USER'S AND
MAINTENANCE
MANUAL
01/31/2020
Air Compressor : D185T4F-DB
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.
11.3 Monitoring and adjusting the minimum air pressure
Figure 11.3-1 Adjusting minimum pressure of the air compressor
The minimum air pressure is calibrated during the testing phase of the machine.
If the air pressure indicated by the pressure gauge on the control panel varies over a ± 5% from the value
specified in Section 2.2 of this manual, proceed as follows:
1) Start the machine as described in Section 10.2 "Starting"
2) Wait for the compressor to reach maximum pressure when the engine is at idle speed
3) Gradually open the air valve (Figure 10.2-1)
4) Open the hood with the engine running
5) Loosen the 10mm lock nut on the minimum pressure valve (Letter A Figure 11.3-1)
6) To increase the maximum pressure, tighten the 3mm Allen screw (Figure 11.3 Letter B)
7) To reduce the minimum pressure, loosen the 3mm Allen screw (Figure 11.3 Letter B)
8) Tighten the 10mm lock nut (Letter A Figure 11.3-1) and close the air valves (Figure 10.2-1)
9) Slowly open the air valve (Figure 10.2-1) and close it again, repeating the process a few times to allow
the settling of the minimum pressure air valve minimum 5 bar/73psi.
10) Close the hood
WARNING: Pressure tank
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