Watts PWSSTD - Manual (Page 8)

8
Service continued
Cleaning the Injectors and Screens
1) Turn off water supply to conditioner:
a) If the conditioner installation has a “three valve” by-pass
system, first open the valve in the by-pass line, and then close
the valves at the conditioner inlet and outlet.
b) If the conditioner has an integral by-pass valve, put it in the
by-pass position.
c) If there is only a shutoff valve near the conditioner inlet, close it.
2) Relieve water pressure in the conditioner by stepping the control
into the backwash position momentarily. Return the control to
the service position.
3) Unplug electrical cord from outlet.
4) Disconnect brine tube and drain line connections at the injector
body.
5) Remove the two injector body mounting screws. The injector
and brine module can now be removed from the control valve.
Clean and reassemble
6) To replace brine valve.
a) Pull brine valve from injector body, also remove and discard
O-ring at bottom of brine valve hole.
b) Apply silicone lubricant to new O-ring and reinstall at bottom
of brine valve hole.
c) Apply silicone lubricant to O-ring on new valve assembly and
press into brine valve hole, shoulder on bushing should be
flush with injector body.
7) To replace injectors and screen.
a) Remove injector cap and screen, discard O-ring. Unscrew
injector nozzle and throat from injector body.
b) Screw in the new injector throat and nozzle and be sure they
are sealed tightly. Install a new screen.
c) Apply silicone lubricant to new O-ring and install around oval
extension on injector cap.
8) Apply silicone lubricant to three new O-rings and install over
three bosses on injector body.
9) Insert screws with washers thru injector cap and injector. Place
this assembly thru hole in timer housing and into mating holes in
the valve body.
10) Tighten screws.
11) Reconnect brine tube and drain line.
12) Return by-pass or inlet valving to normal service position. Water
pressure should now be applied to the conditioner, and any by-
pass line shutoff.
13) Check for leaks at all seal areas. Check the drain seal with the
control in the backwash position.
14) Plug electrical cord into outlet.
15) Set time of day and cycle the control valve manually to assure
proper function. Make sure control valve is returned to the ser-
vice position.
16) Make sure there is enough salt in the brine tank.
17) Start regeneration cycle manually if water is hard.