DR-1 Plastic Fluid Regulator - Maintenance
11
ASSEMBLY PROCEDURES
(Refer to Figure 1)
1. Place Item 10 (o-ring) in the slot on Item 6 (lower
diaphragm retainer).
2. Place Item 8 (lower diaphragm) on the lower
diaphragm retainer with the side of the diaphragm
contacting the retainer (o-ring side).
3. Stack the following parts on the lower diaphragm,
in the following order:
• Item 7 - Center Diaphragm Retainer
• Item 16 - Bleed Spacer
• Item 14 - Center Diaphragm
• Item 5 - Upper Diaphragm Retainer
• Item 15 - Screw
4. Ensure that clearance holes in Items 8 and 14
(diaphragms) and Item 16 (bleed spacer) are aligned
properly and tighten Item 15 (screw). Use Loctite 222
on screw threads. Set this assembly aside.
5. Place lower housing on table with bottom thread-
ed opening facing "UP".
6. Insert Item 10 (o-ring) and Item 11 (regulating
seat) into the lower housing. The beveled side of the
regulating seat must be "UP".
7. Place Item 11 (regulating needle) into lower hous-
ing with the ball end against Item 11 (regulating
seat).
8. Place Item 10 (o-ring) on Item 13 (retaining
plug).
9. Place Item 12 (spring) into lower housing over Item
11 (regulating needle) and thread Item 13 (retaining
plug) into lower housing. Tighten Item 13 (retaining
plug) ensuring that needle/spring remains in the
center of the lower housing.
10. Place lower housing on table with bowl fac-
ing "UP" and place diaphragm assembly (from step
4), with pin facing "DOWN". Rotate the diaphragm
assembly so that the slot on Item 6 (lower retainer)
is 180
°
to the outlet port on the lower housing for
cleaner flushing of paint.
11. Place Item 2 (spacer ring) on the top of the
diaphragm assembly with largest opening facing
"DOWN". Rotate the spacer ring, without rotating
the diaphragm assembly, so that the alignment mark
in the spacer ring is directly over the correct letter
stamped on Item 3 (lower housing). (See Figure 2 for
correct fitting alignment based on your applicator.)
12. Place Item 9 (diaphragm) on Item 2 (spacer ring)
and align holes.
13. Place Item 1 (cap) on diaphragm. Rotate the
cap, without rotating the diaphragm assembly, so
that the alignment mark is in line with the mark on
Item 2 (spacer ring) (see Figure 2).
14. Tighten opposing screws alternately to 8 lbs•in
ensuring uniform sealing of the diaphragms. Then
follow by tightening each screw in a circle pattern to
14-16 lbs•in.
>
DO NOT overtighten the air fittings. Over-
tightening the fittings may cause the stem of the
fitting to snap off.
C A U T I O N
!
>
Verify regulator seat and needle have match-
ing serial numbers.
C A U T I O N
!
>
DO NOT scratch the coating.
C A U T I O N
!
LN-9228-00.3
