Grindmaster AM-344-04 Guide

Shuttle®Brewer & Airpot/Shuttle®Brewers
Operation and Instruction Manual
For Models PB-330, PB-430, PBVSA-330, PBVSA-430, PBIC-330, PBIC-430,
PB330E 230V, PB-430E 230V, PBVSA-330E 230V,
PBVSA-430E 230V, PBIC-330E 230V, PBIC-430E 230V
Table of Contents
Warning Labels . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation and Start-up . . . . . . . . . . . . . . . . . . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Precision Brew® Control Board . . . . . . . . . . . .15
Troubleshooting
Error Messages . . . . . . . . . . . . . . . . . . . . . 17
Filling Problems . . . . . . . . . . . . . . . . . . . . . 17
Heating Problems . . . . . . . . . . . . . . . . . . . . 19
Brewing Problems . . . . . . . . . . . . . . . . . . . . 21
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts Photos . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VS-1.5(S) Cleaning and Sanitizing . . . . . . . . . .29
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . 30
© Grindmaster Corporation, 2004
PRINTED IN U.S.A.
Grindmaster Corporation
4003 Collins Lane
Louisville, KY 40245 USA
[phone]
[phone] (USA & Canada only)
[phone] (Technical Service Only)
FAX [phone]
www.grindmaster.com
0607 Form # AM-344-04
Part # A090-840
Prior authorization must be obtained from
Grindmaster Corporation for all warranty claims.
Models PB-330/PB-330E 230V Models PBIC-430/
PBIC-430E230V
Models PBVSA-430/
PBVSA-430E 230V

Warning Labels
The following warning labels were on your dispenser when it was shipped from the factory. They should remain on your dispenser
in good, readable condition at all times. If one of your labels is missing or damaged, order a replacement label immediately.
Part # A546-445
Located on front splash panel and lid of machine.
Located on PB-330, PB-330E 230V, PB-430, and PB-430E 230V lower front decal.
Order part # A546-434 for PB-330.
Order part # A546-435 for PB-430.
Part # A546-213
Located on front splash panel.
Part # A71949
Located on brew baskets.
Shuttle Brewers & Airpot/Shuttle Brewers Page 3
CAUTION
Remove with care.
Hot liquid in brew
basket could cause
burns.
Located on PBIC-330, PBIC-330E 230V, PBIC-430, and PBIC-430E 230V above faucet.
Order part # A546-428 for PBIC-330.
Order part # A546-427 for PBIC-430.

Page 4 Shuttle Brewers & Airpot/Shuttle Brewers
Installation
WARNING
ELECTRIC SHOCK HAZARD!
Installation of this appliance should be performed by qualified service personnel only. Improper
installation could result in electrocution.
Set-Up/Position
1) Remove the brewer from the packing material and attach its legs.
2) Position the brewer on a strong, stable table or counter. Check the level front to back and side to side. Adjust the
legs to the correct level.
IMPORTANT:
THE PERSON INSTALLING THIS APPLIANCE IS RESPONSIBLE FOR ENSURING THAT ELECTRIC AND WATER
CONNECTIONS MEET THE REQUIREMENTS OF THE NATIONAL ELECTRIC CODE, NATIONAL PLUMBING
CODE, AND ANY LOCAL ORDINANCES.
The electric and water hook-up locations are behind the front panel. Remove the four screws fastening this panel for
access to these connections.
Water Hook-up
1) The water line may enter through holes on the rear or the bottom of the brewer. Use the right hand opening for water.
2) Use 3/8” copper or flexible water line to prevent strain. Do not use low temperature plastic tubing. The connection
to the fill valve is 3/8” flare.
3) Water line pressure must be from 30 to 80 psi (207-2 KPA).
4) Hot (up to 160°F/71°C) or cold water may be used. Hot water offers faster recovery between brews.
5) Install a shut-off valve near the brewer.
6) Installing a filtering system can improve the taste of brewed coffee and extend the life of the brewer. If your water
has high calcium (lime), chlorine, or iron content, this is especially important. The filter should be the lime inhibiting
type if cold water is used.
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Shuttle Brewers & Airpot/Shuttle Brewers Page 5
Installation (cont.)
Electric Hook-up
The brewer is designed to operate at the specified voltage on the nameplate with a tolerance of ± 10% for voltage
deviation. It is very important that the power line to the brewer be checked to make sure that the voltage is within
10% of the brewer’s rated voltage. Failure to provide adequate voltage, as defined above, will cause problems
with your brewer. If the power is too low, the solenoid valves may or may not work or longer recovery time will be
experienced. The brewer may be permanently damaged if the voltage is too high.
1) The electric ratings for your brewer are printed on its nameplate.
2) The brewer should be connected to its own circuit with a fused disconnect switch or a circuit breaker near the brewer.
Important: For CE units, means shall be provided to endure all pole disconnection from the supply. Such means shall be
one of the following: a supply cord fitted with plug, or a switch that is directly connected to the supply terminals and has a
contact separation of at least 3mm in each pole.
3) Attach the appropriately sized cord to the brewer with a cord grip for the 1 1/2” (3.8 cm) electric input opening.
The cord may enter through the rear or bottom on the left side of the brewer. Use an oil resistant cord such as
type SO, SOO, SAO, STOO, SEO, SJO, SJOO, SJTO, SJTOO, SJEO, HSO, HSOO, HSJO, or HSJOO.
Alternatively, flexible conduit and type THHN wires may be used. Use only copper conductors.
4) Standard connection is 1 phase 3 wire. Connect the two lines to L1 and L2 on the terminal block. If the brewer is
wired for three phase, a lug, L3, is provided on the terminal block. A neutral line must be connected to the N terminal.
Note: PB-xxxE 230V models are 1 phase, 2 wire or 3 phase, 3 wire and do not require a neutral.
5) The body of the brewer must be grounded. A ground lug is provided for this purpose.
Note: If supply cord is damaged, it must be replaced by a special cord or assembly from the manufacturer, ot it’s
service agent.
Note: This appliance is IP10 rated, and shall not be cleaned with a water jet.
WARNING
Never use the ground conductor as a neutral. This could cause electrocution.
Start-up
1) Flip power supply to machine “ON” at the branch supply disconnect and allow the water tank to fill. The machine
will make a subtle hissing sound while filling.
2) Once the brewer is full, it will take 15 to 35 minutes to heat. The ready lights will turn on when up to temperature.
3) Insert the brew baskets and place a Shuttle or airpot under the baskets. Brew at least one batch from each side.
Check the level in the container to be sure the brew volume is correct. Remember that when using coffee, the
level will be lower. Do this for all batch sizes. The water must be hot to check the levels. If adjustments are needed,
see the adjustments section of this manual.
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Attention: A watchdog circuit also monitors the water level in the tank and will disable the machine
if the water level in the tank is not normal within (6) minutes of fill time. The machine will require
power to be reset to clear the watchdog timeout and “ER-1” message will appear.

Page 6 Shuttle Brewers & Airpot/Shuttle Brewers
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Operation
CAUTION
HOT LIQUID HAZARD!
Water used for brewing coffee is very hot. Use caution when brewing, pouring, or transporting
coffee. Accidental spills may result in severe burns.
1) Place an empty, warm Shuttle on the shelf, under the brew head. Turn on the warmer if available.
2) If the Shuttle is not warm, allow the warmer to heat the Shuttle. Only a short brew of water will speed this.
A cold Shuttle will significantly lower the temperature of the brewed coffee.
3) Remove the filter basket and line with a filter paper. Paper size is 13 x 5 for the smaller basket, BB1.5, and
14 x 6 for the larger, BB2.0.
4) Place ground coffee in the filter basket. Follow corporate recommendations for amount of coffee and grind.
A full Shuttle is 1.5 gallons (5.7L). A full vacuum Shuttle is 1.6 (6.0L) gallons.
5) Slide the basket into the brewer making sure the spout lines up with the top of the Shuttle.
6) If ready lights are lit, press correct batch size button.
7) Brew spray time is about 4 minutes for a full Shuttle. After the brew, allow the coffee to drip for 1 to 2 minutes.
Ready light will flash during the entire brew spray and drip cycle. Brew basket will be locked in place until drip
cycle is finished.
CAUTION
Coffee basket contains very hot water until the drip is completed. Early removal of a dripping
basket could result in burns.
8) Dump the grounds from the basket and rinse for the next brew. Coffee is ready to serve.
9) The Shuttle may be placed on remote warming stations. Use caution when moving a full Shuttle.
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Shuttle Brewers & Airpot/Shuttle Brewers Page 7
Adjustments
All adjustments to machine are accessible through the front display(s). Refer to specifics below and the
Programming Routine section. All values are preset at the factory and may vary brewer to brewer.
Temperature Adjustment
Tank temperature can be adjusted from 170°F – 205°F (77°C – 96°C) through the front display. See Programming
Routine section for procedure.
Brew Volume “br”
Brew time can be set for each size visually. See Setting Brew Volume Procedure below.
Brew time can also be adjusted through the display. See Programming Routine section.
Setting Brew Volume Visually
1. Remove brew basket and place container under brew head.
2. Press and hold desired brew button for 5 seconds. Display will read “Pro”.
3. Within 20 seconds, press and release desired brew button. Water will dispense from spray head and time
will count-up in display.
4. When volume is at desired amount, press and release brew button to stop flow. Time will flash in display.
5. Within 20 seconds, press and release desired brew button. Display will clear and brew time will be stored
into memory.
Note: During this routine, no pulsing or bypass will occur.
Note: If the On/Off button is pressed during procedure, time setting will default to previous time.
Pulse Brewing “P-b”
Within the Programming Routine, the number of pulses, pulse-on-time, and pulse-off-time for each size brew cycle
can be set. During the pulse-off cycle, water shuts off to the coffee grounds. During this period, the grounds in the
brew basket absorb water causing the coffee bed to rise. With a larger bed of coffee in the brew basket, remaining
water from spray head has more contact area with grounds causing greater extraction of finished coffee.
Note: Adjusting pulse values will not affect the finished brew volume. The brew time, however, will be automatically
extended by the amount of total pulse OFF time.
See Brew Routine Section for examples.
Ratio “rto”
The ratio of the bypass flow rate versus the spray head flow rate is factory set. This number, however, rarely needs
to be adjusted.
To find the proper value for the ratio:
1. Within the Programming Routine, set the bypass % to the maximum number allowable.
2. Remove the brew basket.
3. Prepare two containers to measure volume from both the spray head and bypass.
4. Press “Large” brew button to begin dispensing water.
5. After a minute or two, cancel the brew cycle by pressing the “Large” brew button or pressing the On/Off button.
6. Measure the volume of both containers.
7. Divide the bypass amount by the spray head amount. This number is to be entered as the new ratio (ex. “.45”).
8. Access the settings routine and adjust to the new ratio number.
Note: If the ratio number is accurate, changing the bypass percent will not require resetting brew time.
Note: Approximate ratio numbers:
.45 for standard spray head models
.64 for gourmet spray head models

Page 8 Shuttle Brewers & Airpot/Shuttle Brewers
Adjustments (cont.)
Bypass “b-P”
Brewer contains a bypass valve to control the amount of water to bypass coffee grounds and dilute the
final brew. Bypass is available on Large and Medium brew cycles.
Within the Programming Routine, the percent of the total brew volume to be bypassed can be set.
Note: Adjusting bypass percent will not affect the finished brew volume. The brew cycle time, however, will be
automatically reduced as bypass percent increases.
Brew Routine
No Pulse Brewing or Bypass
Assumptions: “br” = 4.00, “P-b” = OFF, “b-P” = OFF
11. Press “Brew” button.
12. 0:00, Brew Valve opens and Ready Light flashes.
13. 4:00, Brew Valve closes.
14. 5:30, Ready Light stops flashing
Pulse Brewing ON, Bypass OFF
Assumptions: “br” = 4.00; “P-b” = 3, 20, 15; “b-P” = OFF
11. Press “Brew” button.
12. 0:00, Brew Valve opens and Ready Light flashes.
13. 0:20, Brew Valve closes. (Pulse #1)
14. 0:35, Brew Valve opens.
15. 0:55, Brew Valve closes. (Pulse #2)
16. 1:10, Brew Valve opens.
17. 1:30, Brew Valve closes. (Pulse #3)
18. 1:45, Brew Valve opens.
19. 4:45, Brew Valve closes.
10. 6:15, Ready Light stops flashing.
Pulse Brewing OFF, Bypass ON
Assumptions: “br” = 4.00; “P-b” = OFF; “rto” = 0.45; “b-P” = 20 (max 31)
(Software calculates: Brew valve-on-time = 192 sec and Bypass Valve-on-time = 107 sec)
11. Press “Brew” button.
12. 0:00, Brew Valve opens and Ready Light flashes.
13. 1:25, Bypass Valve opens.
14. 3:12, both valves close.
15. 4:42, Ready Light stops flashing.
Pulse Brewing and Bypass ON
Assumptions: “br” = 4.00; “P-b” = 3, 28, 18; “rto” = 0.45; “b-P” = 30 (max 31)
(Software calculates: Brew valve-on-time = 168 sec and Bypass Valve-on-time = 160 sec)
11. Press “Brew” button.
12. 0:00, Brew Valve opens and Ready Light flashes.
3. 0:08, Bypass valve opens
14. 0:28, Both valves closes. (Pulse #1)
15. 0:46, Both valves opens.
16. 1:14, Both valves closes. (Pulse #2)
17. 1:32, Both valves opens.
18. 2:00, Both valves close. (Pulse #3)
19. 2:18, Both valves open.
10. 3:42, Both valves close.
11. 5:06, Ready light stops flashing.

Shuttle Brewers & Airpot/Shuttle Brewers Page 9
Programming
(All values are preset at the factory and may vary brewer to brewer.)
Settings Routine
Programming For All Brewer Settings and Large Portion (refer to Table 1)
11. Press and hold both “up” and “down” arrows for 5 seconds.
12. All three “brew” lights will flash.
13. Press “Large Brew” button.
Only “Large” ready light illuminates during remaining steps.
14. Display will indicate either “d F” or “d C” (Fahrenheit or Celsius). Default is “d F”.
15. Press “up” or “down” arrow to change from one to another.
16. Press “Large Brew” button to accept and go to next setting.
17. Display will read temp value in the selected scale (170°F-205°F). Default is “200”.
18. Press “up” or “down” arrow to change value. (1° increments)
19. Press “Large Brew” button to accept and go to next setting.
10. Display will read “Br”. (Brew Time)
11. Press “Large Brew” button to go to next setting.
12. Display will read set brew time in minutes and seconds (0.01-6.00). Default is “4.00”.
13. Press “up” or “down” arrow to change value (1 second increments). (Approximately 0.8 oz./second.)
14. Press “Large Brew” button to accept and go to next setting.
15. Display will read “P-b”. (Pulse Brewing)
16. Press “Large Brew” button to accept and go to next setting.
17. Display will read “OFF” or “1” – “6” (number of pulses). Default is “1”.
18. Press “up” or “down” arrow to change value. (increments of 1)
19. Press “Large Brew” button to accept and go to next setting.
Note: If “OFF” is selected, skip pulse timing steps to #26.
20. Display will read “0.05” – “0.60” (pulse ON time for each pulse). Default is “0.40”.
21. Press “up” or “down” arrow to change value. (increments of one second)
22. Press “Large Brew” button to accept and go to next setting.
23. Display will read “0.05” – “0.60” (pulse OFF time for each pulse). Default is “0.40”.
24. Press “up” or “down” arrow to change value. (increments of one second)
25. Press “Large Brew” button to accept and go to next setting.
26. Display will read “rto” (bypass flow rate/spray head flow rate).
27. Press “Large Brew” button to go to next setting.
28. Display will read “0.20 – “1.25” (bypass rate/spray rate). Value is set at factory. If standard spray head, use “0.45,
if gourmet or sealed use “0.64”.
29. Press “up” or “down” arrow to change value. (increments of 0.01)
30. Press “Large Brew” button to accept and go to next setting.
31. Display will read “b-P” (percent of brew volume to be bypassed).
32. Press “Large Brew” button to go to next setting.
33. Display will read “OFF” or “1” – “33” (bypass %). Default is 25.
34. Press “up” or “down” arrow to change value. (increments of one percent)
35. Press “Large Brew” button to accept and go to next setting.
36. Display will read “Ltn” (Low-Temp/No Brew).
37. Press “Large Brew” button to go to next setting.
38. Display will read “On” or “Off”. Default is “Off”.
39. Press “up” or “down” arrow to change value.
40. Press “Large Brew” button to accept and clear display.

Page 10 Shuttle Brewers & Airpot/Shuttle Brewers
Programming For All Brewer Settings and Large Portion (cont.)
Table 1
ADJUST
OR
TO
LOW-TEMP/NO-BREW
NO-BREW
LOW-TEMP/
BYPASS RATIO
ADVANCE
)
BYPASS % (OFF, 1-33)
BYPASS RATIO (0.20-1.25)
BYPASS
(MAX CHANGE DEPENDING ON RATIO
# of seconds shown
PULSE ON TIME (0:05-0:60)
# of seconds shown
(OFF, 1 - 6)
# OF PULSES
OR
OR
TANK TEMP (170-205F)
PULSE OFF TIME (0:05-0:60)
4 minutes, 10 seconds shown
PULSE BREW
BREW TIME
READING
TEMP SCALE
DISPLAY
BREW TIME (0:01-6:00)
0.45 for Standard Spray Head, 0.64 for Gourmet Spray Head
1. PRESS-AND-HOLD UP & DOWN ARROWS FOR 5 SECONDS.
2. READY LIGHTS WILL FLASH.
3. PRESS BREW BUTTON FOR LARGE "L".
4. LARGE READY LIGHT FLASHES THROUGHOUT ROUTINE.
5. DISPLAY WILL READ AS FOLLOWS:

Shuttle Brewers & Airpot/Shuttle Brewers Page 11
Programming (cont.)
Settings Routine
Programming For Medium: Brew Time, Pulse Brewing & Bypass (refer to Table 2)
11. Press and hold both “up” and “down” arrows for 5 seconds.
12. All three brew lights will flash.
13. Press “Medium Brew” button.
Only “Medium” ready light illuminates during remaining steps.
14. Display will read “Br” (Brew Time).
15. Press “Medium Brew” button to go to next setting.
16. Display will read set brew time in minutes and seconds (0.01-6.00). Default is “2.40”.
17. Press “up” or “down” arrow to change value. (1 second increments)
18. Press “Medium Brew” button to accept and go to next setting.
19. Display will read “P-b” (Pulse Brewing).
10. Press “Medium Brew” button to accept and go to next setting.
11. Display will read “Off” or “1” – “6” (number of pulses). Default is 2.
12. Press “up” or “down” arrow to change value (1 second increments). (Approximately 0.8 oz./second.)
13. Press “Medium Brew” button to accept and go to next setting.
Note: If “Off” is selected, skip pulse timing steps.
14. Display will read “0.05” – “0.60” (pulse ON time for each pulse). Default is “0.30”.
15. Press “up” or “down” arrow to change value. (increments of 1 second)
16. Press “Medium Brew” button to accept and go to next setting.
17. Display will read “0.05” – “0.60” (pulse OFF time for each pulse). Default is “0.30”.
18. Press “up” or “down” arrow to change value. (increments of 1 second)
19. Press “Medium Brew” button to accept and go to next setting.
20. Display will read “b-P” (percent of brew volume to be bypassed).
21. Press “Medium Brew” button to go to next setting.
22. Display will read “Off” or “1” – “33” (bypass %). Default is “OFF”.
23. Press “up” or “down” arrow to change value. (increments of 1 percent)
24. Press “Medium Brew” button to accept and clear display.
Table 2
(OFF, 1 - 6) TO
BYPASS
ADVANCE
PULSE BREW
ADJUST
BREW TIME
READING
# OF PULSES
BYPASS % (OFF, 1-33)
DISPLAY
(MAX MAY CHANGE DEPENDING ON RATIO)
1. PRESS-AND-HOLD UP & DOWN ARROWS FOR 5 SECONDS.
2. READY LIGHTS WILL FLASH.
3. PRESS BREW BUTTON FOR MEDIUM "M".
4. MEDIUM READY LIGHT FLASHES THROUGHOUT ROUTINE.
5. DISPLAY WILL READ AS FOLLOWS:
BREW TIME (0:01-6:00)
2 minutes, 40 seconds shown
PULSE OFF TIME (0:05-0:60)
# of seconds shown
PULSE ON TIME (0:05-0:60)
# of seconds shown

Page 12 Shuttle Brewers & Airpot/Shuttle Brewers
Programming (cont.)
Settings Routine
Programming For Small: Brew Time & Pulse Brewing (refer to Table 3)
11. Press and hold both “up” and “down” arrows for 5 seconds.
12. All three “brew” lights will flash.
13. Press “Small Brew” button.
Only “Small” ready light illuminates during remaining steps.
14. Display will read “Br” (Brew Time).
15. Press “Small Brew” button to go to next setting.
16. Display will read set brew time in minutes and seconds (0.01-6.00). Default is “1.20”.
17. Press “up” or “down” arrow to change value (1 second increments). (Approximately 0.8 oz./second.)
18. Press “Small Brew” button to accept and go to next setting.
19. Display will read “P-b” (Pulse Brewing).
10. Press “Small Brew” button to accept and go to next setting.
11. Display will read “Off” or “1” – “6” (number of pulses). Default is 4.
12. Press “up” or “down” arrow to change value. (increments of 1)
13. Press “Small Brew” button to accept and go to next setting.
Note: If “Off” is selected, skip pulse timing steps.
14. Display will read “0.05” – “0.60” (pulse ON time for each pulse). Default is “0.20”.
15. Press “up” or “down” arrow to change value. (increments of 1 second)
16. Press “Small Brew” button to accept and go to next setting.
17. Display will read “0.05” – “0.60” (pulse OFF time for each pulse). Default is “0.20”.
18. Press “up” or “down” arrow to change value. (increments of 1 second)
19. Press “Small Brew” button to accept and clear display.
* During programming routine, all other brew buttons are disabled.r brew buttons are disabled.
* If ON/OFF button is pressed during programming routine, brew defaults to previous settings.
Table 3
BREW TIME
# OF PULSES
(OFF, 1 - 6)
PULSE BREW
TO
ADVANCEREADING ADJUST
DISPLAY
3. PRESS BREW BUTTON FOR SMALL "S".
1. PRESS-AND-HOLD UP & DOWN ARROWS FOR 5 SECONDS.
5. DISPLAY WILL READ AS FOLLOWS:
2. READY LIGHTS WILL FLASH.
4. SMALL READY LIGHT FLASHES THROUGHOUT ROUTINE.
BREW TIME (0:01-6:00)
1 minute, 20 seconds shown
PULSE ON TIME (0:05-0:60)
# of seconds shown
PULSE OFF TIME (0:05-0:60)
# of seconds shown

Shuttle Brewers & Airpot/Shuttle Brewers Page 13
Cleaning
WARNING
Burn Hazard!
Hot liquids and surfaces are present in this equipment. To avoid burns use caution when cleaning.
Rinse hot parts with cold water before cleaning. Use gloves or a heavy cloth when removing hot
parts from brewer.
After Each Brew:
1) Dispose of grounds and rinse brew basket.
2) Rinse Shuttle or airpot containers before reuse.
Every Day:
1) Wash brew basket with warm soapy water. The wire basket is removable to aid cleaning.
2) Remove spray head(s), located above brew basket(s), using gloves or a heavy towel. Wash off coffee oils
and clean any plugged holes.
3) Clean Shuttles with warm soapy water and a brush or towel.
4) Use only a soft cloth and warm soapy water or stainless steel polish on the outside to avoid scratches.
5) Wipe exterior of brewer with a damp cloth. Do not use abrasives which will scratch surface.
6) If Shuttles are to be left on warmer all night, fill with water to avoid coffee oil burn-in.
Weekly or Bi-Weekly, Depending on Use
11) Fill Shuttles with one gallon, 2/3 full, of hot water.
12) Pour into the Shuttle liners the recommended concentration of urn cleaner (excessive amounts of cleaner will
attack the stainless steel).
Urn cleaners that have been used successfully:
DIP-IT TABZ™ Super Concentrate
manufactured by Reckitt Benckiser, Inc. manufactured by Urnex Brands, Inc.
1655 Valley Road 170 Ludlow Street
Wayne, NJ 07474 Yonkers, NY 10705
[phone] or [phone] [phone] or [phone]
13) Scrub the liner interior with a plastic bristle brush.
14) Remove the knurled nut at the top of the gauge glass and clean the glass with a small bottle brush.
15) Pour out the contents of the Shuttle.
16) Remove the handle assembly of the Shuttle faucet by unscrewing the plastic bonnet.
17) Gently wash the faucet seat cup with a soft cloth and warm soapy water.
18) Wash the faucet shank with a bottle brush.
19) Soak airpot pick-up tube assembly in hot soapy water. Urn cleaner may be used for stronger cleaning.1
10) Clean the warmer and bottom of Shuttle surfaces. These surfaces must be clean for proper heat transfer.
11) Polish the exterior of the brewer with stainless steel cleaner. Use the appropriate cleaner for brass, copper,
or vinyl if these optional finishes are provided.
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Page 14 Shuttle Brewers & Airpot/Shuttle Brewers
Service
The rest of this manual contains information to aid the service person who is working on this equipment. This page
has information on performing common service tasks. Following this is the Troubleshooting section which can help
diagnose problems which are divided into three basic systems: filling, heating, and brewing.
Next is an illustrated parts breakdown which will help in the selection of repair parts. If further assistance is needed,
call our Technical Service Department at 800-695-4500 (USA & Canada only) or [phone] Monday – Friday
between 8:00 am and 6:00 pm Eastern time.
Wiring diagrams are also provided. Locate the basic diagram for the model you are working with. If there are any
options, see Diagram #091-548 (page 31 of this manual) which shows the wiring alterations for options.
Drain Water Tank
Always empty the tank before shipping.
WARNING
Draining of tank should be performed by a qualified service technician. The tank contains very hot
water. May cause severe burns.
Note: Brewer may contain over 5 gallons (19.0L) of hot water.
1) Prepare a heat resistant container to drain tank water into.
2) Disconnect power to the brewer.
3) Remove the front access panel.
4) Pinch or clamp the silicone hose connected to fill valve.
5) Disconnect hose from outlet barb on fill valve.
6) Place hose over drain and release clamp.
7) Allow the tank to drain completely.
NOTE: It may be necessary to pinch the hose and stop the water before container is full. Carefully reinstall hose
over fill valve outlet, then empty container. Repeat steps 4-7 completely to drain tank.
Remove Brew Valve
1) Disconnect power to machine.
2) Remove top cover and remove wires and small tube from valve.
3) Tilt inlet of valve down and pull sideways out of spray tee.
4) Clamp rubber tubing and disconnect valve from tubing.
Remove Heater
1) Disconnect power and remove top cover of brewer.
2) Disconnect wire leads to heater.
3) Remove tank cover by loosening retaining screw(s). Cover is lifted up with heater attached. Heater is then
removed.
4) Replace heater with sealing washers in same configuration. When tightening nuts, hold element so it does
not twist.
5) Replace tank cover ensuring gasket seal is good.
6) Replace heater wires. Be sure all electrical connections are secure.


Shuttle Brewers & Airpot/Shuttle Brewers Page 15
Special Control Functions
User Lockout
User Lockout is achieved via the position of the LOCK jumper on the board header. Locate the header on the board
(shown below) and place the jumper in the desired position. In the Locked position all menus in this document are
locked out, and the unit will only allow brewing functions. There are two versions of the header, 10 pin and 2 pin.
Both configurations are shown below.
10 Pin Version
LOCK
UNLOCKED
LOCK
LOCKED
LOCK
2 Pin Version
UNLOCKED
LOCK
LOCKED
System Restore Function
This function will restore a Precision Brew® unit to its original factory settings. To activate system restore, power on
the unit while holding in the DOWN button on the keypad (use the keypad that controls the RIGHT side for a double
unit).
Continue holding the DOWN button and the display will scroll “rEStorE” to indicate that a system restore is about to
happen. If the DOWN button is released at this point, the restore is cancelled. If the button hold is continued, the
display will scroll “donE” to show completion of a system restore.
Upon a successful restore, the original factory settings will override all changes. The brew counters are not affected.
Factory Specific Features
The following sections describe features that are not intended to be used by the end user. These features, instead,
are intended to help Grindmaster set up and test the machine.
Factory/Field Test Menu
This menu is intended to check product functionality both at the end of the factory line and in the field. The con-
trol must be completely OFF (both sides) to enter field test. This mode is entered by pressing and holding the UP
key and the LARGE BREW key on the keypad (use the keypad that controls the RIGHT side for a double unit)
for 6 seconds. Once the menu is entered, the unit will start with an LED test that lights all LEDs and segments
on the display.
Proceeding through the field test is done by pressing the ON/OFF key (RIGHT side if a double unit). Each time
this button is pressed, the test will advance to the next step. For the output test, use the UP and DOWN keys to
select the desired output.
Refer to the table on the following page for operation. Field Test Mode exits after stepping through all modes
only- there is not a timeout.
1
1

Page 16 Shuttle Brewers & Airpot/Shuttle Brewers
Factory/Field Test Menu (cont.)
Step Function Operation Description
1LED Test All LEDs ON Verify that all LEDs turn on.
2Firmware Version Display firmware version Shows the software version of the control.
3Date Code Not used Not used
4EEPROM Version Not used Not used
5Non Resetable Unit
Counter
Scroll non-resetable unit counter Shows the total number of brews made by
the brewer (both sides if a double unit)
6Display Water
Temperature
Show averaged A/D reading of temperature Shows the current temperature in °F of the
thermister.
7Display Water Level 1 Show averaged A/D reading of water level 1 If > 500 water level is full,
If < 500 water level is not full.
8Display Water Level 2 Show averaged A/D reading of water level 2 If > 500 water is at the heater level,
If < 500 water level not at the heater level.
9Show Input Display scrolls “InPut”Input Test Mode
10 Input Test Press each key and the display will show a
number related to that key
Right Side
On/Off - 1 (advances test)
Up - 5
Down - 3
Large Brew - 4
Medium Brew - 2
Small Brew - 0
Basket Switch - 17
Left Side
On/Off - 9
Up - 13
Down - 11
Large Brew - 12
Medium Brew - 10
Small Brew - 8
Basket Switch - 16
11 Show Output Display scrolls “outPut”Output Test Mode
12 Output Test Turns on each relay separately. Displays
“O##“ where:
## = 2 digit output number
IMPORTANT: Each output will be turned
ON when its number is on the display
REGARDLESS of temperature or fill
level. Be CAREFUL not to overfill the
tank and keep electric items out of the
way of the brew channel.
Scroll through relay outputs with the UP
and DOWN keys.
Outputs are as follows:
O01 - Fill Valve
O02 - Right Bypass Valve
O03 - Left Bypass Valve
O04 - Right Brew Valve
O05 - Left Brew Valve
O06 - not used
O07 - not used
O08 - Right Basket Lock
O09 - Left Basket Lock
O10 - Tank Heater

Shuttle Brewers & Airpot/Shuttle Brewers Page 17
Troubleshooting
The following pages are provided to help determine the cause of problems with operation of the brewers and to
indicate the appropriate solution for the problems. For each problem, the possible causes should be checked in
the order shown until the exact nature of the problem is determined.
The following procedures must be performed by a qualified service technician. Disconnect power to
machine before servicing.
Error Messages
Problem Possible Causes Service Check Remedy
ER1 • Fill valve on for over
6 min. (This occurs
during initial fill on some
units – see Initial
Start-up.)
• Check system for
water leaks.
• Correct any leaks and reset
controller.
ER2 • Thermistor failure or
loose connections in
thermistor circuit.
• Ensure that connector
is securely attached to
controller and that
thermistor is securely
connected.
• Secure connections and reset
controller. If error reoccurs,
replace thermistor.
ER3 • Thermistor is reading
out of range.
• Check tank
temperature.
• Replace thermistor.
ER4 • No heat is detected • See Heating Problems • See Heating Problems
Filling Problems
Problem Possible Causes Service Check Remedy
Overfilling water
tank when power
is Off
• Fill valve not sealing
properly.
• Check to see if water
enters tank continuously
(usually at a slow rate).
• Disassemble valve and clean
out debris. Valve may need to
be replaced.
Overfilling water
tank only when
power is On
• High electrode coated
with lime or faulty.
• Connection from
control board to tank
body faulty.
• Control board is faulty.
• Disconnect electrode
wire at quick connect
(brown wire). Connect a
wire from the quick con-
nect to the cabinet body.
If filling stops, this is the
error cause.
• Check to ensure
connection (red
wire) is secure.
• Secure connection from
control board to metal
enclosure does not
stop filling.
• Remove electrode assembly
and clean the probes. If
problem is not corrected,
replace electrode assembly.
• Make connection to tank
secure.
• Replace control board.

Page 18 Shuttle Brewers & Airpot/Shuttle Brewers
Troubleshooting (cont.)
Filling Problems
Problem Possible Causes Service Check Remedy
Tank does not refill • No electrical power to
equipment
• No water supplied to
equipment
• No power to control
board
• No power to control
board and transformer
not powered.
• No power to control
board and transformer
powered.
• Check for proper
voltage at terminal
block. Check circuit
breaker on supply circuit.
• Disconnect water supply
line and ensure that
water is provided to unit.
Check to see that any
and all valves in water
line are open.
• Check for proper voltage
across transformer
primary terminals by
disconnecting terminals.
See wiring diagram for
more information.
• Ensure there is proper
voltage across terminal
block. Check wiring
diagram for more
information.
• Disconnect quick
disconnect on secondary
side of transformer at
quick disconnect
between yellow and blue
wires. Check for 24 Vac
between blue and
yellow wires.
• Establish electrical power
to unit.
• Establish water supply
to unit.
• If there is not 120V across
primary, proceed to step
entitled “No power to control
board and transformer not
powered.” If there is proper
voltage across primary, proceed
to step entitled “No power
to control board and
transformer powered”.
• Secure connections and reset
circuit breaker on equipment.
• If there is not 24 Vac between
the blue and yellow wires,
replace transformer. If proper
voltage exists, secure
connection between 3 pin
connector and control board.

Shuttle Brewers & Airpot/Shuttle Brewers Page 19
Troubleshooting (cont.)
Filling Problems
Problem Possible Causes Service Check Remedy
Tank does not refill • Fill valve or control
board is faulty
• Check to ensure proper
connection between
6 pin connector and con-
trol board. Check
for proper connections
at fill valve terminals.
Drain 1 gal. (3.8L) of
water from hot water
faucet. Check for 24 Vac
across fill valve
terminals.
• If 6 pin connector is securely
attached to control board and
all connections are secure
and there is 24 Vac across
fill valve terminals, replace
fill valve.
Heating Problems
Problem Possible Causes Service Check Remedy
Tank does not heat • No electrical power to
equipment
• No power to control
board
• Check for proper voltage
at terminal block. Check
circuit breaker on supply
circuit.
• Check for proper voltage
across transformer
primary terminals by
disconnecting terminals.
See wiring diagram for
more information.
• Establish electrical power
to unit.
• If there is not proper voltage
across primary, proceed to step
entitled “No power to control
board and transformer not
powered”. If there is proper
voltage across primary, proceed
to step entitled “No power
to control board and
transformer powered”.

Page 20 Shuttle Brewers & Airpot/Shuttle Brewers
Troubleshooting (cont.)
Heating Problems
Problem Possible Causes Service Check Remedy
Tank does not heat • Low (long) electrode
coated with lime or
faulty.
• Connection from
control board to tank
body faulty.
• Connections from
control board to heater
relay faulty.
• Line voltage connections
to heater relay faulty.
• Connections to
remainder of heater
circuit faulty.
• Heater relay faulty.
• Thermal cut-out tripped
or faulty.
• Disconnect electrode
wire at quick connect
(purple wire). Connect a
wire from the quick con-
nect to the cabinet body.
If heating begins, this is
the error cause.
• Check to ensure
connection (green wire)
is secure.
• Check to ensure
connections (gray and
blue wires) are secure.
• Check to ensure
connections (black and
brown wires) are secure.
• Check to ensure
connections from relay
to thermal cut-out and
from thermal cut-out to
contactor and from
contactor to proper ter-
minal of terminal block
are secure. See wiring
diagram for more info-
mation.
• Ensure that coil on
heater relay is energized
by ensuring that there is
24 VDC between the
gray and blue wires
attached to the relay.
Remove the black and
brown wires from the
relay and check for an
open circuit across the
connection tabs (COM
and NO) to which the
wires were attached.
• Check for open circuit
on thermal cut-out.
(NOTE: Tripping of
thermal cut-out can
indicate presence of
another problem with
the unit. Unit should
be monitored)
• Remove electrode assembly
and clean the probes. If
problem is not corrected,
replace electrode assembly.
• Make connection to
tank secure.
• Make connections to
relay secure.
• Make connections to
relay secure.
• Make connections secure.
• If the relay coil is energized
and there is an open circuit
across the connection tabs,
replace relay.
• Replace thermal
cut-out.