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

 

 

 

 

ER1

• Fill valve on for over 5 min. (This occurs during

• Check system for water leaks. Correct any

 

 

 

 

 

 

initial fill on some units. See Initial Start-up)

leaks and reset controller.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ER2

• Thermistor failure or loose connections in

• Ensure that connector CN7 is securely

 

 

 

 

 

 

 

 

 

 

 

 

thermistor circuit.

attached to controller and that the thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

disconnect is securely connected. Secure

 

 

 

 

 

 

 

connections and reset controller. If error

 

 

 

 

 

 

 

reoccurs, replace thermistor.

 

 

 

 

 

 

FILLING PROBLEMS

 

 

 

 

 

 

 

 

 

 

 

Overfilling water tank when power

• Fill valve not sealing properly.

• Check to see if water enters tank continuously

 

 

 

 

 

 

 

(usually at a slow rate). Disassemble valve and

 

 

 

is OFF

 

 

 

 

 

clean out debris. Valve may need a new

 

 

 

 

 

 

 

 

 

 

 

 

 

 

plunger if seal is worn.

 

 

 

 

 

 

• Fill valve installed backwards.

• 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.

 

 

 

 

 

 

• High electrode coated with lime or faulty.

• Disconnect electrode wire at quick connect

 

 

 

 

 

 

 

 

 

Overfilling water tank when power

 

(red wire). Connect a wire from the quick

 

 

 

 

connect to the cabinet body. If filling stops, this

 

 

 

is ON

 

is the error cause. Remove electrode

 

 

 

 

 

 

 

assembly and clean the probes. If problem is

 

 

 

 

 

 

 

not corrected, replace electrode assembly.

 

 

 

 

 

 

• Connection from control board to tank body

• Check to ensure connection (yellow wire) is

 

 

 

 

 

 

faulty.

secure. Make connection to tank secure.

 

 

 

 

 

 

• Control board is faulty.

• Secure connection from control board to metal

 

 

 

 

 

 

 

enclosure does not stop filling. Replace control

 

 

 

 

 

 

 

board.

 

 

 

 

 

 

• No electrical power to equipment.

• Check for proper voltage at terminal block.

 

 

 

 

 

 

 

 

 

 

 

 

 

Check circuit breaker on supply circuit.

 

 

 

Tank does not refill

 

 

Establish electric power to unit.

 

 

 

 

 

 

• No water supplied to equipment.

• 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.

 

 

 

 

 

 

• Water strainer clogged.

• Water pressure before strainer but not after.

 

 

 

 

 

 

 

Remove and clean or replace strainer.

 

 

 

 

 

 

• No power to control board.

• 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 and transformer not

• Ensure there is 120V across terminal L1 and N

 

 

 

 

 

 

powered-connections not secure and/or circuit

posts. Check connections. Secure connections

 

 

 

 

 

 

breaker tripped.

and reset circuit breaker on equipment.

 

 

 

 

 

 

• No power to control board and transformer

• Disconnect quick disconnect on secondary

 

 

 

 

 

 

powered.

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

 

 

 

 

 

 

 

exists, secure connection between 5 pin

 

 

 

 

 

 

 

connector CN1 and Control board.

 

 

 

 

 

 

 

 

 

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Grindmaster ICB-300, RAPS-430, RAPS-330, RAP-330, ICB-400, RAP-430 manual Troubleshooting Guide
Page 5 Page 7

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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