Bunn SRUA Contactor, Location, BLK Thermal Block L1 Fuse to Tank Heater RED Thermal Fuse

Page 14
FIG. 2 CONTACTOR

SERVICE (cont.)

CONTACTOR

P2211.40

Location:

The contactor is located inside the front lower access panel, left of center on the component bracket.

Test Procedures:

1.Disconnect the brewer from the power source.

2 Disconnect the red wire from contactor coil to the control thermostat and the black wire from the contactor coil to the main harness.

3.Connect the brewer to the power source.

4.Check the voltage across the control thermostat wire and the wire from the the main harness.The indication must be 230 volts ac.

5.Disconnect the brewer from the power source. If voltage is present as described, proceed to #6.

If voltage is not present as described refer to the Wiring Diagram and check the brewer wiring harness.

6.Check for continuity between the left and right terminals on the contactor coil.

If continuity is present as described, reconnect the wires and proceed to #7.

If continuity is not present as described, replace the contactor.

7.On all brewers check the voltage across the upper left terminal and the upper right terminal on the contactor with a voltmeter. Connect the brewer to the power source. The indication must be 230 volts ac.

8.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #9.

If voltage is not present as described, refer to the wiring diagram and check the brewer wiring harness.

9.Check for continuity across the terminals on the left side of the contactor by manually closing the contacts. Continuity must not be present when the contact is released.

10.Check for continuity across the terminals on the

right side of the contactor by manually closing the contacts. Continuity must not be present when the contact is released.

If continuity is present as described, the contactor is operating properly.

If continuity is not present as described, replace the contactor.

Removal and Replacement:

1.Disconnect all the wires from the contactor.

2.Remove the two #8-32 screws securing the contactor to the contactor mounting bracket.

3.Install new contactor and secure with two #8-32 screws.

4.Refer to Fig. 3 and reconnect the wires.

BLK to Terminal

Block (L2)

BLK to Main Har-

 

ness

 

 

RED to Terminal

BLK Thermal

Block (L1)

 

Fuse to Tank

 

Heater

 

RED Thermal Fuse

RED to Control

Thermostat

to Tank Heater

 

 

P1725.50

FIG.3 CONTACTOR TERMINALS

Page 14

10067.3 070102

 

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Bunn Srua Post Office BOX SPRINGFIELD, IllinoisBUNN-O-MATIC Commercial Product Warranty IntroductionUser Notices Plumbing Requirements Electrical Installation InstructionsElectrical Requirements Initial Setup Plumbing Hook-upAdjusting Brew Volumes Filter Holder CleaningCoffee Brewing Remedy TroubleshootingProblem Probable Cause Direction of flow arrow must be pointing towards brewer ProblemBrew cycle will not start Tank not filling Problem Probable Cause Remedy Funnel overflows Filters Refer to Service Solenoid Valve for testing procedures. SeePump tubing StructedRemove and clean lime off the tank heater. See Coffee reservoir overflows Brewer is making unusal noisesService Component AccessBLK Thermal Block L1 Fuse to Tank Heater RED Thermal Fuse ContactorLocation ThermostatDisconnect the red wires from the control thermo- stat Control ThermostatFuse and Fuse Holder Fuse and Fuse HolderLimit Thermostat Limit ThermostatLiquid Level Board and Level Probe Liquid Level BoardService Liquid Level Board and Level Probe RED to Start Switch, Brew ON/OFF SwitchDisconnect all wires on the ON/OFF switch Pump Assembly Pump AssemblySelector Switch Half Batch Option Selector Switch Half BatchSolenoid SolenoidStart Switch Brew LocationSwing ARM Switch Swing ARM SwitchTank Heater Tank HeaterThermal Fuses Thermal FusesTimer Service Digital Brew Timer Late Models If voltage is as described, proceed to #7Digital Timer Terminals 10491.0004A 07/02 2002 BUNN-O-MATIC Corporation

SRUA specifications

The Bunn SRUA is an innovative coffee brewer that is designed to meet the needs of commercial environments, like restaurants, cafes, and office breakrooms. This machine is known for its efficiency, reliability, and exceptional brewing quality. The SRUA model is particularly popular for its ability to produce consistently great-tasting coffee with minimal effort.

One of the standout features of the Bunn SRUA is its unique brewing technology. The machine is equipped with a patented brewing system that allows for precise control over temperature and brewing time. This ensures that the coffee is brewed at the optimal temperature, extracting the maximum flavor from the coffee grounds. The SRUA also features a hot water faucet that provides instant hot water for tea or other beverages, enhancing versatility in beverage options.

The Bunn SRUA has a large capacity, able to brew multiple pots of coffee quickly. It can produce up to 3.8 gallons of coffee per hour, making it ideal for high-demand settings. The brewer has a built-in water tank that maintains the right temperature at all times, reducing wait times and allowing for quick service during busy hours.

In terms of design, the SRUA is built to withstand the rigors of daily use in commercial settings. It features high-quality stainless steel construction, ensuring durability and longevity. Additionally, the machine is relatively compact, allowing it to fit on countertops with limited space while still providing high-volume output. The user-friendly interface and clear indicator lights make operating the machine straightforward, even for staff with minimal training.

Moreover, the Bunn SRUA emphasizes easy maintenance. The machine comes with a removable brew basket and a stainless steel funnel that simplify cleaning and prevent residue buildup. Regular maintenance is streamlined, helping to keep the brewer functioning at peak performance.

Security features are also integrated into the Bunn SRUA, with options for water line connection and manual fill capabilities, allowing users to choose the most convenient setup for their needs.

In summary, the Bunn SRUA is a powerful, efficient, and durable commercial coffee brewing solution that delivers exceptional performance and versatility, making it an excellent choice for businesses that prioritize quality and service.
Top Page Image Contents