3.
If the range is less than desired (i.e.
the actuator reaches its full travel in
less than the specified input range),
strengthen the
range spring
by
winding it counterclockwise onto
the
spring retainer
.
If the range is
greater than desired, weaken the
range spring
by winding it clock-
wise. Repeat adjustments until the
desired range provides full or zero
output pressure.
4.
If the desired range is not achieved
after making the above adjust-
ments, readjust the bias (per the
previous instructions) to allow
proper range adjustment.
5.
It may be necessary to change the
range
spring retainer
for some non-
standard ranges (refer to
Table 3
).
HPP-5
11
September 1999
Table 3
: Range Spring Retainer
Type
Typical Use
Short (01-2509 )
8” and 12” Stroke
Intermediate (11-2572 ) 6” Stroke
Long ( 01-2042 )
4” Stroke
HPP-5 Positioner
Range Adjustment
