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Atlas Copco ZR 275 - Page 262

Atlas Copco ZR 275
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Regulation valves for ZT Full-Feature compressors with dryer by-pass
1. On Full-Feature compressors without dryer by-pass, close regulation valve (1). On Full-Feature
compressors with dryer by-pass, open shut-off valve (2) and close regulation valve (1). Open the
dryer inlet and outlet valves (Vdi and Vdo) and close the dryer by-pass valve (Vdb).
2. Start the compressor and wait (for at least 5 minutes) until the compressor temperatures are stable
(after running loaded at maximum speed).
3. Adjust the Nozzle Fraction (the ratio of dried air and regeneration air):
Scrolling to the Test screen of the Elektronikon.
Select Modify - Enter - Tuning Throttle Valve - Enter.
Instruction book
260 2920 1815 04

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