Grindmaster CS1-110, CS3-220, CS1-220, CS2-220 Operator's Manual

CS Espresso Machine

CS1-110, CS1-220, CS2-220, CS3-220

Operator Manual

Grindmaster-Cecilware

4003 Collins Lane, Louisville, KY 40245 USA
Phone: [phone] Toll Free: 800.695.4500
Fax: [phone]
Web: gmcw.com Email: [e-mail]

Safety Information..................2

Specifications...........................3

Overview..................................4

Installation...............................6

Programming ..........................6

Operation ................................7

Cleaning...................................8

Adjustments ..........................10

Draining.................................11

Troubleshooting....................11

Parts Diagram........................12

Wiring Diagram.....................26

Thank you for purchasing this quality espresso machine. For your safety and the safety of others, read all warnings
and the operator manual before installing or using the product. Properly instruct all operators. Keep training
records. For future reference, record serial number here:

Table of Contents

©2018 Grindmaster-Cecilware

Printed in Taiwan

0318 Form # CW-345-02

Part # 390-00119

Grindmaster-Cecilware provides the
industry’s BEST warranty. Visit gmcw.com
for warranty terms and conditions.

Model CS2-220

Activate your warranty now at

http://gmcw.com/warranty-registration

GB Series Cecilware

®

2

For safe and proper operation the appliance must be placed in a stable, vertical position.

To reduce risk of serious burns or scalding, do not place hand or other body parts under dispenser while product
is brewing.

Always unplug unit from power supply before servicing.

Surfaces are hot and can cause burns. Use caution especially in the areas of the steam wand, hot water wand,
and brewing group.

Packaging material, including plastic bag and Styrofoam, can be dangerous and should be kept out of reach of
children.

To reduce risk of electrical shock, do not touch machine with wet hands or feet.

CAUTION

To reduce risk of electrical shock, do not remove or open cover. No user-serviceable parts inside. Repair should
be done by authorized service personnel only.

The appliance is not intended for outdoor use. Do not expose to rain or direct sunlight.

Do not clean with pressurized water or use in an area where pressurized water may be used.

Cleaning and maintenance shall be made only by properly trained persons with supervision.

This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities, or lack
of experience and knowledge, unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

Do not alter or deform the power cord or plug in any way! Altering or deforming the plug may cause electrical
shock, damage unit, and will void warranty.

To reduce risk of explosion or fire, do not use near combustibles.

WARNING

Safety Information

2 Grindmaster

®

CS Espresso Machine

Important Safety Information

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.

For your safety and the safety of others, read all warnings and the operator manual before installing or using
the product.

DANGER: This term warns the user of imminent hazard that will result in serious injury or death.
WARNING: This term refers to a potential hazard or unsafe practice, which could result in serious injury or death.
CAUTION: This term refers to a potential hazard or unsafe practice, which could result in minor or moderate

injury.
NOTICE: This term refers to information that needs special attention or must be fully understood.

Observe machine voltage configuration. Do not apply improper voltage to machine or damage to machine may
occur. For use on individual dedicated branch circuit only. Do not use extension cord.

Follow national and local electrical codes.

Do not use the machine and turn off the power during water outage.

This equipment must be installed in compliance with applicable Federal, State, and/or Local plumbing codes
having jurisdiction. This product requires an approved back flow prevention water device, such as a double
check valve, to be installed between the machine and the water supply.

Please follow maintenance and cleaning instructions specified in this manual to ensure the best operation
efficiency of machine.

NOTICE

CS Espresso Machine Grindmaster

®®

3

Rough-In Drawing

24.8”

(63 cm)

20.5”

(52 cm)

37.4”

(95.0 cm)

27.8”

(70.5 cm)

18.9”

(48 cm)

Specifications

Identification Label

Every machine has an identification label placed on the front of the machine as illustrated below. The label
includes information of model number, voltage, serial number, wattage, and its certificate. Do not remove this
label.

Figure A

Figure B

4 Grindmaster

®

CS Espresso Machine

Specifications (continued)

Specification Table

Overview

CS1

CS2

Figure C

Figure D

Model Number of Heads Boiler Capacity Electrical

CS1-110 1 Group 6 quarts / 6 L 110/120V / 1Ph / 50/60 Hz / 18 A / 2 kW
CS1-220 1 Group 6 quarts / 6 L 220/240V / 1Ph / 50/60 Hz / 10 A / 2000 W
CS2-220 2 Groups 13 quarts / 6 L 220/240V / 1Ph / 50/60 Hz / 20 A / 4700 W
CS3-220 3 Groups 19 quarts / 18 L 220/240V / 1Ph / 50/60 Hz / 27 A / 6500 W

Side Clearance required - 4" (10.2 cm)
Rear Clearance required - 4" (10.2 cm) for water and electrical connections

Water connection size - 3/4" GHT, 1/2" water line required
Water pressure between 20 PSI and 120 PSI (138 kPa - 827 kPa). Use regulator if higher pressure.

CS Espresso Machine Grindmaster

®®

5

Overview continued

CS3

Control Panel

Figure E

Figure F

Figure G

1 Espresso brewing unit control panel 11 Cup rack
4 Hot water wand 12 Sight glass (Boiler level check window)

5 Steam knob 14 Steam boilder pressure gauge
6 Steam wand 15 Pump pressure gauge
7 Main switch 17 Drain tray
8 Brewing group 18 Leg
9 Porta Filter 20 Hot water knob

Small single portion

Small double portion

Large single portion

Large double portion

Continuous Flow Button

6 Grindmaster

®

CS Espresso Machine

Unpacking Instructions

Carefully unpack the machine and inspect immediately
for shipping damage. The packaging may contain
unattached parts. Your machine was shipped in a carton
designed to give it maximum protection in normal
handling. It was thoroughly inspected before leaving
the factory. In case of damage, contact the shipper, not
Grindmaster-Cecilware.

NOTICE:

This equipment must be installed in
compliance with applicable Federal, State, and/or Local
plumbing codes having jurisdiction. This product requires
an approved back flow prevention water device, such as
a double check valve, to be installed between the
appliance and the water supply. If a check valve type
backflow preventer is used for water supply protection,
a screen of at least 100 mesh (100 strands per 1.0 in [25
mm]) shall be installed immediately upstream. The screen
shall be accessible and removable for cleaning or
replacement. (Required for NSF approved water hook­up.)
Incoming pressure should be greater than 20 psi and not
more than 90 psi.

• A filtering system is recommended to remove odors
and inhibit lime and scale build up in the unit.

• In areas with extremely hard water, a water softener
must be installed in order to prevent a malfunctioning
of the equipment and in order not to void the warranty.
Unsoftened water will decompose dissolvable minerals
and turn to limescale after boiling. The limescale will
reduce the machine’s thermal efficiency and machine’s
lifetime.

NOTICE: Do not use extension cords. Make sure that the

outlet the unit plugs into is grounded.

Check rating
marking on nameplate to be sure electric lines match
voltage, phase, and amperage requirements of
appliance.

Connections

1. When operating the machine for the first time or

replacing water softener and filtration system,
remove the water inlet tube and allow it to drain
for about one minute in order to get rid of
impurities from the water.

2. Connect a 1/2" diameter water line to the water

supply connection.

3. Open the water shut-off valve and check

connections for leaks. DO NOT over-tighten. Verify
water supply.

4. Connect 18mm diameter drain line to bottom,
center of machine.

5. Attach appropriate plug to cord. Power source
corresponds to the electrical rating shown on the
serial tag on unit. Plug the CS Espresso machine into
a dedicated power supply outlet.

6. Activate the Power Switch on front of unit (see
Figure H). The tank will fill in approximately 3-4
minutes.

7. Press continuous flow button on each control panel
(right button) to verify water flow.

8. After installing the machine, verify that during
water intake the steam boiler pressure gauge
indicator is within the green zone (1~1.4bar) and
the pump pressure gauge indicator, when using the
continuous flow button, is also within the green
zone (8~10bar). In case of need to adjust the
pressure, refer to Adjustments section.

Programming

Control Panel

There are two identical control panels on two-cup
models and three identical control panels on 3-cup
models. No default coffee output setting is provided.
Settings must be made manually during set-up. If you
are using a multi-cup machine, settings made on the
farthest right hand side control panel will serve as the
default for the others. Therefore, to set different values
for different cup compartments, begin set up from the
right and work your way to the left, to prevent the
previous setting from being overwritten.

WARNING: ELECTRIC SHOCK HAZARD!

Installation of this appliance should be performed by
qualified service personnel only. Improper installation
could result in electrocution.

CAUTION: BURN HAZARD

Steam wand, hot water wand, and brewing unit are
very hot. Use caution when operating unit to prevent
burns.

Figure H

CAUTION: BURN HAZARD

Unit is very hot. Use caution when turning on
programming switch to prevent burns.

Installation

CS Espresso Machine Grindmaster

®®

7

1. Turn on the programming switch. (see Figure I)

2. The LED of buttons 1 - 4 on the control panel will
be lit, and the fifth LED will flicker. This indicates
programming mode for setting up the amount of
continuous output. (See Figure J)

3. Place measuring cup under the brewing group.
Hold down the first button until reaching the

required amount of water. Do not otherwise touch
the panel. Meanwhile the first button’s light will be
off, the other three buttons still lit, and the fifth
button flickers (see Figure K). It means the first
button is programmed. Continue programming
other buttons. Turn programming switch to OFF
when completed. Each time the programming
switch is turned ON, it will reset the buttons.

NOTICE: To avoid overheating, electric wires should

be kept untangled and free of obstructions. Don’t block
air intake or outlet vents on the machine. Never cover
or otherwise prevent the free flow of air across the cup
warmer.

NOTICE: Do not use cleansers, bleach liquids, powders

or any other substance containing chlorine. These
products promote corrosion and will pit the stainless
steel. USE OF THESE PRODUCTS WILL VOID THE
WARRANTY.

1. Place an appropriate quantity of ground coffee in
the Porta Filter and tamp the ground coffee firmly.
Clean all residual coffee from the rim and sides of
the filter. This is to ensure a good seal and full
pressure when brewing coffee, and prolong the

lifetime of the gasket. Attach the Porta Filter to the
machine by rotating until it locks in place.

2. Place cup(s) or glass(es) under spout(s).

3. Either press desired portion button or press and
hold the continuous flow button until desired
portion is dispensed. To stop flow at any time, press
and release continuous flow button. (See Figure L)

4. Move cup(s) or glass(es) to side and remove Porta
Filter. Dump grinds. Carefully hold Porta Filter near
group head and rinse using the continuous flow
button water. Use extreme caution to avoid burns.
Then, fit empty Porta Filter to the brewing group
to store and keep warm.

Steam Wand:

This can be used by turning the knob counterclockwise,
which allows for a varied amount of steam or by pulling
out the handle which will dispense the maximum
amount of steam.

Programming (continued) Operation

CAUTION: BURN HAZARD

Steam wand, hot water wand, and brewing unit are
very hot. Use caution when operating unit to prevent
burns.

Figure I

Figure J

Figure K

Figure L

8 Grindmaster

®

CS Espresso Machine

Steam Wand (continued)

1. To drain condensate, ensure steam wand is pointed
toward the drain grid and pull handle out briefly to
dispense a small amount of steam.

2. Pour cold milk in a pitcher and place steam arm into
pitcher. Hold pitcher with one hand and turn on
steam, either by twisting to add a controlled
amount or pulling knob out to add steam at full
pressure.

3. Remove pitcher.

4. Wipe arm and nipple clean with soft cloth
moistened with sanitizer solution after each use.
After wiping, pull steam knob to release a steam
burst through the tube to remove any residual milk
remaining in the nozzle.

NOTICE: Remove the pitcher from the steam tube

after foaming milk. Failure to do so may draw liquid
from the pitcher into the steam tube, risking machine
component contamination.

Hot Water

1. Turn the hot water knob counterclockwise to obtain
hot water through hot water wand. Hot water
output will increase the further the hot water knob
is turned. Turn the knob clockwise to reduce/stop
hot water output.

2. You can also pull the knob straight out in order to
obtain hot water.

Cleaning

NOTICE: All sanitizing agents in the food zone must

comply with 21 CFR 178.1010. Sanitize all food
dispensing units periodically. All parts to be sanitized
must be cleaned first. Cleaning and sanitizing frequency
must follow state and local health department
regulations.

NOTICE: Wipe the accessories with a soft cloth or

specific detergent powder. Don’t use scrub sponge or
wire brushes.

After each brewing

1. Carefully hold Porta Filter near group head and
rinse Porta Filter using the continuous flow button
water. Water is hot - use extreme caution.

2. Wipe arm and nipple clean with soft cloth
moistened with sanitizer solution after each use.
After wiping, pull steam knob to release a steam
burst through the tube to remove any residual milk
remaining in the nozzle.

Daily
Exterior:

Wipe the machine exterior with soft, slight
dampened cloth daily before starting operations. If
necessary, a mild, non-corrosive cleaning agent may
be applied to the cloth.

NOTICE: Do not spray cleaning fluid directly on the

espresso machine to avoid corrosion or possible
electrical damage.

Back flushing:

1. Remove screw (E), shower screen (D), and plate (C)
from the group head (be careful, metal components
may be hot). (see Figure M)

2. Place the rubber disc in Porta Filter (see Figure N),
and apply about 2-3 grams of espresso machine
detergent/sanitizer on top of rubber disc. Attach
the Porta Filter to the group head and check for
tightness.

3. Press first and fifth buttons simultaneously to start
automatic back flushing function. The first and fifth
button will be off, and middle three buttons will be
lit. This auto back flushing system will complete 10
cleaning cycles. (see Figure O)

NOTE: If you want to discontinue the cleaning, press 3rd
button to stop.

Figure M

Operation (continued)

CAUTION: BURN HAZARD

Steam wand, hot water wand, and brewing unit are
very hot. Use caution when operating unit to prevent
burns.

Figure N

CS Espresso Machine Grindmaster

®®

9

Cleaning (continued)

4. After automatic back flushing cycle is complete,
rinse Porta Filter and rubber disc with water from
the continuous flow button until water in Porta
Filter appears clean.

5. Replace rubber disc on Porta Filter, then place Porta
Filter on the group head and press first and fifth
buttons simultaneously to start automatic back
flushing function to rinse. The first and fifth button
will be off, and middle three buttons will be lit. This
auto back flushing system will complete 10 cleaning
cycles.

NOTE: If you want to discontinue the cleaning, press 3rd
button to stop.

6. Screw (E), shower screen (D), and plate (C) should
be cleaned and sanitized with the Porta Filter, steam
wand nipple and hot water wand sprayer.

Cleaning and sanitizing portafilter:

Notice: To avoid damage, do not immerse espresso

Porta Filter handle in water. Do not put group gasket
(item B from Figure M) in water or any liquid
detergent.

1. Disassemble Porta Filter. (see Figure P)

2. Remove sprayer from hot water wand.

3. Remove nipple from steam arm.

4. Add loose group head parts [screw (E), shower
screen (D), and plate(C) from Figure M].

5. Use brush to clean and wash parts in detergent or
espresso urn cleaner/sanitiser. DO NOT immerse
Porta Filter handle. (see Figure Q)

6. Rinse parts.

7. Prepare a sanitizing solution in accordance with
local health department regulations. You may also
refer to the US Food and Drug Administration
regulation 21 CFR 178.1010 “Sanitizing Solutions”
and US Environmental Protection Agency 40 CFR

18.940 “Tolerance exemptions for active and inert
ingredients for use in antimicrobial formulations
(Food-contact surface sanitizing solutions)”.

8. Follow the instructions provided with the sanitizing
agent.

9. Let all sanitized parts drain and dry naturally. DO
NOT WIPE THEM DRY.

10. Reassemble parts.

Drain Tray and Discharge Trough:

1. Remove and wash the drain tray after stopping use.
(see Figure R)

2. Wipe and remove sediments in the discharge
trough with a wet cloth and wash with hot water
to clear the discharge tube.

3. If water does not discharge properly, place a

Figure O

Figure P

CAUTION: BURN HAZARD

Steam wand, hot water wand, and brewing unit are
very hot. Use caution when cleaning unit to prevent
burns.

Handle
Do not immerse

Liquid

Figure Q

Figure R

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.