Blowdown Valve Maintenance; Control Line Maintenance; Flexible Coupling Maintenance - Sullair LS-25S Operator's Manual And Parts List

Section 6
MAINTENANCE
Extreme caution should be used when removing
the cap from the body because there is spring
tension on the cap.
8. Reset piston assembly into the main body and
reposition spring and flat washer.
9. Replace retaining cover with LocktiteR on
threads.
10. Reattach valve to receiver cover and reconnect
all piping.

BLOWDOWN VALVE MAINTENANCE

Ref er to Figur e 6 --- 1 3
to make repairs on running blowdown valve num-
ber 409783, use repair kit number 001667, and fol-
low the instructions provided below.
1. Unscrew the four (4) !@ 4 " x #@ 4 " capscrews secur-
ing the top cover and remove.
2. Remove the two (2) Viton washers from the top
of the main body and discard.
3. Remove the cover o---ring, cylinder liner, piston,
piston guide and piston seat.
4. Discard the cover o---ring, piston o---ring, piston
guide o---rings, and the piston seat o---rings. Re-
place with o---rings provided in the repair kit.
5. Reassemble in reverse order of disassembly.
CONTROL LINE FILTER MAINTENANCE
Ref er to Figur e 6 --- 1 4
408389) maintenance normally requires replace-
ment of the filter element, strainer gasket and o---
rings. Use repair kit number 001692 and follow the
procedure explained below for proper installation.
1. Loosen the body from the bowl and unscrew the
two assemblies.
2. At this time, unscrew the baffle, holding the filter
element in place. Remove the element, louver
and o---ring.
3. Discard the o---ring and element.
4. Replace the o---ring on the louver and reinsert
into the body.
5. Insert the filter element and baffle and tighten.
6. Loosen and remove the nut on the bottom of the
body.
7. Remove the automatic drain assembly and re-
place the internal gasket.
8. Replace the body o---ring at this time.
9. Reassemble the automatic drain assembly and
place it back in the body. Tighten the nut.
10. Reconnect the body and bowl assemblies.
Tighten 2!@ 2 turns.

FLEXIBLE COUPLING MAINTENANCE

Refer to Figur e 6 --- 1 5
nance normally requires the replacement of the
(two) 2 gasket rings on the coupling. Select appro-
priate gasket rings from Table 3 and follow the pro-
cedure below for proper installation.
PIPE END PREPARATION
1. Deburr and clean the pipe ends.
36
WA R N I N G
!
. When it bec omes nec essar y
. Contr ol l ine f il ter ( P/ N
. Fl ex ibl e c oupl ing mainte -
Figure 6 ---14 Control Line Filter (P/N 408389)
* Repair Kit P/N 001692