Removing From Storage, Belts, Fasteners | Greenheck Fan LD AND LDP

Removing From Storage

As fans are removed from storage to be installed in their final location, they should be protected and maintained in a similar fashion until the fan equipment goes into operation.

Pre-Startup Checks

1.Check all fasteners for tightness. The wheel should rotate freely and be aligned as shown in Figure 1.

WHEEL OVERLAP AND GAP DIMENSIONS

Model	G - Overlap in. (mm)		H - Gap in. (mm)
LD/LDP 60-095		–	3⁄32 (2)
LD/LDP 100-120		–	1⁄4 (6)
LB/LBP 10-14	1⁄4 (6)		–
LB/LBP 18-24	3⁄8	(10)	–
LB/LBP 30-54	1⁄2	(13)	–
G			H
Figure 1

2.Wheel position is preset and the unit is test run at the factory. Movement may occur during shipment, and realignment may be necessary.

3.Centering can be accomplished by loosening the bolts holding the drive frame to the shock mounts and repositioning the drive frame.

4.Wheel and inlet cone overlap can be adjusted by loosening the setscrews in the wheel and moving the wheel to the desired position.

5.Check wheel rotation by momentarily energizing the unit. Rotation should be clockwise as shown in Figure 2 and correspond to the rotation decal on the unit. Rotation is determined when the unit is viewed from the motor or shaft pulley side.

Wheel Rotation

All Series L fans have clockwise (CW) wheel rotation when viewed from top of fan.

Figure 2

Pre-Starting Belt Tension Checks

6.Always loosen tension enough to install belt without stretching, see Figure 3.

BELTS

		Do not force belt(s). Forcing the
	Figure 3	belt(s) will break the cords and
	Figure 3	cause belt failure
		cause belt failure

7.If adjustments are made, it is very important to check the pulleys for proper alignment. Misaligned pulleys lead to excessive belt wear vibration, noise and power loss, see Figure 4.

Figure 4

8.Belt tension can be adjusted by loosening four fasteners (marked “R” in Figure 5) on the drive frame. This allows the motor plate to slide on the drive frame angles for proper positioning.

FASTENERS

*Identical fasteners on opposing side must also be loosened.

Figure 5

9.Belt tension should be adjusted to allow 1⁄64 in. (0.397 mm) of deflection per inch of belt span. For example, a 15 in. (381 mm) belt span should have 15⁄64 in. (0.234 mm) (or about 1⁄4 in. (6 mm)) of deflection with moderate thumb pressure at mid-point between pulleys, see Figure 6.

WARNING

kwise

The fan has been checked for mechanical noises at the factory prior to shipment. If mechanical noise should develop, suggested corrective actions are

WARNING

Correct direction of wheel rotation is critical. Reversed rotation will result in poor air performance, motor overloading and possible motor burnout.

4 Series L: Models LB, LBP, LD, and LDP

offered in the Troubleshooting section.

WARNING

Over tightening will cause excessive bearing wear and noise. Too little tension will cause slippage at startup and uneven wear.

LBP, LD AND LDP, Series L Models LB specifications

Greenheck's Fan Series L Models—LB, LD, LDP, and LBP—are engineered to provide efficient and reliable ventilation solutions for commercial and industrial applications. These fan models stand out due to their high-performance capabilities, advanced technology, and customizable features that meet various system requirements.

One of the key characteristics of the L Model series is its construction quality. These fans are built using robust materials that ensure longevity and durability, making them suitable for harsh operating environments. Additionally, the aerodynamic design of the fan blades enhances airflow while minimizing noise, leading to a quieter operation, which is particularly beneficial in places like schools, hospitals, and office buildings.

The LB series is particularly designed for general ventilation applications and incorporates a broad range of features. It includes a wide selection of fan sizes and capacities, allowing businesses to select the ideal model that suits their specific airflow and pressure needs. The inline belt drive setup is adjustable, offering flexibility in performance tuning based on application requirements.

For those with more stringent noise requirements, the LD model is specifically engineered for low-noise operations. The LD series incorporates acoustic materials and optimized blade designs that significantly reduce operational noise levels, making it perfect for noise-sensitive environments, such as healthcare facilities.

On the other hand, the LDP model emphasizes high-performance static efficiency. This model is particularly effective for applications requiring high pressure. With direct drive motors, the LDP fans deliver reliable performance with reduced maintenance needs. The design minimizes failure areas, making it a dependable choice over traditional belt-driven fans.

Lastly, the LBP fans are designed for building pressure applications, making them ideal for spaces that require controlled environments or negative and positive pressure situations. The robust motor options provided in this series enhance operational capabilities across various conditions.

All models in the Greenheck L Series come equipped with advanced technologies, including variable frequency drive (VFD) compatibility. This feature enables users to adjust fan speed based on changes in airflow requirements, further improving energy efficiency and reducing operating costs.

Overall, the Greenheck Fan Series L Models—LB, LD, LDP, and LBP—represent a culmination of advanced engineering and user-centric design, delivering superior performance, energy efficiency, and durability tailored to a wide range of ventilation needs across various industries.