Pre-Start-Up Checklist

oDisconnect and lock-out all power switches.

oRemove any foreign objects that are located in the energy recovery unit.

oCheck all fasteners, set-screws, and locking collars on the fans, bearings, drives, motor bases and accessories for tightness.

oRotate the fan wheels and energy recovery wheels by hand and ensure no parts are rubbing.

oCheck the fan belt drives for proper alignment and tension.

oFilters can load up with dirt during building construction. Replace any dirty pleated filters and clean the aluminum mesh filters in the intake hood.

oVerify that non-motorized dampers open and close properly.

oCheck the tightness of all factory wiring connections.

oVerify control wire gauge.

oVerify diameter seal settings on the energy recovery wheel.

oVerify proper drain trap installation.

oCheck condensing fans for any damage or misalignment. Spin the blades and make sure they don’t contact any parts and are free turning without any resistance.

oLook over the piping system. Inspect for oil at all tubing connections. Oil typically highlights a leak in the system.

oInspect all coils within the unit. Fins may get damaged in transit or during construction. Carefully straighten fins with a fin comb.

oIf there is an indirect gas-fired furnace in this unit, refer to the maual provided with this unit for Pre- Start-Up information.

oThis unit contains a crankcase heater for each compressor which needs power supplied to it

24 hours prior to start-up. If start-up is scheduled in 24 hours, unlock the disconnect power and energize unit.

SPECIAL TOOLS REQUIRED

•Voltage Meter (with wire probes)

•Amperage Meter

•Pressure Gauges – (refrigerant)

•Tachometer

•Thermometer

•Incline manometer or equivalent

Start-Up Procedure

The unit will be in operational mode during start-up. Use necessary precautions to avoid injury. All data must be collected while the unit is running. In order to measure volts and amps, the control center door must be open, and the unit energized using a crescent wrench to turn the disconnect handle.

oMake sure Pre-Start-Up checklist is complete.

oJumper R to G, R to Y1, and R to Y2 (if applicable) on the control board.

oTurn the disconnect on. After 3 minutes compressors will come on. Make sure all fans and compressors are rotating the correct direction.

oAllow the unit to run until the refrigerant system stabilizes. Approximately 1-2 minutes.

Voltage Imbalance

In a 3-phase system, excessive voltage imbalance between phases will cause motors to overheat and eventually fail. Maximum allowable imbalance is 2%. To determine voltage imbalance, use recorded voltage measurements in this formula.

Key:

V1, V2, V3 = line voltages as measured

 

VA (average) = (V1 + V2 + V3) / 3

 

VD = Line voltage (V1, V2 or V3) that

 

deviates farthest from average (VA)

Formula:

% Voltage Imbalance = [100 x (VA-VD)] /VA

Model ERCH-HP Energy Recovery Unit 13

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Greenheck Fan 473501 manual Pre-Start-Up Checklist, Start-Up Procedure, Voltage Imbalance
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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.
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