Measuring The Rail - Harmar Mobility Vantage SL400 Installation And Service Manual

MEASURING THE RAIL

1. Measure from the nose of the top step to the point
on the landing where the rail will rest [Figure 7-1].
Enter this measurement into BOX 1 of the Rail Length
Worksheet below.
2. To figure the overall length of the rail you must
know the flight angle of your stairway. Measure your
rise and run as shown in Figure 7-2. Use the chart on
page 8 and its key to figure the flight angle and the
corresponding overrun. Enter the overrun into BOX 2
of the Rail Length Worksheet below
RISE
RUN
3. Add BOX 1 and BOX 2. Enter the value into BOX 3.
This is the overall length of the rail.
Rail Length Worksheet
TEC0017 23Jan2015 P/N: 630-00027-01 revC
PREPARATION - MEASURING THE RAIL
RISE
RUN
BOX 1
BOX 2
BOX 3
Vantage Stair Lift
NOTE: Seat Height Compensation
The Rail length shown in BOX 3 of the Rail
•
Length Worksheet will position the footrest
level with the upper floor.
The seat height will be 18 inches. To raise the
•
seat height, additional rail length must be
added.
The length shown in the Overrun to Raise
•
Seat column of the Rise and Run Chart Key is
the length of rail that must be added for each
additional inch of seat height.
The maximum allowable overrun is 12 inches.
•
SL400 • Vantage Stair Lift Installation Manual
Figure 7-1
RISE
Figure 7-2
RUN
7