Greenheck Fan 90, HRE-20, 55, 45 Bearings, External Filter Maintenance, Internal Filter Maintenance

Page 37

routine maintenance

Bearings

Most bearings are permanently lubricated and require not further lubrication under normal use. Normal use being considered -20ºF to 120ºF and in a relatively clean environment.. Some bearings are re-lubricatable and will need to be regreased depending on fan use.. Check your bearings for grease zert to find out what type of bearing you have.. If your fan is not being operated under normal use, bearings should be checked monthly for lubrication..

External Filter Maintenance

Aluminum mesh, 2-inch deep filters are located in the supply weatherhood (if the weatherhood option was purchased).. Filters should be checked and cleaned on a regular basis for best efficiency.. The frequency of cleaning depends upon the cleanliness of the incoming air.. These filters should be cleaned prior to start-up..

To access these filters, remove bottom bolt in the access door on the side of the weatherhood.. Slide the access door up and then pull bottom out to remove door.. Then, slide the filters out (see figure at right)..

Clean filters by rinsing with a mild detergent in warm water..

Internal Filter Maintenance

The HRE units will typically be provided with 2‑inch, pleated filters in the outdoor air and exhaust airstreams.. These filters should be checked per a routine maintenance schedule and replaced as necessary to ensure proper airflow through the unit.. See table at right for pleated filter size and quantity for each unit.. Replacement filters shall be of same performance and quality as factory installed filters.. Filter type must be

pleated design with integral metal grid.. Two acceptable filter replacements are Aerostar Series 400 or Farr 30/30®..

Outdoor Air Filters: Access to the outdoor air filters is through the door labeled as “Filter Access” on the outdoor air side of the unit..

Exhaust Air Filters: Access to the exhaust air filters is through the door labeled as “Filter Access” on the exhaust air side of the unit..

Refer to Access Door Descriptions section for additional information on filter locations..

Door Seal Maintenance

Slip-on type vinyl seal is installed on the perimeter of the door openings.. Inspect at least annually to ensure that seal is still pliable and intact..

Outdoor air intake hood

mesh filter access

Filter Size and Quantities

Model

Internal

Quantity

Quantity

Filter Size

Supply

Exhaust

 

 

 

 

 

HRE-20

20 in.. x 20 in..

2

2

 

 

 

 

HRE-45

20 in.. x 25 in..

3

3

 

 

 

 

HRE-55

16 in.. x 25 in..

6

6

 

 

 

 

HRE-90

20 in.. x 20 in..

8

8

 

 

 

 

37

Page 36 Page 38
Image 37
Page 36 Page 38
Contents Indirect Evaporative Cooler Read and Save These INSTRUCTIONS461248Direct Evaporative Cooler Storage TABLE OF ContentsBasic Operation Safety Warning InstallationLifting Roof Curb Mounting Ductwork Connections Rail MountingSupply Weatherhood Exhaust WeatherhoodElectrical Information Exploded Detail Terminal Strip TYPICAL CONTROL CENTER COMPONENTSHRE-20 HRE-45 Service Clearances / access panel locationsHRE-55 HRE-90 Model Exterior Dimensions HRE-20 Dimensional Data / Access Door DescriptionsOverall Exterior Dimensions Model Dimensional dataStandard Trap and Supply Line Configuration Evap Module InstallationEvaporative Cooling Modules Evap Module START-UPHRE Water SUPPLY CONNECTION Location Water Flow Adjustment DevicePump and Float ComponentsTop View Trap & Supply Line Configuration with Auto Drain and Fill EvaporativeEvaporative FreezeTimer ProtectionWater Control Options for Evaporative Cooling Auto Drain and Fill with Freeze ProtectionDrain Trap Drain and Overflow Connection Locations Symptom Solution Troubleshooting for evaporative moduleEvaporative Cooling Maintenance Electric Heater Application/Operation Optional accessoriesElectric Preheater Post-Heater Control PanelTimer Frost Threshold TemperaturesTesting Frost Control Application/OperationModulating the Wheel Enthalpy Sensor With Override Economizer Application/OperationYaskawa Yaskawa E7 Variable Frequency Drives for BlowersFactory Setpoints Modulating Control 0-10 VDC for FAN Speed Variable Frequency Drives for Energy Recovery WheelTransformer Wiring DiagramDirty Filter Sensor Rotation SensorCO2 Sensor Service OutletVapor Tight Lights Remote Control Panel and Wiring Schematics Optional AccessoriesIndicator Lights powered by the ER Unit Remote Panel Wiring SchematicsHeating/Cooling Switches and Night Setback Switch/Timer Sensors Mounted by Factory Temperature Sensors 1K Ohm RTDSafety Danger Start-Up Checklist for unitSafety Caution Start-Up Checklist for Evaporative Cooler Start-Up ChecklistSpecial Tools Required Optional Accessories section Optional Accessories ChecklistEconomizer Application / Operation section Variable Frequency Drives sectionFans Forward Curved Type Unit start-upFan Performance Modifications Fan Belt DrivesFan RPM Direction of Fan Wheel RotationVibration Rotation DirectionAir Seals Drive BeltInside layout of HRE unit Date Routine maintenanceDampers LubricationFan Belts Fan MotorsInternal Filter Maintenance External Filter MaintenanceDoor Seal Maintenance BearingsAccess to wheel through Outdoor air filter door Energy Recovery Wheel MaintenanceWheel segment removed Wheel Bearing Wheel Belt & PulleyModel HRE Parts ListBasic Unit Sequence of OperationSummer Operation Winter OperationTest and Balance Report Pressure Drop Across Energy Recovery WheelDesign Airflow Measured AirflowSymptom Possible Cause Corrective Action TroubleshootingWarranty
Related manuals
Manual 24 pages 59.92 Kb

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.
Top Page Image Contents