32
WARNING:
Should the gauge have a jerky discontinuous function, it must be
replaced. Therefore before undertaking any calibration of the maximum and
minimum pressure valves, make sure that the gauge itself is efficient and reliable.
-- 8.3) MINIMUM PRESSURE CHECKING AND SETTING
(Fig. 14)
--
The purpose of this valve is to ensure that during operation the pressure in the
oil separator tank does not drop under the minimum value, in order to ensure the
necessary oil circulation.
CHECKING AND SETTING:
1)
Start up the machine as described in paragraph (7.2).
2)
With motor warm, at right temperature, gradually proceed to fully open the air cock; the
motor will reach maximum rpm and a pressure of between 4.5 - 5 bar must appear on the
gauge.
Should a different pressure appear
than that indicated above, proceed
with setting as follows (fig. 14):
3
Release the lock-nut (1) .
4
Tighten the regulation screw (2)
to increase the pressure to the
desired value.
5
Loosen the regulation screw (2)
to reduce the pressure to the
desired value
6
Tighten the lock nut (1) and
close the cocks.
7
Slowly re-open the air cock and
then close it again repeating the
operations several times in order
to permit the valve to settle into
place.
Fig. 14
1
2
Summary of Contents for MDVN 71 AP
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