Bunn SRUA service manual Timer

Page 28

SERVICE (cont.)

TIMER

EARLY MODELS

P2114.40

FIG. 27 TIMER

Location:

The timer is located behind the front access panel on the right side of the component bracket.

Test Procedures:

1.Disconnect the brewer from the power source.

2.Disconnect the polarized, three pin connector from the brewer main harness and rotate the brew timer dial fully counterclockwise.

3.With a voltmeter check the voltage across sockets P2 and P3 (black and red wire) of the female connector on the main wiring harness when the "ON/OFF" switch is in the "ON" (upper) position. Connect the brewer to the power source. The indication must be 230 volts ac.

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

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

5.With a voltmeter check the voltage across the sockets P1 and P2 (blue and black wires) of the female connector on the main harness when the "ON/OFF" switch is in the "ON" (upper) position and the start switch pressed. Connect the brewer to the power source. The indication must be 230 volts ac.

6.Disconnect the brewer from the power source.

7.Reconnect the three pin connector from the main wiring harness to the connector on the timer.

If voltage is present as described, proceed to #8.

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

8.Disconnect the black and white wires to the swing arm switch and pump leads.

9.With a voltmeter check the voltage across the black and white wires when the "ON/OFF" switch is in the "ON" (upper) position and the start switch

pressed to the start position and released. Connect the brewer to the power source. The indication must be 230 volts ac.

If voltage is present as described, the brew timer is operating properly. Reset the timer dial as required, to obtain the desired brew volume.

If voltage is not present as described, replace the timer.

Removal and Replacement:

1.Disconnect the male connector on the timer from the female connector on the main wiring harness.

2.Disconnect the timer leads from the swing arm switch lead and pump lead.

3.Disconnect the three pin connector from the HALF/ FULL batch selector switch to the three pin plug on the brew timer.

4.Remove the two #8-32 screws securing the brew timer to the component bracket and remove timer.

5.Position new timer on the component bracket and secure with two #8-32 screws.

6.Refer to Fig. 30 and reconnect the wires.

Three Pin Connector from

 

Half/Full Batch Switch

 

To Three Pin Female

Connector on Main

Harness

 

BLK to Swing Arm

Switch Lead

WHI to RED Pump

Lead

 

EARLY MODELS

P1751

FIG. 28 TIMER TERMINALS

 

Page 28

10067.3 070102

 

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Contents Bunn Srua Post Office BOX SPRINGFIELD, IllinoisBUNN-O-MATIC Commercial Product Warranty IntroductionUser Notices Electrical Requirements Electrical Installation InstructionsPlumbing Requirements Initial Setup Plumbing Hook-upAdjusting Brew Volumes Coffee Brewing CleaningFilter Holder Problem Probable Cause TroubleshootingRemedy Brew cycle will not start Tank not filling ProblemDirection of flow arrow must be pointing towards brewer Problem Probable Cause Remedy Refer to Service Solenoid Valve for testing procedures. See Pump tubingFunnel overflows Filters StructedRemove and clean lime off the tank heater. See Coffee reservoir overflows Brewer is making unusal noisesService Component AccessContactor LocationBLK Thermal Block L1 Fuse to Tank Heater RED Thermal Fuse 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 Disconnect all wires on the ON/OFF switch ON/OFF SwitchRED to Start Switch, Brew 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.
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