SERVICE PROCEDURES

Upper Shell Removal

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

2.Lift or slide upper shell off.

3.Remove fan guard.

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 above).

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

3.Slip fan off motor shaft. Be careful not to strike air sensing switch paddle or paddle arm (80,000 BTU/ Hr model only).

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

5.Dry fan thoroughly.

6.Replace fan on motor shaft. Make sure setscrew is touching back of flat surface on motor shaft (see Figure 10).

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

8.Replace fan guard and upper shell.

10

!WARNING

Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

Figure 6 - Upper Shell Removal,

Figure 7 - Upper Shell Removal,

80,000 BTU/Hr Model

 

150,000 BTU/Hr Model

80,000 BTU/Hr

Fan

Motor

 

 

 

Model Shown

 

 

Air Sensing Switch Paddle (80,000 BTU/Hr Model Only)

Paddle

Arm

Figure 8 - Fan Removal and Air Sensing

Switch Location

45/80 Models

LP-PFA/P 019B

Fan

Fan

Setscrew

 

 

Hub

 

 

 

 

Motor

 

 

 

Shaft

 

Motor shaft

 

Setscrew

 

 

 

FAN

LP-PFA/P 023

 

 

 

 

FAN CROSS SECTION

LP-PFA/P 013

Figure 9 - Fan, Motor Shaft,

Figure 10 - Fan Cross Section

and Setscrew Location

 

 

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Desa ROPANE CONSTRUCTION HEATERS owner manual Service Procedures, Upper Shell Removal, Fan

ROPANE CONSTRUCTION HEATERS specifications

Desa Ropane Construction Heaters are renowned for their efficiency and reliability in providing heat in various construction environments. These powerful heaters are specifically designed to meet the demands of the construction industry, where maintaining a suitable temperature is crucial for worker safety and the integrity of materials.

One of the main features of Desa Ropane heaters is their robust construction. Built to withstand the rigors of job sites, these heaters are made from durable materials that can resist wear and tear. This durability ensures that the heaters can operate in harsh conditions without compromising on performance.

Desa Ropane heaters utilize advanced infrared technology to produce heat. This technology allows for efficient heating, as infrared rays directly warm people and objects, rather than the air. This makes them especially effective in large, open spaces where conventional heating methods might struggle to maintain warmth. By focusing on direct heat transfer, these heaters minimize energy waste and reduce heating costs.

Another characteristic of Desa Ropane heaters is their user-friendly design. Many models come equipped with easy-to-use controls that allow operators to adjust the temperature settings quickly. This feature is particularly beneficial for construction workers who may need to respond rapidly to changing weather conditions. Additionally, several models feature built-in safety mechanisms, such as tip-over switches and overheat protection, ensuring safe operation even in the most challenging environments.

Portability is yet another strength of Desa Ropane heaters. Many models are lightweight and fitted with wheels, making it easy to move them around job sites as needed. This flexibility is invaluable in dynamic construction environments where heating requirements may change throughout the day.

Moreover, Desa Ropane heaters operate quietly, which is an essential feature for construction sites that may need to comply with noise regulations or where workers require a more peaceful working atmosphere.

In summary, Desa Ropane Construction Heaters are crafted with durability, efficiency, and user convenience in mind. With their infrared heating technology, built-in safety features, exceptional portability, and quiet operation, they are ideal solutions for meeting the heating needs in construction settings. Their reliable performance makes them a go-to choice for contractors and construction companies looking to ensure a warm and safe working environment during cold months.