Adjustments
Inspection, testing, and repair of this espresso machine, including the following procedures should only be performed by a qualified service technician.
How to Adjust the Pressure Control
1.Turn “OFF” and unplug machine.
2.Remove cover panel. Locate pressure control at the top front right side of the machine.
Pressure Control
Front of machine
3.Lift off plastic cover from pressure control.
4.Locate the open hole with the screw slot in the top of the pressure control.
5.With a flat screwdriver, carefully adjust the pressure control by inserting screwdriver in slot and turning clockwise to lower pressure or counterclockwise to raise pressure. One turn equals approximately 1 PSI.
6.Reinstall and check machine for proper pressure as follows:
a.Plug machine in. The yellow heater light will turn on.
b.Watch for the yellow heater light to turn off. This is the high pressure setting (high pressure setting should be set at approximately 20 PSI).
c.Open the steam wand. Watch for the yellow heater light to turn on again. This is the low pressure set- ting. The low pressure setting will be within a 3 PSI Range of the high pressure setting.
7.Repeat steps
How to Adjust the Pump Pressure
1.Turn “OFF” and unplug machine and shut off water supply.
2.Locate small closed nut bolt on pump.
Front of machine
3.Loosen and remove bolt. Underneath it you will find the adjustment screw.
Front of machine
4.To adjust, turn the screw clockwise to raise pressure or counterclockwise to lower pressure. One half turn equals approximately 10 PSI.
5.Reinstall bolt.
6.Turn on water.
7.Open hot water spout to flush out air in line.
8.Plug machine in and check for proper group head pressure, using a pressure gauge on the filter holder. Pressure should be approximately 125 PSI.
9.If the pressure rate is fluctuating erratically, check for erratic water pressure coming to machine. Install a water pressure regulator if needed.
Espressimo 2450 & 1750 Espresso Cappuccino Machines | Page 12 |