29
--
8)
MACHINE SETTING AND TUNING --
-- 8.1)
CHECK ON MOTOR RPM MAXIMUM SPEED --
The calibration of the maximum rpm is set and sealed by the constructor. It
cannot be altered for any reason.
Any tampering with the sealing and consequent variation in the max. rpm, will result in the
immediate cancellation of the guarantee terms, both in relation to the motor and
compressor parts.
Any checks and setting of maximum and minimum rpm must be undertaken by
specialized personnel, complete with refractive speedometer devices and complete with
protective ear-muffs.
Proceed as follows:
1)
Start up the machine as described in paragraph 7.2 .
2)
Keep the cocks closed and check that the pressure indicated on the gauge on the
control panel corresponds to that indicated in paragraph 1.
Should they fail to correspond, proceed with pressure setting following the instructions
provided in paragraph 8.2 .
3)
Slowly open the cock until it the working pressure reading appears. See paragraph 1.
4)
Ensure that the motor has been completely accelerated, proceeding as follows, with the
aid of fig.11:
4.1)
ensure that the rod (P) is free
to undertake slight oscillation
around the pin (A). This rod
mobility demonstrates that the
piston (C) has totally returned
and that there is nothing to
impede motor acceleration. While
in the event that the piston (C)
appears to impede the lever (P)
and it is not found to be totally
free, try and increase the spring
traction force (M) according to the
following procedure:
FIG.11
4.2)
Stop the machine, release spring (M) of rod (A), loosen nut (D) and tighten the tie rod
(V) making it go round 4-5 times. Then re-hitch the spring to the rod and repeat the
operations of points 1-2-3-4.
D V M
C P A
Содержание MDVN 71 AP
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