SERVICE (cont.)

Tank Heater

FIG. 23 TANK HEATER

P1715

 

Location:

The tank heater is located in the bottom of the tank assembly, FIG. 23.

Test Procedure:

1.Check the voltage across the black and white or red wires on the tank heater with a voltmeter when the control thermostat is turned “ON” (fully clockwise). Connect the brewer to the power source. The indication must be:

a)120 volts ac for two wire 120 volt models.

b)200 or 240 volts ac for two wire 200 volt or 240 volt models and three wire 120/240 volt models.

c)100 volts ac for two wire 100 volt models.

2.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #3.

If voltage is not present as described, refer to the Wir- ing Diagrams and check the brewer wiring harness.

3.Check for continuity across the terminals of the tank heater.

If continuity is present as described, reconnect the wires, the tank heater is operating properly.

If continuity is not present as described, replace the tank heater.

NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath.

Removal and Replacement:

1.Disconnect the brewer from the power source.

2.Remove the top cover or top warmer housing and the rear access panel.

3.Disconnect the wires to the tank heater.

4.Gently pull the thermostat bulb with grommet out of the tank lid.

5.Disconnect and remove the fill basin tube.

6.Remove the four #8-32 nuts and hold-down brack- ets attaching the tank lid to the tank assembly and remove the tank lid and gasket.

7.Drain the water from the tank using a syphon or similar device.

8.Remove the two nuts securing the tank heater to the bottom of the tank and remove the tank heater.

9.Install a new tank heater with new washers and secure with two nuts. Nuts should be securely tightened to insure a proper seal.

10.Install the tank lid and gasket using the four hold- down brackets and #8-32 nuts.

11.Install the fill basin tube and tighten the nuts se- curely.

12.Slide the grommet to the red mark on the capillary tube.

13.Carefully bend the capillary tube so that the tube and bulb inside the tank are in a vertical posi- tion.

14.Insert the bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid.

15.Refer to FIG. 24 when reconnecting the wires.

16.Refer to Initial Setup to refill the tank.

WHI (Models OL15 & 20) to Terminal Block

RED (Models OL35 & RL35) to Terminal Block

BLK to Control Thermostat

P1716

FIG. 24 TANK HEATER WIRING

Page 23

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Bunn RL00006929 service manual Service Tank Heater
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RL00006929 specifications

The Bunn RL00006929 is a commercial-grade coffee brewer that exemplifies innovation, efficiency, and durability, making it a preferred choice for coffee shops, restaurants, and large offices. This model is designed to meet high-volume demands while ensuring consistent quality and flavor in every cup.

One of the most notable features of the Bunn RL00006929 is its capacity to brew up to 3.8 gallons of coffee per hour. This remarkable output is facilitated by its dual-funnel design, which allows for simultaneous brewing, reducing wait times and enhancing service speed. The brewer is equipped with a precise temperature control system, ensuring that water is heated to the optimal brewing temperature of 200°F. This consistency in temperature plays a crucial role in extracting the full flavor profile from coffee grounds.

In terms of design, the Bunn RL00006929 boasts a compact footprint, making it suitable for various settings, including kitchens with limited space. The unit features a stainless steel construction, which not only provides a sleek appearance but also contributes to its durability and resistance to corrosion. Additionally, the easy-access design makes maintenance straightforward, allowing operators to clean and service the unit with minimal effort.

The RL00006929 incorporates advanced technologies that enhance its functionality. For instance, the machine features a digital control panel that provides real-time feedback on brewing status, water temperature, and other critical parameters. This intelligent system allows operators to make quick adjustments and ensures that brewing conditions are always optimal.

Another standout characteristic is the integrated brew basket that holds filters securely in place, preventing spills and ensuring a smooth brewing process. This feature minimizes mess and simplifies the coffee-making process, making it user-friendly for both experienced baristas and novice operators.

In summary, the Bunn RL00006929 stands out for its high brewing capacity, precise temperature control, compact design, and user-friendly features. Its combination of advanced technology and durability makes it an excellent investment for any establishment that demands quality coffee at high volumes. With Bunn's reputation for excellence, the RL00006929 is a reliable choice for delivering exceptional coffee experiences.
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