SERVICE

TROUBLE ANALYSIS PROCEDURE

A multimeter is required for some of the following check-out procedures. Before performing any tests, make certain if the dryer power supply is 1 phase, 230 volt, or 3 phase, 230 or 460 volt.

•The burner circuit is 120 volts AC on all standard U. S. production models.

•The control circuit to the motor start- ers is 120 volts AC.

Problem

•The safety circuit is 12 volts D. C.

•When checking these circuits, mea- sure voltage between the circuit test locationandtoground.

•D. C. circuits should be measured

between the test location and its re- spective D. C. ground.

Refer to wiring diagrams and the parts list for identification of parts and the electrical terminals.

CAUTION: When making high voltage tests with "live" circuits, be extremely careful. Follow established safety prac- tices.Turnpoweronfortestingonly.Do not attempt to make the dryer operate by using a jumper wire to bypass a de- fectivesafetycomponent.

Possible Cause

Control power switch light off.

1.Check that main power and circuit breakers are turned on. Check for tripped breaker.

2.Check for blown 5 amp fuses.

3.Monitor relay is defective.

4.Defective transformer or wiring.

5.Check for a defective power switch.

6.Check wiring between fuses and input/output board. Refer to wiring diagram for test locations.

Control power light is on, reset button has been pressed,

1.

Power interruption: Incoming power to the dryer has

drying mode light off.

 

been interrupted. The display screen will show the date

 

 

and time if this has occured, once power has returned.

This indicates control power is present at input/output

2.

Display not finished initial setup: The monitor will

board, but no power is being transferred through the I/O

 

display a copyright message and model number, total

board.

 

running time in hours and minutes and then the current

 

 

date and time. To activate the controller press the reset

 

 

button.

 

3.

Input/output board: The input/output board has devel-

 

 

oped a problem that requires its replacement.

 

 

 

No display on LCD screen.

1.Check for a defective power switch.

2.Check wiring between fuses and input/output board.

3.Check for 120 volts A. C. between points J9-3 and AC-1.

4.The display may have a malfunction requiring its replacement.

Control power light is on, drying mode light is on--load

auger, fan, heater, unload auger will not operate.

1.Press the dryer power start button.

2.Refer to the problem listed for load auger, fan heater and unload auger in the following sections.

Display shows "L1 VOLTAGE LOST" message.

The left circuit breaker located on the input/output board of the Electronic Monitoring Control System has tripped, or one of the hardware timers on the Electronic Monitoring Control System has shut down the dryer.

Display shows "12 VOLT POWER SUPPLY WARNING"

message.

The right circuit breaker located on the input/output board of the Electronic Monitoring Control System has tripped.

46

Page 45 Page 47
Page 46
Image 46
Airstream PNEG-339 service manual Service, Trouble Analysis Procedure
Page 45 Page 47

PNEG-339 specifications

The Airstream PNEG-339 is a highly regarded model in the realm of agricultural storage and handling equipment, specifically designed for grain management. Its innovative features and robust technologies make it a valuable asset for farmers and grain handlers seeking efficiency and reliability.

One of the primary characteristics of the PNEG-339 is its seamless construction. Built with high-quality materials, the unit is engineered to withstand the rigors of outdoor environments while providing durable protection for stored grains. The design minimizes maintenance requirements, ensuring that users can focus on their core agricultural operations without the distraction of frequent repairs.

The PNEG-339 is equipped with advanced aeration systems that enhance the preservation of grain quality. This technology allows for optimal airflow circulation, reducing moisture levels and minimizing the risk of spoilage. By maintaining the ideal conditions for grain storage, farmers can ensure better yields and profitability.

Another notable feature of the PNEG-339 is its scalability. This model can easily be integrated into existing grain handling systems, accommodating various storage capacities. Whether managing small-scale operations or large agricultural enterprises, the PNEG-339 offers flexibility in design and implementation, making it suitable for diverse agricultural needs.

The unit also boasts user-friendly controls and monitoring systems, allowing operators to manage grain conditions efficiently. Real-time data and automated alerts assist in maintaining optimal storage conditions, thus reducing labor costs and enhancing operational efficiency. As a result, farmers can make informed decisions quickly and effectively.

Additionally, the PNEG-339 incorporates energy-efficient technologies that contribute to sustainability in agriculture. By utilizing energy-saving components, this model not only lowers operational costs but also aligns with the growing emphasis on environmentally responsible farming practices.

Overall, the Airstream PNEG-339 stands out as a top-tier choice for grain storage and handling. With its durable construction, advanced aeration systems, scalability, user-friendly controls, and energy efficiency, it meets the demands of modern agricultural operations. Its design and functionality reflect a commitment to quality and performance, making it an essential tool for those in the agricultural sector aiming to enhance their productivity and maintain the integrity of their grain stores.
Top Page Image Contents