4
frame and the feet at each corner. With the component loaded on the isolation base,
check each corner individually by pressing down firmly on each corner. An
isolation base with SF and LF feet should be compliant at each corner location and
not feel rigid. If there is displacement at each corner then the isolation base is
working as designed. If there is no compliance at one or more corners then the load
range should be changed by HRS to the proper load range. HRS can modify the E1
Isolation Base load range as many times as needed for a fraction of the original
purchase price. Overloading the isolation base for an extended period of time may
reduce its service life and voids the warranty.
The HRS G7 feet (pictured below) will not have any compliance and so they should
not react when you press down on the corner of the base. Instead, check that all four
feet are in direct intimate contact with the surface the isolation base is resting on by
pressing down firmly at each corner and observing if the isolation base rocks up
and down. If any rocking motion occurs, adjust the G7 foot at the rocking corner
by turning it counter-clockwise (as viewed from below base frame)
1
/
8
of a rotation
at a time until it no longer rocks under pressure. Always maintain at least three full
rotations of thread engagement on each G7 foot. Optimal performance will be
achieved when at least three G7 footers are threaded fully into the frame and only
one foot is adjusted to prevent rocking. The G7 feet are not designed to level the
base frame. Leveling of the E1 Isolation Base is done by adjusting the HRS frame
or other supporting structure.
SF2 height: 1.300”
SF3 height: 1.300”
LF2 height: 1.475”
LF3 height: 1.475”
G7 Height 1.350”
Bottom SF2 / LF2
Bottom SF3 / LF3
Bottom G7
Note: The listed heights above are from bottom to top of outer metal housing only
(not to the top of isolators, shims, or threads)
