2.11.
Re-assemble MLT assembly onto valve stem and secure with retaining nut (finger tight)
2.12.
Re-connect electrical power (110 - 120 volt)
3.
If valve is diagnosed as faulty, replace 619755 as follows:
3.1.
WARNING
: Relieve all system air pressure
3.2.
WARNING
: Unplug MLT from power source
3.3.
Remove three (3) air lines connected to fittings in air valve (2 in back – 1 in front)
3.4.
Remove plastic retaining nut and MLT from valve stem and set aside both for re-assembly later
3.5.
Remove three (3) screws holding valve to manifold remove valve and discard
3.6.
Install new (3) push connect air line fittings to open ports of new valve
3.7.
Attach valve to manifold with three (3) screws included within kit
3.8.
Tighten screws to 15-20 in lb.
3.9.
Re-connect air line from manifold to front port of air valve
3.10.
Re-connect two remaining air lines to back ports of valve
3.11.
Re-assemble MLT assembly to valve stem and secure with retaining nut (finger tight)
3.12.
Re-connect electrical power (110 - 120 volt)
#619702 Valve Service Kit
Purge (Exhaust) Valves - (All models)
1.
WARNING
: Relieve all system air pressure
2.
Remove two bolts that attach the purge valve retainer and remove
from housing
3.
Remove the purge valve assembly and O-ring from the purge
cavity, trash screen and discard
4.
Clean the cavity thoroughly
5.
Remove the three (3) O-rings from retainer and discard
6.
Using lubricant supplied, lightly grease all three new O-rings
7.
Install on the retainer, the two (2) larger O-rings. Then install the third (smaller) O-ring
8.
Apply a light coating of grease around the O-ring seat on valve assembly and install the thin O-
ring on the purge valve seat
9.
Install new trash screen (small end first) into valve housing
10.
Install valve assembly into cavity and insure that hole in valve sleeve aligns over housing exhaust
port (muffler). Use care not to dislodge the thin O-ring from its seat
REMINDER:
If the SFD purge valve port does not align with housing exhaust port, SFD will not exhaust!
1.
Install retainer to housing
2.
Apply a light coating of grease on the threads of the two retainer bolts
3.
Install two retainer bolts and tighten to 15 ft. lb.
Inlet Check Valves - (All models)
1.
WARNING
: Relieve all system air pressure
2.
Remove two bolts from inlet check valve retainer and remove seal
retainer
3.
Remove inlet check valve spindle from cavity and discard
4.
Clean cavity thoroughly
5.
Remove all O-rings from retainer and discard
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