Johnson-controls VA-8051 Manuel d'utilisateur télécharger pdf (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.

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