Johnson Controls VA-8051 - Manual (Page 4)

4 VA-8051 Product Bulletin
8. Reverse the actuator and
drive it up until it stops on
the limit switch. Check to
make sure the gap between
the lever plate and the
molded upper stop is
1/16 in. (.047 to .093 in.).
Set with flat washer gage
supplied. (See Fig. 5).
Repeat steps 6, 7 and 8
until the gap falls into this
range when the actuator
stops.
9. With the valve driven fully
up to hold tension on the
stem and coupler, thread
the Palnut up the stem until
it contacts the coupler.
Tighten Palnut to coupler
with 1/2 in. and 7/16 in.
wrenches.
10. Secure the actuator in place
by tightening the spring
plate with a large
screwdriver.(See Fig. 3).
11. Drive the actuator fully up
and down at least three
complete cycles before
again checking that the
lever and its drive coupler
stop before contacting the
upper stop and the lower
end of the yoke casting.
! CAUTION: Use
VA-8000-101 Insulator Kit
for steam applications
280
°
F (138
°
C) Maximum.