Greenheck Fan ERVe Routine Maintenance, Maintenance Procedures Lubrication, Fan Belts, Fan Motors

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Belt Span
Deflection = Belt Span 64

Routine Maintenance

Danger

Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit to OFF at disconnect switch(es). Unit may have multiple power supplies.

CAUTION

Use caution when removing access panels or other unit components, especially while standing on a ladder or other potentially unsteady base. Access panels and unit components can be heavy and serious injury may occur.

Once the unit has been put into operation, a routine maintenance program should be set up to preserve reliability and performance. Items to be included in this program are:

Lubrication

Apply lubrication where required

Dampers

Check for unobstructed operation

Fan Belts

Check for wear, tension, alignment

Motors

Check for cleanliness

Blower Wheel & Fasteners

Check for cleanliness

Check all fasteners for tightness

Check for fatigue, corrosion, wear

Bearings

Check for cleanliness

Check set screws for tightness

Lubricate as required

External Filter

Check for cleanliness - clean if required

Internal Filter

Check for cleanliness - replace if required

Door Seal

Check if intact and pliable

Energy Recovery Wheel

Check for cleanliness - clean if required Check belt for wear

Check pulley, bearings, and motor

Maintenance Procedures:

Lubrication

Check all moving components for proper lubrication. Apply lubrication where required. Any components showing excessive wear should be replaced to maintain the integrity of the unit and ensure proper operation.

Dampers

Check all dampers to ensure they open and close properly and without binding. Backdraft dampers can be checked by hand to determine if blades open and close freely. Apply power to motorized dampers to ensure the actuator opens and closes the damper as designed.

Fan Belts

Belts must be checked on a regular basis for wear, tension, alignment, and dirt accumulation. Premature or frequent belt failures can be caused by improper belt tension (either too loose or too tight) or misaligned sheaves. Abnormally high belt tension or drive misalignment will cause excessive bearing loads and may result in failure of the fan and/or motor bearings. Conversely, loose belts will cause squealing on start-up, excessive belt flutter, slippage, and overheated sheaves. Both loose and tight belts can cause fan vibration.

When replacing belts on multiple groove drives, all belts should be changed to provide uniform drive loading. Do not pry belts on or off the sheave. Loosen belt tension until belts can be removed by simply lifting the belts off the sheaves. After replacing belts, ensure that slack in each belt is on the same side of the drive. Belt dressing should never be used.

Do not install new belts on worn sheaves. If the sheaves have grooves worn in them, they must be replaced before new belts are installed.

The proper belt setting is the lowest tension at which the belts will not slip under peak load operation.

For initial tensioning, set the belt deflection at

1/64‑inch for each inch of belt span (measured half- way between sheave centers). For example, if the belt span is 64 inches, the belt deflection should be one inch (using

moderate thumb

pressure at mid-point of the drive). Check belt tension two times

during the first 24 hours of operation and periodically thereafter.

Fan Motors

Motor maintenance is generally limited to cleaning and lubrication. Cleaning should be limited to exterior surfaces only. Removing dust and grease buildup on the motor housing assists proper motor cooling. Never wash-down motor

with high pressure spray. Greasing of motors is only intended when fittings are provided. Many fractional motors are permanently lubricated for life and require no further lubrication.

Model ERVe Energy Recovery Unit 23

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Contents Model ERVe General Safety Information Installation, Operation and Maintenance ManualHandling Inspection and Maintenance during StorageReceiving UnpackingBasic Operation Table of ContentsSupplemental Installation Operation and Maintenance Manuals InstallationRecommended Roof Opening Roof Curb and Rail MountingLifting with a Crane Lifting with a ForkliftDuctwork Connections Curb Outside Dimensions and WeightsRoof Curb Mounting Rail Mounting / Layout Service ClearancesAccess Panel Description and Location Duct Dimensions Unit Size Dimensional DataElectrical Information Electric Heater Application/Operation Typical Control Center ComponentsDampers Unit AccessoriesOutdoor Air Weatherhood Exhaust WeatherhoodFrost Control Application/Operation Optional AccessoriesEnthalpy Sensor with Override Testing Temperature Sensor with OverrideEconomizer Application/Operation Modulating the WheelDrive Operation Variable Frequency Drives for Energy Recovery BlowersFactory Set Points 10 VDC Variable Frequency Drives for Energy Recovery WheelEconomizer Signal Source Transformer Typical Wiring DiagramCO2 Sensor Service OutletRotation Sensor Dirty Filter SensorDirty Filter Indicator power by others Remote Control Panel and Wiring SchematicsIndicator Lights powered by the ER Unit Day Timer or On/Off SwitchAmp Current Sensors analog or digital Temperature Sensors 1K Ohm RTDSensors Mounted by Factory Pressure Sensors analog or digitalGeneral Start-Up Information Pre Start-Up Checklist check as items areStart-Up Checklist Start-UpVariable Frequency Drives section Optional Accessories ChecklistOptional Accessories section Economizer Application / Operation sectionUnit Start-Up Air Seals Energy Recovery WheelVibration Drive BeltFan Motors Routine MaintenanceMaintenance Procedures Lubrication Fan BeltsFan Wheel & Fasteners External Filter MaintenanceInternal Filter Maintenance Door Seal MaintenanceEnergy Recovery Wheel Maintenance Sequence of Operation Parts ListTroubleshooting Airflow Symptom Possible Cause Corrective Action Troubleshooting UnitTroubleshooting Unit Maintenance Log Model ERVe Energy Recovery Unit Warranty

ERVe specifications

The Greenheck Fan ERVe series stands at the forefront of energy-efficient ventilation solutions, specifically designed to meet the growing demands for energy conservation and enhanced indoor air quality in commercial buildings. As part of Greenheck's commitment to innovation, the ERVe series offers a variety of models tailored to diverse applications, including schools, hospitals, and office buildings.

One of the key features of the ERVe series is its advanced energy recovery technology. The ERVe utilizes a heat recovery wheel that efficiently transfers heat and moisture between the exhaust and incoming airstreams. This process significantly reduces heating and cooling loads on HVAC systems, promoting energy savings and improving overall system efficiency. By reclaiming energy that would otherwise be wasted, the ERVe ensures that buildings not only conform to energy codes but also contribute to sustainability goals.

The ERVe series is designed with versatility in mind. It offers multiple configurations, including vertical and horizontal orientations, which makes it adaptable to various installation environments. Additionally, the unit can be equipped with a range of options such as pre-filters, post-filters, and variable speed drive motors, allowing for customization based on specific application needs. This adaptability ensures that the ERVe can meet the specific air quality requirements of different spaces while maintaining optimal airflow.

Another significant characteristic of the ERVe series is its low noise operation. The design incorporates advanced acoustical features, including sound attenuators and insulated panels, which minimize sound transmission and enhance occupant comfort. As noise control becomes increasingly important in settings like educational institutions and healthcare facilities, the ERVe series excels in providing a peaceful indoor environment.

Moreover, the ERVe series is engineered with durability in mind. Constructed from high-quality materials, the units are built to withstand the rigors of continuous operation. The robust design not only extends the service life of the equipment but also reduces maintenance requirements, leading to lower overall operational costs.

In terms of control and monitoring, the ERVe series is compatible with various building management systems, allowing for integration into sophisticated HVAC controls. This feature enables real-time data tracking and optimization, enhancing the efficiency of indoor climate management.

Overall, the Greenheck Fan ERVe series represents a significant advancement in ventilation technology, combining energy efficiency, customizable features, low noise operation, and durability. These characteristics ensure that the ERVe is a reliable choice for modern commercial buildings striving for improved air quality and reduced energy consumption.
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