Rotair D425T4F, Operating Maintenance Instructions & Part List

Page: 39 / 101

USER'S AND
MAINTENANCE
MANUAL
Date: 22/12/2016
Code MAN D425T4F ENG
Motor compressor D425T4F
Revision 00
Copyright © 2014, ROTAIR S.P.A. - All rights reserved This manual is intellectual property of ROTAIR S.P.A. Its
full or partial reproduction is forbidden under any form, on any support and by any means, without the written
authorization by ROTAIR S.P.A.
Page
39/57
11.3 Monitoring and control of air pressure minimum compressor
Figure 11.3-1 Adjusting minimum pressure pneumatic circuit
The minimum pneumatic pressure is calibrated during the testing phase of the machine.
If the minimum pressure pneumatic, indicated by the pressure gauge on the control panel, diverged over a ±
5% from the value specified in Paragraph 2 of this manual, proceed as follows:
1. Start the machine as described in section 10.2 Start.
2. Wait for the compressor reaches the maximum pressure and the engine stating the values of idle speed;
3. Gradually open the air valve (Letter A in Figure 10.2-1);
4. Open the bonnet with the compressor in motion;
5. Unscrew, with 10 mm wrench, nut (Letter A Figure 11.3 1) located in the vicinity of the exhaust cleaner.
Please Translate These points.
6. If you want to increase the maximum pressure must tighten the Allen screw (Figure 11.3 Letter B 1) with
Allen key 3 mm;
7. If you want to reduce the regime min loosen the Allen screw (Figure 11.3 Letter B 1) with Allen key 3 mm;
8. Once the adjustment screw, with a 10 mm wrench, nut (Letter A Figure 11.3 1) and turn off the taps;
9. Reopen slowly the air tap (Letter A Figure 10.2 1) and close it again repeating the process a few times to
allow the settling of the valve;
10. Close the bonnet.
WARNING:
Pressure vessel
1
2