Unit start-up, Fans Forward Curved Type | Greenheck Fan HRE-20, 90

unit start-up

Refer to Parts List section for component locations.

Fans (Forward Curved Type)

The HRE Models contain a forward curved supply fan and a forward curved exhaust fan.. These forward curved fans should be checked for free rotation.. If any binding occurs, check for concealed damage and foreign objects in the fan housing.. Be sure to check the belt drives per the start-up recommendations in the following section..

Fan Performance Modifications

Due to job specification revisions, it may be necessary to adjust or change the sheave or pulley to obtain the desired airflow at the time of installation.. Start-up technician must check blower amperage to ensure that the amperage listed on the motor nameplate is not exceeded.. Amperage to be tested with access doors closed and ductwork installed..

Safety Caution!

When operating conditions of the fan are to be changed (speed, pressure, temperature, etc..), consult Greenheck to determine if the unit can operate safely at the new conditions..

Fan Belt Drives

The fan belt drive components, when supplied by Greenheck, have been carefully selected for the unit’s specific operating condition. Caution: utilizing different components than those supplied could result in unsafe operating conditions which may cause personal injury or failure of the following components: 1) Fan Shaft, 2) Fan Wheel, 3) Bearings, 4) Belt, 5) Motor.. Tighten all fasteners and set screws securely and realign drive pulleys after adjustment.. Check pulleys and belts for proper alignment to avoid unnecessary belt wear, noise, vibration and power loss.. Motor and drive shafts must be parallel and pulleys in line (see below)..

Belt Drive Installation

1.Remove the protective coating from the end of the fan shaft and assure that it is free of nicks and burrs..

2. Check fan and motor shafts for parallel and angular alignment..

3.Slide sheaves on shafts - do not drive sheaves on as this may result in bearing damage..

4.Align fan and motor sheaves with a straight-edge or string and

tighten..

5.Place belts over sheaves.. Do not pry or force belts, as this could result in damage to the cords in the belts..

6..With the fan off, adjust the belt tension by moving the motor base.. (See belt tensioning procedures in the Routine Maintenance section of this manual).. When in operation, the tight side of the belts should be in a straight line from sheave to sheave with a slight bow on the slack side..

WRONG

CORRECT

Proper alignment of motor and drive shaft.

45, 55, 90, HRE-20 specifications

The Greenheck Fan HRE series, specifically the models HRE-20, HRE-90, HRE-55, and HRE-45, represents a blend of innovation and efficiency in the HVAC industry. Built for both commercial and industrial applications, these exhaust fans stand out due to their robust design and advanced operational features.

One of the main features of the HRE series is its energy-efficient motor design. These fans come equipped with a premium efficiency motor that reduces energy consumption while maintaining high performance. The motors are specifically designed to provide exceptional airflow while operating at lower sound levels, ensuring a quieter environment.

The HRE models also showcase advanced aerodynamic design, featuring optimized blade geometry that enhances airflow performance. This design ensures that the fans can deliver consistent and effective air movement even at varying operational conditions. This makes the HRE series suitable for use in a wide range of applications, from commercial kitchens to industrial processes.

Another significant characteristic of the HRE series is its durability. Constructed from high-quality materials, these fans are built to withstand harsh environmental conditions and prolonged usage. The robust casing and corrosion-resistant finishes ensure longevity, reducing the need for frequent repairs or replacements.

In terms of installation and maintenance, the HRE series offers significant advantages. The fans are designed for easy installation with clear mounting instructions. Additionally, maintenance procedures are simplified, allowing for hassle-free access to critical components, which reduces downtime and operating costs.

Technologically, the HRE models incorporate advanced controls and monitoring systems. These systems can offer real-time feedback on operational performance, allowing for proactive maintenance and energy management. Integrated controls can be customized to work with building management systems, providing users with seamless integration and control capabilities.

Overall, the Greenheck Fan HRE-20, HRE-90, HRE-55, and HRE-45 exemplify a commitment to quality and efficiency in commercial and industrial ventilation solutions. Their combination of energy efficiency, advanced design, durability, and user-friendly features make them a leading choice for those seeking reliable airflow solutions. These fans not only meet current industry standards but also set a benchmark for performance and innovation in the HVAC sector.