MK Plastics Inline Fan IO&M - Manual (Page 3)

Floor Mounted Rubber-In-Shear Isolators
1. Mount fan on rail supports (if supplied).
2. Elevate fan to provide room to insert isolators between the fan base and supports and block in position.
3. Position isolators under fan and secure bolts.
4. Remove blocks and allow fan to rest on the isolators. Isolators must be installed on a level surface (leveling should not
be required).
5. Secure isolators to mounting surface.
Floor Mounted Spring Vibration Isolators (Refer to Fig. 3)
Fig. 3 – Spring Vibration Isolators (Assembly Detail - Typical)
1. Locate the isolators in their proper position under the fan. The equipment support should be flat and level. Shims, if
required, should be full size.
2. Before the isolators are adjusted, the weight of the fan will cause the top plate to come to rest on the housing. The
isolators should be adjusted to provide a minimum clearance of ¼” between the top plate and the housing.
3. Install the adjusting and leveling bolts through the equipment mounting holes until the bolt comes into contact with the
spring cup. Back off the lock nut and compress the springs by turning the adjusting bolt clockwise. Start at one isolator
and make four turns on the adjusting bolt, move to the next isolator and make four turns, etc., until all isolators have
been adjusted four turns. Repeat this procedure until a ¼” clearance is obtained between top plate and housing.
4. Check the level of the fan. The fan may now be leveled by making small adjustments of individual isolators at the high
and low points. The sleeves of the fan and isolation damper should be in line.
5. After the fan is level, visually check each isolator to make sure spring coils are not closed solid and there is sufficient
clearance between the top plate and housing.
Spring Hanging Vibration Isolators (Refer to Fig. 4)
Fig. 4 – Spring Hanging Vibration Isolators (In-line fans - Typical)
3