TM 10-4610-232-12
(c)
Close feed valve (4). (MODEL WTA-060 ONLY)
(d)
Open booster pump drain valve (5). (MODEL WTA-060 ONLY)
(e)
Open vent valve (6). (MODEL WTA-060 ONLY)
(f)
Disconnect clamps (7).
(g)
Remove pipe section (8).
(h)
Remove clamp (9).
(i)
Lift out basket strainer assembly (11) from strainer vessel (18).
(j)
Twist off cap (12) and remove seal (13). Remove outer strainer (14).
(k)
Check condition of seal (16) and gaskets (10, 13 and 15), replace if cut or damaged.
(I)
Install spare outer strainer (14), seal (16), gaskets (13 and 15) on inner strainer (17) and secure with cap (12). Insert
the assembly (11) into the basket strainer vessel (18).
(m)
Install gaskets (10).
(n)
Install pipe section (8) with clamps (7) and (9).
(o)
Close vent valve (6) and booster pump drain valve (5). (MODEL ROWPU-1 ONLY)
(p)
Open feed valve (4). (MODEL ROWPU-1 ONLY)
(q)
Return to normal operation (para. 2-19).
(r)
Clean dirty outer strainer with wire brush for next change-over. If strainer is torn or otherwise damaged, notify
organizational maintenance.
NOTE
Model ROWPU-1 is equipped with a dual strainer system which allows a basket strainer to
be removed and cleaned without shutting down the ROWPU.
(3.1)
On Model ROWPU-1 perform the following procedures for cleaning basket strainer.
(a)
(Refer to Figure 2-56.1.) Before disassembly of a basket strainer, be sure to set valves (1) and (2) properly. If basket
strainer (3) is being removed, open valve (1) and close valve (2). If basket strainer (4) is being removed, close valve
(1) and open valve (2).
(b)
Remove clamp (5), gasket (6), and clamp (7).
(c)
Remove basket strainer assembly (8) from pipe (9).
(d)
Unscrew cap (10) and remove seal (11), O-ring (12), outer strainer (13), O-ring (14), and O-ring (15) from inner
strainer (16).
(e)
Clean all dirt and debris from outer strainer (13) and inner strainer (16).
(f)
Install O-ring (15), O-ring (14), outer strainer (13), O-ring (12), and seal (11) onto inner strainer (16).
(g)
Screw cap (10) onto inner strainer (16).
(h)
Place basket strainer assembly (8) onto pipe (9) and install clamp (7), gasket (6), and clamp (5).
(i)
After assembly and installation of basket strainer, partially open valves (1) and (2) to check basket strainer installation
for leaks. Tighten or reinstall fittings as needed.
(4)
Replace all ten cartridge filter elements.
NOTE
When cartridge filters are dirty, the cartridge filter pressure drop sensor will turn on warning
horn and yellow CARTRIDGE FILTER PLUGGED light (1, Figure 2-57).
(a)
Push ALARM SILENCE (2).
(b)
Shutdown ROWPU to standby (para. 2-18).
(c)
Push SYSTEM RESET (3).
(d)
Close cartridge filter block valve (4).
(e)
Open cartridge drain valve (5) and filter vent (6).
2-108 Change 12
