Troubleshooting Airflow, Design Airflow

Troubleshooting – Airflow

The Test and Balance Report (TAB) is utilized to determine whether the appropriate amount of outdoor air and exhaust air is being supplied and removed from a building, respectively. There are no set rules on what information must be included in a TAB report. As such, if a TAB report indicates that the airflow on a unit is low, prior to contacting the factory, please determine the following information:

Unit #1

Unit #2

Unit #3

Unit #4

Model Number

Serial Number

Nameplate Information

Voltage

Hertz

Phase

Outdoor Air Fan Amps

Outdoor Air Fan Horsepower

Design Airflow

Outdoor Air

Measured Airflow

Outdoor Air

Measured Data

Blower Rotation

Outdoor Air Fan RPM

Outdoor Air Fan Amp Draw

Airflow problems can often be tied back to improper ductwork installation. Be sure to install ductwork in accordance with SMACNA and AMCA guidelines.

Troubleshooting – Unit

Symptom	Possible Cause	Corrective Action

	Blown fuse or open circuit breaker.	Replace fuse or reset circuit breaker and check amps.

	Defective motor or capacitor.	Replace.

Blower fails to	Motor starter overloaded.	Reset starter and check amps.
Blower fails to
operate	Electrical.	Check for On/Off switches. Check for correct supply
	Electrical.	voltage.
		voltage.

	Drive.	Check for broken or loose belts. Tighten loose
	Drive.	pulleys.
		pulleys.

		Shorten wiring run to mechanical room or install a
	Control power (24 VAC) wiring run is too long	relay which will turn unit on/off. Consult Factory for
Motor starters	(resistance should not exceed 0.75 ohms).	relay information. Increase wire gauge size so that
Motor starters		resistance is .075 ohms or less.
“chatter” or
“chatter” or	Incoming supply power is less than anticipated.
do not pull in	Incoming supply power is less than anticipated.	Need to increase supply power or use a special
	Voltage supplied to starter coil must be within	Need to increase supply power or use a special
	Voltage supplied to starter coil must be within	control transformer which is sized for the actual
	+10% / -15% of nominal voltage stated on the	control transformer which is sized for the actual
	+10% / -15% of nominal voltage stated on the	supply power.
	coil.	supply power.
	coil.

Always have a completed Pre Start-Up Checklist and Unit Start-Up Checklist prior to requesting parts or service information.

Model ERCH-HP Energy Recovery Unit 29

473501 specifications

Greenheck Fan 473501 is a significant player in the world of ventilation solutions, specifically designed to meet the increasing demands for efficiency and effectiveness in air movement. This commercial-grade fan is particularly noted for its high performance and reliability, making it a top choice for various applications, ranging from industrial settings to larger commercial spaces.

One of the main features of the Greenheck 473501 is its energy-efficient design. It is engineered to minimize energy consumption while maximizing airflow, allowing users to achieve optimal performance without incurring high utility bills. The fan is equipped with a powerful motor that not only ensures consistent airflow but also contributes to its overall longevity and durability.

The fan boasts an impressive air performance rating, which is crucial for environments that require precise temperature and humidity control. With adjustable airflow settings, users can customize the fan’s operation to suit specific needs, whether that means circulating air in a warehouse or exhaust in a manufacturing facility.

Another standout characteristic is the fan's robust construction. Built with corrosion-resistant materials, the Greenheck 473501 is ideal for use in harsh environments, where exposure to moisture and other elements could compromise lesser fans. The design also incorporates noise-reducing technologies, making it suitable for settings where quiet operation is essential, such as schools, hospitals, and office buildings.

In terms of installation, the Greenheck 473501 is designed for versatility. It can be easily integrated into various ventilation systems, whether for new constructions or upgrades to existing infrastructure. Its compact footprint allows for convenient placement without sacrificing performance.

Furthermore, Greenheck offers extensive support and resources for this model, ensuring users have access to the information necessary for optimal operation, maintenance, and any potential troubleshooting.

Overall, the Greenheck Fan 473501 represents a harmonious blend of efficiency, durability, and flexibility, making it an ideal choice for those seeking a high-quality ventilation solution that meets contemporary environmental standards while delivering reliable performance across diverse applications.