Dayton Operating Instructions and Parts Manual

3VG79A

Dayton® Portable

Oil-Fired Heater

Maintenance

Never service heater while it is

plugged in, operating, or hot. Severe burns and electrical shock can occur.

UPPER SHELL REMOVAL

1.Remove screws along each side and top of heater using 5/16" nut-driver. These screws attach upper and lower shells together (See Figure 6).

2.Lift upper shell off.

3.Remove fan guard.

Upper

Shell Screw

Fan

Guard

5.Dry fan thoroughly.

6.Replace fan on motor shaft. Place fan hub flush with end of motor shaft (See Figure 7).

Fan

Motor

Flush

Motor

Shaft

Setscrew

Figure 7 - Fan Cross Section

7.Place setscrew on flat of shaft. Tighten setscrew firmly (40-50 inch-pounds).

8.Replace fan guard and upper shell.

Air Intake Filter

Filter End Cover

Fan Guard

Lint Filter

Air Output

Filter

Figure 8 - Air Output, Air Intake, and Lint

Filters

PUMP PRESSURE ADJUSTMENT

1. Remove pressure gauge plug from filter

end cover (See Figur e 9).

2. Install accessory pressure gauge (Part

Number HA1180) (See Figure 10, page 7).

3. Start heater (See Operation, page 5).

Allow motor to reach full speed.

4. Adjust pressure to 6.0 psi. Turn relief

valve to right to increase pressure. Turn

relief valve to left to decrease pressure

(See Figure 10, page 7).

5. Stop heater. Remove pressure gauge.

Figure 6 - Upper Shell Removal

FAN

IMPORTANT: Remove fan from motor shaft before removing motor from heater. The weight of the motor resting on the fan could damage the fan pitch.

1.Remove upper shell ( See Figur e 6).

2.Use 1/8" Allen wrench to loosen setscrew which holds fan to motor shaft.

3.Slip fan off motor shaft.

4.Clean fan using soft cloth moistened with Kerosene or solvent.

AIR OUTPUT, AIR INTAKE, AND LINT FILTERS

1.Remove upper shell ( See Figur e 6).

2.Remove filter end cover screws using 5/16" nut-driver (See Figur e 8).

3.Remove filter end cover.

4.Replace air output and lint filters.

5.Wash or replace air intake filter (See Preventative Maintenance Schedule, page 9).

6.Replace filter end cover.

7.Replace fan guard and upper shell.

IMPORTANT: Do not oil filters.

Replace pressure gauge plug in filter

end cover.

Relief Valve

Pressure

Gauge Plug

Figure 9 - Pressure Gauge Plug Removal

6

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Dayton 3VG79A Maintenance, Upper Shell Removal, Pump Pressure Adjustment, Fan, AIR OUTPUT, AIR INTAKE, and Lint Filters

3VG79A specifications

The Dayton 3VG79A is a versatile and high-performance variable speed air ventilator that is designed to enhance air quality while providing optimal energy efficiency. Known for its robust build and innovative technology, the 3VG79A is particularly suitable for a wide range of commercial and industrial applications.

One of the standout features of the Dayton 3VG79A is its variable speed motor. This technology allows users to adjust airflow based on specific requirements, ensuring that energy consumption is minimized while maintaining desired ventilation levels. The ability to modify speeds not only contributes to energy savings but also enhances the overall comfort of any environment by providing just the right amount of ventilation when needed.

The Dayton 3VG79A is equipped with a durable construction that includes corrosion-resistant materials, making it suitable for use in a variety of settings where durability is crucial. Whether installed in a warehouse, factory, or commercial building, the ventilator is built to withstand challenging conditions over time.

In terms of performance, the Dayton 3VG79A delivers impressive air-moving ability, with a maximum airflow rate that meets the demands of even the most air-intensive environments. This capability ensures that spaces remain well-ventilated, preventing stale air buildup and promoting a healthier indoor atmosphere.

The 3VG79A also features an integrated control system, allowing for easy monitoring and adjustments. Users can effortlessly switch between automated settings or manual control, providing flexibility and convenience. Advanced safety mechanisms are also in place, including overcurrent protection, to ensure reliable operation.

Another key characteristic of the Dayton 3VG79A is its relatively low noise level. Despite its powerful performance, the commitment to quieter operation allows it to be used in sensitive environments, where excessive noise could be disruptive.

In summary, the Dayton 3VG79A stands out due to its variable speed motor, durable construction, high airflow performance, user-friendly control system, and low noise level. These features make it an excellent choice for businesses seeking an efficient, reliable, and versatile ventilation solution, ultimately improving air quality and energy efficiency for various applications.