Espressimo 2450
0307 Form # ES-351-08
Part #60236
Espressimo
TM
Espresso Cappuccino Machines
Operation & Installation Manual
For
Models 2450 & 1750
*Also includes information & instructions for Q & E models.
Prior authorization must be obtained from
Grindmaster Corporation for all
warranty claims.
© Grindmaster Corporation™, 1994
PRINTED IN USA
Grindmaster Corporation™
4003 Collins Lane
Louisville, Kentucky 40245 USA
(502) 425-4776
(800) 695-4500 (USA and Canada only)
(800) 568-5715 (technical service only)
FAX: (502) 425-4664
www.grindmaster.com
TABLE OF CONTENTS
Warning Labels.......................................................2
Initial Preparation....................................................3
Understanding basic concepts about
brewing espresso......................................4
External machine parts 2450 & 1750......................5
Accessories............................................................6
Installation..............................................................6
Programming Instructions.......................................7
How to Brew Espresso............................................8
How to Froth Milk....................................................9
How to Steam Milk..................................................9
Care and Cleaning................................................10
Adjustments..........................................................12
Coffee Taste and Appearance Guide....................13
Troubleshooting Guide .........................................14
Plumbing Guide................................................17
Wiring Diagrams............................................18 - 19
Exploded Views 2450.....................................20 - 22
Exploded Views 1750......................................23 - 25
Espressimo 2450 & 1750 Espresso Cappuccino Machines Page 2
Espresso Cup Cafe Latte MugCappuccino in glass mug
Warning Labels
The following warning labels were on your espresso machine when it shipped from the factory. The labels should
remain on the machine in good, readable condition at all times. If one of your labels is missing or damaged, order
a replacement label immediately.
Overview: Espresso and espresso-based drinks
Espresso - A coffee beverage made by quickly extracting the heart of the coffee flavor under pressure in single
servings. A single portion of espresso, brewed for 18-23 seconds, produces about 1
1
/2 to 2 ounces and is usually
served in a small 2
1
/2 ounce, preheated espresso cup.
Crema -The fine, foamy, golden brown extraction that is on the surface of the cup of espresso. Crema is a sign
that all the elements were right in producing the perfect cup of espresso.
Cappuccino- Usually
1
/3 espresso to
2
/3 frothed milk, in a preheated cappuccino mug. Some prefer to pour the
espresso into the frothed milk in a cappuccino mug, while others pour or spoon the frothed milk over espresso.
Cafe Latte (Italian) or Cafe au Lait (French) or Cafe con Leche (Spanish) - A single serving of espresso with
steamed milk, roughly
1
/4 espresso to
3
/4 milk.
Frothed milk - The thick white foam created by placing the steam wand into a pitcher of cold milk.
Steamed milk - Milk that remains in liquid form, heated by the steam wand.
There are several other espresso based drinks, including the addition of flavorings and toppings. There are
several recipe booklets available on the market today.
CAUTION: HOT SURFACES
DISCONNECT FROM POWER AND ALLOW TO COOL
THOROUGHLY BEFORE SERVICING OR CLEANING
#60188
#60187
CAUTION: HOT SURFACES
ALL DISPENSER HEADS
CAN BE HOT
- CAN CAUSE BURNS -
Initial Preparation
Warning: To prevent damage to machine, boiler must be filled with water before turning main power switch on.
1.
2.
3.
4.
5.
6.
*Required to validate warranty. (See warranty for details).
Before operating the machine, please read the operation and instruction manual.
Needed for installation:
•
•
•
•
•
Remove machine from carton and position machine in operating location.
At this point, please refer to Installation Instructions on Page 6.
If there is a problem, consult the Troubleshooting Guide in this manual.
If you cannot correct a problem, call Grindmaster Corporation’s Hotline for help at 800-695-4500 or
+1-502-425-4776, Monday through Friday, 8 A.M. until 8 P.M., EST.
Access to cold water line with minimum of 30 P.S.I. pressure, drain, and heavy-duty grounded receptacle with its
own breaker. Models 2450 & 1750 use 115V, 20 AMP receptacle. Q models use 230V (3 wire plus ground), 20
AMP receptacle. E models use 230V, 15 AMP receptacles with proper plug installed by customer.
1
/
4
” copper tubing
(4)
1
/
4
” female flare fittings
In-line water filter system*
3
/
4
” ID flexible drain hose
IMPORTANT
Failure to use in-line water
filter voids warranty!
Page 3 Espressimo 2450 & 1750 Espresso Cappuccino Machines
Espressimo 2450 & 1750 Espresso Cappuccino Machines Page 4
Understanding Basic Concepts about Brewing Espresso
How espresso is made differently from
regular brewed coffee.
Traditional coffee is brewed by hot water being poured
through loose coffee grounds. With espresso, water is
heated in an enclosed chamber, then the water is forced
quickly under pressure through fine, compacted coffee
grounds.
Espresso can be made in either single or double servings.
Correctly prepared espresso has a strong, potent coffee
flavor and crema on the surface of the espresso.
Finely ground coffee grounds
are tamped into the filter holder.
(See instructions on page 6.)
Double Filter Holder
Single Filter Holder
Double Filter Holder
with two cups
Steam
Page 5 Espressimo 2450 & 1750 Espresso Cappuccino Machines
1750 & 2450 External Machine Parts
1.
2.
3.
4.
5.
6.
7.
8.
9.
Left Automatic Touch Pad - When button is
pressed, hot water is dispensed through the filter
holder and into the cup. (See programming instruc-
tions on page #22.) (Not included on Model 1750.)
Hot Water Handle - Pull down to dispense hot
water through hot water spout.
Hot Water Spout - Offers fresh, hot water by the
cup for Cafe Americana, hot tea and cocoa.
Filter Holder - Handle and filter holder assembly for
a single espresso serving. Filter holder is locked
into place under the group head (double filter holder
is also available).
Back Splash Panel
Drain Tray/Basin - Drain tray can be lifted for
cleaning drain basin below tray.
Leg - The machine rests on four legs.
Left Group Head - Where hot water is pressurized
before going through filter holder. (One group head
on Model 1750.)
Cover Panel - Slotted stainless steel lid, lifts off top
of machine. Slots release heat and are often used
to warm cups before use.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Right Automatic Touch Pad - When pressed, hot water
is dispensed through the filter holder and into the cup.
Auto Fill Light - A red light. When lit, indicates that
machine needs water in boiler. The light will flicker on
and off as the boiler is filling with water.
Gauge - Indicates in P.S.I. (lbs. per square inch) steam
pressure in boiler.
Heater Light - An amber light. When lit, indicates heat-
ing element is heating water in boiler.
Steam Handle - Pull down handle to release steam
from steam wand.
Main Power Switch - Turns on power to machine.
(Except “Auto Fill”, which remains on at all times.)
Steam Wand - Upon pulling steam handle, steam is
released from the steam wand for steaming or
frothing milk.
Right Group Head - Where hot water is pressurized
before going through filter holder. (One group head on
Model 1700.)
Filter Holder - Handle and filter holder assembly for a
single espresso serving. Filter holder is locked into
place under the group head (double filter holders is also
available.)
Accessories
The following accessories have been packed and shipped with
the Espresso maker.
Installation
Warning: To prevent damage to machine, boiler must be filled
with water before turning main power switch "ON".
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
On models 2450 & 1750, screw on legs.
Connect drain hose to drain fitting located at bottom, on
front of machine.
Place flexible drain hose into a permanent drain. Make sure
there are no obstructions or kinks.
Install water filter supplied with unit. Failure to use in-line
water filter voids warranty.
Turn water “ON” and allow at least one gallon of water to
flow through the tubing on the outlet side of the filter. This
will flush out any foreign matter that may be present. When
water runs clear shut water “OFF.”
Connect copper tubing from filter to the flare inlet valve
located underneath the machine.
Turn main water supply valve “ON.” Check for leaks at
fittings and connection points.
Fully open machine valve on' " flare inlet by turning counter-
clockwise.
Flush heat exchanger by pulling the hot water handle down
and running water through the hot water spout. (Dispense
approximately
1
/2-1 gallon of water.)
Check to make sure main switch is “OFF” then plug
machine into a grounded receptacle. Models 2450 & 1750
use 115V, 20 AMP receptacle. Q Models use 230V (3 wire
plus ground) 20 AMP receptacle. E models use 230V, 15
AMP receptacles with proper plug installed.
Although the main switch is “OFF” when machine is
plugged in, the red light labeled "AUTOFILL" will light up.
Water will be heard filling the boiler for three to five minutes.
When the "AUTOFILL" light is no longer on, the boiler has
filled.
Flip the main power switch to the "ON" position. (Do not turn
on until machine has completely filled.)
14.
15.
16.
17.
Important Note about
Vacuum Breaker
The vacuum breaker, located
under the cup warming area
on the top of the machine,
will vent air and steam to
the cup warning area
upon start-up.
If the vacuum breaker
does not close, then
excessive steam will
vent to the cup
warming area. To
correct this,
remove the
cover from the
machine and tap
the top of the
vacuum breaker.
Flush the group heads by turning both brew switches on.
Let water run for approximately one minute.
When the main power switch is placed in the "ON" position,
the amber indicator light -the heater light-will also go on.
The amber light indicates that the heating element is on,
heating water in the boiler to produce steam pressure. The
amber light will go out when steam pressure increases to
approximately 20 P.S.I.
Steam pressure decreases as steam is released to froth or
steam milk, warm cups, etc. When steam pressure
decreases to approximately 17 P.S.I., the heater light again
becomes lit, indicating that the heating element is again
heating water to increase steam pressure to approximately
20 P.S.I.
It will take 30-40 minutes for water in machine to fully heat
upon initial installation, depending on
temperature of water source.
Cord retainers have been provided to enable power cord
and water line to be lifted off of the counter. To install, push
cord retainers into mounting holes on bottom panel as
shown. Snap cord and water line into cord retainer.
Cord
Retainer
Power Cord
(Supplied with unit)
Water Lines
(Supplied by installer)
Drain Hose
(Supplied
with unit)
Espressimo 2450 & 1750 Espresso Cappuccino Machines Page 6
Programming the Portion Buttons
for 2450 Espressimo Machines
Follow the above installation instructions. When machine is up to operating temperature, indicated by the gauge being between 10
and 20 p.s.i., your machine can be programmed to release the same amount of coffee during each use.
1. Place a filter in filter holder and add approximately 7 grams of espresso grind coffee.
Insert filter holder into group head and place a cup or container to
be used for measuring under spout.
2. Press and hold single portion button. After
approximately 5 seconds, both the “program mode” and
position size red lights will flash on and off and the
machine will begin to brew espresso.
3. Continue to hold the single portion button until the
desired volume is dispensed. Release of the single
portion button will save the portion dispensed to
machine memory and brewing will be terminated.
4. Check portion size by reloading the single filter holder
for a single brew.
5. Press and release the single portion button to the brew
cycle. Once the button is pressed and released, a
pre-infusion cycle will occur for approximately 2 seconds
(this will soak the bed of coffee before the pump comes
on), after which the pump will be turned on and
brewing will begin.
6. The machine will dispense the pre-programmed amount
of Espresso and automatically shut itself off.
7. To program the double portion button, repeat the above steps using the double filter holder and using approximately 14grams
of espresso grind coffee.
8. The manual on/off (*) may be used for custom volume brewing espresso to the desired volume and also for daily backflush
cleaning of the group heads where toggling of the machine on and off is required.
NOTE: Brew cycle is started only when button is released. Failure to release the button within 5 seconds will activate the
“Programming Mode.” The brew cycle may be stopped at any time after the pre-infusion cycle by pressing the brew button again.
As a safeguard, the maximum brew time allowed for all brew cycles is 2 minutes, after which, the machine will terminate the brew
cycle.
Program Mode
Indicator Light
Automatic Touchpad Function Layout
Brew Indicator
Lights
Single Portion
Brew Button
Double Portion
Brew Button
On/Off Manual
Brew Button
Page 7 Espressimo 2450 & 1750 Espresso Cappuccino Machines
Espressimo 2450 & 1750 Espresso Cappuccino Machines Page 8
How to Brew Espresso
Before You Start:
Use fresh coffee beans. Select a roast made especially for espresso. The grind of the coffee is very important
in making a good cup of espresso. Proper espresso grind is a texture like fine grains of sand. A grind like a
powder is too fine.
Your espresso machine is "pod compatible." A "pod" is a small self-contained paper filter which contains one
serving of pre-ground, pre-measured espresso roast coffee. Check with your coffee vendor for availability.
This step-by-step example is for brewing a single cup of espresso.
1. Insert single filter into single
filter holder
2. Add approximately 7 grams
of coffee to the filter holder.
(Grinder/doser and
measuring spoons are
available from Grindmaster.)
3. Lightly tamp and level the
grounds with even pressure.
(Do not “pack” coffee into
the filter.)
4. Wipe or brush away any
excess grounds on the rim
of the filter holder.
5. Attach filter holder to the
group head by lining up tabs
on filter holder with slots in
group head. Push the filter
holder firmly into place and
lock in by rotating left to
right.
6. Place a preheated espresso
cup under the filter holder.
Turn "on" the
appropriate brew switch for
18 to 23 seconds, then turn
off the brew switch.
Espresso will flow out at a
slow, steady rate. Each 1
1
/2
to 2 oz. cup of properly
made espresso will have a
fine layer of crema on the
surface of the espresso.
7.
WARNING: Never open or
remove filter holder when
pressurized in group. head or
when brew switch is "ON”.
Wait a few seconds for
pressure to release. Then
unlock the filter holder by
rotating right to left, then
down and out. Dump the
used grounds out of the
filter holder.
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