AMW B-SERIES
OPERATOR MANUAL
INSTALLATION
START UP PROCEDURE
WATER CONNECTION
The National Sanitation Foundation requires the following for an NSF approved water hook-up:
• A quick disconnect water connection or enough coiled tubing so that the machine can be moved for cleaning underneath.
• An approved backflow prevention device, such as a double check valve to be installed between the machine and water supply.
A 1/4” male flare adapter is provided. Installation to a water filter system is recommended to prevent lime and scale build-up in the machine.
• Water pipe connections and fixtures directly connected to portable water supply shall be sized, installed and maintained in accordance with
federal, state and local codes.
• Flush the water line to purge any debris from the supply line.
Connect a 1/4” pressurized water line to the 1/4” male connection
(on rear of brewer) and turn the water supply on.
a) Minimum water pressure to the machine: 30 psi
b) Maximum water pressure to the machine: 80 psi
NOTE: Single head machines may be used without a pressurized water
supply. (See Pour-Over Mode section)
ELECTRICAL CONNECTION
NOTE: Wiring connections should be performed by a qualified technician.
(Refer to serial tag to verify model number of your machine)
• Remove front panel.
• Connect electrical service through rear of machine to terminal block
(inside front panel) marked L1, N, and L2. (See Figures A and B)
• On dual volt units, flip voltage switch (inside front panel next to terminal
block) to 120V for 120 Volt service or 240V for 120/208, or
120/240 Volt service. (See Figures A, B and table below)
• Re-install front panel.
• Turn on (plug-in) electrical service to brewer.
• Water tank will fill after a 7-second delay. The machine will make a
hissing sound when this occurs. On single head models, allow
approximately 1.5 minutes for the brewer to fill. On two head models, allow approximately five minutes for the brewer to fill.
NOTE: If water supply is inadequate or not connected, display will read “P-O” after 4 minutes of fill time (Refer to Pour-Over Mode
section). If Fill Cycle times out and display reads “P-O” before tank is full, turn unit OFF then ON again to reset and continue filling.
• The tank will begin heating slightly before machine fills.
• Turn brewer on by pressing ON/OFF switch in front of machine. (Light will illuminate)
• The brewer settings can be adjusted through the front touch pad. (Refer to Adjustments section)
• The water will be hot and the brewer will be ready to brew when “READY” light illuminates.
• Set Brew volume. (Refer to Setting Brew Volume section)
POWER REQUIREMENTS: (Refer to serial tag for voltage to be supplied.)
Figure A
Figure B
For 120V, 15A or 20A Service
(2 Wire + Ground)
For 120/208-240V, 20A Service
(3 Wire + Ground)
L1 N
L2
L1 N
L2
CONNECT NEUTRAL (N) TO MIDDLE
CONNECT HOT (L1) TO LEFT SIDE
CONNECT GROUND TO SCREW
CONNECT HOT (L2) TO RIGHT SIDE
CONNECT NEUTRAL (N) TO MIDDLE
CONNECT HOT (L1) TO LEFT SIDE
CONNECT GROUND TO SCREW
ON DUAL VOLT UNITS,
F
LIP SWITCH TO “120V”
O
N DUAL VOLT UNITS,
FLIP SWITCH TO “120V”
Applied Volts Models Watts Amps NEMA Plug Cord AWG Connections
120
B-3, B-3WL, B-3WR 1800 15
5-15P, 5-20P for CUL 3X14
Hot to L1
Neutral to N
Ground to ground screw
B-SAP, B-ID 1780 14.9
120/208
B-3, B-3WL, B-3WR 2920 14.1
L14-20P 4X12
Hot to L1
Neutral to N
Hot to L2
Ground to ground screw
B-SAP, B-ID, B-DAP, B-DGP 2620 12.6
B-6 5110 24.6
L14-30P 4X10
B-DAP, B-DGP (30A) 4510 21.7
120/240
B-3, B-3WL, B-3WR 3800 15.9
L14-20P 4X12
Hot to L1
Neutral to N
Hot to L2
Ground to ground screw
B-SAP, B-ID, B-DAP, B -DGP 3500 14.6
B-6 6600 27.5
L14-30P 4X10
B-DAP, B-DGP (30A) 6000 25
FACTORY SETTINGS (for each dispense head)
• Tank temperature is set at 200 degrees F.
• Brew time is pre-set at 2:20. (Volume/time to be set on-site)
• Pulse Brew is set for 1 pulse, 20 sec on, 20 sec off.
• Warmer Energy Savings mode is set for 60-minutes. (“OFF” for models without warmers)
• Low Temp / No Brew option is set to “OFF” or disabled.
• Pour over setting override is set to “no” or plumb in.
• Settings lock-out jumper on controller is set in “unlock” position.
ADJUSTMENTS:
Refer to B-Series Programming Chart on page 5.
NOTE: Set each dispense head individually.
Tank Temperature:
Left display controls this.
Note: On two head models, tank temperature must be set to the same setting on both heads in order for the unit to operate properly.
• Press-and-hold both “up” and “down” arrows for 5 seconds.
• The display will indicate either “d F” or “d C”. (Fahrenheit or Celsius)
• Press up or down arrow to change from one scale to the other.
• Press “BREW” button to accept and proceed to the next setting.
• The display will read temperature value in the scale previously selected.
• Press up or down arrow to change temperature value.
• Press “BREW” button to accept and proceed to the next setting.
Brew Time:
• The display will read “br ”. (brew time)
• Press “BREW” button to proceed to the next setting.
• The display will read the set brew time in minutes and seconds. (ex: 2.20)
• Press up or down arrow to change time value.
• Press “BREW” button to accept and proceed to the next setting.
Pulse Brewing Mode:
• The display will read “P-b”. (pulse brew)
• Press “BREW” button to proceed to the next setting.
• The display will read “OFF” - “1”-”6”.
• Press up or down arrow to change number of pulses.
• Press “BREW” button to proceed to the next setting.
• The display will read “0.05” - “0.30”.
• Press up or down arrow to change pulse-on time for each pulse in seconds.
• Press “BREW” button to proceed to next setting.
• The display will read “0.05” - “0.30”.
• Press up or down arrow to change pulse-off time for each pulse.
• Press “BREW” button to accept and proceed to the next setting.
Energy Savings Mode (Warmer shut-off):
• The display will read “E-S”. (energy savings)
• Press “BREW” button to proceed to the next setting.
• The display will read “Off” - “10” - “240” in multiples of 10.
• Press up or down arrow to change time value in minutes. Must be “OFF” for models without warmers.
• Press “BREW” button to accept and proceed to the next setting.
Low Temp/No Brew Mode:
• The display will read “Ltn” (Low Temp/No Brew).
• Press “BREW” button to proceed to the next setting.
• Press up or down arrow to change to “ON” or “OFF”.
• Press “BREW” to accept and proceed to the next setting.
Page 2 B-SERIES
B-SERIES Page 3
ADJUSTMENTS (cont.):
Refer to B-Series Programming Chart on page 5.
NOTE: Set each dispense head individually.
Pour-Over Mode
Left display controls this.
• The display will read “P-O” (pour-over).
• Press “BREW” button to proceed to the next setting.
• Press up or down arrow to change to “YES” or “NO”. Plumbed-in units must be set to “NO”.
• Press “BREW” button to accept and exit menu.
SETTING BREW VOLUME:
• Remove brew basket & spray head.
• Make sure “READY” light is on.
• Place empty server under exit nozzle to capture water.
• Press “BREW” button to fill water lines.
• Press “BREW” button again after approximately 10 seconds to stop water flow.
• Empty server then place under exit nozzle.
• Press-and-hold “BREW” button for 5 seconds until display reads “Pro”, then release.
• Press-and-release “BREW” button to initiate brew.
• The brew valve opens and the time begins to count up on display.
• Water will flow into decanter.
• When water level reaches desired amount, press-and-release “BREW” button again.
• Time value will flash in the display.
• Press-and-release “BREW” button within 10 seconds to set time.
• Reinstall spray head and brew basket.
• Repeat process for each brew head.
BREWING PROCEDURE:
• Place a new paper filter in the brew basket.
• Put desired amount of ground coffee in brew basket. (3.5 oz (100 grams) maximum)
• Place decanter or airpot under brew basket.
• Be sure lower warmer is on. (if available)
• Press “BREW” button to start brewing.
The “READY” light will flash for the entire brew cycle.
Water will dispense for the set time of brew, and light will flash after water is dispensed to denote “drip time”.
(ex.. Time set for 2:30, water is dispensed for 2:30, and light continues to flash for another 1:15 for total brew cycle of 3:45.)
Do not remove the brew basket while the “READY” light is blinking.
A stop function is added to the “BREW” switch. Pressing the “BREW” switch during a brew cycle will stop the brew. Coffee will need to be
emptied from brew basket and brew procedure will need to be started again.
After a brew cycle, the tank must reheat and the “READY” light must be lit before starting the next cycle. Reheat (recovery) time is dependent
on voltage applied and inlet water temperature.
Approximate reheat times for a 64 oz decanter are as follows:
120 Volt supply: 3-4 minutes; 120/208 Volt supply: 30-90 seconds; 120/240 Volt supply: 0 – 30 seconds
PULSE BREWING MODE:
• When mode is “ON” (number of pulses, pulse on, and pulse off time), and a brew cycle is initiated, water is dispensed for the ON time then
stops for the OFF time to define one pulse. This repeats for number of pulses programmed. After pulsing is finished, the water continues to
dispense for the remaining set time. During the pulse-off time, the water infuses the coffee and the bed rises to allow for better extraction.
• When mode is “OFF” and a brew cycle is initiated, water is dispensed continually for the entire set time without any delay.
ENERGY SAVINGS MODE (WARMER SHUT-OFF):
(ONLY FOR MODELS WITH WARMERS)
When set time has elapsed after a brew cycle, the lights above the warmer switches will flash and the warmers will automatically turn off. To
stop lights from flashing, press one of the warmer switches. To turn warmers back on, press corresponding warmer switch. The timer will reset
when a new brew cycle is initiated.
Refer to Adjustments section to adjust time values or simply disable mode. Time values may be adjusted from OFF to 10 minutes to 240
minutes in increments of 10 minutes.
Page 4 B-SERIES
LOW TEMP/ NO BREW MODE:
When set to “ON”, a brew cycle cannot be initiated until tank is hot and “READY” light is ON.
When set to “OFF”, a brew cycle may be initiated at any time.
POUR-OVER MODE:
Note: Not available on B-6, B-DAP, and B-DGP (twin) models.
Brewers are capable of operating without a pressurized water source.
If there is no pressurized water source, brewer can be set-up as a pour-over.
1. If no water is in the tank to begin with, pour about three decanters of fresh water into the basin
(Fig. D). A small amount of water should remain in the basin.
2. If tank already has water, pour fresh water into basin (Fig D) until a small amount is in the basin
and no longer drains into the tank.
3. Place server under the EMPTY brew basket.
4. Turn power on to machine
5. Go into Settings Mode and change “P-O” to “YES”.
6. Display will read “P-O”. (Fig C)
7. Wait until Ready light illuminates.
8. Press-and-release Brew button to initiate a brew cycle.
9. Water should stop flowing before READY light stops flashing to create a “short pot”.
10. After tank water recovers and READY light illuminates, brewer is ready to brew coffee. See Brew Procedure.
If brewer is in operation (connected to a pressurized water source) and water is shut off for four minutes, display will read “P-O” (Fig C) and
brewer can be used as a pour-over:
1. Place server under the EMPTY brew basket.
2. Wait until Ready light illuminates.
3. Press-and-release Brew button to initiate a brew cycle.
4. Water should stop flowing before READY light stops flashing to create a “short pot”.
5. After tank water recovers and READY light illuminates, brewer is ready to brew coffee. See Brew Procedure.
If water pressure problem is resolved, simply press Off then On.
Brew Procedure while brewer is in pour over “P-O” mode:
1. Wait until tank water heats up and READY light is on.
2. Place brew basket in place with ground coffee inside filter.
3. Pour a full (64oz) maximum container of fresh water into basin at top/front of brewer. (Fig D)
4. Place container under brew basket.
5. Press-and-release “BREW” button to initiate brew cycle.
COUNTER:
The brewer is equipped with a counter that displays the total number of brew cycles for each dispense head. After turning the brewer on, the
number will scroll across the display two times and then clears.
CLEANING CABINET
• The outside of the brewer can be cleaned with a damp cloth, a household dusting spray or a stainless steel cleaner. Do not use an
abrasive such as Scotchbrite or Brillo pads. These may mar the finish.
• Wipe the underside of the cabinet hood with a clean cloth. Be especially careful when using soap or detergent around the sprayhead.
Any soap left on the deflector may impart an unpleasant taste to the first brews.
CLEANING WARMERS
The warmer plates are easy to clean and will maintain its appearance longer if cleaned regularly. Coffee stains can be wiped off with a damp
cloth. Use detergent or sanitizer for heavy deposits, but refrain from using abrasives.
CLEANING BREW BASKET, AIRPOTS AND DECANTERS
Use commercial grade urn cleaner (as directed by manufacturer) and rinse thoroughly.
Figure C
Figure D
B-SERIES Page 5
Programming for B-Series
Page 6 B-SERIES
Models B-3, B-3WR, B-3WL, B-SAP & B-ID Parts List
A12124
Spray Head
Deflector Kit
A531-072
Relay,
Heater
A554-109
Transformer
30VA, 24V ct
A71934
Controller Kit
A61467
Switch,
120 or 240 Heater
(Dual volt models only)
A71683
24V Inlet Valve
A71619
Brew Basket
Assembly
(not shown)
A13029
Warmer
Heater
(not shown)
Model B-3 Dual Voltage Unit Shown
A71577
Warmer Plate
(not shown)
A71431
Gourmet Brew Basket Assy
(optional for B-SAP)
(not shown)
B-SERIES Page 7
Models B-3, B-3WR, B-3WL, B-SAP & B-ID Parts List
Dual Voltage Unit Shown
A71562
Element,
240V/3500W
A62305
Thermostat,
Hi-Limit
A71567
Thermistor
A544-008
Grommet,
Probe (3)
A71684
24V Dump
Valve
A61243
Grommet,
Dump Valve
A71933
Touch Pad
w/Cable
(in Controller
Kit A71934)
A71561
Element,
120V/1500W
A71681
Gasket,
Tank
A71570
Decal
T-Pad,
B-3, B-3WR,
B-3WL
A71699
Decal
T-Pad,
B-SAP
B-ID
A12124
Spray Head
Deflector Kit
Page 8 B-SERIES
Models B-6, B-DGP & B-DAP Parts List
A71822
Decal,
T-pad
B-6
A71823
Decal,
T-pad,
B-DAP,
B-DGP
A548-128
Deflector Spray
Head (2)
A61481
Transformer (2)
40VA, 24VCT
A71934
Controller Kit (2)
A71619
Brew Basket Assy. (not shown) (2)
A13029
Warmer Heater (not shown)
A71577
Warmer Plate (not shown)
A71431
Gourmet Brew Basket Assy (optional for B-DAP, B-DGP) (not shown)
A71683
Valve, Inlet
A531-072
Relay,
Heater
Model B-6 Shown
B-SERIES Page 9
Models B-6, B-DGP & B-DAP Parts List
A62305
Thermostat
Hi-Limit
A71936
Element,
240V/6000W
A71562
Element,
240V/3500W
A71508
Heat Sensor
Probe
A61108
Level
Probe
A71567
Thermistor
A71147
Grommet
Probe (4)
A61243
Grommet
Dump Valve
A71684
Valve
Dump
Touch Pad w/
Cable (2)
(in Controller Kit - pn A71934)
A548-127
Nozzle, Spray
Head (2)
A71567
Thermistor
A515027
Contactor for
30A Models
A61243
Grommet
Dump Valve
A71684
Valve
Dump
Page 10 B-SERIES
TROUBLESHOOTING GUIDE
Weak coffee
Strong coffee
Bitter coffee
Grounds in coffee
Brew basket overflowed
Unpleasant taste
Quantity of coffee dispensed
each throw is not the same
Circuit breaker trips
continuously
Control board displays “P-O”
Control board displays “ER2”
Water boiling (or steaming)
No lights are on
(including warmer lights)
Too much or not enough water in server
Spray head dripping
Hot water spigot dripping
Hot water spigot not dispensing
Warmer failure
Water solenoids not working
One indicator light will not illuminate
• Set to portion more coffee
• Readjust to finer grind
• Check spray temp; should be greater than
185°F/85°C
• Spray deflector broken or missing. Replace
• Use less coffee
• Use a coarser grind
• Use proper filter
• Position filter carefully
• Use no more than 3 1/2 oz. (100 grams) of
coffee
• Use a coarser grind
• You must dump old coffee and use fresh
new filter for each brew
• Clean, sanitize (delime)
• Delime machine
• Check hoses
• Turn screw on Dump Valve to open fully
• Check the length of time brewer runs
with watch
• Plug unit directly into outlet. Do not use
extension cord
• Designate single line for unit. Do not
use multi-outlet box
• Turn water supply on, then reset power
• Clean or replace water fill valve
• Replace if defective
• Check settings with actual temperature
• Check power at source
• Turn switch on
• Reconnect touchpad
• Readjust
• Delime unit
• Replace seal
• Delime tank
• Replace seat
• Check power source
• Replace fuse
• Replace defective heater
• Replace fuse
• Replace touchpad
• Not enough coffee used
• Grind is too coarse
• Water not hot enough
• Coffee bed has dry areas
• Too much coffee used
• Grind is too fine
• Paper filter collapsed during brewing
• Too much coffee
• Grind is too fine
• Double batching
• Water tank or brew basket needs cleaning
• Lime scale build-up
• Hose kinked
• Dump Valve not adjusted properly
• Defective timer
• Insufficient current due to
use of extension cord
• Insufficient current due to
overloaded line
• Water supply turned off
• Water fill valve on too long
• Problem with thermistor
• Temperature set too high
• Defective thermistor
• No power to brewer
• Power switch turned off
• Touch pad disconnected
• Water volume adjustment
• Lime build up in dump valve
• Faulty seal
• Tube limed up
• Defective valve seat
• Loss of power
• Bus fuse (5 Amp) on controller board is blown
• Defective warmer heater
• Bus fuse (1 Amp) on controller board is blown
• LED burned out
If you still need help, call an authorized dealer in your area or our Technical Service Department. You can reach Grindmaster Corporation’s Technical
Service Department at 800-695-4500 (USA & Canada only) or 502-425-4776 Monday-Friday, 8:00 AM - 6:00 PM EST. Please have the model and serial
number ready so that accurate information can be given.
Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.
Problem
Possible Cause
Solution
Grindmaster® Coffee Grinders and Brewers • PrecisionBrew™ Brewing Systems • Espressimo® Espresso Machines
Crathco® Hot Beverage Dispensers • Crathco® Cold and Frozen Beverage Dispensers • AMW Coffee and Tea Systems
Tel (502) 425-4776 • Fax (502) 425-4664 • 1-800-695-4500 (USA & Canada only)
P.O. Box 35020 • Louisville, KY 40232 • USA
www.grindmaster.com • email: info@grindmaster.com
© Grindmaster Corporation, 1999
PRINTED IN USA
0608 Form # AM-375-07
Part # 71580
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