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5.1 TEMPERATURE ADJUSTMENT BY MEANS OF THE ELECTRIC
PRESSURE CONTROLLER
.The pressure controller ( pressurestat) is located at the
back..
.Dismantle the cup rack, remove the cover of the
pressure controller to get to its adjustment
screw.
-TIGHTEN to LOWER the temperature
-LOOSEN to RAISE the temperature.
.The pressure-gauge (red scale) must
indicate a pressure of between 0.9
and 1 bar which corresponds to a
temperature of 120°C.
5.2 PRESSURE-RELEASE VALVE ADJUSTMENT
RUMBA Model
The HP valve is located in the lower part at the right rear
of the machine: it is necessary to dismantle the right side.
The valve must open at about 10 bar (green scale of the
pressure gauge).
- If the valve opens ABOVE 10 bar LOOSEN
- If the valve opens BELOW 10 bar TIGHTEN
Use a pin-wrench; after the adjustment,do not forget to
block the counter nut.
TWIN RUMBA and TRI RUMBA Model
The HP valve is located in the lower part at the left rear
of the machine: it is necessary to dismantle the left side.
The valve must open at about 13 bar (green scale of the
pressure gauge).
- If the valve opens ABOVE 13 bar LOOSEN
- If the valve opens BELOW 13 bar TIGHTEN
Use a pin-wrench; after the adjustment,do not forget to
block the counter nut.
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