Grindmaster Espressimo 1750 - Machine Adjustments and Calibration; Adjusting Pressure Control Settings; Adjusting Pump Pressure Levels

Page 11 Espressimo 2450 & 1750 Espresso Cappuccino Machines
Care and Cleaning
Monthly Cleaning
Clean Group Head, Screen and Group
Head Gasket
1. Remove screw holding screen in place.
2. Remove and clean screen, shower, and group
head gasket.
3. Wipe and clean group head.
4. Reinstall gasket, shower, and screen, and then
tighten screen securely.
(Note: There are numbers molded onto one side of the
gasket. Insert gasket with numbers facing up.)
Make sure gasket is positioned in place.
Yearly Cleaning
Inspection, testing, and repair of this espresso
machine, including the following procedures should
only be performed by a qualified service technician.
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Replace head gaskets annually.
Clean group strainer, replacing if necessary.
Flush heat exchanger by running water through the hot water
spout and check for proper flow.
Check steam pressure to be approximately 17-20 P.S.l.
Check group head pressure to be approximately 125 P.S.I.
Empty the Boiler
The following is proper procedure for emptying and
replacing water in the boiler.
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Clean Pump Strainer
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Plug in. Make sure boiler is filled ("AUTOFILL" light will be
OFF.) Turn machine “ON.”
Check for proper brew levels.
Turn “OFF” and unplug machine.
Turn pressure down to 0 P.S.I. by directing the steam wand
over the drain pan and pulling down the steam handle.
Take out main heater by removing four bolts and disconnect
the two wire terminals.
Check for buildup on heater. De-lime or replace heater if
necessary.
Siphon water out of the boiler and check for clarity. Refill
with water.
Cover the heater terminal wires with electrical tape.
With main power switch of machine “OFF,” plug in machine.
Boiler will begin to fill. Check for fill time of 3 to 5 minutes.
Look for proper water level to be about 3 inches from the
top of boiler.
Repeat as necessary.
If all is correct, unplug and reinstall heater using a new
heater gasket.
Turn “OFF” and unplug machine.
Turn “OFF” water supply.
Remove strainer bolt.
Remove strainer and clean.
Reinstall strainer.
Turn on water.