I-2/I-3 Valve Reference - Vertical Express ICON 32 Product Manual

Reference Section

I-2/I-3 Valve Reference

The Slowdown and Floor Approach Chart (below) explains the effects of slowdown point and rate adjustments on
car stabilized leveling distances. These adjustments should be referenced as needed, specifically during final
valve adjustments or subsequent service calls.
UIT: Motion Quick CMD > Stabilized Leveling Readout
Top
Speed
Selector Slowdown Point
This figure shows the requirement of 3"-4" of leveling distance. If the car
slowdown and approach to the floor results in longer leveling than 3"-4",
car performance and fluid could degrade due to unnecessary fluid heating.
Top
Speed
(excessive leveling distance)
This figure shows the effect of using the P17/P18 Adjustments to control the leveling
distance. If the car slowdown and approach to the floor is comfortable as adjusted in
the valve but results in incorrect leveling distance (3"-4"), move the P17/P18
Selector Showdown Point properly.
Top
Speed
(excessive leveling distance)
This figure shows the effect of using the I-2/I-3 Valve Slowdown Screw Adjustments to control
the leveling distance. If the car showdown point P17/P18 is set but leveling is incorrect (not 3"-4"),
move the Valve Slowdown Screw.
• UP SLDN Screw: IN = Shorter leveling distance, increased leveling speed, softer feel to slowdown.
• DOWN SLDN Screw: OUT = Shorter leveling distance (with full load the distance is even shorter),
Vertical Express Product Manual
3"-4" of
stabilized leveling
P17/P18
Car Position
P17/P18
Selector Slowdown Points
P17/P18 too small
(no leveling distance,
P17/P18
too large
Car Position
P17/P18
Selector Slowdown Point
Valve Slowdown
too aggressive
Car Position
Set for at least 2" of leveling with a full load and increase P17
to help with full load down floor approach.
5R - 9
car re-levels)
3"-4" of
stabilized leveling
Valve Slowdown too soft
(no leveling distance,
car re-levels)
3"-4" of
stabilized leveling
I-2/I-3 Valve Reference
88500 v.1.0