . . . . . . . . . . . 32
4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6 Principal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1 Dryer specifications . . . . . . . . . . . . . . . . . . . . . . 35
6.1.1 Reference conditions . . . . . . . . . . . . . . . . 35
6.1.2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . 35
6.1.3 Typical data . . . . . . . . . . . . . . . . . . . . . . . 35
6.1.4 Specific data . . . . . . . . . . . . . . . . . . . . . . 35
6.2 Conversion list of SI units into British units . . . 42
CONTENTS
Page
1 Leading particulars . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 General description . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Air drying circuit . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2.1 Regeneration air circuit . . . . . . . . . . . . . . . 5
1.2.2 Rotor cooling air circuit . . . . . . . . . . . . . . 5
1.3 Drain system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1 Description . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.2 Testing the EWD . . . . . . . . . . . . . . . . . . . . 5
1.3.3 Electrical connections of the EWD . . . . . . 5
1.4 Electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.1 MD400/800/1300/2500 W VSD . . . . . . . . 8
1.4.2 All other MD dryers . . . . . . . . . . . . . . . . . 8
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.1 Dimension drawings . . . . . . . . . . . . . . . . . . . . . . 16
2.2 Installation proposal . . . . . . . . . . . . . . . . . . . . . . 29
2.3 Cable section and setting of the circuit
breaker of the fan motor on air-cooled dryers . . 30

Atlas Copco MD50 Specifications

General

Brand	Atlas Copco
Model	MD50
Category	Dehumidifier
Language	English