Grindmaster RAPS 430 User Manual

OPERATIONS MANUAL  
ICB-400, ICB-300, P-430,  
P-330, RAP-430, RAP-330,  
RAPS-430, RAPS-330  
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 AND POSITIONING OF BREWER  
• Remove the brewer from packaging material and attach legs.  
• Position the brewer on a strong, stable table or counter. Check the level front to back and side to side. Adjust legs as necessary to level  
the unit.  
WATER AND ELECTRICAL CONNECTIONS  
IMPORTANT:THE PERSON INSTALLING THIS APPLIANCE IS RESPONSIBLE FOR ENSURING THAT ELECTRIC AND WATER  
CONNECTIONS MEET THE REQUIREMENTS OF THE NATIONAL ELECTRICAL CODE, NATIONAL PLUMBING CODE AND ANY LOCAL  
ORDINANCES.  
The water and electrical connection locations are behind the front panel on the right side of the brewer. Remove the screws fastening this panel  
to the unit to access these connections.  
WATER HOOK-UP  
• The water line may enter the brewer through holes in the bottom or rear of the brewer.  
• Use 3/8” copper tubing or flexible water line to prevent strain. Do not use low temperature plastic tubing. The connection to the fill valve  
is 3/8” flare.  
• Water line pressure should be between 30 and 70 psi.  
• Hot (up to 160°F) or cold water may be supplied to the unit. Hotter water will allow faster recovery between brews.  
ELECTRICAL POWER SUPPLY HOOK-UP  
• The electric ratings for this brewer are printed on the nameplate attached to the unit. Always see the name plate for rating information for  
the particular brewer.  
• The brewer should be connected to its own dedicated circuit with a fused disconnect switch or circuit breaker near the brewer.  
• Attach the appropriately sized cord to the brewer with a cord grip for the 1-1/8” electric input opening in either the rear or bottom of the  
unit. 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.  
• Standard units are single element units and are wired internally for single phase, 3 wire service. Connect the neutral line to the N terminal  
of the terminal block and the 2 conductors to L1 and L2 of the terminal block. 3 element units may be connected to single or 3-phase  
service. 3 element, single-phase units should be connected as described above. For 3 element units intended to operate with a 3 phase  
power supply, connect the third phase conductor to L3 of the terminal block.  
• The body of the brewer must be grounded. Connect the ground conductor to the ground lug located near the terminal block.  
WARNING: ELECTRIC SHOCK HAZARD! Never use the ground conductor as a neutral. This could cause  
electrocution.  
INITIAL START-UP  
• Turn on the water supply to the brewer. Check for leaks at the supply line to fill valve connection. Remove the controller cover panel.  
• Turn on the electrical power. The brewer will begin to fill. Units that require more than 5 min. to fill will display an error message “ER1” on  
the controller after 5 min. of filling. Press the SELECT button on the controller for 10 sec. to reset the unit and continue filling. To reset the  
controller, the SELECT button must be pressed while the LED’s indicate ER1. If the SELECT button is momentarily pressed a timer  
numerical value will be displayed. If this occurs, wait 10 sec. and the error message will again be displayed; press the SELECT button for  
10 sec. to reset controller and resume filling.  
• After the tank has filled, replace the controller cover panel.  
• Turn on power and the water heating cycle will begin; it will take 15-35 min. to complete the heating cycle. The WATER HOT light on the  
front of the unit will turn on when the water has reached temperature.  
• The brewer can now be operated to evaluate brew timer settings and then make adjustments as necessary.  
The brewer timers settings are preset at the factory to the following values:  
Small brew  
Medium brew (1.25 gal.)  
Large brew (1.75 gal.)  
(0.75 gal.)  
120 sec.  
165 sec.  
230 sec.  
• Insert the brew baskets and place the appropriate container under the brew basket.  
• Portion size is selected with the touchpad located on the front of the brewer. The upper right hand area of the touchpad has 2 LEDs. If  
both are lit the unit is set to brew the large volume. If only the upper LED is lit, the brewer will brew the medium volume; if only the lower  
LED is lit, the brewer will brew the small brew volume.  
AMERICAN METAL WARE® BREWERS  
TEMPERATURE AND BREW TIMING CONTROLS (Refer to Figure C)  
Red LEDs to indicate  
which timer is being  
programmed  
Alphanumeric LEDs to indicate  
timer settings and to display  
error codes  
Temperature and brew timing are set by the dial and keypad located on the main controller.  
This controller is positioned inside the brewer housing and is accessed by removing the  
screws which fasten the access panel to the brewer.  
The controller stores 6 independent brew timer values. On dual brewer models, 3 timers  
are used for the left brewer, and 3 are used for the right brewer. On single brewer models,  
the timers for the left side brewer are utilized for the unit and the right brewer timers are  
not utilized.  
Pushbuttons to adjust timer  
values and to select timers  
BREWER SELECTOR SWITCH  
The brewer selector switch is a 2-position slide switch located on the main controller. On  
dual brewer models it is used to select the left or right side timers for programming. On  
single brewer models, the switch should always be in the left position when programming  
the brew timers. To switch from side to side, slide switch to the desired position.  
Brewer selector switch  
Water temperature adjustment  
Figure C  
PUSHBUTTON KEYPAD  
The pushbuttons serve 4 functions:  
1) Selecting the appropriate timer  
2) Adjusting the stored timing value  
3) Instructing the controller to store a displayed value  
4) Resetting the controller after an error has been registered  
The pushbutton to the right on the controller is used for 1, 3 and 4. The pushbutton to the left on the controller is used to increase the displayed  
value. The middle pushbutton is used to decrease the displayed value.  
To select the appropriate timer once the correct brew side has been selected, press the SELECT pushbutton until the correct brew size LED is lit.  
To adjust the stored timing value, press the left pushbutton to increase the displayed value or press the middle pushbutton to decrease the displayed  
value.  
To store a displayed value, press the select button once.  
To reset the controller after an error has been registered, press the right pushbutton and hold for 10 sec. After resetting, the alphanumerical LEDs  
will return to displaying timer values.  
TEMPERATURE ADJUSTMENT KNOB  
Temperature adjustment is accomplished by rotating the small knob to the left of the brewer selector switch. Clockwise rotation will increase the  
temperature setpoint while counterclockwise rotation will decrease the setpoint. The standard factory setting is 195o F.  
OPERATION  
WARNING: WATER USED FOR BREWING COFFEE IS VERY HOT. USE CAUTION WHEN BREWING, POURING OR TRANSPORTING  
COFFEE. NEVER ATTEMPT TO MOVE THE BREWER WITHOUT FIRST DRAINING THE WATER TANK. ACCIDENTAL SPILLS MAY RESULT  
IN SEVERE BURNS.  
ICB brewers will perform the brew function only when a container is properly located under the brew basket; the pushbutton switch must be  
engaged to allow brewing. Removal of the container during a brew cycle will suspend the brewing cycle, however brew timing will continue to  
elapse and the brew basket will continue to drip.  
• Place an empty shuttle, airpot or insulated container on the shelf, counter, or accessory base (depending on model) under the brew basket.  
A cold container will significantly lower the temperature of the brewed coffee. Turn on the warmer if a shuttle is used. If the shuttle is not  
warm, allow the warmer to heat the shuttle. A short brew of water will quickly warm the container.  
• Remove the filter basket and line with a filter paper. Paper size for each basket is shown below:  
Basket  
BB1.5  
BB2.0  
Paper Size (inches)  
13 x 5  
14 x 6  
• Place ground coffee in the brew basket. Your coffee supplier can help you select the right amount of coffee and grind. Coffee brewing  
experts recommend 6.5-8 oz. of coffee per gallon of water for most applications. A full shuttle contains 1.4 gal., a full airpot contains 0.8 gal.  
and a full insulated container contains 1.75 gal.  
• Slide the brew basket into the brewer, making sure that the basket spout is properly aligned with the container opening. Rotate the basket  
locks into the locked or downward pointing position so that the basket can not be inadvertently removed.  
• Select batch size through the touchpads. Check the WATER HOT light. If it is lit, press the START switch on the touchpad. If the WATER  
HOT light is not lit, wait and press START when it has become illuminated.  
• Brew time is about 4 min. for full shuttles and insulated containers, less for half batches and airpots. After the brew, allow the coffee to drip for  
1-2 min.  
CAUTION:HOT LIQUID HAZARD!: COFFEE BASKET CONTAINS VERY HOT LIQUID UNTIL THE DRIP-THROUGH IS COMPLETED. EARLY  
REMOVAL OF THE BASKET COULD RESULT IN BURNS.  
• Remove the brew basket, dump grounds from the basket and rinse for the next brew. Coffee is ready to serve.  
• The shuttle may be moved to a remote warming station and the insulated container can be moved to a remote dispensing site.  
Page 3  
AMERICAN METAL WARE® BREWERS  
STANDARD FEATURES  
Three options are available on this equipment; these options are available independently of each other. The features are described below:  
Pre-infusion: This option enables the brewer to wet the grounds and then have a dwell period before the brew cycle is completed. This option  
causes the brew valve to open for a period of time, close for an equal period of time and then open again for completion of the brew. The preset  
periods are, respectively, 15, 30 and 45 seconds for the small, medium and large settings. After this no-dispense period, the valve re-opens to  
complete the remaining 82% of the cycle.  
Low Temp, No Brew: This option inhibits the initiation of a brew cycle in the event that water temperature in the tank is more than 5°F lower than  
the setpoint. In the event that the temperature is outside of the acceptable range, the WATER HOT light will be off. A brew cycle can only be  
initiated when the light is on if this option is employed; attempts to initiate a brew when the light is off will be ignored by the controller.  
Automatic Bypass: This option allows the brewer to provide for bypassing of the grounds only for the large portion size by signaling a solenoid  
valve in the bypass circuit to open only when the large portion size is selected. The bypass amount is set by regulating the flow through the  
standard manual bypass valve provided on all units (see Bypass Adjustment).  
These features can be removed at no charge by ordering the following options:  
ICB-400/300  
Option 250 eliminates pre-infusion, lo-temp/no brew,  
Option 251 eliminates pre-infusion,  
Option 252 eliminates lo-temp/no brew,  
leaves auto bypass only  
leaves lo-temp/no brew, and auto bypass  
leaves pre-infusion and auto bypass  
P430/330  
Opt 253 eliminates low temp/no brew  
Opt 258 eliminates low temp/no brew and auto bypass  
Opt 259 eliminates low temp/no brew and pre-infusion  
leaves pre-infusion and auto bypass  
leaves pre-infusion only  
leaves auto bypass only  
ADJUSTMENTS  
WARNING: ELECTRICAL SHOCK HAZARD! DANGEROUS ELECTRIC VOLTAGES ARE PRESENT NEAR ADJUSTABLE COMPONENTS.  
ONLY QUALIFIED SERVICE PERSONNEL SHOULD MAKE ADJUSTMENTS.  
Components for adjustment of brew volume/brew timing and of temperature are located behind the small access panel located in the right-side  
brewing alcove on ICB units and on the front panel on Columbia units. Adjustment for bypass is under the top panel. To access these  
components:  
• Turn off electric power to unit at the main breaker assigned to the unit (or disconnect the cord where applicable) when removing the  
top panel.  
• Remove the screws fastening the appropriate panel to the body.  
• Remove the panel.  
TEMPERATURE ADJUSTMENT  
Brew water temperature can be adjusted by turning the knob on the main controller located behind the controller access panel. Temperature  
adjustment range is from 175°F to 202°F. Adjustment for temperature should be made after measuring the temperature of the water dispensed  
from the brew head by the following procedure.  
1) Remove sprayhead from brewer and set aside.  
2) Place a container under the outlet.  
3) Press START and, using a thermometer, measure the temperature of the water being dispensed.  
4) If a higher temperature is desired, rotate the TEMPERATURE ADJUSTMENT knob clockwise. If a lower temperature is desired, rotate the  
temperature adjustment knob counterclockwise.  
5) If water temperature setting has been increased, wait until heater has cycled and then follow steps 3 and 4 again. If water temperature  
setting has been decreased, brew a large portion of water and repeat steps 3 and 4.  
6) Continue this procedure until desired brew temperature is achieved.  
7) Replace sprayhead.  
BREW TIMING/BREW VOLUME ADJUSTMENT  
Brew volume is adjusted by adjusting the timer values of the controller (refer to Temperature and Brew Timing Controls). The brewer timers  
settings are preset at the factory to the following values:  
Small brew  
Medium brew  
Large brew  
(0.75 gal.)  
(1.25 gal.)  
(1.75 gal.)  
120 sec.  
165 sec.  
230 sec.  
Before adjusting brew timing, brew a batch of water and measure the brew volume. Record this value.  
To adjust brew timing:  
• Remove controller access panel.  
• If making timer adjustments on a twin brewer, slide the brewer selector switch to the appropriate position. On single brewers, the switch  
should always be in the left position.  
• Press the SELECT button momentarily; a LED will light up to indicate which timing selection is being displayed on the alphanumeric  
display. The top LED corresponds to the small portion size, the middle LED corresponds to the medium size, and the lower LED  
corresponds to the large setting. Note the timer value displayed. The new timing should be calculated by the following:  
Desired Brew Time = Desired Brew Volume  
X Current Brew Time  
Current Brew Volume  
• After selecting the appropriate side and portion timer, adjust the timer value to the desired value by pressing the UP or DOWN buttons on  
the controller. Hold the button down until the desired value is displayed; then press the SELECT button on the controller.  
• Brew a batch of water and measure volume dispensed. Repeat procedure as necessary until desired volume is dispensed.  
• Replace access panel.  
Page 4  
AMERICAN METAL WARE® BREWERS  
BYPASS ADJUSTMENT (Refer to Figure D)  
The bypass valve adjusts the amount of water that bypasses coffee grounds and dilutes the  
final brew. The factory setting is no bypass.  
Bitter coffee results when the amount of ground coffee is too small. Therefore, if coffee is too  
strong, it is better to adjust the bypass rate instead of reducing the amount of coffee.  
NOTE: Always adjust bypass before adjusting brew time because bypass affects  
brew rate.  
• Turn off electrical power to brewer and remove top cover.  
• Locate the bypass valve to be adjusted. The bypass valve is located to the right and in  
front of the brew tee.  
• Open the valve by turning the valve handle counterclockwise to the desired setting.  
(Refer to information below.)  
BYPASS VALVE  
BYPASS SETTING  
Closed  
BYPASS % OF TOTAL BREW  
Figure D  
0
1 revolution  
8
2 revolutions  
12  
22  
33  
3 revolutions  
4 revolutions  
• Measure the bypass setting:  
a) Remove the brew basket.  
b) Place an empty shuttle (with lid removed) under the sprayhead.  
c) Place a measuring cup under the bypass outlet.  
d) Press START and brew water for about 30 sec. or until measuring cup is almost full.  
e) Record the amount of water in the bypass measuring cup.  
f) Add the water from the measuring cup to the shuttle; measure total volume and record.  
Bypass % = (Bypass Volume/Total Volume) X 100  
• Adjust the bypass valve setting and repeat measuring process until valve is set as desired.  
CARE AND 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.  
EVERYDAY  
• Wash the brew baskets with warm, soapy water. The wire basket can be removed to aid cleaning of the brew basket.  
• Remove the spray heads that are located above the brew baskets using gloves or a heavy towel. Wash to remove any coffee oils and to  
clean any plugged holes.  
• Clean shuttles and insulated containers with warm, soapy water and a plastic or non-abrasive brush or towel.  
• Clean airpots with warm, soapy water and a bottle brush. Take care not to break the glass interior. Use only a soft cloth and warm, soapy  
water or stainless steel polish on the outside to avoid scratching exterior surface.  
• Wipe the exterior of the brewer with a damp cloth. Do not use abrasives, which can scratch brewer surfaces.  
• If shuttles are to be left on warmer overnight, fill with water to avoid coffee oil burn-in.  
WEEKLY OR BIWEEKLY, DEPENDING UPON USE  
• Fill the shuttle, airpot or insulated container with hot water to about 2/3 full.  
• Pour the recommended amount of urn cleaner into the container. (Excessive amounts of cleaner will attack the stainless steel lining of the  
shuttle and insulated container.)  
• Scrub the liner interior with a plastic bristle brush.  
• Remove the knurled nut at the top of the gauge glass and clean the glass with a small bottle brush.  
• Pour out the contents of the shuttle.  
• Remove the handle assembly of the shuttle or insulated container faucet by unscrewing the plastic bonnet.  
• Gently wash the faucet seat cup with a soft cloth and warm, soapy water.  
• Wash the faucet shank with a bottle brush.  
• Soak the airpot pick-up tube assembly in hot, soapy water. Urn cleaner may be used for stronger cleaning.  
• Clean the warmer and bottom of shuttle surfaces; these surfaces must be clean for proper heat transfer.  
• 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.  
Page 5  
AMERICAN METAL WARE® BREWERS  
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 cause 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.  
TROUBLESHOOTING GUIDE  
Problem  
Possible Cause  
Solution  
ERROR MESSAGE  
• Fill valve on for over 5 min. (This occurs during • Check system for water leaks. Correct any  
ER1  
ER2  
initial fill on some units. See Initial Start-up)  
leaks and reset controller.  
• Thermistor failure or loose connections in  
thermistor circuit.  
• Ensure that connector CN7 is securely  
attached to controller and that the thermistor  
disconnect is securely connected. Secure  
connections and reset controller. If error  
reoccurs, replace thermistor.  
FILLING PROBLEMS  
• Check to see if water enters tank continuously  
(usually at a slow rate). Disassemble valve and  
clean out debris. Valve may need a new  
plunger if seal is worn.  
• Fill valve not sealing properly.  
Overfilling water tank when power  
is OFF  
• Look for flow direction arrow on valve body. If  
arrow on valve is pointing toward water inlet,  
remove valve and install arrow pointing away  
from inlet.  
• Fill valve installed backwards.  
• Disconnect electrode wire at quick connect  
(red wire). Connect a wire from the quick  
connect to the cabinet body. If filling stops, this  
is the error cause. Remove electrode  
• High electrode coated with lime or faulty.  
Overfilling water tank when power  
is ON  
assembly and clean the probes. If problem is  
not corrected, replace electrode assembly.  
• Check to ensure connection (yellow wire) is  
secure. Make connection to tank secure.  
• Secure connection from control board to metal  
enclosure does not stop filling. Replace control  
board.  
• Connection from control board to tank body  
faulty.  
• Control board is faulty.  
• Check for proper voltage at terminal block.  
Check circuit breaker on supply circuit.  
Establish electric power to unit.  
• 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.  
Establish water supply to unit.  
• No electrical power to equipment.  
• No water supplied to equipment.  
Tank does not refill  
• Water pressure before strainer but not after.  
Remove and clean or replace strainer.  
• Check for 120V across transformer primary  
terminals by disconnecting the quick-connect  
for the red and white wires to the transformer  
and measuring voltage at this point. If there is  
not 120V across primary, proceed to step  
entitled “No power to control board and  
transformer not powered”. If there is 120V  
across primary, proceed to step entitled, “No  
power to control board and transformer  
powered”.  
• Water strainer clogged.  
• No power to control board.  
• Ensure there is 120V across terminal L1 and N  
posts. Check connections. Secure connections  
and reset circuit breaker on equipment.  
• Disconnect quick disconnect on secondary  
side of transformer at quick disconnect  
between yellow, black, and blue wires. Check  
12Vac between black wire and other wires.  
Check 24Vac between blue and yellow wires.  
If there is no 12Vac between black wire and  
either blue or yellow wire or if there is not  
24Vac between the blue and yellow wires,  
replace transformer. If proper voltage  
• No power to control board and transformer not  
powered-connections not secure and/or circuit  
breaker tripped.  
• No power to control board and transformer  
powered.  
exists, secure connection between 5 pin  
connector CN1 and Control board.  
Page 6  
AMERICAN METAL WARE® BREWERS  
TROUBLESHOOTING GUIDE (cont’d)  
Possible Cause  
Problem  
Solution  
• Check to ensure proper connection between  
connector CN4 and control board. Check for  
proper connections at fill valve terminals.  
Check for proper connections between N  
terminal of fill valve and terminal block. Drain 1  
gal. of water from hot water faucet. Check for  
120Vac across fill valve terminals. If connector  
CN4 is securely attached to control board and  
all connections are secure and there is 120Vac  
across fill valve terminals, replace  
• Fill valve is faulty.  
Tank does not refill (cont’d)  
control board.  
• Check to ensure proper connection between  
connector CN4 and control board. Check for  
proper connections at fill valve terminals.  
Check for proper connections between N  
terminal of fill valve and terminal block. Drain 1  
gal. of water from hot water faucet. Check for  
120Vac across fill valve terminals. If connector  
CN4 is securely attached to control board and  
all connections are secure and there is 120Vac  
across fill valve terminals, replace control  
board.  
• Control board is faulty.  
HEATING PROBLEMS  
• No electrical power to equipment.  
• Check for proper voltage at terminal block.  
Check circuit breaker on supply circuit.  
Establish electrical power to unit.  
Tank does not heat  
• Check for 120V across transformer primary  
terminals by disconnecting the quick-connect  
for the red and white wires to the transformer  
and measuring voltage at this point. If there is  
not 120V across primary, proceed to step  
entitled “No power to control board and  
transformer not powered”. If there is 120V  
across primary, proceed to step entitled, “No  
power to control board and transformer  
powered”.  
• No power to control board.  
• Disconnect electrode wire at quick connect  
(red wire). Connect a wire from the quick  
connect to the cabinet body. If heating begins,  
this is the error cause. Remove electrode  
assembly and clean the probes. If problem is  
not corrected, replace electrode assembly.  
• Check to ensure connection (yellow wire) is  
secure. Make connection to tank secure.  
• Check to ensure connections (yellow and  
orange wires) are secure. Make connections to  
relay secure.  
• High 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. • Check to ensure connection (red and blue  
wires) are secure. Make connection to relay  
secure.  
• Connection to remainder of heater circuit faulty. • Check to ensure connections from relay to  
thermal cut-out and from thermal cut-out to  
contactor and from contactor to N terminal of  
terminal block are secure. Make connections  
secure.  
• Heater relay faulty.  
• Ensure that coil on heater relay is energized  
by ensuring that there is 12Vac between the  
yellow and orange wires attached to the relay.  
Remove the blue and red wires from the relay  
and check for an open circuit across the  
connection tabs (COM and NC) to which the  
wires were attached. If the relay coil is  
energized and there is an open circuit across the  
connection tabs, replace relay.  
• Thermal cut-out tripped or faulty.  
• 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 after resetting  
thermal cut-out). Press button on thermal cut-out,  
if open circuit condition continues, replace thermal  
cut-out.  
Page 7  
AMERICAN METAL WARE® BREWERS  
TROUBLESHOOTING GUIDE (cont’d)  
Problem  
Possible Cause  
Solution  
• Contactor faulty.  
• Ensure that coil on heater relay is energized by  
ensuring that there is 12Vac between the blue  
and white wires attached to the relay. Check  
each side of the contactor (Line and Load) at  
each pole for continuity. If the contactor coil is  
energized and there is an open circuit across  
any of the contactor poles, replace contactor.  
• Check resistance across element(s) with power  
conductors disconnected. If resistance is much  
less than 8 Ohms or much more than 15  
Ohms, replace heater(s).  
Tank does not heat (cont’d)  
• Heater faulty.  
• Control board is faulty.  
• Check to ensure proper connection between  
connector CN2 and control board. Check for  
proper connections in all heater control  
circuitry. Check for proper connections between  
N terminal of contactor coil and terminal block.  
If connector CN2 is securely attached to control  
board and all connections are secure and  
functioning except there is not 120Vac across  
contactor coil terminals, replace control board.  
BREWING PROBLEMS  
• Check resistance across element(s) with power  
conductors disconnected. If resistance is much  
less than 8 Ohms or much more than 15  
Ohms, replace heater(s).  
Brew recovery time is very long  
Heater faulty.  
• Review timer settings versus portion size.  
Adjust timer to desired value or select different  
portion size.  
Portion selected on touchpad not correct.  
Timer not set properly.  
Brew volume too large or too small  
• Compare time setting to either factory setting or  
initial user setting to determine if it has been  
changed. Adjust timer to desired value.  
• Check to see that fill valve cycles on and off  
frequently during brew cycle when all brew  
heads are used simultaneously. Check to  
ensure that water supply line is 3/8” and  
pressure is between 30 and 70 psi. Supply  
water at adequate pressure and flow rate.  
• Visually check for clogging of holes in brew  
head. Clean all hoses.  
Water supply pressure or flow rate not  
adequate.  
Sprayhead clogged.  
• Visually inspect brew valves at hose  
connections. Clean lime from valve. Seat, cup  
or entire valve may need replacement.  
Brew valves clogged with lime deposits.  
• Check water pressure with and without other  
appliances operating. Plumb water supply so  
that water pressure is not significantly affected  
by other appliances.  
Brew volume erratic  
NOTE: Small variations from batch  
to batch are normal.  
Water supply pressure fluctuates.  
• Momentary switch to indicate container in  
place (ICB only) not engaged or faulty.  
• Check to see that container fully engages  
switch. Check for continuity across switch is  
engaged. If fully engaged switch does not  
complete circuit across terminal off switch,  
replace switch.  
Brew cycle will not start  
• Brew circuit connections not secure.  
• Circuit breaker tripped or faulty.  
• Check to see that connector (CN3 or CN4) is  
securely connected to control board. Check to  
see that all connections from controller through  
brew valve and through N terminal of terminal  
block are secure. Secure connections.  
• Check to see if breaker reset button is out,  
indicating a tripped breaker. If breaker is  
tripped, determine cause and reset; replace  
breaker if faulty.  
Page 8  
AMERICAN METAL WARE® BREWERS  
TROUBLESHOOTING GUIDE (cont’d)  
Problem  
Possible Cause  
Solution  
Brew cycle will not start (cont’d)  
• Check to see if there is 120Vac across brew  
valve terminal. If there is 120Vac across  
terminals and brew valve is not open,replace  
valve.  
• Brew valve faulty.  
• Check to see that touchpad connections to  
control board are secure. If connections are  
secure, other functions appear normal and  
touchpad will not initiate a brew cycle,  
replace touchpad.  
• Touchpad faulty.  
• Controller faulty.  
• Check to see that the power is supplied to  
the controller by following the  
Troubleshooting section on Filling  
Problems. Once touchpad and momentary  
switch integrity is assured (see above),  
initiate a brew cycle and check 120Vac  
across brew valve. If there is not 120Vac  
across brew valve, replace control board.  
• Visually inspect brew valve at hose  
connections. Clean lime from valve. Seat,  
cup or entire valve may need replacement.  
• Remove sprayhead and determine if drip is  
coming from overflow. Reduce tank  
temperature.  
• Brew valve not closing completely.  
• Water in tank boiling.  
Sprayhead will not stop dripping  
water  
If you still need help, call our service department at (800) 568-5715 (Monday through Friday, 8 am - 6 pm EST) or an authorized service center in  
your area. Please have the model and serial numbers ready so that accurate information may be given.  
Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.  
Page 9  
AMERICAN METAL WARE® BREWERS  
P-430, P-330, ICB-400, ICB-300  
A530-051  
A712-170  
A712-174  
A536-018  
A531-073  
A712-066  
A515-027  
A537-129  
A531-072  
A537-154  
A535-071  
A535-059  
A554-101  
DESCRIPTION  
Part #  
Relay, 12V d.c. Coil  
Controller  
A515027  
A530-051  
A531-072  
A531-073  
A535-071  
A535-059  
A536-018  
A537-129  
A537-154  
A554-101  
A712-066  
A712-170  
A712-174  
Relay, Power, 115V Coil  
Switch, Red Stop  
Element, Heating 6.6kw 240 Vac  
Element, Heating 6.6kw 240 Vac  
Probe, Thermistor  
Valve, Brew  
Valve, Fill  
Light, Red  
Probe, ICB/P430/P330  
Touchpad Assy, ICB  
Touchpad Assy, P430/330  
Page 10  
AMERICAN METAL WARE® BREWERS  
NOTES  
Page 11  
WARRANTY  
For Models ICB-400, ICB-300, P-430, P-330  
RAP-430, RAP-330, RAPS-430, RAPS-330  
EFFECTIVE OCTOBER 1, 1998  
GENERAL WARRANTY INFORMATION  
Grindmaster Corporation maintains the highest standard of quality control in the manufacturing of American  
Metal Ware products. We use the finest components and materials, and employ quality engineering standards  
and tests. Models ICB-400, ICB-300, P-430, P-330, RAP-430, RAP-330, RAPS-430, RAPS-330 Brewers will be  
warranted for a period of one year from date of shipment. This warranty will include parts and labor but will not  
cover transportation and shipping charges and will be limited to equipment sold to commercial purchasers and  
installed in the continental U.S.A., Hawaii, Alaska and Canada.  
EXCEPTIONS  
Coverage is not included for labor needed or caused by:  
• Adjustments of temperature or flow rates or timers. These adjustments are covered in the  
technical manual provided and subject to user preferences.  
• This warranty does not cover maintenance consumable parts such as o-rings, seat cups,  
washers. These are subject to NORMAL wear or everyday usage and are a responsibility of  
the user.  
• Accident  
• Improper installation  
• Neglect or abuse  
• Excessive lime/mineral content of water used  
• Cleaning of any category. Cleaning is a user’s responsibility.  
• All warranties are null and void if muriatic or any other form of hydrochloric acid is used for  
cleaning or deliming our equipment.  
NOTE: THIS WARRANTY SUPERSEDES ANY OTHER WARRANTY. ALL OTHER WARRANTIES,  
EXPRESSED OR IMPLIED, INCLUDING THE WARRANTIES OR MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE OR USE, ARE HEREBY EXCLUDED AND DISCLAIMED.  
HOW TO OBTAIN WARRANTY SERVICES  
Call Grindmaster Corporation’s Service Department toll free at 1-800-568-5715, or write to: Grindmaster  
Corporation Factory Service Center, P.O. Box 35020, Louisville, KY 40232 USA. In order to receive a warranty  
service, you must provide the serial number of the machine requiring service along with a description of the  
problem. Service will be arranged through one of our authorized local service centers or our factory service  
center. Transportation is the user’s responsibility. Should it become necessary to transport your machine to a  
service center, make sure it is properly packaged to avoid in-transit damage, which is not covered by this  
warranty.  
No field, outside or service station work is covered by this warranty without prior authorization by  
Grindmaster Corporation’s Service Dept.  
Grindmaster Corporation  
4003 Collins Lane  
Louisville, KY 40245 USA  
(502) 425-4776  
PostScript Picture  
(AMW BLK.EPS)  
FAX (502) 425-4664  
1203 Form # AM-332-02  
Grindmaster Corporation, 1998  
Part # A090-091  
PRINTED IN USA  

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