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Adjustments and servicing procedures
ADJUSTMENT OF THE CONTINUOUS REGULATING SYSTEM
The working pressure is determined by the tension of
the spring in the regulating valve (RV). This tension
can be increased to raise the pressure and decreased to
lower it by turning the adjusting wheel clockwise and
anti-clockwise respectively.
To adjust the normal working pressure, proceed as
follows:
1. Start and warm up the engine (see section
).
2. With the outlet valves (AOV) closed, pull out the
knob, adjust the regulating valve (RV) until a
pressure of X bar(e) is reached (see table).
3. Check the minimum speed of the engine. Adjust
minimum speed stop screw if necessary.
4. Open an outlet valve (AOV) just enough to let the
engine (E) run at maximum speed. The working
pressure must be Y bar(e) (see table); adjust if
necessary with regulating valve (RV).
5. Check the engine maximum speed. Adjust the
maximum speed by means of adjusting eccentric
nut on top of speed regulator (SR).
6. Close the outlet valves (AOV), check that the
pressure is between Z1 and Z2 bar(e) (see table).
7. Lock the regulating valve (RV) by pushing the
knob down.
(AOV)
(RV)
(SR)
(E)
X
Y
Z1 – Z2
bar(e)
8.5
7
8.3 – 8.7
psi
124
102
122 – 127
Summary of Contents for XAS 185 DD7
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