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To adjust the normal working pressure, proceed as
follows:
1. Start and warm up the engine (see section
Starting/Stopping).
2. With the outlet valves (AOV) closed, loosen the
regulating valve’s lock nut and 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); adjust if necessary with
regulating valve (RV) (see table).
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).
Lock the regulating valve (RV) by fixing the lock
nut.
X Y Z1 – Z2
XAHS 146 Dd bar(e) 13.5 12 13.2 – 13.6
psi 196 174 191.5 – 197.5
XATS 156 Dd bar(e) 11.8 10.3 11.7 – 12.2
psi 171 149 167 – 173
XA(S) 186 Dd bar(e) 8.3 7 8.1 – 8.5
psi 120.5 101.5 117.5 – 123.5
XAVS 166 Dd bar(e) 15.5 14 15.3 – 15.7
psi 225 203 219 – 227
XAHS 186 Dd bar(e) 13.5 12 13.3 – 13.7
psi 196 174 191.5 – 197.5
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