Fetco CBS-51H10 Installation Manual

User’s Guide

www.fetco.com

CBS-5000 Series Coffee Brewers

Models:

f CBS-51H10
f CBS-51H15
f CBS-52H15
f CBS-52H20

Table of Contents

Contact Information ..................................................2

Product Description/Features ...................................2

Technical Data..........................................................2

Brewing Specifications..........................................2

Weights and Capacities ........................................ 2

Electrical Configuration and Brewing Efficiency ...2

Dimensions & Utility Connections.............................4

Installation................................................................. 5

Operating Procedures ..............................................7

FETCO® and LUXUS® are trademarks or trade names of Food Equipment Technologies Company.

© 2006 Food Equipment Technologies Company Part # P004 January 16, 2006

Service......................................................................8

Warranty................................................................8

Principles of Operation.......................................... 8

Adjustments ........................................................11

Brewer Parts ...........................................................14

CBS-51H10 Parts List.........................................14

CBS-51H15, 52H15, & 52H20 Parts List ............16

Parts Drawing: CBS 51H15 & 52H15 ................. 18

Troubleshooting......................................................19

FETCO

®

Food Equipment Technologies Company
600 Rose Road
Lake Zurich • IL • 60047-0429 • USA

Internet: www.fetco.com

Contact Information

Phone: [phone] (US & Canada)

[phone]

Fax: [phone]

Email: [e-mail]

[e-mail]

CBS-51H10 - Single 1.0 Gallon Coffee Brewer CBS-52H15 - Twin 1.5 Gallon Coffee Brewer
CBS-51H15 - Single 1.5 Gallon Coffee Brewer CBS-52H20 - Twin 2.0 Gallon Coffee Brewer

• Thermal, portable, beverage dispensers

• Stainless steel, gourmet size brew baskets • Half batch brewing capability*

• Brew basket double safety locks • Iced tea brewing capability*

• Open type, leak free dispense system • Color stainless steel finish

• Fully automatic, with electronic temperature control • Custom and export voltage

• Mercury type power contactor • 3.0 liter airpots, with stands,

• Two level tank drain system

• Total serviceability from the front

Note: Throughout this manual, all references to CBS-51H and CBS-52H brewers apply to all models, unless otherwise indicated.

Optional Features:

* Can be added at any time.

Technical Data

Brewing Specifications

Brew Volume: CBS-51H10 CBS-51H15 & 52H15 CBS-52H20 Temperature:

Product Description/Features

Full Batch 1 gal. (3.8 lit.) 1 ½ gal. (5.7 lit.) 2 gal. (7.6 lit.)
Half Batch ½ gal. (1.9 lit.) ¾ gal. (2.8 lit.) 1 gal. (3.8 lit.)

Brew Time: CBS-51H10 CBS-51H15 & 52H15 CBS-52H20 Bypass Range: 0 to 33%
Full Batch 2 ¾ - 3 min. 4 - 4 ½ min. 5 ½ - 6 min.
Half Batch 1 ½ min. 2 - 2 ¼ min. 2 ¾ - 3 min.

(Allow an extra 2-4 minutes for coffee to finish dripping)

205°F inside water tank (at sea level)

195°F ± 5° at sprayhead

(factory set at 0% unless specified)

(Not available on CBS-51H10)

Coffee Filter Size: CBS-51H10 CBS-51H15, 52H15, & 52H20 Water Requirements: 20-75 psig
13” X 5” 15” X 5 ½ ” – standard
13” X 5” - optional half batch

½ gpm (CBS-51H)
1 ¼ gpm (CBS-52H)

Weights and Capacities

Brewer
Model

CBS-51H10 42 lbs. 3.0 gal. 25 lbs. 67 lbs. 7.0 lbs. 15.4 lbs. 82.4 lbs.
CBS-51H15 55 lbs. 3.7 gal. 31 lbs. 86 lbs. 8.5 lbs. 21 lbs. 107 lbs.
CBS-52H15 82 lbs. 7.6 gal. 63 lbs. 145 lbs. 8.5 lbs. 21 lbs. 187 lbs.
CBS-52H20 87 lbs. 7.6 gal. 63 lbs. 150 lbs. 10 lbs. 26.6 lbs. 203.2 lbs.

Weight

(empty)

Water tank

Capacity & Weight.

Weight

(filled)

Dispenser

Weight, ea.

Dispenser
Filled, ea..

Total Weight Brewer &

Dispensers, Filled

Electrical Configuration and Brewing Efficiency

CBS-51H10 1.0 gallon per batch

Electrical Heater Voltage Maximum Batches per Hour (max 13)
Config. Code Configuration Connection Phase Wires KW Amp draw Cold Water Hot Water

C50016 1 X 1800 watt 120 1 ph. 2 + ground 1.9 15.5 4.5 10.3
C50026 2 X 1800 watt 120/208 1 ph. 3 + ground 3.1 13.5 6.7 13.0

120/220 1 ph. 3 + ground 3.4 14.7 7.8 13.0
120/240 1 ph. 3 + ground 4.1 15.5 8.9 13.0

2

CBS-51H15 1.5 gallons per batch

Electrical Heater Voltage Maximum Batches per Hour (max 11)
Config. Code Configuration Connection Phase Wires KW Amp draw Cold Water Hot Water

C51016 1 X 1800 watt 120 1 ph. 2 + ground 1.9 15.5 3.0 6.8
C51026 1 X 3000 watt 120/208 1 ph. 3 + ground 2.3 11.3 3.7 8.6

120/220 1 ph. 3 + ground 2.6 12.0 4.3 10.0

120/240 1 ph. 3 + ground 3.1 13.0 5.0 11.0

C51036 1 X 4000 watt 120/208 1 ph. 3 + ground 3.1 14.9 5.0 11.0

120/220 1 ph. 3 + ground 3.4 15.8 5.8 11.0

120/240 1 ph. 3 + ground 4.1 17.2 6.6 11.0

C51046 2 X 3000 watt 120/208 1 ph. 3 + ground 4.6 22.1 7.4 11.0

120/220 1 ph. 3 + ground 5.2 23.4 8.6 11.0

120/240 1 ph. 3 + ground 6.1 25.5 9.9 11.0

C51056 2 X 4000 watt 120/208* 1 ph. 3 + ground 6.1 29.3 9.9 11.0

*(-5) version is rated for 208 volts maximum

CBS-52H15 1.5 gallons per batch

Electrical Heater Voltage Maximum Batches per Hour (max 22)
Config. Code Configuration Connection Phase Wires KW Amp draw Cold Water Hot Water

C52016 2 X 3000 watt 120/208 1 ph. 3 + ground 4.6 22.4 7.4 17.2

120/220 1 ph. 3 + ground 5.2 23.7 8.6 19.9

120/240 1 ph. 3 + ground 6.1 25.8 9.9 22.0

C52026 2 X 4000 watt 120/208 1 ph. 3 + ground 6.1 29.6 9.9 22.0

120/220 1 ph. 3 + ground 6.8 31.3 11.5 22.0

120/240 1 ph. 3 + ground 8.1 34.1 13.2 22.0

C52036 3 X 3000 watt 120/208 3 ph. 4 + ground 6.9 19.5 11.2 22.0

120/220 3 ph. 4 + ground 7.7 20.6 12.9 22.0

120/240 3 ph. 4 + ground 9.1 22.4 14.9 22.0

C52046 3 X 4000 watt 120/208 3 ph. 4 + ground 9.1 25.8 14.9 22.0

120/220 3 ph. 4 + ground 10.3 27.3 17.3 22.0

C52186
C52986

3 X 4000 watt 480 3 ph. 3 + ground 12.1 22.5 19.8 22.0

maximum steam demand: 40 lbs./hour steam pressure: 10 – 15 PSI

120/240 3 ph. 4 + ground 12.1 29.7 19.8 22.0

STEAM 120 1 ph. 2 + ground n/a 0.8 22.0 22.0

CBS-52H20 2.0 gallons per batch

Electrical Heater Voltage Maximum Batches per Hour (max 18)
Config. Code Configuration Connection Phase Wires KW Amp draw Cold Water Hot Water

C53016 2 X 3000 watt 120/208 1 ph. 3 + ground 4.6 22.4 5.6 12.9

120/220 1 ph. 3 + ground 5.2 23.7 6.5 14.9
120/240 1 ph. 3 + ground 6.1 25.8 7.4 17.2

C53026 2 X 4000 watt 120/208 1 ph. 3 + ground 6.1 29.6 7.4 17.2

120/220 1 ph. 3 + ground 6.8 31.3 8.6 18.0
120/240 1 ph. 3 + ground 8.1 34.1 9.9 18.0

C53036 3 X 3000 watt 120/208 3 ph. 4 + ground 6.9 19.5 8.4 18.0

120/220 3 ph. 4 + ground 7.7 20.6 9.7 18.0
120/240 3 ph. 4 + ground 9.1 22.4 11.2 18.0

C53046 3 X 4000 watt 120/208 3 ph. 4 + ground 9.1 25.8 11.2 18.0

C53186
C53986

maximum steam demand: 40 lbs./hour steam pressure: 10 – 15 PSI

120/220 3 ph. 4 + ground 10.3 27.3 12.9 18.0
120/240 3 ph. 4 + ground 12.1 29.7 14.9 18.0

3 X 4000 watt 480 3 ph. 3 + ground 12.1 22.5 19.8 22.0

STEAM 120 1 ph. 2 + ground n/a 0.8 22.0 22.0

3

CBS-51H10

Dimensions & Utility Connections

CBS-52H15

CBS-51H15

CBS-52H20

4

Installation

(For Qualified Service Technicians Only)

Keys To A Successful Installation

If not installed correctly by qualified personnel, the brewer may not operate properly and damage may result.
Damages resulting from improper installation are not covered by the warranty.
Here are the key points to consider before installation:

Electrical:

 All FETCO brewers require NEUTRAL. Ground is not an acceptable substitute. Installation without neutral

may cause damage to the electronic components.

 The power connection to L2 on the terminal block must be at least 105 volts. Less than 105 volts will

cause erratic behavior from the brewer.

 The power switch has a built-in circuit breaker. To reset it, turn to the “off” position, and then back to the

“on” position.

 The electrical drawing for the brewer is located on the inside of the lower cover.

Plumbing:

 This equipment is to be installed to comply with the applicable federal, state, or local plumbing codes.
 The water line must be flushed thoroughly prior to connecting it to the brewer to prevent debris from

contaminating the machine.

 Verify that the water line will provide at least ½ gallons per minute for the CBS-51H, and 1 ¼ gallons per

minute for the CBS-52H before connecting it to the brewer.

General:

 Utilize only qualified beverage equipment service technicians for installation. A Service Company Directory

may be found on our web site, http://www.fetco.com.

Installation Instructions

Brewer Setup

1. Review the Dimensions for the unit you are installing. Verify that the brewer will fit in the space intended
for it, and that the counter or table will support the total weight of the brewer and dispensers when filled.

2. The brewer’s legs are shipped inside the brew baskets. Remove the brew basket(s) and the coffee
dispenser(s). Place the brewer on its back and screw in the legs.

3. Place the brewer on the counter or stand.

4. When the brewer is in position, level it front to back
and side to side by adjusting the legs.

5. Remove the lower cover to access the water and
electrical connections. Knock-outs are provided in the
back and base of the brewer body for the connections.

Water Connection

1. Water inlet is a 3/8 inch male flare fitting.

2. The brewer can be connected to a cold or hot water line. Cold water is preferred for best coffee flavor, but
hot water will allow for faster recovery times.

3. Install a water shut off valve near the brewer to facilitate service. If an in-line water filter is used, it should
be installed after the water shut off valve and in a position to facilitate filter replacement.

4. Flush the water supply line and filter before connecting it to the brewer.

5. Verify that the water line will provide at least ½ gallons per minute for the CBS-51H, and 1 ¼ gallons per
minute for the CBS-52H, and that the water pressure is between 20 and 75 psig.

6. Use a wrench on the factory fitting when connecting the incoming water line. This will reduce stress on the
internal connections and reduce the possibility of leaks developing after the install has been completed.

Warning: Legs are to be adjusted for

le veling the brew e r only. Do not use
f or height adjustment or extend them
higher than necessary.

5

Electrical Connection

1. Verify that the actual voltage at the electrical service connection is compatible with the specifications on the

brewer’s serial number label. Make sure the electrical service includes neutral.

2. The temperature and water tank fill level are pre-set at the factory. There is no need to turn off the heaters
during the installation process. The heaters are disabled by the control board until the tank is full of water.
The heating process will start automatically when the tank has filled.

3. Only 120vac powered units are shipped from the factory with power cords and plugs attached. For other
voltages, a terminal block is provided for connecting the incoming power wires. Consult local codes to
determine if a cord and plug can be installed, or if the unit must be hard wired.

4. A fused disconnect switch or circuit breaker on the incoming power line must be conveniently located near
the brewer, and its location and markings known to the operators.

5. The body of the brewer must be grounded to a suitable building
ground. A ground lug is provided in the brewer next to the power
terminal block. Use only 10 gauge copper wire for grounding.

6. Electrical connections must be secured in-place within the unit to
meet national and local standards.

Warning : To prevent

electrical shock, this
u nit must be properly
gro un ded.

SINGLE PHASE

TERMINAL BLOCK

L1L2N

120V 120V

N

208-240V

GROUND LUG

GROUND

WIRE

3 PHASE

TERMINAL BLOCK

208-240V 208-240V

L1L2L3

208-240V

N

120V

GROUND LUG

GROUND

WIRE

N

Electrical Configurations – US & Canada

7. Finally, connect the incoming power wires to the terminal block in accordance with applicable codes.

Final Setup

1. Turn on the incoming water supply line and inspect both inside and outside of the brewer for leaks in all
fittings and tubes

2. Turn on the incoming power.

3. Turn on the brewer’s main power switch.

4. Within 6 seconds, the hot water tank will begin filling until the water is sensed by the probe at the top of the
tank.

5. The heaters will be disabled by the control board until the tank is full.

6. The brewer will be ready for operation as soon as the ready light comes on to signify that the water tank is
up to temperature. The time required to reach brewing temperature will vary according to the electrical
configuration ordered.

7. Review the Operating Instructions. Brew one full batch (water only) on each side to confirm proper fill
levels. The brewer is factory set with water only (no coffee) to dispense the correct amount of water.

8. Re-attach the covers after one final inspection for leaks. Look closely in the top of the brewer at the
dispense fittings during this inspection.

Operator Training

Review the operating procedures with whoever will be using the brewer. Pay particular attention to the following
areas:

1. Always pre-heat the dispensers before the first use of each day by filling them half way with hot water, and
letting them stand for at least 15 minutes.

2. Don't remove the brew basket until it has stopped dripping.

3. Make sure the dispenser is empty before brewing into it.

4. Show how to attach covers, close, and or secure the thermal dispensers for transporting.

5. Show the location and operation of the water shut off valve as well as the circuit breaker for the brewer.

6. Steam from the tank will form condensation in the vent tubes. This condensation will drip into and then out of
the brew baskets. 1/4 cup discharging overnight is possible. Place an appropriate container under each brew
basket when not in use.

7. We recommend leaving the power to the brewer on overnight. The water tank is well insulated and will use very
little electricity to keep the tank hot. Leaving the brewer in the on position will also avoid delays at the
beginning of shifts for the brewer to reach operating temperature.

6

Operating Procedures

1. Turn brewer on/off switch (

• The power switch will illuminate to indicate that the brewer has power

and is operating.

• When the ready light

temperature. The amount of time required to gain full operating
temperature will vary depending on the electrical configuration that
was ordered, and the temperature of the incoming water.

2. Pre-heat the dispensers.

This step is very important to the overall success of the brewing operation.
FETCO avoids the damaging affects of heat on fresh brewed coffee by using
highly insulated dispensers. The dispenser must be pre-heated with hot water
from the brewer. This preheating process ensures that the coffee in the first
brew starts out hot. Significant heat loss will occur when brewing coffee into a
cold dispenser. Preheating is not required for subsequent brews unless the
dispenser remains empty for an extended period of time and has cooled down.

• Slide the empty brew basket(s)

dispenser(s) in position under the basket for preheating. Select the
half batch mode,

• When the ready light illuminates, start a brew cycle by rotating the brew

lever

(B) to the brew position. This starts clean hot water flowing into

the brew basket and then into the dispenser.

• Stop the cycle when each dispenser is approximately 1/2 full by moving

the brew lever to the off position. This interrupts the brew cycle and
resets the brewer .

• Let the dispensers stand 10-15 minutes, or until use, to allow the heat

from the water to be absorbed by the dispensers.

3. Remove the brew baskets from the brewer when you are certain that the flow of hot water has stopped
from the bottom of the basket.

• H model brewers will have a safety bar

basket a 2-handed operation. This was done to help draw attention to the basket so any residual hot
water or coffee will be noticed by the operator.

• Place a paper filter in each basket to be used. Pour into the paper filter the appropriate amount of pre-

measured, ground coffee. The amount of coffee used will depend on your personal tastes and the
recommendation of your roaster.

• Slide the brew basket back into the rails on the brewer. Insure the latch is outside of the basket.

4. Carefully drain any coffee or preheating water from the dispensers through the faucets before starting
a coffee brewing cycle.

• Overflowing of the dispensers may result if the dispensers are not completely empty when the brew

cycle begins. Verify by opening the faucet over an appropriate container or drain. The last several
cups cannot be seen in the sight gauge tube.

• CAUTION: both the coffee or water may still be hot enough to cause burns, so be careful when

draining the dispensers

5. Place the thermal dispenser(s) in position under the brew baskets.

• Ensure that the brew funnel is in place, the dispenser is empty, and the faucet is closed. If you are

using TPD-1.5 dispensers, also make sure the vent cap on the sight gauge is open.

• The twist lock cover (TPD-1.5 dispensers) is for transporting the dispenser only. It must be removed

before placing the dispenser under the brew basket.

6. Start the brew cycle in the same manner used to start the water used to preheat the dispensers.

• It will not be necessary to interrupt the cycle while brewing coffee. The brewer will return to the

stopped and ready status automatically.

• It is normal for the ready light to go out after the start of the brew cycle. On twin brewers, there is

enough hot water in the brewer to support a second brew, even if the ready light is off. After brewing
on both sides, you must wait for the ready light to come back on.

• The electrical configuration and the electrical power connected to the brewer will determine how long

before the ready light comes back on for the next brew.

E) to the on position

(F) illuminates, the brewer is fully up to

(D) into their rails and put the empty

(A) if you have this option.

(C) in front of the brew basket to make removing the brew

7

C

G

BREW

POWER

F

READY

B

STOP

H

Legend:

Full/half batch switch

A-

Brew lever

B­C-Safety bar
D-Brew basket

On/off switch

E-

Ready light

F-

Brew light

G-

Hot water faucet

H-

(Continued on next page)

A

DE

CAUTION

• Do not remove the brew basket immediately after the brew cycle has finished. Wait until

dripping from the bottom of the brew basket has stopped. Carefully remove the brew basket
while inspecting the inside of the basket for hot coffee that may have been trapped or has not
finished draining.

Service

Warranty

All FETCO brewers come with a limited warranty. All warranty service must be pre-authorized by calling the
FETCO Service Department at [phone].

Principles of Operation

Fill System

The fill system consists of a liquid level control board, a water level probe at the top of the tank, a fill valve, and a fill
tube. As the water rises and touches the probe, continuity is established between the probe tip and the tank body,
and the fill valve closes.

When water is dispensed, the water level drops below the probe. After a 5 second delay, the fill valve opens until
the water touches the probe again.

The 5 second delay, and the speed that water refills the tank during brewing, results in many short bursts of water.
The sound made by these repetitive bursts will let you know the fill system is functioning normally.

The fill system is designed to protect the heaters during both the installation and a loss of the water supply. During
initial installation, or whenever the power switch is turned on, voltage will not be supplied to the thermostat until the
tank fills and water touches the water level probe.
During operation, when water is dispensed and the water level drops below the probe, a fill signal is sent to the fill
valve. If no water is sensed by the probe after 40 seconds, the voltage to the thermostat and the heaters is
removed.

Water enters the tank through the fill tube. A hole is drilled in the upper portion of the fill tube to prevent water from
being siphoned from the tank. The fill tube extends to the bottom area of the tank. This introduces cold incoming
water directly to the heaters and away from the dispense assembly.

The water tank can be drained through a valve located inside the lower compartment of the brewer.

Temperature System:

The temperature system consists of an electronic thermostat, a temperature probe, and heating elements, and is
enabled by the liquid level control board. (See the previous section - Fill Circuit.)

When the water level probe is in contact with water, power is delivered to the thermostat through the liquid level
control board. If the temperature probe senses that the water is not hot enough, the thermostat energizes the
heating elements through the mercury relay, the water is heated, and the ready light goes off.

Once the water temperature reaches the set point, the thermostat disengages power to the heaters and the ready
light illuminates.

The thermostat is adjusted to 205° F ± 2° at the factory. (Slightly lower for high altitude installations.)

8

Timing System:

The timing system consist of the timer and the dispense latch assembly.

When the brew handle is rotated from the stop to the brew position, it pushes the plunger in the latch coil and
closes the micro switch, and the timer starts the timed cycle. It also starts the hot water flowing.

The timer energizes the dispense latch coil, which acts as a magnet, to hold the brew handle in the brew position.
It also lights the brew light. The coil remains energized throughout the brew cycle timed sequence.

When the timer finishes its cycle, it removes voltage from the latch coil. The latch coil then releases the brew
handle, a spring returns it to the stop position, and the flow of water stops. This return opens the micro switch,
stopping voltage from going to the timer. The brew light and the timer are disabled, and wait for the brew handle to
engage the next brew cycle.

Dispense System:

The dispense system is completely mechanical. It is one of the areas that makes FETCO's brewer truly unique.
(See the illustration in this section.)

When you rotate the brew lever down to brew, the end of the dispense tube is submerged in the hot water tank. It
is held in the brew position by the magnetic action of the dispense latch coil.

The brew water travels down the dispense tube to the sprayhead assembly. The rate of flow over the coffee is
controlled by the flow disc above the spray cutter. The standard hole in the flow disc is .240”, except for the CBS­51H10, which is .219”. Other flow discs are available for special situations like high levels of by-pass.

The sprayhead can be assembled incorrectly during cleaning. Refer to the cleaning label on the brewer for proper
assembly. The flow disc has the flange down, flat side up. The six triangle spray cutter has the flange up. The
eight hole spray cutter used in place of the triangle cutter goes bumps down.

A bypass valve and tube are connected to the sprayhead. This valve directs brew water around the outside edge of
the filter paper. The by-pass valve is shipped in the closed position from the factory. Each time the valve is
adjusted, the brew volume is affected. Adjustment of the by-pass valve is for flavor only.
When the timer circuit releases the brew latch, the dispense tube pops back above the hot water level. The
remaining brew water drains from the dispense system leaving it free of standing water. Steam escaping from the
brew tank through this tube inhibits the formation of lime in the brew system.

The dispense system is clean & semi dry for all but the brief time required for the brew cycle. This eliminates any
chance of lime build-up affecting the brew cycle.

It is very easy to dislodge the dispense tube seals while servicing the dispense system. If you see it leaking
profusely, remove the nut and dispense tube. Reset the seal fully into the recess and carefully insert the dispense
tube. Then secure the locknut before you back the tube into position. (See detailed instructions on page 10.)

9

Mechanical Illustration - Dispense System

f

DISPENSE LATCH ASSEMBLY:

SOLENOID ASSY, PUSH ROD, MICROSWITCH,

SOLENOID LATCH PLATE ASSY

BREW START/STOP

HANDLE RETURN

SPRING

DISPENSE FITTING ASSY:

DISPENSE FITTING

DISPENSE FITTING LOCKNUT

SEAL

SEAL LOCKNUT

WATER LEVEL PROBE

BREW START/STOP HANDLE

CONTROL PANEL

BREW

FRONT VIEW

DRIVE SCREW

STOP

BREW BASKET

SPRAY HEAD

DISPENSE TUBE SHAFT

TEFLON SEAL

DISPENSE TUBE

BY-PASS TUBE

BY-PASS VALVE

SIDE (SECTION) VIEW

SEAL LOCKNUT

DISPENSE TUBE

SPRAY HEAD

FLOW DISC

SPRAY CUTTER

LOCKNUT

TEFLON SEAL

HOT WATER TANK

To remove the dispense tube:

1. Unscrew seal locknut and
release the drive screw from
dispense tube shaft.

2. Turn the dispense tube
slightly back and forth, while
pushing the tube into the hot
water tank until it is free from
the sprayhead.
Pull the dispense tube out of
the tank. Remember the tube
is bent inside the tank. The
seal will come out with the
tube.
To install the dispense tube:

1. Clean any lime build up off
the tube and then slide the seal
off. Push the seal carefully
into its chamber in the

itting.(spring towards the hot

water tank.)

2. Place the seal locknut onto
the tube and slide the tube into
the seal. Tighten the seal
locknut.

3. Work the tube back into
the sprayhead seal.

4. Join the dispense tube
shaft and the brew handle
shaft with the drive screw.

10

Adjustments

Thermostat Adjustment:

For equipment manufactured before April 1, 2004

The brewer’s water tank temperature is factory set at 205°F (slightly lower for high altitudes, to prevent boiling).
This setting will deliver water at 195°F ± 5° to the coffee grounds.

Measure the temperature by holding a thermometer in the stream of water flowing out of the hot water faucet. The
temperature should be 195°F ± 5°.

If an adjustment is necessary:

• Remove the upper cover of the unit. On CBS-51H15, also remove the lower cover.

• The thermostat is located in the upper section of the brewer. Locate the adjustment stem, which

may be taped to the thermostat.

• Insert the stem into the adjustment hole. On CBS-51H15, this is done from underneath, through

a hole in the brewer’s frame.

• Turn the adjustment stem slightly clockwise (as viewed from the stem insertion point) to increase

the temperature, and counter-clockwise to decrease the temperature.

• If you decreased the temperature setting, run 2 or 3 brew cycles to allow enough cold water into

the brewer to lower the tank temperature.

• Wait for the “ready” light to come on, and measure the temperature again.

• Repeat until the desired temperature is obtained.

Effective April 1, 2004:

A new digital thermostat and temperature probe were introduced as a direct replacement for the old style
thermostat and probe.

During normal operation, the digital readout displays the last two digits of the actual water temperature. When the
adjustment tool is turned, the readout begins flashing to indicate the set point, not the actual temperature. After the
tool is released, the readout stops flashing and displays the actual temperature again.

A red LED lights when the power to the thermostat is on. A yellow LED lights when the thermostat is calling for
heat.

To adjust, turn the adjustment tool. If no adjustment tool is present, a small flat-head screwdriver may be used. The
display will flash, indicating that the display is showing the set point, not the actual temperature.

The dots below the numbers indicate the temp range.

0 dots – less than 100° F
1 dot – between 100° and 200° F
2 dots – over 200° F

Examples:

7 5

8 7

= 75°F

= 187°F

0 3

11

= 203°F

Timer Adjustment:

For equipment manufactured before April 1, 2004

The timers control the amount of water that is used for brewing. The dual sided
brewer, model # CBS-52H, has separate timers to control each side independently.

All timers are factory set to deliver the correct amount of water.
There are three possible types of timers used:

• Part # 51006 – full batch only (standard)

• Part # 51005 – full / half batch (optional) The half batch setting provides

exactly half the amount of water as the full batch setting.

# 51006 timer, 120V

• Part # 51017 – dual portion (optional) The timer has 2 independent settings.

Adjustment of the factory settings may be desired to compensate for the amount of
water absorbed by the coffee grounds. Approximately 2 ounces of water will be
absorbed for every ounce of coffee.

To adjust the timer:

• Remove the brewer’s upper cover.

• If your brewer has the half-batch or dual portion option, make sure the

selector switch is in the full batch position.

• Note the current setting of the dial before making any adjustments.

• Turn the knob clockwise to increase and counter-clockwise to decrease the

#51005
timer, full/half, 120V

timer setting. On the dual portion timer. the knob labeled “T1” controls the
full batch setting.

• Run a full brew cycle to check the brew level.

• If necessary, repeat the adjustment until the desired volume is obtained.

• For the dual portion timer, set the selector switch on “half” and adjust the

knob labeled “T2” until the desired volume of water is obtained.

• Replace the cover.

#51017
timer, dual portion, 120V

Effective April 1, 2004:

A new digital timer was introduced as a direct replacement for the three old style timers. When a batch selector
switch is not connected, the timer functions as a single portion timer.

The timer has two independent settings, with three dials for each setting. The first dial in each group sets 100
second increments, the second dial sets 10 second increments, and the third dial sets 1 second increments.

A red LED lights when the power to the timer is on. A yellow LED lights when the timer is running.

A small flat head screwdriver is required to adjust the dials.

part # K034, digital timer, 100-120 VAC
part # K036, digital timer, 200-240 VAC (export versions only)

12

Water Level Control Board

Effective April 1, 2004:

A new digital water level control board was introduced as a direct replacement for the old style liquid level control
board. The new board features a jumper to adjust its’ sensitivity for reverse osmosis or other types of ultra-pure
water.

The default jumper setting is LO (50K ohms) for normal water. If the brewer tank overfills because of ultra­pure water, the jumper should be set to HI (100K ohms).

A red LED lights when the power to the board is on.

A green LED lights when the water level probe detects that the tank is full.

A yellow LED lights when the FILL circuit is energized.

A second yellow LED lights when the HEAT circuit is energized.

Bypass Adjustment: (Not available on CBS-51H10)

The purpose of the bypass valve is to allow a portion of the brewing water to flow between the brew basket and the
wire insert, directly into the server, without coming in contact with the coffee grounds. The bypass can be adjusted
from 0% to 33% of the total brewing water. Dual brewers (CBS-52H), have separate bypass valves on each side.
Unless requested at the time of order, all brewers are shipped with the bypass valves closed (0%). Adjusting the
bypass always changes the total brew volume, so the timer setting must always be checked and adjusted.

To adjust the bypass:

• Remove the brewer’s upper cover.

• The bypass valve is located above the brew basket, to the right and to the front, as you are facing

it.

• Remove the brew basket.

• Place a container under the spray head, and a separate container under the bypass hole.

• Turn the bypass valve clockwise to decrease, and counter-clockwise to increase the bypass

amount. A good starting point would be one full turn for each 5% change.

• Brew a full cycle and measure the amount of water in both containers.

• The ratio of the bypass water to the total in both containers is the bypass percentage.

example: ½ gal. bypass + 1 gal. from spray head = 1 ½ gal. total. Bypass = 33.3%.

• Several adjustments may be necessary until the desired results are achieved.

13

Brewer Parts

CBS-51H10 Parts List

Part # Description

09001 Brew Basket Wire insert 13x5
101010 Brew basket assy. 13 x 5
002003 Brew Cone Weldment 13 x 5

85004 Brew handle Return Spring

14002 Brew handle Latch Plate
002005 Brew handle Latch Weldment

85005 Brew handle latch plate Retaining clip

31015 Spray Cutter Locknut

05001 spray cutter, 6 hole

05017 Spray cutter FLOW DISK ( .219 dia. opening)

33002 Spray Head Lock Nut

31125 Spray Head (Large brass part)

24008 Dispense Tube Seal 7/16"
002049 Dispense Tube Weldment 7/16" dia.

31070 Fitting (by pass & tank drain outlet)

31006 Locknut 1/8" NPT, vent
108034 Liquid Level Control Brd. 100-120VAC, 50-100K ohm
108035 Liquid Level Control Brd. 200-240VAC, 50-100K ohm (EXPORT)

K034 Digital Timer Kit, 100-120VAC

K036 Digital Timer Kit, 200-240VAC (EXPORT)
102008 Dispense Latch, Solenoid assy. 120vac
102039 Dispense Latch, Solenoid assy. 220vac (export)

K033 Digital thermostat, 100-120VAC

K035 Digital thermostat, 200-240VAC (EXPORT)

58004 Lamp," brew" indicator, amber, 220VAC (EXPORT)
58026 Lamp, "brew"
82018 Brew handle Screw, 8-32 x 2" ss r.h.
82004 Brew handle Screw, 6-32 x 5/8" ss r.h.

13005 Brew handle Safety Handle
102010 Brew handle start/stop assy.
002036 Brew handle Weldment

86001 Brew handle Bushing

52077 Switch, power w/ circuit breaker, 120 VAC

52076 Switch, power w/circuit breaker, 220 VAC (EXPORT)

58006 Lamp, "ready" indicator, green, 220VAC, EXPORT

58027 Lamp, "ready"

71023 Faucet upper assy., HOT water faucet (Safety Handle)

71003 Faucet Seat cup, HOT water faucet

73002 Leg assy. 4", adjustable
102041 Terminal block assy. 3 pole
102040 Terminal block assy. 2 pole

52003 Ground lug terminal MEDIUM size

31028 Fitting (dispense & fill valve outlet & hot water outlet)

57017 Fill Valve assy., 220vac (S-53 export)

57006 Fill Valve assy.,120vac, (S-53)

31031 Fill Valve Fitting 3/8" MPT x 3/8" Flare elbow (inlet std.)

31055 Fill Valve Fitting 3/8" MPT x 3/8" comp. elbow (inlet opt)

52015 Relay mercury 20amp SP 120VAC

52021 Relay mercury 20amp SP (export 208-240vac coil)

52016 Relay mercury 20amp DP 120vac

52032 Relay mercury 20amp DP (export 208-240v coil)

K044 Water Level Probe Assy. (replacement for 21043 housing and 2048 probe)
31036 Thermostat Temp probe tank Fitting 1/4" MPT x 1/4" comp.
31037 Thermostat Temp probe Locknut 1/4" NSPL (temp. probe tank fitting)
53026 Thermostat Temp probe 12" (use with K033 digital thermostat or 53012 thermostat)

102213 Digital temp probe assy., 12” (use with K033 digital thermostat only)

25004 Thermostat Temp probe Lead Cover (tubing)
31081 Plug 1/4" MPT hex head
24002 Tank Cover Gasket

Tank Cover assy.

83006 Heater Washer, 1"o.d. x 1/2" I.d.

107007 Heater element 1800w 120v bottom mount
107012 Heater element 1800w 240v bottom mount
107001 Heater element 2300w 240v bottom mount

84004 Heater Locknut, 1/2-20
83004 Heater Gasket 3/4" o.d.
82019 Heater Screw, 10-32 x 1/4" ss (heater connection)
33006 Tank Fitting (dispense tube 7/16" )
33007 Tank Locknut (for tank dispense tube fitting 7/16")
31052 Dispense Tube seal LOCKNUT 7/16"
31005 Tank Fitting (tank vent)
25021 Silicone Tubing (vent) 1/4 x 3/8 x 6 1/2"
31023 Faucet Fitting 1/4" FPT x 3/8" Comp. (hot water faucet)

(Drawing not available at time of publication.)

14

32043 Tube (tank to hot water faucet)
31009 Locknut 3/8" NPSL
31021 Tank drain Fitting 3/4 x 16 x 1/4" FPST HEX
33011 Tank drain Fitting Locknut 3/4 x 16
31011 Locknut 3/4 x 16 (tank drain, inlet tube)
31082 Nipple 1/4" MPT x 3/8" MPT
34004 Valve ball 3/8" x 3/8" FPT
31073 Tank Fitting 3/8" MPT x 3/8" hose barb (hot water tank out)
25002 Tank vent tube, Silicone Tubing 1/4 x 7/16 x 7 3/4"
58029 Switch, slide, full/half batch selector, w/harness (optional)

For current parts pricing, visit www.fetco.com.

15

CBS-51H15, 52H15, & 52H20 Parts List

Part # Description Drawing Item # used on

002022 brew cone weldment 16x6 16 51 52

09006 brew basket wire insert 16x6 17 51 52

101165 brew basket assy. 16 x 6 18 51 52

01133 brewer upper cover 20 51
01056 brewer upper cover 20 52
85004 brew handle return spring 21 51 52
14002 brew handle latch plate 22 51 52

002005 brew handle latch weldment 23 51 52

85005 brew handle latch plate retaining clip 24 51 52
31015 spray cutter locknut 25 51 52
05014 spray cutter ( 8 + 1 ) 26 51 52
05002 spray cutter flow disk ( .240 dia. opening) 27 51 52
33002 spray head lock nut 28 51 52
31068 spray head (large brass part) 29 51 52
24008 dispense tube seal 7/16" 30 51 52

002033 dispense tube weldment 7/16" dia. 31 51 52

31070 fitting (by pass & tank drain outlet) 32 51 52
25001 by-pass silicone tubing 1/4 x 7/16 x 2 7/8" 33 51 52

102028 by-pass valve assy. 34 51 52

32023 by-pass tube (by-pass valve inlet) 35 51 52
83005 by-pass & misc. washer 36 51 52
31006 locknut 1/8" npt (1 on vent & 2 on bypass valve) 37 51 52

108034 Liquid Level Control Brd. 100-120VAC, 50-100K ohm
108035 Liquid Level Control Brd. 200-240VAC, 50-100K ohm (EXPORT)

K033 Digital thermostat, 100-120VAC

K035 Digital thermostat, 200-240VAC (EXPORT)

102008 dispense latch, solenoid assy. 120vac 40 51 52
102039 dispense latch, solenoid assy. 220vac (export) 40 51 52

K034 Digital Timer Kit, 100-120VAC

K036 Digital Timer Kit, 200-240VAC (EXPORT)

001009 brewer body weldment 43 51
001008 brewer body weldment 43 52

58004 lamp," brew" indicator, amber (EXPORT) 44 51 52
58026 lamp, "brew" 44 51 52
82018 brew handle screw, 8-32 x 2" ss r.h. 45 51 52
82004 brew handle screw, 6-32 x 5/8" ss r.h. 45 51 52
13005 brew handle safety handle 45 51 52

102010 brew handle start/stop assy. 45 51 52
002036 brew handle weldment 45 51 52

86001 brew handle bushing 46 51 52
52077 switch, power w/ circuit breaker, 120 VAC 47 51 52
52076 switch, power w/circuit breaker, 220 VAC (EXPORT) 47 51 52
58006 lamp, "ready" indicator, green, 220VAC, EXPORT 48 51 52
58027 lamp, "ready" 48 51 52
71023 faucet upper assy., hot water faucet (safety handle) 49 51 52
71003 faucet seat cup, hot water faucet 49 51 52
73011 leg, 4" adjustable 50 51 52

002023 brewer lower cover weldment 51 52
102042 terminal block assy. 4 pole 52 52
102041 terminal block assy. 3 pole 52 51 52
102040 terminal block assy. 2 pole (export & 120v 11 & 51's) 52 51 52

52003 ground lug terminal medium size 53 51 52
31028 fitting (dispense & fill valve outlet & hot water outlet) 54 51 52
31055 fill valve fitting 3/8" mpt x 3/8" comp. elbow (inlet opt) 54 51
57004 fill valve coil, 120vac (s-45) 55 51 52
57022 fill valve assy.,brass body, 220vac (s-45 export) 55 51 52
57001 fill valve assy.,120v, brass body w/bracket (s-45) 55 51 52
57021 fill valve coil, 230vac (s-45 export) 55 51 52
57003 fill valve, repair kit (s-45) 55 51 52
31031 fill valve fitting 3/8" mpt x 3/8" flare elbow (inlet std.) 56 51 52
31055 fill valve fitting 3/8" mpt x 3/8" comp. elbow (inlet opt) 56 52
52021 relay mercury 20amp sp (export 208-240vac coil) 57 51
52016 relay mercury 20amp dp 120vac 57 51
52017 relay mercury 30amp dp 120vac 57 51
52018 relay mercury 35amp dp 120vac (208-240v 1ph brw.) 57 51 52
52015 relay mercury 20amp sp 120vac (120v brewer) 57 51
52034 relay mercury 30amp tp (export 208-240v coil ) 57 51 52
52033 relay mercury 30amp tp 120vac (208-240v 3ph brw.) 57 51 52
52032 relay mercury 20amp dp (export 208-240v coil) 57 51
52030 relay mercury 35amp dp (export 208-240v coil) 57 51 52
52029 relay mercury 30amp dp(export 208-240v coil) 57 51
21026 water level probe housing 58 51 52

002010 water level probe weldment 59 51 52

31036 thermostat temp probe tank fitting 1/4" mpt x 1/4" comp. 60 51 52
31037 thermostat temp probe locknut 1/4" nspl (temp. probe tank fitting) 61 51 52
53015 thermostat temp probe 14" (use with K033 digital thermostat or 53012 thermostat) 62 51 52

16

38 51 52
38 51 52
39 51 52
39 51 52

41 51 52
41 51 52

102198 Digital temp probe assy., 14” (use with K033 digital thermostat only) 62 51 52

25004 thermostat temp probe lead cover (tubing) 62 51 52
31081 plug 1/4" mpt hex head 63 51 52
24002 tank cover gasket 64 51 52

102013 tank cover assy. 65 51 52

83006 heater washer, 1"o.d. x 1/2" i.d. 66 51 52
107002 heater element 3000w 240v assy. 66 51 52
107003 heater element 4000w 240v 66 51 52
107005 heater element 1800w 120v assy. 66 51

84004 heater locknut, 1/2-20 66 51 52

83004 heater gasket 3/4" o.d. (also used behind faucet on 30's) 66 51 52

82019 heater screw, 10-32 x 1/4" ss (heater connection) 66 51 52

33006 tank fitting (dispense tube 7/16" ) 67 51 52

33007 tank locknut (for tank dispense tube fitting 7/16") 68 51 52

31052 dispense tube seal locknut 7/16" 69 51 52

31005 tank fitting (tank vent) 70 51 52

25021 silicone tubing (vent) 1/4 x 3/8 x 6 1/2" 71 51 52

31023 faucet fitting 1/4" fpt x 3/8" comp. (hot water faucet) 72 51 52
102024 tube assy. tank outlet to hot water faucet (new ) 73 52
102023 tube assy. tank outlet to hot water faucet (new ) 73 51

32032 tube (tank to hot water faucet connecting ) 73 51 52

32033 tube (tank to hot water faucet connecting ) 73 51

31009 locknut 3/8" npsl 74 51 52
004004 tank weldment 75 51
004005 tank weldment 75 52

32034 tube (fill valve to tank water inlet connecting) 76 51

32031 tube (fill valve to tank water inlet connecting) 76 51 52
002043 tank fill tube weldment 77 51 52

31021 tank drain fitting 3/4 x 16 x 1/4" fpst hex 78 51 52

33011 tank drain fitting locknut 3/4 x 16 79 51 52

31011 locknut 3/4 x 16 (tank drain, inlet tube) 79 51 52

31082 nipple 1/4" mpt x 3/8" mpt 80 51 52

34004 valve ball 3/8" x 3/8" fpt 81 51 52

31073 tank fitting 3/8" mpt x 3/8" hose barb (hot water tank out) 82 51 52

25002 tank vent tube, silicone tubing 1/4 x 7/16 x 7 3/4" 83 51 52

45014 nameplate (-2) 85 52

45016 nameplate 85 51

45014 label (-2) vertical panel overlay 86 51 52

58024 switch, toggle, full/half batch selector, w/harness (optional) 88 51 52

58029 switch, slide, full/half batch selector, w/harness (optional) 88 51 52

58016 switch, tea/coffee brew cycle (ice tea option) 89 51 52

09001 brew basket wire insert 13x5 (ice tea, 1/2 batch) 90 51 52
101010 brew basket assy. (13 x 5 ) (current 1/2 batch option) 90 51 52
002003 brew cone weldment 13 x 5 (also 1/2 batch option) 90 51 52
002024 brew cone weldment (ice tea) 13 x 5 91 51 52
002037 brew cone weldment tea 91 51 52
101081 brew basket assy. tea 16 x 6 91 51 52

For current parts pricing, visit www.fetco.com.

17

Parts Drawing: CBS 51H15 & 52H15

20

29

24

21

22

23

28

27

26

25

17

19

18

16

31

30

32

33

35

88

34

36

37

44

45

90

91

38

89

86

46

47

49

48

50

85

51

39

40

41

42

43

69

37

70

71

72

53

52

54

55

56

62

60

59

61

58

67

30

68

74

54

74

73

78

79 80

81 82

83

65

64

63

61

75

66

77

76

78

57

EXPLODED SCHEMATIC OF CBS-52H

DWG. 701-009

18

Troubleshooting

Brewing Problem Possible Cause Solution

Brew handle will not stay down

No power to the brewer

Bad timer or dispense latch

Bad dispense latch assy.

Bad dispense latch assembly

Brew handle stays down but no water is
dispensed

Short brew levels EVERY BREW

Water filter clogged (See details in next section)
Spray head clogged -Clean and or replace the sprayhead
(One or Both sides are
affected and levels are consistent)

Short brew levels SOME BREWS

Weak dispense latch assembly

(One or Both sides are affected and
levels are erratic)

Brew Time required to fill LUXUS are
not the same for both sides

High brew levels EVERY BREW

(overfills but does stop)

SOME BREWS Thermal server not empty -Empty the server and try again

Brew basket or filter overflows

Weak Coffee

Improper dose -Measure and confirm correct dose
Filter papers -Make sure only one paper is used
Cracked dispense tube -See “spray head drips MAJOR”, below
Low brew temperature

Grounds not saturated
Half batch used incorrectly -Use smaller “half batch” brew basket

-Discourage half batch use

-Investigate the need for a smaller brewer
Water Softener in use -Move brewer water feed to a non-softened source.

No bypass EVERY BREW →
SOME BREWS→

Spray head / brew basket drips either
side or both
MINOR

Condensation from water tank

Power switch off. -Turn switch on.

(Brewer lights are not illuminated)

assembly.
(Brew light does not come on and
handle won’t stay down)

(Brew light does come on and
handle won’t stay down)

(brewer buzzes when in brew cycle)
No water reaching the brewer -Make sure the shut off valve is open.

Flow discs in spray heads in upside
down

Timer/s are set too low -Advance timers to proper level.
Incoming Voltage is too low for

timers to function at proper time
sequences

Water filter clogged.
(problem is worse during
simultaneous brews)

(usually buzzes during cycle)
Water pressure or flow rate is too
low or fluctuates too much to
support a full brew.
(problem is worse in simultaneous
brews)
Brewer is not level -With an accurate level, level the brewer front to back and

Timer/s are set too high -Adjust timers down to appropriate level

-Call FETCO Service Dept. to discuss.

Spray head missing -Attach spray head assembly.

(Temperature inside the hot water
tank is set to 205° F, the metal
delivery system drops the temp.)
Spray head missing -Replace spray head

Degassing - extremely fresh coffee -Call FETCO Service Dept. to discuss.

Bypass valve closed -Open bypass valve
Flow disc wrong size or missing -Correct or replace flow disc
Condensation around the

sprayhead area

dripping through dispense tube

-Make sure the brewer is plugged in.

-Check the wall circuit breaker / reset

-Turn the brewer power switch off then back on (it has an
internal breaker)

-Check for voltage reaching the timer from the dispense
latch assembly if yes replace timer. If no, replace latch
assy.

-Replace the dispense latch assembly

-Replace the dispense latch assembly

-Check water line for kinks; replace line if necessary

-Check to see if filter is clogged by changing it.

-Reassemble spray heads - bumps on spray cutter face ↓
with flange on flow disc facing ↓

-Reset wall circuit breaker as one side may drop out & not
flag the breaker.

-Call an electrician to find loose connections in the building

-Replace water filter

-Replace dispense latch assembly.

-Make sure brewer has a dedicated water line

-Ensure that the shut off valve is open all the way (Never
use needle saddle valves)

-Increase the diameter of the water line to the brewer and
or find stable source.

left to right by adjusting the feet.

[phone]

-Adjust thermostat so the water stream measured at the
bottom of the brew basket, 1/3 of the way through the brew
cycle, equals 190 degrees + or - 5 degrees

[phone]

-Wipe sprayhead area after brewing; place an empty
container under brew cone when not in use.

-Insert an empty brew basket and server under brew heads
when not in use

19

Brewing Problem Possible Cause Solution

Spray head / brew basket drips either
side or both
MAJOR

Brewer won’t stop brewing

(not same as high brew levels)

Water pressure over 75psi -Place a water pressure regulator on the line and reduce to

Dispense tube drive screw off. A

Water level probe bad or encrusted

Bad liquid level control board -Replace the LLC board if grounding the probe end of the

Bad or stuck fill valve -Rebuild or replace the fill valve if no voltage is on the coil

Coffee tastes too strong
Short brew levels -See “Short brew levels”, above.

Cracked dispense tube/s
(This problem starts out minor but
gets steadily worse)

Fill valve not sealing
(Will drip even with power off.)

Dispense tube cracked -See “sprayhead drips MAJOR” above
Mechanical binding

(brew handle stays down / brew light
turns off at normal time)

2.5” screw that connects the handle
to the dispense tube at the brass
sprayhead tower.
(handle returns up and brew lamp
turns off but brewing continues)

with lime.
(causes brewer to continue filling hot
water tank which will overflow into
the brew baskets)

Incorrect dosage -Measure and confirm the correct amount of coffee required

-Replace both dispense tubes even if other side is not
dripping

-See next section - “Brewer won’t stop brewing”, “Bad or
stuck fill valve”.

-Re-align the brew handle / brass sprayhead tower / and
dispense tube into a straight line by moving brass tower

20-75 psi

-Ensure that the drive screw is straight (can be straightened
by hand while still in the brew handle) and reconnect to the
dispense tube. The flange that the drive screw engages
MUST be held flat against the brass sprayhead tower,
without being able to back out.

-Clean lime build up on the probe tip
and/or tank wall. (Holding the probe wire (green) from the
probe end to the body of the brewer should stop the fill if
the probe is bad but the liquid level board is good)

(green) probe wire to the body of brewer does not remove
the voltage at the fill terminal on the LLC board.

(it is not magnetic) and it still passes water to the tank.
(Disconnect the outlet side to see if it leaks water to the
tank)

Temperature Problem (brewer
only)

See also LUXUS problems
Brew water is cold / not hot enough,

ready light is OFF.

(Before proceeding, make sure water tank
refills when water is dispensed. The
brewer will not heat unless the tank is full.)
Defective liquid level control board.

Bad connections on mercury relay.

Defective mercury relay.

Bad heating element/s.

Brew water is cold / not hot enough,
ready light is ON.

Slow to recover temperature

(Ready light takes along time to come
back on after brewing.)

Boiling

Possible Cause Solution

No power to brewer. -Make sure power switch is on.

(No power to thermostat).

(No power to heaters).

(No power to heaters).

Bad Thermostat
(the thermostat believes that it is at
set temperature)

Low brew temperature setting on
thermostat

Brewers with more than one heater
can have just one fail

Hot water tank limed up -Remove access cover to the hot water tank and inspect

Thermostat set too high for altitude
(Denver etc.)
Defective thermostat -Replace the thermostat and or thermal probe. It’s not

-Reset machine circuit breaker.

-Check power connection. (plug or hard wire connection).

-Check building circuit breaker. (Always reset breaker by
switching off, then on.)

-With power on, and water tank full, check LLC board for
120 volts on brown wire and neutral. Replace LLC board if
there is no voltage.

-Check relay for burned or loose connections. Replace
with high temperature connectors if necessary.

-Check input and output voltages on relay. 120 volts on
blue wire (input) but no voltage out to heaters indicates a
bad relay.

-Check amperage draw on heater wires. 0 amps = bad
heater.

-Replace the thermostat and or thermal probe. It’s not
possible to trouble shoot the probe.

-See “Low brew temperature” under “Weak Coffee”
section.

-Check amperage draw on heater wires. 0 amps = bad
heater.

for lime. Remove the brewer for shop de-liming if build up
is thick.

-Reduce temperature setting to 3 degrees below boiling at
your altitude

possible to trouble shoot the probe.

20

LUXUS Server Problem Possible Cause Solution

LUXUS leaking from the base

Bad O-ring gasket behind faucet

LUXUS leaking from sight gauge
Sight gauge cap not tight -Tighten gauge cap (show operators how this could have

Lower gasket missing or bad -Replace and or discourage casual cleaning practices
Coffee not hot enough

Attempting to hold coffee too long. -Review discard times
Using 1/2 batch on regular basis -Encourage full batch use except at end of day or shift.

Judging temperature from a sample

Drip from faucet

Faucet seat cup -Remove faucet bonnet (top part with handle attached) and

Coffee won’t dispense

Overflow of coffee, or water from
cleaning running down the side and
collecting in the black plastic base

-Remove the plastic base (it slips on and off) wipe the
interior and plastic base dry and reassemble. Monitor brew
practices & do not clean containers in sinks or dishwashers

(1.5 gallon LUXUS only)

-Remove the faucet, then unbolt the faucet shank from the

shank

LUXUS and replace the O-ring.

(1.5 & 3 gallon LUXUS)
Brew level set too high -Adjust timers for proper level

been loosened when the vent cap was opened)

LUXUS not preheated before first
brew of the day

-Preheat the LUXUS 1/2 full with hot water and let stand for
15 minutes

Explore the need for smaller brewers

-A small amount of coffee in the faucet body will cool in

that is too small, taken from an

about 15 minutes.

infrequently used LUXUS
Blockage in faucet

(hair from cleaning brush, coffee

-Remove faucet bonnet (top part with handle attached) and
clean seat cup and faucet body. Clean on regular basis

oils, etc.)

replace seat cup. Stained cups are OK cracked or brittle
are not.

Vents closed on top of gauge tube
and or twist lock cover

-Open vents (vents are closed only for transporting the
servers or to extend holding times prior to serving coffee)

21

22

23