Honeywell HON 5020 User And Maintenance Manual page 58

HON 5020 gas pressure regulator with HON 640a / HON 642a pilot
Figure Step Description
33 Align the valve body (1) as shown.
Turn the nozzle (3) in such a way that, as
shown in the sectional view, the dowel pin
is coaxially aligned with the lower hole and
the nozzle opening is facing upward.
Insert the nozzle (3) with the assembly aid
(2) all the way into the connecting piece.
34 Remove the assembly aid.
35 Take the screw-in fitting (1) for the motori-
zation line.
 Imperial HON 640a only:
Replace the O-ring (2) with a new,
greased O-ring.
Lubricate the thread surfaces. Screw the
screw-in fitting back in.
36 To align the cross hole of the connecting
piece correctly with the nozzle:
Use the cap to turn the diaphragm by hand
counterclockwise until it will not rotate any
further. Use a marker or pen to mark the
position on the body and on the convolut-
ed diaphragm.
37 Use the cap to turn the diaphragm by hand
clockwise until it will not rotate any further.
Use a marker or pen to mark the position
on the body.
Maintenance
58