Grindmaster RAPS-430, RAPS-330, RAP-330 Tank does not heat cont’d, Brew recovery time is very long

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AMERICAN METAL WARE® BREWERS

TROUBLESHOOTING GUIDE (cont’d)

Problem

Tank does not heat (cont’d)

Possible Cause

• Contactor faulty.

•Heater faulty.

•Control board is faulty.

BREWING PROBLEMS

Solution

•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).

•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.

 

 

Brew recovery time is very long

•

Heater faulty.

• 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 volume too large or too small

• Portion selected on touchpad not correct.

• Review timer settings versus portion size.

 

 

 

 

 

Adjust timer to desired value or select different

 

 

 

 

 

 

 

 

 

 

 

 

 

 

portion size.

 

 

 

 

 

• Timer not set properly.

• Compare time setting to either factory setting or

 

 

 

 

 

 

 

initial user setting to determine if it has been

 

 

 

 

 

 

 

changed. Adjust timer to desired value.

 

 

 

 

 

• Water supply pressure or flow rate not

• Check to see that fill valve cycles on and off

 

 

 

 

 

 

adequate.

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.

 

 

 

 

 

•

Sprayhead clogged.

• Visually check for clogging of holes in brew

 

 

 

 

 

 

 

head. Clean all hoses.

 

 

 

 

 

• Brew valves clogged with lime deposits.

• Visually inspect brew valves at hose

 

 

 

 

 

 

 

connections. Clean lime from valve. Seat, cup

 

 

 

 

 

 

 

or entire valve may need replacement.

 

 

 

 

 

 

 

 

 

 

Brew volume erratic

• Water supply pressure fluctuates.

• Check water pressure with and without other

 

 

 

NOTE: Small variations from batch

 

 

appliances operating. Plumb water supply so

 

 

 

to batch are normal.

 

 

that water pressure is not significantly affected

 

 

 

 

 

 

 

by other appliances.

 

 

 

 

 

• Momentary switch to indicate container in

• Check to see that container fully engages

 

 

 

Brew cycle will not start

 

 

 

 

 

place (ICB only) not engaged or faulty.

switch. Check for continuity across switch is

 

 

 

 

 

 

 

engaged. If fully engaged switch does not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

complete circuit across terminal off switch,

 

 

 

 

 

• Brew circuit connections not secure.

replace switch.

 

 

 

 

 

• 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

 

 

 

 

 

• Circuit breaker tripped or faulty.

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Electrical Power Supply HOOK-UP SET-UP and Positioning of BrewerWater and Electrical Connections Water HOOK-UPStop Switch Interrupt SwitchInitial START-UP cont’d User Controls Routine Operation Controls TouchpadsTemperature and Brew Timing Controls Refer to Figure C Brewer Selector SwitchTemperature Adjustment Knob Pushbutton KeypadStandard Features AdjustmentsTemperature Adjustment Brew TIMING/BREW Volume AdjustmentCare and Cleaning Everyday Weekly or BIWEEKLY, Depending Upon USETroubleshooting Guide Troubleshooting Guide cont’d Possible Cause Solution Tank does not refill cont’d Tank does not heatBrew recovery time is very long Brew volume too large or too smallBrew volume erratic Tank does not heat cont’dBrew cycle will not start cont’d Sprayhead will not stop dripping water430, P-330, ICB-400, ICB-300 DescriptionAmerican Metal Ware Brewers General Warranty Information HOW to Obtain Warranty ServicesExceptions Grindmaster Corporation

P-430, ICB-300, RAP-430, P-330, ICB-400 specifications

The Grindmaster P-430, ICB-300, RAP-330, RAP-430, and RAPS-430 are notable commercial coffee brewing and grinding machines known for their reliability and advanced features. Each of these models is tailored to meet the demands of various commercial environments, ensuring the best quality coffee for both operators and customers.

The Grindmaster P-430 is designed as a high-capacity, automatic coffee brewer that can brew up to 3.5 gallons of coffee per hour. Equipped with a digital display, this model offers precise temperature controls, ensuring optimal extraction. Its versatility allows integration with an array of brewing options, making it suitable for diverse coffee blends. Another hallmark feature is its unique spray head design, which guarantees even water distribution over the coffee grounds to enhance flavor.

The ICB-300 is a state-of-the-art coffee brewer that combines scale, energy efficiency, and superior brewing quality. It features a touch-screen interface for user-friendly programming and operation. The ICB-300 incorporates advanced brewing technology that monitors brew time and temperature, promoting consistent coffee quality. Its design is compact, making it an excellent choice for coffee shops with limited space yet a high demand for top-tier coffee.

The RAP-330 and RAP-430 are high-volume coffee grinders that excel in creating fresh grounds on demand. The RAP-330 model can accommodate various grind sizes, which allows users to brew coffee based on their preference. It boasts a powerful motor that swiftly grinds coffee beans while preserving essential oils and flavors. Meanwhile, the RAP-430 takes grinding efficiency a notch higher with a larger hopper and an adjustable grind size feature, catering to the unique requirements of busy establishments.

Lastly, the RAPS-430 represents a complete coffee brewing station equipped with both grinding and brewing capabilities. This all-in-one machine is tailored for operators who want to streamline the coffee preparation process. Its advanced automation features facilitate a consistent workflow, significantly reducing the time from grinding to brewing. The RAPS-430 emphasizes ease of cleaning and maintenance, making it a practical choice for busy cafés.

In summary, these models showcase a range of cutting-edge technologies that enhance the coffee preparation experience. From precise temperature controls and user-friendly interfaces to advanced grinding features, the Grindmaster series aims to deliver exceptional quality and efficiency in commercial settings. Whether brewing, grinding, or both, these machines are built to satisfy the demands of any coffee enthusiast.
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