Component Installation Requirements
30 CLCH-SVX010A-EN
Fan Isolation
If the fan-and-motor assembly is 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 bolts are bolted adjacent to the
isolators between the fan isolation base and the isolator
support frame. The shipping tie-downs secure the
isolation base to the support assembly to prevent any
damage to the fan section during shipment.
Note: Remove the tie-downs only if the factory-provided
isolation is to be used.
Adjusting the Isolators
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.
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 31.
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
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.
Once the shipping tie-downs are removed and the internal
isolation is released, it may be necessary to adjust the
isolators to achieve the proper operation height of the fan
and motor isolation base.
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures
recommended in this manual could result in exposure
to electrical, mechanical or other potential safety
hazards. Always refer to the safety warnings provided
throughout this manual concerning these procedures.
Unless specified otherwise, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks. Failure to
follow all of the recommended safety warnings
provided, could result in death or serious injury.
Figure 31. Isolator
Shipping
tie-down
block (shim)
Jam nut
Adjusting nut
Fan base
Shipping bolt
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