Trane Performance Air Handlers Manual de instalación descargar pdf (Pagina 48)

100

48 CAH-SVX01B-EN

Installation - Mechanical

Fans

The fan and motor assembly are internally isolated. The fan and motor bases are bolted to a

minimum of four spring isolators. The isolators are secured to the fan section support base.

Shipping tie-down blocks are bolted to the isolators between the fan base and the isolator support

frame.

To activate the isolation, remove the shipping tie-down blocks. Retain these blocks for use in

adjusting isolators if necessary.

Isolator Adjustment

Note: Isolators are pre-adjusted and set at the factory. Follow this procedure only if necessary and

as it applies to the isolators used in this unit. This procedure can and should be performed

by one person to ensure that the proper sequence is followed.

5. This procedure will raise the equipment load until the isolators are all off the shims (shipping

tie-down blocks) approximately 1/32-inch (the thickness of a credit card), and the internal gap

is approximately equal to the external gap.

Note: Do not adjust isolators once the fan base is off of the shipping tie down blocks.

6. Continue adjusting other isolators in sequence and repeat the same adjustment. Continue until

all isolators are adjusted.

7. Replace the jam nut on each isolator adjusting bolt, tighten the nut, and remove the shipping

tie down block.

Figure 43. Isolator

Isolators are selected for distribution of equipment weight,

but may not all compress the same. This procedure

assumes the base surface is level. Isolators are not

intended to be leveling devices.

1 Verify that the shipping bolts that hold the fan base in

a fixed position have been removed. See Figure 43.

2. Remove the jam nut on top of the isolator adjusting stud

at the first isolator to be adjusted. Check that the

shipping block is in place.

3. Turn the adjusting nut two or three turns only,

counterclockwise on each isolator in a sequenced

manner. The equipment weight will compress the

spring inside the housing approximately

1/4 inch.

4. Check that the bushing on the isolator stud is centered

in the isolator. Adjust to center by moving the stud in

the fan base hole.

Jam

nut

Shipping

bolt

Fan

base

Shipping

tie-down

block (shim)

Adjusting

nut

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