10
Grindmaster
®
CS Espresso Machine
Cleaning (continued)
teaspoon of detergent into the discharge trough
and flush with hot water to dissolve residual oils in
the tube.
4. Reassemble after the water tray has dried.
Adjustments
NOTICE:
Please contact your authorized service
representative to undertake these procedures.
The rest of this manual contains information to aid the
service technician who is maintaining this equipment.
This section has information on performing common
service tasks.
Pump Pressure Adjustment
The pump pressure has been factory adjusted to 9 bar
(the recommended pressure). After machine starts up
and water refills, press continuous flow button and read
pressure on pressure gauge if the indicator is on green
zone (8-10 bar) as shown in
Figure S
.
If the pressure is not in the green zone, adjust pressure
as shown below:
1. Remove left side panel
2. Attach Porta Filter into the brewing group with
filled ground coffee.
3. Press continuous flow button. Turn screw clockwise
as shown in
Figure T
to increase pressure; turn
counterclockwise to reduce pressure.
Steam Boiler Pressure Calibration
Steam boiler pressure is controlled by pressure switch.
The pressure inside the boiler continues to rise as the
water is heated by the heating elements. Reducing
pressure will reduce temperature, while increasing
pressure will increase temperature. The steam boiler has
been factory adjusted to 1.2bar, (the recommended
pressure). Please check if your pressure on the pressure
switch is 1.2bar or on the green zone (1-1.4bar) (see
Figure U
). if so, you don’t need to adjust the pressure.
In case there is a need to calibrate the pressure, please
follow below procedure for calibration:
NOTE: Please turn off the machine before undertaking
this operation.
1. Turn off machine.
2. Remove top cover of machine, and locate the
pressure switch on the upper right size.
3. Remove the yellow case from the pressure switch.
Use screw to adjust the pressure as shown in
Figure
V
. Turn screw clockwise to decrease pressure, or
counterclockwise to increase pressure. A complete
screw turn results in 0.1 bar variation.
Figure S
Figure T
Figure U
Figure V
WARNING: SHOCK HAZARD
Disconnect power before adjusting steam boiler
pressure.
CAUTION: BURN HAZARD
Steam wand, hot water wand, and brewing unit are
very hot. Use caution when adjusting unit to prevent
burns.
