Chapter 5 - Repairs & Replacements

Potentiometer,

Calibration

P/N 853397

The potentiometer operates the calibration needle in the oxygen concentration meter, and is located behind the calibration knob.

CAUTION: Before proceeding, make sure the unit is Off, and the electric power cord un-plugged.

Tools and Supplies Required

„Flat-blade screwdriver

„Small flat-blade screwdriver

„1/2-in. wrench

„Utility knife or small wire cutter

„Small wire tie

Potentiometer

Wire Tie

Oxygen

Conc.

Meter

Terminal 2

Terminal 1

Figure 108. Rear View of Calibration Potentiometer

Lock Nut

Potentiometer Stem

Figure 109. Calibration Potentiometer Lock Nut (Knob Removed)

Removal

1.Make sure that the main on/off switch is Off and the amber light in the switch is out.

2.Unplug the power cord from the electrical outlet.

3.Open the electronics compartment (refer to Page 57).

Note: Terminal numbers are displayed on the rear of the oxygen concentration meter by molded-on, raised numbers.Also, a label showing terminal numbers is affixed to the top of the body of the meter.

4.Two wires lead from the potentiometer to Terminals 1 and 2 on the oxygen concen- tration meter (Figure 108). Dis-connect both wires from the meter. Do not disturb the other wires on the terminals.

5.Cut and remove the wire tie holding the two wires to the wire bundle going to the meter.

6.With a small flat-blade screwdriver, loosen the lock screw on the side of the knob (Figure 107).

96

SSCI - Suburban Surgical Company, Inc.

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Page 108
Image 108
Suburban Mfg 12019-01-NGFREP manual Potentiometer Calibration, Rear View of Calibration Potentiometer
Page 107 Page 109

12019-01-NGFREP specifications

Suburban Mfg 12019-01-NGFREP is a well-regarded water heater that stands out in the market for its reliability and efficiency. Designed with the modern consumer in mind, it caters effectively to both residential and light commercial applications. This water heater is particularly recognized for its robust construction, versatile installation options, and advanced technological features.

One of the key attributes of the Suburban Mfg 12019-01-NGFREP is its high-efficiency operation. It is equipped with a state-of-the-art heating system that maximizes energy utilization while minimizing waste. This efficiency not only contributes to cost savings in utility bills but also supports environmentally friendly practices by reducing carbon footprints. The water heater operates with a powerful 6-gallon capacity tank, ensuring that households have a steady and ample supply of hot water.

Another main feature contributing to its popularity is the dual-fuel technology. This model can operate on both electric and gas power sources, providing flexibility to users in selecting their preferred energy type. This attribute is especially beneficial in areas prone to power outages or where energy prices fluctuate.

The design of the Suburban 12019-01-NGFREP also reflects user convenience. It is compact and lightweight, which simplifies the installation process, allowing it to fit into tight spaces, making it an ideal solution for mobile homes, RVs, or smaller residential units. The unit is also built with durable materials, protecting it against corrosion and wear over time, thus enhancing its longevity and performance.

Another significant aspect of the Suburban Mfg water heater is its safety features. It comes equipped with an automatic shut-off valve that activates in case of overheating, ensuring protection for both the unit and the occupants. Additionally, it incorporates pressure relief mechanisms to further enhance safety, making it a dependable choice for consumers.

Moreover, the unit’s ease of maintenance is a valued characteristic. It provides accessible design elements that simplify routine checks and repairs, saving users time and effort when servicing the water heater.

In summary, Suburban Mfg 12019-01-NGFREP is a versatile, efficient, and reliable water heater that is tailored to meet modern demands. Its combination of dual-fuel operation, high energy efficiency, compact design, and safety features makes it a smart investment for households seeking comfort and performance in their water heating solutions.
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