Valve-Down Section - Vertical Express I-2 Manual

Final Adjustments
Valve-Up Section
(continued)

Valve-Down Section

14
Up Stop and Up Start
The up stop adjustment must be adjusted first because it affects the up start adjustment.
1. Adjust the up stop for a soft but positive stop.
2. Adjust the up start for a smooth but positive start.
3. Verify that full up speed is reached on a one-floor run, which may require the up start
to be more positive.
4. Slightly adjust the slowdown to achieve optimum performance, if necessary.
Up Stop
IN (CW) Stop Softer
Start Firmer
Lowering Speed
If no speed change occurs with one full turn on the lowering speed adjuster, do
not continue to turn it out. Check for a stop open wider than a start, or a mechan-
ical piston binding.
1. Place the car on Automatic Operation.
2. Set the lowering speed.
a. Use an empty car, and turn the lowering speed adjustment in one-half
turn increments.
b. After each adjustment, leave the flat end of the screw pointed 45° to the tank
return line.
Lowering Speed
One-half Turn Increments
OUT
(CCW)
Increase Lowering Speed
Up Start
Start Smoother
Limit High Speed
I-2 / I-3 Valve
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